treatments-xml/data/03/98/87/039887AAFFB38C194D9441AE30DBFB19.xml
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<document id="CF57E7AE72817105A47FEF848B443EF0" ID-CLB-Dataset="93673" ID-DOI="10.11646/zootaxa.5162.2.1" ID-GBIF-Dataset="1a1b824b-db11-4d16-90fa-b621801f0ce1" ID-ISSN="1175-5326" ID-Zenodo-Dep="6809879" ID-ZooBank="11BA9195-9A8E-4098-975B-E010627F9DFD" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1657267860032" checkinUser="plazi" docAuthor="Radashevsky, Vasily I." docDate="2022" docId="039887AAFFB38C194D9441AE30DBFB19" docLanguage="en" docName="zootaxa.5162.2.1.pdf" docOrigin="Zootaxa 5162 (2)" docStyle="DocumentStyle:647186512141C8FC8976D5BCC54AEB7D.9:Zootaxa.2013-.journal_article" docStyleId="647186512141C8FC8976D5BCC54AEB7D" docStyleName="Zootaxa.2013-.journal_article" docStyleVersion="9" docTitle="Dipolydora vietnamita Radashevsky 2022, sp. nov." docType="treatment" docUuid="EB418B1C-0919-4E41-AAF0-624C42743768" docUuidSource="ZooBank" docVersion="8" lastPageNumber="115" masterDocId="FFA1FFD2FFB88C174D0341393319FFB6" masterDocTitle="Three new species of shell-boring Dipolydora (Annelida: Spionidae: Polydorini) from the South China Sea and the Gulf of Thailand, Vietnam, with comments on the modified spines in posterior notopodia and sperm morphology in polydorins" masterLastPageNumber="119" masterPageNumber="101" pageNumber="112" updateTime="1702002490624" updateUser="plazi" zenodo-license-document="CLOSED">
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<mods:title id="E46614671F2F994E7924A21899BB0508">Three new species of shell-boring Dipolydora (Annelida: Spionidae: Polydorini) from the South China Sea and the Gulf of Thailand, Vietnam, with comments on the modified spines in posterior notopodia and sperm morphology in polydorins</mods:title>
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<mods:date id="DBC2BD5D0247D42B3839C0AF1A199208">2022</mods:date>
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<treatment id="039887AAFFB38C194D9441AE30DBFB19" ID-DOI="http://doi.org/10.5281/zenodo.6809883" ID-GBIF-Taxon="197215147" ID-Zenodo-Dep="6809883" LSID="urn:lsid:zoobank.org:act:EB418B1C-0919-4E41-AAF0-624C42743768" httpUri="http://treatment.plazi.org/id/039887AAFFB38C194D9441AE30DBFB19" lastPageId="14" lastPageNumber="115" pageId="11" pageNumber="112">
<subSubSection id="C32B6537FFB38C1C4D9441AE30B8FF63" pageId="11" pageNumber="112" type="nomenclature">
<paragraph id="8B8E36BCFFB38C1C4D9441AE3113FF07" blockId="11.[151,929,151,249]" box="[151,522,151,178]" pageId="11" pageNumber="112">
<heading id="D0C681D0FFB38C1C4D9441AE3113FF07" bold="true" box="[151,522,151,178]" fontSize="11" level="1" pageId="11" pageNumber="112" reason="1">
<emphasis id="B945EAAEFFB38C1C4D9441AE3113FF07" bold="true" box="[151,522,151,178]" pageId="11" pageNumber="112">
<taxonomicName id="4C314D3FFFB38C1C4D9441AE32BCFF07" ID-CoL="9FYCP" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[151,421,151,178]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="11" pageNumber="112" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB38C1C4D9441AE32BCFF07" bold="true" box="[151,421,151,178]" italics="true" pageId="11" pageNumber="112">Dipolydora vietnamita</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27657D5FFB38C1C4CAF41AE3113FF07" box="[428,522,151,177]" pageId="11" pageNumber="112" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
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http://zoobank.org:act:
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<subSubSection id="C32B6537FFB38C1C4D9441E63231FF4F" box="[151,296,223,249]" pageId="11" pageNumber="112" type="description">
<paragraph id="8B8E36BCFFB38C1C4D9441E63231FF4F" blockId="11.[151,929,151,249]" box="[151,296,223,249]" pageId="11" pageNumber="112">
(
<figureCitation id="130A2A39FFB38C1C4D9C41E63239FF4F" box="[159,288,223,249]" captionStart-0="FIGURE 11" captionStart-1="FIGURE 12" captionStart-2="FIGURE 13" captionStart-3="FIGURE 14" captionStartId-0="12.[151,250,1143,1167]" captionStartId-1="12.[151,250,1916,1940]" captionStartId-2="13.[151,250,1077,1101]" captionStartId-3="14.[151,250,671,695]" captionTargetBox-0="[155,1432,238,1119]" captionTargetBox-1="[151,1436,1443,1892]" captionTargetBox-2="[151,1436,181,1053]" captionTargetBox-3="[155,1432,274,646]" captionTargetId-0="figure-51@12.[155,1432,237,1120]" captionTargetId-1="figure-221@12.[151,1436,1443,1892]" captionTargetId-2="figure-15@13.[151,1436,181,1053]" captionTargetId-3="figure-75@14.[155,1432,273,647]" captionTargetPageId-0="12" captionTargetPageId-1="12" captionTargetPageId-2="13" captionTargetPageId-3="14" captionText-0="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." captionText-1="FIGURE 12. Dipolydora vietnamita sp. nov. morphometric relationships. A, caruncle length and anterior position of gizzardlike structure versus total number of chaetigers. B, last branchiate chaetiger versus total number of chaetigers. Correlation coefficients (r) and their significance are reported in Table 1." captionText-2="FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724." captionText-3="FIGURE 14. Habitat of Dipolydora vietnamita sp. nov. (in life). AC, worm burrows in a shell of the date mussel Lithophaga sp. which, in turn, have perforated the shell of an oyster. Arrow showing pygidium of a worm inside burrow. Scale bar: AC = 1 mm." figureDoi-0="http://doi.org/10.5281/zenodo.6809907" figureDoi-1="http://doi.org/10.5281/zenodo.6809909" figureDoi-2="http://doi.org/10.5281/zenodo.6809911" figureDoi-3="http://doi.org/10.5281/zenodo.6809913" httpUri-0="https://zenodo.org/record/6809907/files/figure.png" httpUri-1="https://zenodo.org/record/6809909/files/figure.png" httpUri-2="https://zenodo.org/record/6809911/files/figure.png" httpUri-3="https://zenodo.org/record/6809913/files/figure.png" pageId="11" pageNumber="112">Figs 1114</figureCitation>
)
</paragraph>
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<subSubSection id="C32B6537FFB38C194D94401E3699FF4F" lastPageId="14" lastPageNumber="115" pageId="11" pageNumber="112" type="materials_examined">
<paragraph id="8B8E36BCFFB38C1C4D94401E360EFD8B" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">
<emphasis id="B945EAAEFFB38C1C4D94401E325FFEF7" bold="true" box="[151,326,295,321]" pageId="11" pageNumber="112">Type material.</emphasis>
<materialsCitation id="3B593CE1FFB38C1C4C4D401E3605FED3" ID-GBIF-Occurrence="3861422303" collectingDate="1986-02-04" collectionCode="MIMB" collectorName="South-China Sea &amp; Gulf &amp; An Thoi Archipelago &amp; Thom Is." country="Vietnam" elevation="5" location="Vietnam" pageId="11" pageNumber="112" specimenCode="MIMB 42722" specimenCount="1" typeStatus="paratype">
<collectorName id="26C4536AFFB38C1C4C4D401E3117FEF7" box="[334,526,295,321]" pageId="11" pageNumber="112">South-China Sea</collectorName>
,
<collectingCountry id="F326762CFFB38C1C4F19401E3165FEF7" box="[538,636,295,321]" name="Vietnam" pageId="11" pageNumber="112">Vietnam</collectingCountry>
,
<collectorName id="26C4536AFFB38C1C4F8B401E31A2FEF7" box="[648,699,295,321]" pageId="11" pageNumber="112">Gulf</collectorName>
of
<collectingCountry id="F326762CFFB38C1C4FE1401E3051FEF7" box="[738,840,295,321]" name="Thailand" pageId="11" pageNumber="112">Thailand</collectingCountry>
,
<collectorName id="26C4536AFFB38C1C4E50401E375CFEF7" box="[851,1093,295,321]" pageId="11" pageNumber="112">An Thoi Archipelago</collectorName>
,
<collectorName id="26C4536AFFB38C1C4952401E37A1FEF4" box="[1105,1208,295,322]" pageId="11" pageNumber="112">Thom Is.</collectorName>
,
<quantity id="4CC99B59FFB38C1C49C5401E37EAFEF4" box="[1222,1267,295,322]" metricMagnitude="0" metricUnit="m" metricValue="5.0" pageId="11" pageNumber="112" unit="m" value="5.0">
<elevation id="001CD18FFFB38C1C49C5401E37EAFEF4" box="[1222,1267,295,322]" metricMagnitude="0" metricUnit="m" metricValue="5.0" pageId="11" pageNumber="112" unit="m" value="5.0">5 m</elevation>
</quantity>
, in shell of the gastropod
<taxonomicName id="4C314D3FFFB38C1C4C0F4075314FFED3" authority="(Linnaeus)" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" box="[268,598,331,357]" class="Gastropoda" family="Turbinellidae" genus="Vasum" kingdom="Animalia" order="Neogastropoda" pageId="11" pageNumber="112" phylum="Mollusca" rank="species" species="turbinellus">
<emphasis id="B945EAAEFFB38C1C4C0F407532CCFED3" box="[268,469,331,357]" italics="true" pageId="11" pageNumber="112">Vasum turbinellus</emphasis>
(Linnaeus)
</taxonomicName>
occupied by hermit crab,
<date id="FF8F107CFFB38C1C4E7B407230E0FED3" box="[888,1017,331,357]" pageId="11" pageNumber="112" value="1986-02-04">
<collectingDate id="EFCBE994FFB38C1C4E7B407230E0FED3" box="[888,1017,331,357]" pageId="11" pageNumber="112" value="1986-02-04">4 Feb 1986</collectingDate>
</date>
,
<specimenCode id="DB979EC7FFB38C1C490740753787FED3" box="[1028,1182,331,358]" collectionCode="MIMB" country="Russia" httpUri="http://grbio.org/cool/063z-3mpp" name="Museum of the Institute of Marine Biology" pageId="11" pageNumber="112">MIMB 42722</specimenCode>
(
<typeStatus id="548A881EFFB38C1C49AE4072360DFED3" box="[1197,1300,331,357]" pageId="11" pageNumber="112" type="paratype">paratype</typeStatus>
)
</materialsCitation>
.
<materialsCitation id="3B593CE1FFB38C1C482640723637FE3F" ID-GBIF-Occurrence="3861422304" collectingDate="2006-05-22" collectingDateMax="2021-04-30" collectingDateMin="2006-05-22" collectionCode="MIMB" collectorName="Nha &amp; Bay &amp; Tam Is." country="Vietnam" elevation="10" location="Trang" pageId="11" pageNumber="112" specimenCode="MIMB 42723, MIMB 42724, MIMB 42725, MIMB 42727, MIMB 42728, MIMB 42729" specimenCount="100" stateProvince="Trang" typeStatus="holotype">
<collectorName id="26C4536AFFB38C1C48264072364DFED3" box="[1317,1364,331,357]" pageId="11" pageNumber="112">Nha</collectorName>
<collectingRegion id="49F5F85EFFB38C1C485940753685FED0" box="[1370,1436,332,358]" country="Thailand" name="Trang" pageId="11" pageNumber="112">Trang</collectingRegion>
<collectorName id="26C4536AFFB38C1C4D94404933D1FE3C" box="[151,200,368,394]" pageId="11" pageNumber="112">Bay</collectorName>
:
<collectorName id="26C4536AFFB38C1C4DD040493231FE3C" box="[211,296,368,394]" pageId="11" pageNumber="112">Tam Is.</collectorName>
,
<quantity id="4CC99B59FFB38C1C4C3740563276FE3C" box="[308,367,367,394]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="11" pageNumber="112" unit="m" value="10.0">
<elevation id="001CD18FFFB38C1C4C3740563276FE3C" box="[308,367,367,394]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="11" pageNumber="112" unit="m" value="10.0">10 m</elevation>
</quantity>
, in dead coral encrusted by coralline alga,
<date id="FF8F107CFFB38C1C4E4D405630FFFE3F" box="[846,998,367,394]" pageId="11" pageNumber="112" value="2006-05-22">
<collectingDate id="EFCBE994FFB38C1C4E4D405630FFFE3F" box="[846,998,367,394]" pageId="11" pageNumber="112" value="2006-05-22">22 May 2006</collectingDate>
</date>
,
<specimenCode id="DB979EC7FFB38C1C4EF240493795FE3F" box="[1009,1164,367,394]" collectionCode="MIMB" country="Russia" httpUri="http://grbio.org/cool/063z-3mpp" name="Museum of the Institute of Marine Biology" pageId="11" pageNumber="112">MIMB 42723</specimenCode>
(
<specimenCount id="9D37FD35FFB38C1C49984056363BFE3F" box="[1179,1314,367,393]" pageId="11" pageNumber="112" type="generic" typeStatus="paratypes">4 paratypes</specimenCount>
);
</materialsCitation>
<materialsCitation id="3B593CE1FFB38C1C4836404930B4FE1B" ID-GBIF-Occurrence="3861422301" collectingDate="2006-05-22" collectingDateMax="2021-04-30" collectingDateMin="2006-05-22" collectionCode="MIMB" collectorName="Dung Is." country="Vietnam" elevation="10" location="Trang" pageId="11" pageNumber="112" specimenCode="MIMB 42723, MIMB 42724, MIMB 42725, MIMB 42727, MIMB 42728, MIMB 42729" specimenCount="100" stateProvince="Trang" typeStatus="holotype">
<collectorName id="26C4536AFFB38C1C48364049368EFE3C" box="[1333,1431,368,394]" pageId="11" pageNumber="112">Dung Is.</collectorName>
,
<quantity id="4CC99B59FFB38C1C4D9440AA33CBFE18" box="[151,210,403,430]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="11" pageNumber="112" unit="m" value="10.0">
<elevation id="001CD18FFFB38C1C4D9440AA33CBFE18" box="[151,210,403,430]" metricMagnitude="1" metricUnit="m" metricValue="1.0" pageId="11" pageNumber="112" unit="m" value="10.0">10 m</elevation>
</quantity>
, in shell of
<taxonomicName id="4C314D3FFFB38C1C4C5640AA32D7FE18" box="[341,462,403,430]" class="Bivalvia" family="Chamidae" genus="Chama" kingdom="Animalia" order="Venerida" pageId="11" pageNumber="112" phylum="Mollusca" rank="species" species="undetermined">
<emphasis id="B945EAAEFFB38C1C4C5640AA32BFFE1B" box="[341,422,403,429]" italics="true" pageId="11" pageNumber="112">Chama</emphasis>
sp.
</taxonomicName>
,
<date id="FF8F107CFFB38C1C4CD940AA3141FE1B" box="[474,600,403,430]" pageId="11" pageNumber="112" value="2006-06-02">
<collectingDate id="EFCBE994FFB38C1C4CD940AA3141FE1B" box="[474,600,403,430]" pageId="11" pageNumber="112" value="2006-06-02">2 Jun 2006</collectingDate>
</date>
,
<specimenCode id="DB979EC7FFB38C1C4F6040AD31E7FE1B" box="[611,766,403,430]" collectionCode="MIMB" country="Russia" httpUri="http://grbio.org/cool/063z-3mpp" name="Museum of the Institute of Marine Biology" pageId="11" pageNumber="112">MIMB 42724</specimenCode>
(
<specimenCount id="9D37FD35FFB38C1C4E0E40AA30BBFE1B" box="[781,930,403,429]" pageId="11" pageNumber="112" type="generic" typeStatus="paratypes">26 paratypes</specimenCount>
);
</materialsCitation>
<materialsCitation id="3B593CE1FFB38C1C4EB740AD3143FE67" ID-GBIF-Occurrence="3861422306" collectingDate="2006-05-22" collectingDateMax="2021-04-30" collectingDateMin="2006-05-22" collectionCode="MIMB" collectorName="Tre Is." country="Vietnam" elevation="10" location="Trang" pageId="11" pageNumber="112" specimenCode="MIMB 42723, MIMB 42724, MIMB 42725, MIMB 42727, MIMB 42728, MIMB 42729" specimenCount="100" stateProvince="Trang" typeStatus="holotype">
<collectorName id="26C4536AFFB38C1C4EB740AD30E4FE18" box="[948,1021,404,430]" pageId="11" pageNumber="112">Tre Is.</collectorName>
, eastern side,
<quantity id="4CC99B59FFB38C1C499840AA37CFFE18" box="[1179,1238,403,430]" metricMagnitude="1" metricUnit="m" metricValue="1.5" pageId="11" pageNumber="112" unit="m" value="15.0">
<elevation id="001CD18FFFB38C1C499840AA37CFFE18" box="[1179,1238,403,430]" metricMagnitude="1" metricUnit="m" metricValue="1.5" pageId="11" pageNumber="112" unit="m" value="15.0">15 m</elevation>
</quantity>
, in dead coral,
<date id="FF8F107CFFB38C1C488340AA3218FE67" pageId="11" pageNumber="112" value="2006-06-14">
<collectingDate id="EFCBE994FFB38C1C488340AA3218FE67" pageId="11" pageNumber="112" value="2006-06-14">14 Jun 2006</collectingDate>
</date>
,
<specimenCode id="DB979EC7FFB38C1C4C0E408132B0FE64" box="[269,425,439,466]" collectionCode="MIMB" country="Russia" httpUri="http://grbio.org/cool/063z-3mpp" name="Museum of the Institute of Marine Biology" pageId="11" pageNumber="112">MIMB 42725</specimenCode>
(
<specimenCount id="9D37FD35FFB38C1C4CBA408E3157FE67" box="[441,590,439,465]" pageId="11" pageNumber="112" type="generic" typeStatus="paratypes">40 paratypes</specimenCount>
),
</materialsCitation>
<materialsCitation id="3B593CE1FFB38C1C4F61408E3028FE67" ID-GBIF-Occurrence="3861422308" box="[610,817,439,465]" collectingDate="2006-05-22" collectingDateMax="2021-04-30" collectingDateMin="2006-05-22" collectionCode="MIMB" country="Vietnam" elevation="10" location="Trang" pageId="11" pageNumber="112" specimenCode="MIMB 42723, MIMB 42724, MIMB 42725, MIMB 42727, MIMB 42728, MIMB 42729" specimenCount="100" stateProvince="Trang" typeStatus="holotype">
42726 (
<emphasis id="B945EAAEFFB38C1C4FBA408E3039FE67" bold="true" box="[697,800,439,465]" pageId="11" pageNumber="112">
<typeStatus id="548A881EFFB38C1C4FBA408E3039FE67" box="[697,800,439,465]" pageId="11" pageNumber="112" type="holotype">holotype</typeStatus>
</emphasis>
);
</materialsCitation>
<materialsCitation id="3B593CE1FFB38C1C4E3A408E32A9FD8B" ID-GBIF-Occurrence="3861422302" collectingDate="2006-05-22" collectingDateMax="2021-04-30" collectingDateMin="2006-05-22" collectionCode="MIMB" country="Vietnam" elevation="10" location="Trang" pageId="11" pageNumber="112" specimenCode="MIMB 42723, MIMB 42724, MIMB 42725, MIMB 42727, MIMB 42728, MIMB 42729" specimenCount="100" stateProvince="Trang" typeStatus="paratype">
Nha
<collectingRegion id="49F5F85EFFB38C1C4E6C408130ADFE64" box="[879,948,440,466]" country="Thailand" name="Trang" pageId="11" pageNumber="112">Trang</collectingRegion>
, pier fouling,
<quantity id="4CC99B59FFB38C1C4950408E3798FE64" box="[1107,1153,439,466]" metricMagnitude="0" metricUnit="m" metricValue="3.0" pageId="11" pageNumber="112" unit="m" value="3.0">
<elevation id="001CD18FFFB38C1C4950408E3798FE64" box="[1107,1153,439,466]" metricMagnitude="0" metricUnit="m" metricValue="3.0" pageId="11" pageNumber="112" unit="m" value="3.0">3 m</elevation>
</quantity>
, in coral on pillar,
<date id="FF8F107CFFB38C1C485A408E33CBFE43" pageId="11" pageNumber="112" value="2006-07-11">
<collectingDate id="EFCBE994FFB38C1C485A408E33CBFE43" pageId="11" pageNumber="112" value="2006-07-11">11 Jul 2006</collectingDate>
</date>
,
<specimenCode id="DB979EC7FFB38C1C4DDE40E53261FE43" box="[221,376,475,502]" collectionCode="MIMB" country="Russia" httpUri="http://grbio.org/cool/063z-3mpp" name="Museum of the Institute of Marine Biology" pageId="11" pageNumber="112">MIMB 42727</specimenCode>
(
<specimenCount id="9D37FD35FFB38C1C4C8440E23105FE43" box="[391,540,475,502]" pageId="11" pageNumber="112" type="generic" typeStatus="paratypes">25 paratypes</specimenCount>
); under crust of coralline alga on shell of
<taxonomicName id="4C314D3FFFB38C1C4EED40E237ECFE43" authority="Lamarck" authorityName="Lamarck" authorityYear="1819" box="[1006,1269,475,501]" class="Bivalvia" family="Arcidae" genus="Arca" kingdom="Animalia" order="Arcida" pageId="11" pageNumber="112" phylum="Mollusca" rank="species" species="avellana">
<emphasis id="B945EAAEFFB38C1C4EED40E23793FE43" box="[1006,1162,475,501]" italics="true" pageId="11" pageNumber="112">Arca avellana</emphasis>
Lamarck
</taxonomicName>
bought in Nha
<collectingRegion id="49F5F85EFFB38C1C4D94433933C0FDAC" box="[151,217,512,538]" country="Thailand" name="Trang" pageId="11" pageNumber="112">Trang</collectingRegion>
market,
<date id="FF8F107CFFB38C1C4C3F40C632D2FDAF" box="[316,459,511,537]" pageId="11" pageNumber="112" value="2021-04-30">
<collectingDate id="EFCBE994FFB38C1C4C3F40C632D2FDAF" box="[316,459,511,537]" pageId="11" pageNumber="112" value="2021-04-30">30 Apr 2021</collectingDate>
</date>
,
<specimenCode id="DB979EC7FFB38C1C4CD543393168FDAF" box="[470,625,511,538]" collectionCode="MIMB" country="Russia" httpUri="http://grbio.org/cool/063z-3mpp" name="Museum of the Institute of Marine Biology" pageId="11" pageNumber="112">MIMB 42728</specimenCode>
(
<specimenCount id="9D37FD35FFB38C1C4F8240C6301EFDAF" box="[641,775,511,538]" pageId="11" pageNumber="112" type="generic" typeStatus="paratypes">5 paratypes</specimenCount>
); in oyster shell bought in Nha
<collectingRegion id="49F5F85EFFB38C1C4966433937BEFDAC" box="[1125,1191,512,538]" country="Thailand" name="Trang" pageId="11" pageNumber="112">Trang</collectingRegion>
market,
<date id="FF8F107CFFB38C1C480A40C63681FDAF" box="[1289,1432,511,537]" pageId="11" pageNumber="112" value="2021-04-30">
<collectingDate id="EFCBE994FFB38C1C480A40C63681FDAF" box="[1289,1432,511,537]" pageId="11" pageNumber="112" value="2021-04-30">30 Apr 2021</collectingDate>
</date>
,
<specimenCode id="DB979EC7FFB38C1C4D94431D322BFD8B" box="[151,306,547,574]" collectionCode="MIMB" country="Russia" httpUri="http://grbio.org/cool/063z-3mpp" name="Museum of the Institute of Marine Biology" pageId="11" pageNumber="112">MIMB 42729</specimenCode>
(
<typeStatus id="548A881EFFB38C1C4C42431A32B1FD8B" box="[321,424,547,573]" pageId="11" pageNumber="112" type="paratype">paratype</typeStatus>
)
</materialsCitation>
. Complete data on material examined is provided in Supplementary Table S3.
</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC4437E3036FCA3" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">
<emphasis id="B945EAAEFFB38C1C4DC4437E32B0FDD7" bold="true" box="[199,425,583,609]" pageId="11" pageNumber="112">Adult morphology.</emphasis>
Adults up to
<quantity id="4CC99B59FFB38C1C4F3D437E3195FDD4" box="[574,652,583,610]" metricMagnitude="-2" metricUnit="m" metricValue="2.1" pageId="11" pageNumber="112" unit="mm" value="21.0">21 mm</quantity>
long,
<quantity id="4CC99B59FFB38C1C4FD1437E302FFDD4" box="[722,822,583,610]" metricMagnitude="-4" metricUnit="m" metricValue="5.5" pageId="11" pageNumber="112" unit="mm" value="0.55">0.55 mm</quantity>
wide for 125 chaetigers. Pigmentation absent on body; some individuals with fine black pigment diffused on sides of palp grooves. Prostomium anteriorly bifurcated, posteriorly extending to end of chaetiger 4 as a low caruncle, shorter in small individuals (
<figureCitation id="130A2A39FFB38C1C497743B637F9FD1F" box="[1140,1248,655,681]" captionStart="FIGURE 11" captionStartId="12.[151,250,1143,1167]" captionTargetBox="[155,1432,238,1119]" captionTargetId="figure-51@12.[155,1432,237,1120]" captionTargetPageId="12" captionText="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." figureDoi="http://doi.org/10.5281/zenodo.6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="11" pageNumber="112">Figs 11A</figureCitation>
,
<figureCitation id="130A2A39FFB38C1C49EE43B63638FD1F" box="[1261,1313,655,681]" captionStart="FIGURE 12" captionStartId="12.[151,250,1916,1940]" captionTargetBox="[151,1436,1443,1892]" captionTargetId="figure-221@12.[151,1436,1443,1892]" captionTargetPageId="12" captionText="FIGURE 12. Dipolydora vietnamita sp. nov. morphometric relationships. A, caruncle length and anterior position of gizzardlike structure versus total number of chaetigers. B, last branchiate chaetiger versus total number of chaetigers. Correlation coefficients (r) and their significance are reported in Table 1." figureDoi="http://doi.org/10.5281/zenodo.6809909" httpUri="https://zenodo.org/record/6809909/files/figure.png" pageId="11" pageNumber="112">12A</figureCitation>
). Eyes and occipital antenna absent. Palps as long as 1520 chaetigers, with frontal longitudinal groove lined with fine cilia, latero-frontal motile compound cilia on sides of groove, short compound non-motile cilia arising directly from palp surface and scattered on lateral and abfrontal palp surfaces.
</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC442263245FCEB" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">Chaetiger 1 with short capillaries and small postchaetal lamellae in both rami. Posterior notopodia with only capillary chaetae.</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC4425E33A5FBA7" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">
Chaetiger 5 larger than chaetigers 4 and 6, with up to five dorsal superior capillaries (
<figureCitation id="130A2A39FFB38C1C49A1425E361FFC37" box="[1186,1286,871,897]" captionStart="FIGURE 13" captionStartId="13.[151,250,1077,1101]" captionTargetBox="[151,1436,181,1053]" captionTargetId="figure-15@13.[151,1436,181,1053]" captionTargetPageId="13" captionText="FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724." figureDoi="http://doi.org/10.5281/zenodo.6809911" httpUri="https://zenodo.org/record/6809911/files/figure.png" pageId="11" pageNumber="112">Fig. 13F</figureCitation>
), five falcate spines alternating with bilimbate-tipped companion chaetae (
<figureCitation id="130A2A39FFB38C1C4E4442B2308CFC13" box="[839,917,907,933]" captionStart="FIGURE 13" captionStartId="13.[151,250,1077,1101]" captionTargetBox="[151,1436,181,1053]" captionTargetId="figure-15@13.[151,1436,181,1053]" captionTargetPageId="13" captionText="FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724." figureDoi="http://doi.org/10.5281/zenodo.6809911" httpUri="https://zenodo.org/record/6809911/files/figure.png" pageId="11" pageNumber="112">Fig. 13</figureCitation>
AD) and arranged in oblique slightly curved row, and six ventral capillaries (
<figureCitation id="130A2A39FFB38C1C4F0642963172FC7F" box="[517,619,943,969]" captionStart="FIGURE 13" captionStartId="13.[151,250,1077,1101]" captionTargetBox="[151,1436,181,1053]" captionTargetId="figure-15@13.[151,1436,181,1053]" captionTargetPageId="13" captionText="FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724." figureDoi="http://doi.org/10.5281/zenodo.6809911" httpUri="https://zenodo.org/record/6809911/files/figure.png" pageId="11" pageNumber="112">Fig. 13E</figureCitation>
). Dorsal superior and ventral capillaries winged, shorter and fewer than those chaetae on chaetigers 4 and 6. Falcate spines with spoon-like hollow on subdistal concave side (
<figureCitation id="130A2A39FFB38C1C483342EA33B6FBA7" captionStart="FIGURE 13" captionStartId="13.[151,250,1077,1101]" captionTargetBox="[151,1436,181,1053]" captionTargetId="figure-15@13.[151,1436,181,1053]" captionTargetPageId="13" captionText="FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724." figureDoi="http://doi.org/10.5281/zenodo.6809911" httpUri="https://zenodo.org/record/6809911/files/figure.png" pageId="11" pageNumber="112">Fig. 13B, D</figureCitation>
).
</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC44522377EFBCB" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">
Hooded hooks in neuropodia from chaetiger 7, up to five in a series, accompanied by 12 winged inferior capillaries until chaetigers 910 (
<figureCitation id="130A2A39FFB38C1C4CEE4506314FFBEF" box="[493,598,1087,1113]" captionStart="FIGURE 13" captionStartId="13.[151,250,1077,1101]" captionTargetBox="[151,1436,181,1053]" captionTargetId="figure-15@13.[151,1436,181,1053]" captionTargetPageId="13" captionText="FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724." figureDoi="http://doi.org/10.5281/zenodo.6809911" httpUri="https://zenodo.org/record/6809911/files/figure.png" pageId="11" pageNumber="112">Fig. 13G</figureCitation>
), and alternating with 12 hair-like alimbate capillaries in 510 posterior neuropodia (
<figureCitation id="130A2A39FFB38C1C4C27455A329BFBCB" box="[292,386,1123,1149]" captionStart="FIGURE 13" captionStartId="13.[151,250,1077,1101]" captionTargetBox="[151,1436,181,1053]" captionTargetId="figure-15@13.[151,1436,181,1053]" captionTargetPageId="13" captionText="FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724." figureDoi="http://doi.org/10.5281/zenodo.6809911" httpUri="https://zenodo.org/record/6809911/files/figure.png" pageId="11" pageNumber="112">Fig. 13I</figureCitation>
). Hooks bidentate, with slightly curved shaft without constriction.
</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC445BE30FAFB5F" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">
Branchiae usually from chaetiger 9, occasionally from chaetigers 8 or 10, full-sized from chaetigers 1214, very short after middle of body and absent from posterior 1/31/8 part of body (
<figureCitation id="130A2A39FFB38C1C493145923783FB73" box="[1074,1178,1195,1221]" captionStart="FIGURE 12" captionStartId="12.[151,250,1916,1940]" captionTargetBox="[151,1436,1443,1892]" captionTargetId="figure-221@12.[151,1436,1443,1892]" captionTargetPageId="12" captionText="FIGURE 12. Dipolydora vietnamita sp. nov. morphometric relationships. A, caruncle length and anterior position of gizzardlike structure versus total number of chaetigers. B, last branchiate chaetiger versus total number of chaetigers. Correlation coefficients (r) and their significance are reported in Table 1." figureDoi="http://doi.org/10.5281/zenodo.6809909" httpUri="https://zenodo.org/record/6809909/files/figure.png" pageId="11" pageNumber="112">Fig. 12B</figureCitation>
), free from notopodial postchaetal lamellae, flattened, with surfaces oriented parallel to body axis.
</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC445CA3610FA87" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">
Nototrochs from chaetigers
<quantity id="4CC99B59FFB38C1C4F0145CA3155FABB" box="[514,588,1267,1293]" metricMagnitude="-1" metricUnit="m" metricValue="1.651" metricValueMax="1.778" metricValueMin="1.524" pageId="11" pageNumber="112" unit="in" value="6.5" valueMax="7.0" valueMin="6.0">67 in</quantity>
small individuals with up to about 40 chaetigers, from chaetigers
<quantity id="4CC99B59FFB38C1C483445CA3685FABB" box="[1335,1436,1267,1293]" metricMagnitude="-1" metricUnit="m" metricValue="3.302" metricValueMax="4.064" metricValueMin="2.54" pageId="11" pageNumber="112" unit="in" value="13.0" valueMax="16.0" valueMin="10.0">1016 in</quantity>
larger worms, composed of single rows of ciliated cells in both sexes. Intersegmental ciliation absent.
</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC44402322AFA77" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">
Pygidium usually thin, flaring, disc-like to cup-shaped, up to two times wider than posterior most chaetigers, trilobed, with one ventral lobe and two smaller dorsal lobes, white due to numerous fusiform glandular cells. Lateral clefts shallow and indistinct in some individuals, thus pygidium resembling a cup or a disc with only dorsal incision (
<figureCitation id="130A2A39FFB38C1C4D9C449E323FFA77" box="[159,294,1447,1473]" captionStart="FIGURE 11" captionStartId="12.[151,250,1143,1167]" captionTargetBox="[155,1432,238,1119]" captionTargetId="figure-51@12.[155,1432,237,1120]" captionTargetPageId="12" captionText="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." figureDoi="http://doi.org/10.5281/zenodo.6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="11" pageNumber="112">Fig. 11D, E</figureCitation>
).
</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC444F23246F9BF" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">Glandular pouches in neuropodia from chaetiger 6, full-sized from chaetigers 78, diminishing in size after chaetigers 1013.</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC4472A31FCF9C3" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">
Digestive tract with gizzard-like structure beginning from chaetigers 918 (
<figureCitation id="130A2A39FFB38C1C4926472A3795F99B" box="[1061,1164,1555,1581]" captionStart="FIGURE 12" captionStartId="12.[151,250,1916,1940]" captionTargetBox="[151,1436,1443,1892]" captionTargetId="figure-221@12.[151,1436,1443,1892]" captionTargetPageId="12" captionText="FIGURE 12. Dipolydora vietnamita sp. nov. morphometric relationships. A, caruncle length and anterior position of gizzardlike structure versus total number of chaetigers. B, last branchiate chaetiger versus total number of chaetigers. Correlation coefficients (r) and their significance are reported in Table 1." figureDoi="http://doi.org/10.5281/zenodo.6809909" httpUri="https://zenodo.org/record/6809909/files/figure.png" pageId="11" pageNumber="112">Fig. 12A</figureCitation>
) and extending through 12 chaetigers. Gizzard composed of anterior transparent muscular part and posterior white, apparently secretory, part. Rectum white in 35 posterior most chaetigers.
</paragraph>
<paragraph id="8B8E36BCFFB38C1C4DC4474631FCF90B" blockId="11.[151,1437,295,2014]" pageId="11" pageNumber="112">Nephridia from chaetiger 7, opening to exterior via two nephridiopores situated on lateral sides in anterior sterile chaetigers and on dorsal side in fertile chaetigers.</paragraph>
<paragraph id="8B8E36BCFFB38C1B4DC447FE312EFF63" blockId="11.[151,1437,295,2014]" lastBlockId="12.[151,1437,151,213]" lastPageId="12" lastPageNumber="113" pageId="11" pageNumber="112">
<emphasis id="B945EAAEFFB38C1C4DC447FE3271F957" bold="true" box="[199,360,1735,1761]" pageId="11" pageNumber="112">
<collectionCode id="ED20AE79FFB38C1C4DC447FE33EEF957" box="[199,247,1735,1761]" country="China" name="Museum of Zoology" pageId="11" pageNumber="112">MG</collectionCode>
staining.
</emphasis>
Weak staining appeared on the lateral and ventral sides of the peristomium; the foregut was evenly colored (
<figureCitation id="130A2A39FFB38C1C4C5347D232CFF8B3" box="[336,470,1771,1797]" captionStart="FIGURE 11" captionStartId="12.[151,250,1143,1167]" captionTargetBox="[155,1432,238,1119]" captionTargetId="figure-51@12.[155,1432,237,1120]" captionTargetPageId="12" captionText="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." figureDoi="http://doi.org/10.5281/zenodo.6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="11" pageNumber="112">Fig. 11F, G</figureCitation>
). Paired blotches (gatherings of strongly stained, probably glandular, cells) appeared on the dorsal side from chaetigers 1922 onwards (
<figureCitation id="130A2A39FFB38C1C4FDC4636307AF89F" box="[735,867,1807,1833]" captionStart="FIGURE 11" captionStartId="12.[151,250,1143,1167]" captionTargetBox="[155,1432,238,1119]" captionTargetId="figure-51@12.[155,1432,237,1120]" captionTargetPageId="12" captionText="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." figureDoi="http://doi.org/10.5281/zenodo.6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="11" pageNumber="112">Fig. 11C, F</figureCitation>
), except 1020 posterior most chaetigers. Narrow transverse bands were weakly stained on the ventral side of chaetigers 6 and 11; wider bands of stronger staining were present on chaetigers 810 (
<figureCitation id="130A2A39FFB38C1C4F16466E3165F8C7" box="[533,636,1879,1905]" captionStart="FIGURE 11" captionStartId="12.[151,250,1143,1167]" captionTargetBox="[155,1432,238,1119]" captionTargetId="figure-51@12.[155,1432,237,1120]" captionTargetPageId="12" captionText="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." figureDoi="http://doi.org/10.5281/zenodo.6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="11" pageNumber="112">Fig. 11B</figureCitation>
). In most specimens, peristomium and ventral side of chaetigers 6 and 11 were not stained, whereas in some specimens the dye was not absorbed on the ventral side of anterior chaetigers. In 20 of 21 stained specimens, the prostomium and about 20 anterior chaetigers did not absorb the dye (
<figureCitation id="130A2A39FFB38C1C482F46A63697F80F" box="[1324,1422,1951,1977]" captionStart="FIGURE 11" captionStartId="12.[151,250,1143,1167]" captionTargetBox="[155,1432,238,1119]" captionTargetId="figure-51@12.[155,1432,237,1120]" captionTargetPageId="12" captionText="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." figureDoi="http://doi.org/10.5281/zenodo.6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="11" pageNumber="112">Fig. 11F</figureCitation>
), whereas in
<specimenCount id="9D37FD35FFB38C1C4C1B46FD32AAF86B" box="[280,435,1987,2014]" pageId="11" pageNumber="112" type="generic">one specimen</specimenCount>
intense staining appeared on the dorsal side of prostomium and eight anterior chaetigers (
<figureCitation id="130A2A39FFB48C1B4D9C41AE3211FF07" box="[159,264,151,177]" captionStart="FIGURE 11" captionStartId="12.[151,250,1143,1167]" captionTargetBox="[155,1432,238,1119]" captionTargetId="figure-51@12.[155,1432,237,1120]" captionTargetPageId="12" captionText="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." figureDoi="http://doi.org/10.5281/zenodo.6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="12" pageNumber="113">Fig. 11A</figureCitation>
). Glandular pouches in neuropodia absorbed the dye and were well seen in lateral view from chaetigers 811 to chaetigers 2530 (
<figureCitation id="130A2A39FFB48C1B4CC041823132FF63" box="[451,555,187,213]" captionStart="FIGURE 11" captionStartId="12.[151,250,1143,1167]" captionTargetBox="[155,1432,238,1119]" captionTargetId="figure-51@12.[155,1432,237,1120]" captionTargetPageId="12" captionText="FIGURE 11. Morphology of Dipolydora vietnamita sp. nov. (formalin-fixed paratypes stained with methylene green).A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view.Abbreviations: ch5, ch11 = chaetigers 5, 11; co = bilimbate companion chaetae; fa = heavy falcate spines; su = dorsal superior capillaries; ve = ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723." figureDoi="http://doi.org/10.5281/zenodo.6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="12" pageNumber="113">Fig. 11G</figureCitation>
).
</paragraph>
<caption id="DF4E6634FFB48C1B4D94454E362BFA3D" ID-DOI="http://doi.org/10.5281/zenodo.6809907" ID-Zenodo-Dep="6809907" httpUri="https://zenodo.org/record/6809907/files/figure.png" pageId="12" pageNumber="113" startId="12.[151,250,1143,1167]" targetBox="[155,1432,238,1119]" targetPageId="12">
<paragraph id="8B8E36BCFFB48C1B4D94454E362BFA3D" blockId="12.[151,1437,1143,1420]" pageId="12" pageNumber="113">
<emphasis id="B945EAAEFFB48C1B4D94454E3207FB39" bold="true" box="[151,286,1143,1167]" pageId="12" pageNumber="113">FIGURE 11.</emphasis>
Morphology of
<emphasis id="B945EAAEFFB48C1B4CC0454E3018FB39" bold="true" box="[451,769,1143,1167]" pageId="12" pageNumber="113">
<taxonomicName id="4C314D3FFFB48C1B4CC0454E31B2FB39" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[451,683,1143,1167]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="12" pageNumber="113" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB48C1B4CC0454E31B2FB39" bold="true" box="[451,683,1143,1167]" italics="true" pageId="12" pageNumber="113">Dipolydora vietnamita</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27657D5FFB48C1B4FB2454E3018FB39" box="[689,769,1143,1167]" pageId="12" pageNumber="113" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(formalin-fixed paratypes stained with methylene green). A, anterior end, dorsal view, showing unusual pattern of MG staning on anterior chaetigers. B, chaetigers 312, ventral view, showing transverse bands of MG staining on chaetigers 611. C, middle chaetigers, dorsal view. D, E, posterior end in left lateral (D) and rear (E) view. F, general dorsal view, showing common absence of MG staining on dorsal side of anterior chaetigers. G, anterior fragment, left lateral view, showing MG staining on peristomium, ventral side of chaetigers 611, and of glandular pouches in lateral side from chaetiger 12 onwards. H, chaetiger 5, right side in ventral view. Abbreviations:
<emphasis id="B945EAAEFFB48C1B49634412379DFAF5" box="[1120,1156,1323,1347]" italics="true" pageId="12" pageNumber="113">ch5</emphasis>
,
<emphasis id="B945EAAEFFB48C1B4992441237D9FAF5" box="[1169,1216,1323,1347]" italics="true" pageId="12" pageNumber="113">ch11</emphasis>
= chaetigers 5, 11;
<emphasis id="B945EAAEFFB48C1B488744153685FAF5" box="[1412,1436,1324,1347]" italics="true" pageId="12" pageNumber="113">co</emphasis>
= bilimbate companion chaetae;
<emphasis id="B945EAAEFFB48C1B4CE6447632E0FAD1" box="[485,505,1359,1383]" italics="true" pageId="12" pageNumber="113">fa</emphasis>
= heavy falcate spines;
<emphasis id="B945EAAEFFB48C1B4FF34469301EFAD1" box="[752,775,1360,1383]" italics="true" pageId="12" pageNumber="113">su</emphasis>
= dorsal superior capillaries;
<emphasis id="B945EAAEFFB48C1B493B44693757FAD1" box="[1080,1102,1360,1383]" italics="true" pageId="12" pageNumber="113">ve</emphasis>
= ventral capillaries. Scale bars: AE = 100 µm; F, G = 200 µm, H = 20 µm. A, B, E, G, H—MIMB 42724; C, F—MIMB 42728; D—MIMB 42723.
</paragraph>
</caption>
<caption id="DF4E6634FFB48C1B4D94464531CDF86A" ID-DOI="http://doi.org/10.5281/zenodo.6809909" ID-Zenodo-Dep="6809909" httpUri="https://zenodo.org/record/6809909/files/figure.png" pageId="12" pageNumber="113" startId="12.[151,250,1916,1940]" targetBox="[151,1436,1443,1892]" targetPageId="12">
<paragraph id="8B8E36BCFFB48C1B4D94464531CDF86A" blockId="12.[151,1436,1916,2012]" pageId="12" pageNumber="113">
<emphasis id="B945EAAEFFB48C1B4D9446453171F822" bold="true" box="[151,616,1916,1940]" pageId="12" pageNumber="113">
FIGURE 12.
<taxonomicName id="4C314D3FFFB48C1B4C2446453109F822" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[295,528,1916,1940]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="12" pageNumber="113" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB48C1B4C2446453109F822" bold="true" box="[295,528,1916,1940]" italics="true" pageId="12" pageNumber="113">Dipolydora vietnamita</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27657D5FFB48C1B4F1446453171F822" box="[535,616,1916,1940]" pageId="12" pageNumber="113" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
morphometric relationships. A, caruncle length and anterior position of gizzardlike structure versus total number of chaetigers. B, last branchiate chaetiger versus total number of chaetigers. Correlation coefficients (
<emphasis id="B945EAAEFFB48C1B4DF246FC33E2F86A" box="[241,251,1989,2012]" italics="true" pageId="12" pageNumber="113">r</emphasis>
) and their significance are reported in Table 1.
</paragraph>
</caption>
<caption id="DF4E6634FFB58C1A4D94450C32BAFB68" ID-DOI="http://doi.org/10.5281/zenodo.6809911" ID-Zenodo-Dep="6809911" httpUri="https://zenodo.org/record/6809911/files/figure.png" pageId="13" pageNumber="114" startId="13.[151,250,1077,1101]" targetBox="[151,1436,181,1053]" targetPageId="13">
<paragraph id="8B8E36BCFFB58C1A4D94450C32BAFB68" blockId="13.[151,1437,1077,1246]" pageId="13" pageNumber="114">
<emphasis id="B945EAAEFFB58C1A4D94450C3239FBFB" bold="true" box="[151,288,1077,1101]" pageId="13" pageNumber="114">FIGURE 13.</emphasis>
Morphology of
<emphasis id="B945EAAEFFB58C1A4CC4450C301EFBF8" bold="true" box="[455,775,1077,1102]" pageId="13" pageNumber="114">
<taxonomicName id="4C314D3FFFB58C1A4CC4450C31A9FBFB" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[455,688,1077,1101]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="13" pageNumber="114" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB58C1A4CC4450C31A9FBFB" bold="true" box="[455,688,1077,1101]" italics="true" pageId="13" pageNumber="114">Dipolydora vietnamita</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27657D5FFB58C1A4FB5450F301EFBF8" box="[694,775,1078,1102]" pageId="13" pageNumber="114" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724.
</paragraph>
</caption>
<paragraph id="8B8E36BCFFB58C1A4DC4443231AAFA48" blockId="13.[151,1437,1291,2038]" pageId="13" pageNumber="114">
<emphasis id="B945EAAEFFB58C1A4DC444323233FA93" bold="true" box="[199,298,1291,1317]" pageId="13" pageNumber="114">Habitat.</emphasis>
<taxonomicName id="4C314D3FFFB58C1A4C314435312BFA93" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[306,562,1292,1318]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="13" pageNumber="114" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB58C1A4C314435312BFA93" box="[306,562,1292,1318]" italics="true" pageId="13" pageNumber="114">Dipolydora vietnamita</emphasis>
</taxonomicName>
<emphasis id="B945EAAEFFB58C1A4F394435318CFA90" bold="true" box="[570,661,1292,1318]" pageId="13" pageNumber="114">
<taxonomicNameLabel id="A27657D5FFB58C1A4F394435318CFA90" box="[570,661,1292,1318]" pageId="13" pageNumber="114" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is an opportunistic borer, making burrows in corals, coralline algae, shells of the jewel box clam
<taxonomicName id="4C314D3FFFB58C1A4CD244093150FAFC" box="[465,585,1328,1354]" class="Bivalvia" family="Chamidae" genus="Chama" kingdom="Animalia" order="Venerida" pageId="13" pageNumber="114" phylum="Mollusca" rank="species" species="undetermined">
<emphasis id="B945EAAEFFB58C1A4CD24409313BFAFC" box="[465,546,1328,1354]" italics="true" pageId="13" pageNumber="114">Chama</emphasis>
sp.
</taxonomicName>
, hazelnut ark
<taxonomicName id="4C314D3FFFB58C1A4FE1440930F3FAFC" authority="Lamarck" authorityName="Lamarck" authorityYear="1819" box="[738,1002,1328,1354]" class="Bivalvia" family="Arcidae" genus="Arca" kingdom="Animalia" order="Arcida" pageId="13" pageNumber="114" phylum="Mollusca" rank="species" species="avellana">
<emphasis id="B945EAAEFFB58C1A4FE144093064FAFC" box="[738,893,1328,1354]" italics="true" pageId="13" pageNumber="114">Arca avellana</emphasis>
Lamarck
</taxonomicName>
, and vase snail
<taxonomicName id="4C314D3FFFB58C1A4996440933F8FAD8" authority="(Linnaeus)" baseAuthorityName="Linnaeus" baseAuthorityYear="1758" class="Gastropoda" family="Turbinellidae" genus="Vasum" kingdom="Animalia" order="Neogastropoda" pageId="13" pageNumber="114" phylum="Mollusca" rank="species" species="turbinellus">
<emphasis id="B945EAAEFFB58C1A499644093644FAFC" box="[1173,1373,1328,1354]" italics="true" pageId="13" pageNumber="114">Vasum turbinellus</emphasis>
(Linnaeus)
</taxonomicName>
occupied by hermit crabs. This species is common in the coastal waters of
<collectingCountry id="F326762CFFB58C1A492B446D3793FAD8" box="[1064,1162,1364,1390]" name="Vietnam" pageId="13" pageNumber="114">Vietnam</collectingCountry>
, co-occurring with other shell-boring polydorins in the same shells and corals. Sometimes the worms occur in dense aggregations up to ten individuals per square centimeter, forming colonies of hundreds of worms in one shell and thousands of worms in a coral. Two worms were found boring in a shell of the date mussel
<taxonomicName id="4C314D3FFFB58C1A4E7244F93701FA6C" box="[881,1048,1472,1498]" class="Bivalvia" family="Mytilidae" genus="Lithophaga" kingdom="Animalia" order="Mytilida" pageId="13" pageNumber="114" phylum="Mollusca" rank="species" species="undetermined">
<emphasis id="B945EAAEFFB58C1A4E7244F930EBFA6C" box="[881,1010,1472,1498]" italics="true" pageId="13" pageNumber="114">Lithophaga</emphasis>
sp.
</taxonomicName>
which, in turn, perforated the shell of the hazelnut ark
<taxonomicName id="4C314D3FFFB58C1A4C6C44DD3112FA48" authorityName="Lamarck" authorityYear="1819" box="[367,523,1508,1534]" class="Bivalvia" family="Arcidae" genus="Arca" kingdom="Animalia" order="Arcida" pageId="13" pageNumber="114" phylum="Mollusca" rank="species" species="avellana">
<emphasis id="B945EAAEFFB58C1A4C6C44DD3112FA48" box="[367,523,1508,1534]" italics="true" pageId="13" pageNumber="114">Arca avellana</emphasis>
</taxonomicName>
(
<figureCitation id="130A2A39FFB58C1A4F1844DD3173FA48" box="[539,618,1508,1534]" captionStart="FIGURE 14" captionStartId="14.[151,250,671,695]" captionTargetBox="[155,1432,274,646]" captionTargetId="figure-75@14.[155,1432,273,647]" captionTargetPageId="14" captionText="FIGURE 14. Habitat of Dipolydora vietnamita sp. nov. (in life). AC, worm burrows in a shell of the date mussel Lithophaga sp. which, in turn, have perforated the shell of an oyster. Arrow showing pygidium of a worm inside burrow. Scale bar: AC = 1 mm." figureDoi="http://doi.org/10.5281/zenodo.6809913" httpUri="https://zenodo.org/record/6809913/files/figure.png" pageId="13" pageNumber="114">Fig. 14</figureCitation>
AC).
</paragraph>
<paragraph id="8B8E36BCFFB58C1A4DC4473E37E6F904" blockId="13.[151,1437,1291,2038]" pageId="13" pageNumber="114">
<emphasis id="B945EAAEFFB58C1A4DC4473E326AF997" bold="true" box="[199,371,1543,1569]" pageId="13" pageNumber="114">Reproduction.</emphasis>
<taxonomicName id="4C314D3FFFB58C1A4C7F47313164F997" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[380,637,1544,1570]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="13" pageNumber="114" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB58C1A4C7F47313164F997" box="[380,637,1544,1570]" italics="true" pageId="13" pageNumber="114">Dipolydora vietnamita</emphasis>
</taxonomicName>
<emphasis id="B945EAAEFFB58C1A4F84473131FAF994" bold="true" box="[647,739,1544,1570]" pageId="13" pageNumber="114">
<taxonomicNameLabel id="A27657D5FFB58C1A4F84473131FAF994" box="[647,739,1544,1570]" pageId="13" pageNumber="114" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is dioecious. Paired gonads are attached to segmental blood vessels from chaetigers 2124 through 2/33/4 of the body. Spermatogonia proliferate in testes; spermatogenesis occurs in the coelomic cavity. Spermatids are joined in tetrads (
<figureCitation id="130A2A39FFB58C1A4E5E476930DFF9DC" box="[861,966,1616,1642]" captionStart="FIGURE 13" captionStartId="13.[151,250,1077,1101]" captionTargetBox="[151,1436,181,1053]" captionTargetId="figure-15@13.[151,1436,181,1053]" captionTargetPageId="13" captionText="FIGURE 13. Morphology of Dipolydora vietnamita sp. nov. AF, chaetiger 5 chaetae: A, C, bilimbate companion chaetae; B, D, falcate spines in lateral view; E, ventral capillary chaeta; F, dorsal superior geniculate capillary chaeta. G, H, neurochaetae from chaetiger 7: G, inferior winged capillary chaeta; H, bidentate hooded hook. I, J, neurochaetae from a posterior most chaetiger: I, inferior hair-like capillary chaeta; J, bidentate hooded hook. K, tetrad of spermatids. Scale bars: AJ = 20 µm; K = 5 µm. AK—MIMB 42724." figureDoi="http://doi.org/10.5281/zenodo.6809911" httpUri="https://zenodo.org/record/6809911/files/figure.png" pageId="13" pageNumber="114">Fig. 13K</figureCitation>
). Spermatozoa are introsperm about 1 µm in diameter, with a pointed acrosome 3 µm long, nucleus 5 µm, middlepiece 4 µm, head+middlepiece 12 µm long, and flagellum 54 µm long. Egg morphology and larval development of the species remain unknown.
</paragraph>
<paragraph id="8B8E36BCFFB58C194DC447823699FF4F" blockId="13.[151,1437,1291,2038]" lastBlockId="14.[151,1436,151,249]" lastPageId="14" lastPageNumber="115" pageId="13" pageNumber="114">
<emphasis id="B945EAAEFFB58C1A4DC4478232C9F963" bold="true" box="[199,464,1723,1749]" pageId="13" pageNumber="114">Asexual reproduction.</emphasis>
Many fragments of worms regenerating anterior and posterior chaetigers were found in shells from Nha
<collectingRegion id="49F5F85EFFB58C1A4C4D47D93289F94C" box="[334,400,1760,1786]" country="Thailand" name="Trang" pageId="13" pageNumber="114">Trang</collectingRegion>
Bay in
<date id="FF8F107CFFB58C1A4CE647D93142F94C" box="[485,603,1760,1786]" pageId="13" pageNumber="114" value="2006-06">June 2006</date>
. Examination of those fragments has allowed for determining the course of the architomic asexual reproduction of
<taxonomicName id="4C314D3FFFB58C1A4F4D463D31FFF8AB" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[590,742,1796,1821]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="13" pageNumber="114" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB58C1A4F4D463D31FFF8AB" box="[590,742,1796,1821]" italics="true" pageId="13" pageNumber="114">D. vietnamita</emphasis>
</taxonomicName>
<emphasis id="B945EAAEFFB58C1A4FEE463D305EF8A8" bold="true" box="[749,839,1796,1822]" pageId="13" pageNumber="114">
<taxonomicNameLabel id="A27657D5FFB58C1A4FEE463D305EF8A8" box="[749,839,1796,1822]" pageId="13" pageNumber="114" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
In the beginning, individuals divide into two or three stock fragments, each of which subsequently regenerates lost parts. The smallest stock fragment had six middle chaetigers. The anterior regeneration starts with a bud that grows and differentiates into head and body anlage. Palps begin to develop immediately after head differentiation. The body anlage elongates gradually and becomes segmented, probably simultaneously, into eight segments; no more segments are added anteriorly. Chaetae, postchaetal lamellae and other external segment attributes, as well as mouth and foregut, develop only when the segmentation is completed. Eyes never develop in the regenerated head. The posterior regeneration also starts with a bud that gives rise to the pygidium and the pre-pygidial growth zone. New posterior stolon segments develop successively following the formation of the growth zone. Similar records of architomy have been found in other spionids such as
<taxonomicName id="4C314D3FFFB68C194D9441E631E8FF4F" authority="Claparede, 1863" authorityName="Claparede" authorityYear="1863" box="[151,753,222,249]" class="Polychaeta" family="Spionidae" genus="Pygospio" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="elegans">
<emphasis id="B945EAAEFFB68C194D9441E63245FF4F" box="[151,348,223,249]" italics="true" pageId="14" pageNumber="115">Pygospio elegans</emphasis>
<bibRefCitation id="EFA04B4DFFB68C194C6041E63103FF4F" author="Claparede, E." box="[355,538,223,249]" pageId="14" pageNumber="115" refId="ref11034" refString="Claparede, E. (1863) Beobachtungen uber Anatomie und Entwicklungsgeschichte wirbelloser Thiere an der Kuste von Normandie Angestellt. Wilhelm Engelmann, Leipzig, vii + 120 pp." type="book" year="1863">Claparède, 1863</bibRefCitation>
(
<bibRefCitation id="EFA04B4DFFB68C194F2A41E631F0FF4F" author="Rasmussen, E." box="[553,745,222,249]" pageId="14" pageNumber="115" pagination="1161" refId="ref12025" refString="Rasmussen, E. (1953) Asexual reproduction in Pygospio elegans Claparede (Polychaeta sedentaria). Nature, 171, 1161." type="journal article" year="1953">Rasmussen 1953</bibRefCitation>
)
</taxonomicName>
and
<taxonomicName id="4C314D3FFFB68C194E2441E63665FF4F" authority="(Radashevsky &amp; Nogueira 2003)" baseAuthorityName="Radashevsky &amp; Nogueira" baseAuthorityYear="2003" box="[807,1404,223,249]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="armata">
<emphasis id="B945EAAEFFB68C194E2441E63718FF4E" box="[807,1025,223,249]" italics="true" pageId="14" pageNumber="115">Dipolydora armata</emphasis>
(
<bibRefCitation id="EFA04B4DFFB68C19490C41E6366CFF4F" author="Radashevsky, V. I. &amp; Nogueira, J. M. M." box="[1039,1397,223,249]" pageId="14" pageNumber="115" pagination="375 - 384" refId="ref11820" refString="Radashevsky, V. I. &amp; Nogueira, J. M. M. (2003) Life history, morphology and distribution of Dipolydora armata (Polychaeta: Spionidae). Journal of the Marine Biological Association of the United Kingdom, 83 (2), 375 - 384. https: // doi. org / 10.1017 / S 0025315403007227 h" type="journal article" year="2003">Radashevsky &amp; Nogueira 2003</bibRefCitation>
)
</taxonomicName>
.
</paragraph>
</subSubSection>
<caption id="DF4E6634FFB68C194D9443A633C0FD48" ID-DOI="http://doi.org/10.5281/zenodo.6809913" ID-Zenodo-Dep="6809913" httpUri="https://zenodo.org/record/6809913/files/figure.png" pageId="14" pageNumber="115" startId="14.[151,250,671,695]" targetBox="[155,1432,274,646]" targetPageId="14">
<paragraph id="8B8E36BCFFB68C194D9443A633C0FD48" blockId="14.[151,1436,670,767]" pageId="14" pageNumber="115">
<emphasis id="B945EAAEFFB68C194D9443A63239FD01" bold="true" box="[151,288,671,695]" pageId="14" pageNumber="115">FIGURE 14.</emphasis>
Habitat of
<emphasis id="B945EAAEFFB68C194C9143A731CBFD01" bold="true" box="[402,722,670,695]" pageId="14" pageNumber="115">
<taxonomicName id="4C314D3FFFB68C194C9143A73162FD01" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[402,635,670,695]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB68C194C9143A73162FD01" bold="true" box="[402,635,670,695]" italics="true" pageId="14" pageNumber="115">Dipolydora vietnamita</emphasis>
</taxonomicName>
<taxonomicNameLabel id="A27657D5FFB68C194F8243A631CBFD01" box="[641,722,671,695]" pageId="14" pageNumber="115" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(in life). AC, worm burrows in a shell of the date mussel
<taxonomicName id="4C314D3FFFB68C19482443A633ACFD6C" class="Bivalvia" family="Mytilidae" genus="Lithophaga" kingdom="Animalia" order="Mytilida" pageId="14" pageNumber="115" phylum="Mollusca" rank="species" species="undetermined">
<emphasis id="B945EAAEFFB68C19482443A63685FD01" box="[1319,1436,671,695]" italics="true" pageId="14" pageNumber="115">Lithophaga</emphasis>
sp.
</taxonomicName>
which, in turn, have perforated the shell of an oyster. Arrow showing pygidium of a worm inside burrow. Scale bar: AC = 1 mm.
</paragraph>
</caption>
<subSubSection id="C32B6537FFB68C194DC4421433C4FBD1" pageId="14" pageNumber="115" type="discussion">
<paragraph id="8B8E36BCFFB68C194DC4421433C4FBD1" blockId="14.[151,1437,813,1199]" pageId="14" pageNumber="115">
<emphasis id="B945EAAEFFB68C194DC442143222FCF1" bold="true" box="[199,315,813,839]" pageId="14" pageNumber="115">Remarks.</emphasis>
<taxonomicName id="4C314D3FFFB68C194C404214315BFCF1" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[323,578,813,839]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB68C194C404214315BFCF1" box="[323,578,813,839]" italics="true" pageId="14" pageNumber="115">Dipolydora vietnamita</emphasis>
</taxonomicName>
<emphasis id="B945EAAEFFB68C194F48421431BCFCF1" bold="true" box="[587,677,813,839]" pageId="14" pageNumber="115">
<taxonomicNameLabel id="A27657D5FFB68C194F48421431BCFCF1" box="[587,677,813,839]" pageId="14" pageNumber="115" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is similar to
<taxonomicName id="4C314D3FFFB68C194E3F4217379EFCF1" authority="(Schmarda, 1861)" baseAuthorityName="Schmarda" baseAuthorityYear="1861" box="[828,1159,813,839]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="socialis">
<emphasis id="B945EAAEFFB68C194E3F421730ACFCF1" box="[828,949,813,839]" italics="true" pageId="14" pageNumber="115">D. socialis</emphasis>
(
<bibRefCitation id="EFA04B4DFFB68C194EC642143767FCF1" author="Schmarda, L. K." box="[965,1150,813,839]" pageId="14" pageNumber="115" refId="ref12147" refString="Schmarda, L. K. (1861) Neue wirbellose Thiere beobachtet und gesammelt auf einer Reise um die Erde 1853 bis 1857. Erster Band. Turbellarien, Rotatorien und Anneliden. Zweite Halfte. Verlag von Wilhelm Engelmann, Leipzig, 164 pp." type="book" year="1861">Schmarda, 1861</bibRefCitation>
)
</taxonomicName>
from
<collectingCountry id="F326762CFFB68C1949CE42143615FCF1" box="[1229,1292,813,839]" name="Chile" pageId="14" pageNumber="115">Chile</collectingCountry>
, and
<taxonomicName id="4C314D3FFFB68C194849421733EFFCDD" baseAuthorityName="Blake &amp; Kudenov" baseAuthorityYear="1978" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="protuberata">
<emphasis id="B945EAAEFFB68C194849421733EFFCDD" italics="true" pageId="14" pageNumber="115">D. protuberata</emphasis>
</taxonomicName>
from
<collectingRegion id="49F5F85EFFB68C194C3E426B3113FCDD" box="[317,522,849,876]" country="Australia" name="New South Wales" pageId="14" pageNumber="115">New South Wales</collectingRegion>
,
<collectingCountry id="F326762CFFB68C194F1642683166FCDD" box="[533,639,849,875]" name="Australia" pageId="14" pageNumber="115">Australia</collectingCountry>
, by having subdistal protuberance on the falcate spines of chaetiger 5. However, the two latter species are tube-dwellers in soft sediments while
<taxonomicName id="4C314D3FFFB68C194EED424F3790FC39" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[1006,1161,886,911]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB68C194EED424F3790FC39" box="[1006,1161,886,911]" italics="true" pageId="14" pageNumber="115">D. vietnamita</emphasis>
</taxonomicName>
<emphasis id="B945EAAEFFB68C194990424C37F6FC39" bold="true" box="[1171,1263,885,911]" pageId="14" pageNumber="115">
<taxonomicNameLabel id="A27657D5FFB68C194990424C37F6FC39" box="[1171,1263,885,911]" pageId="14" pageNumber="115" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is a shell- and coral-borer.
<taxonomicName id="4C314D3FFFB68C194C2242A03138FC05" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[289,545,921,947]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB68C194C2242A03138FC05" box="[289,545,921,947]" italics="true" pageId="14" pageNumber="115">Dipolydora vietnamita</emphasis>
</taxonomicName>
<emphasis id="B945EAAEFFB68C194F2A42A0319DFC05" bold="true" box="[553,644,921,947]" pageId="14" pageNumber="115">
<taxonomicNameLabel id="A27657D5FFB68C194F2A42A0319DFC05" box="[553,644,921,947]" pageId="14" pageNumber="115" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
and
<taxonomicName id="4C314D3FFFB68C194FBE42A3302FFC05" baseAuthorityName="Schmarda" baseAuthorityYear="1861" box="[701,822,921,947]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="socialis">
<emphasis id="B945EAAEFFB68C194FBE42A3302FFC05" box="[701,822,921,947]" italics="true" pageId="14" pageNumber="115">D. socialis</emphasis>
</taxonomicName>
have trilobed pygidia but differ in the arrangement of branchiae and composition of the gizzard-like structures.
<taxonomicName id="4C314D3FFFB68C194E15428430EDFC61" baseAuthorityName="Schmarda" baseAuthorityYear="1861" box="[790,1012,957,983]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="socialis">
<emphasis id="B945EAAEFFB68C194E15428430EDFC61" box="[790,1012,957,983]" italics="true" pageId="14" pageNumber="115">Dipolydora socialis</emphasis>
</taxonomicName>
has branchiae usually beginning from chaetiger 8 and gizzard with four chitinous plates attached to the inner wall of muscular part, while
<taxonomicName id="4C314D3FFFB68C19480042DB3685FC4D" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" box="[1283,1436,994,1019]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB68C19480042DB3685FC4D" box="[1283,1436,994,1019]" italics="true" pageId="14" pageNumber="115">D. vietnamita</emphasis>
</taxonomicName>
<emphasis id="B945EAAEFFB68C194D94453C33E8FBA9" bold="true" box="[151,241,1029,1055]" pageId="14" pageNumber="115">
<taxonomicNameLabel id="A27657D5FFB68C194D94453C33E8FBA9" box="[151,241,1029,1055]" pageId="14" pageNumber="115" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
has branchiae usually beginning from chaetiger 9 and gizzard without chitinous plates.
<taxonomicName id="4C314D3FFFB68C1949C4453C33D0FBF5" authority="Radashevsky, 2022" authorityName="Radashevsky" authorityYear="2022" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="vietnamita" status="sp. nov.">
<emphasis id="B945EAAEFFB68C1949C4453C33D0FBF5" italics="true" pageId="14" pageNumber="115">Dipolydora vietnamita</emphasis>
</taxonomicName>
<emphasis id="B945EAAEFFB68C194DD245103232FBF5" bold="true" box="[209,299,1065,1091]" pageId="14" pageNumber="115">
<taxonomicNameLabel id="A27657D5FFB68C194DD245103232FBF5" box="[209,299,1065,1091]" pageId="14" pageNumber="115" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
differs from
<taxonomicName id="4C314D3FFFB68C194CC245133170FBF5" baseAuthorityName="Blake &amp; Kudenov" baseAuthorityYear="1978" box="[449,617,1065,1091]" class="Polychaeta" family="Spionidae" genus="Dipolydora" kingdom="Animalia" order="Spionida" pageId="14" pageNumber="115" phylum="Annelida" rank="species" species="protuberata">
<emphasis id="B945EAAEFFB68C194CC245133170FBF5" box="[449,617,1065,1091]" italics="true" pageId="14" pageNumber="115">D. protuberata</emphasis>
</taxonomicName>
by having trilobed pygidium instead of disc-like pygidium with a dorsal notch.
</paragraph>
</subSubSection>
<subSubSection id="C32B6537FFB68C194DC44548377AFB3D" box="[199,1123,1137,1164]" pageId="14" pageNumber="115" type="etymology">
<paragraph id="8B8E36BCFFB68C194DC44548377AFB3D" blockId="14.[151,1437,813,1199]" box="[199,1123,1137,1164]" pageId="14" pageNumber="115">
<emphasis id="B945EAAEFFB68C194DC445483257FB3D" bold="true" box="[199,334,1137,1163]" pageId="14" pageNumber="115">Etymology.</emphasis>
The species name refers to the
<typeStatus id="548A881EFFB68C194FAC454B31C6FB3A" box="[687,735,1138,1164]" pageId="14" pageNumber="115">type</typeStatus>
locality of the species in
<collectingCountry id="F326762CFFB68C194EFE45483779FB3D" box="[1021,1120,1137,1163]" name="Vietnam" pageId="14" pageNumber="115">Vietnam</collectingCountry>
.
</paragraph>
</subSubSection>
<subSubSection id="C32B6537FFB68C194DC445AC30DBFB19" box="[199,962,1173,1199]" pageId="14" pageNumber="115" type="distribution">
<paragraph id="8B8E36BCFFB68C194DC445AC30DBFB19" blockId="14.[151,1437,813,1199]" box="[199,962,1173,1199]" pageId="14" pageNumber="115">
<emphasis id="B945EAAEFFB68C194DC445AC3278FB19" bold="true" box="[199,353,1173,1199]" pageId="14" pageNumber="115">Distribution.</emphasis>
South-China Sea,
<collectingCountry id="F326762CFFB68C194F3145AC3188FB19" box="[562,657,1173,1199]" name="Vietnam" pageId="14" pageNumber="115">Vietnam</collectingCountry>
(see Table S3,
<figureCitation id="130A2A39FFB68C194E3F45AC30ADFB19" box="[828,948,1173,1199]" captionStart="FIGURE 1" captionStartId="1.[151,250,1150,1174]" captionTargetBox="[180,1428,722,1126]" captionTargetId="figure-257@1.[158,1441,705,1129]" captionTargetPageId="1" captionText="FIGURE 1. Maps showing sampling locations in the Gulf of Thailand and South China Sea (A) and Nha Trang Bay (B)." figureDoi="http://doi.org/10.5281/zenodo.6809881" httpUri="https://zenodo.org/record/6809881/files/figure.png" pageId="14" pageNumber="115">Fig. 1A, B</figureCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>