277 lines
43 KiB
XML
277 lines
43 KiB
XML
<document id="FB8CFA8124D0F43F049F27B7A5031846" ID-DOI="10.5281/zenodo.208658" ID-GBIF-Dataset="b893f374-935d-424e-870c-855ad1ad8682" ID-ISSN="1175-5326" ID-Zenodo-Dep="208658" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1460485435624" checkinUser="plazi" docAuthor="Mortimer, Kate, Cassà, Susanna, Martin, Daniel & Gil, João" docDate="2012" docId="EA76A055FFBDFFA6FF0AD3610B3EFA05" docLanguage="en" docName="zt03331p043.pdf" docOrigin="Zootaxa 3331" docStyle="DocumentStyle:890A69B780ED73D6DB8551B71C8AC79E.4:Zootaxa.2009-2012.journal_article" docStyleId="890A69B780ED73D6DB8551B71C8AC79E" docStyleName="Zootaxa.2009-2012.journal_article" docStyleVersion="4" docTitle="Magelona pacifica Monro 1933" docType="treatment" docVersion="10" lastPageNumber="34" masterDocId="164FD82DFFA2FF87FF9DD4530E0EFFC0" masterDocTitle="New records and new species of Magelonidae (Polychaeta) from the Arabian Peninsula, with a re-description of Magelona pacifica and a discussion on the magelonid buccal region" masterLastPageNumber="43" masterPageNumber="1" pageNumber="32" updateTime="1698309013195" updateUser="plazi">
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<mods:title id="90341F9419A3FB07AE999E29D6E59638">New records and new species of Magelonidae (Polychaeta) from the Arabian Peninsula, with a re-description of Magelona pacifica and a discussion on the magelonid buccal region</mods:title>
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<mods:namePart id="4AB4B72BA38E40F6C6A355E5B95B83EB">Mortimer, Kate</mods:namePart>
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<mods:namePart id="B91BF84AB87351106CA907A767627A6C">Cassà, Susanna</mods:namePart>
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<mods:namePart id="0647BC594D14510AA52BAD16E7DA11AF">Martin, Daniel</mods:namePart>
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<mods:namePart id="1A5F000C592858F2C47B7D6491C0F133">Gil, João</mods:namePart>
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<mods:title id="032E2DB5284622CBC2AF4ABC41B997C6">Zootaxa</mods:title>
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<mods:date id="2C0852285C445851144AF55AA9E82595">2012</mods:date>
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<mods:number id="917DF89567D0333214A380B51C9B2C45">3331</mods:number>
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<treatment id="EA76A055FFBDFFA6FF0AD3610B3EFA05" ID-DOI="http://doi.org/10.5281/zenodo.5658293" ID-GBIF-Taxon="119518296" ID-Zenodo-Dep="5658293" LSID="urn:lsid:plazi:treatment:EA76A055FFBDFFA6FF0AD3610B3EFA05" httpUri="http://treatment.plazi.org/id/EA76A055FFBDFFA6FF0AD3610B3EFA05" lastPageId="33" lastPageNumber="34" pageId="31" pageNumber="32">
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<subSubSection id="2AC542C8FFBDFF98FF0AD3610F36F8AD" pageId="31" pageNumber="32" type="nomenclature">
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<paragraph id="62601143FFBDFF98FF0AD3610C10F88C" blockId="31.[151,542,1842,1901]" box="[151,542,1842,1868]" pageId="31" pageNumber="32">
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<heading id="3928A62FFFBDFF98FF0AD3610C10F88C" bold="true" box="[151,542,1842,1868]" fontSize="11" level="1" pageId="31" pageNumber="32" reason="1">
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<taxonomicName id="A5DF6AC0FFBDFF98FF0AD3610C10F88C" ID-CoL="3XGSS" authority="Monro, 1933" authorityName="Monro" authorityYear="1933" box="[151,542,1842,1868]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="31" pageNumber="32" phylum="Annelida" rank="species" species="pacifica">
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<emphasis id="50ABCD51FFBDFF98FF0AD3610C10F88C" bold="true" box="[151,542,1842,1868]" pageId="31" pageNumber="32">
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<emphasis id="50ABCD51FFBDFF98FF0AD3610F76F88C" bold="true" box="[151,376,1842,1868]" italics="true" pageId="31" pageNumber="32">Magelona pacifica</emphasis>
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<bibRefCitation id="064E6CB2FFBDFF98FEE2D3610C10F88C" author="Monro" box="[383,542,1842,1868]" pageId="31" pageNumber="32" refString="Monro, C. C. A. (1933) The Polychaeta Sedentaria collected by Dr. C. Crossland at Colon, in the Panama region, and the Galapagos Islands during the expedition of the S. Y. ' St. George'. Proceedings of the Zoological Society of London, 1933, 1039 - 1092." type="proceedings paper" year="1933">Monro, 1933</bibRefCitation>
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</emphasis>
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</taxonomicName>
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</heading>
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</paragraph>
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<paragraph id="62601143FFBDFF98FF0AD3060F36F8AD" blockId="31.[151,542,1842,1901]" box="[151,312,1877,1901]" pageId="31" pageNumber="32">
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<figureCitation id="FAE40DC6FFBDFF98FF0AD3060F36F8AD" box="[151,312,1877,1901]" captionStart-0="FIGURE 14" captionStart-1="FIGURE 15" captionStart-2="FIGURE 16" captionStartId-0="34.[151,250,1922,1945]" captionStartId-1="35.[151,250,1920,1943]" captionStartId-2="36.[151,250,1422,1445]" captionTargetBox-0="[187,1392,195,1899]" captionTargetBox-1="[189,1394,193,1897]" captionTargetBox-2="[172,1418,218,1386]" captionTargetId-0="figure@34.[187,1392,195,1899]" captionTargetId-1="figure@35.[189,1394,193,1897]" captionTargetId-2="figure@36.[151,1436,193,1401]" captionTargetPageId-0="34" captionTargetPageId-1="35" captionTargetPageId-2="36" captionText-0="FIGURE 14. Magelona pacifica syntypes (A, C – D, 42 chaetiger af, left hand palp attached, proboscis partially everted; B, 41 chaetiger af, proboscis everted, no palps): (A – B) anteriors, dorsal views (N. B. various thoracic chaetigers previously dissected); (C – D) methyl green staining patterns (dorsal and ventral views respectively)." captionText-1="FIGURE 15. Magelona pacifica syntypes: (A) prostomium, dorsal view (41 chaetiger af, proboscis everted, no palps); (B) median to distal tip of loose palp; (C – E) 2 chaetiger fragment showing posteriorly open pouches, medially split and on consecutive segments (lateral and ventral views); (F) posterior fragment (dorsal view)." captionText-2="FIGURE 16. Magelona pacifica syntypes (A – D, G, 41 chaetiger af, proboscis everted, no palps; E, 41 chaetiger af, proboscis partially everted, no palps; F, 60 chaetiger af): (A – C, E – G) parapodia from chaetigers 1 – 3, 7, 9 and 14 respectively (anterior views) (Note: the dorsal superior processes of chaetigers 1 and 2 were drawn from the parapodia on the opposite side of the body, indicated by dotted lines); (D) notopodium from chaetiger 4 (anterior view) (neuropodium damaged, parapodia absent) (N. B. A complete set of parapodial drawings from one specimen was not possible due to the condition of all syntype material)." httpUri-0="https://zenodo.org/record/208670/files/figure.png" httpUri-1="https://zenodo.org/record/208671/files/figure.png" httpUri-2="https://zenodo.org/record/208672/files/figure.png" pageId="31" pageNumber="32">Figures 14–16</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="2AC542C8FFBDFFA7FF0AD3CE0D12FF37" lastPageId="32" lastPageNumber="33" pageId="31" pageNumber="32" type="reference_group">
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<paragraph id="62601143FFBDFFA7FF0AD3CE0D12FF37" blockId="31.[151,673,1949,1971]" lastBlockId="32.[151,1437,151,2013]" lastPageId="32" lastPageNumber="33" pageId="31" pageNumber="32">
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<treatmentCitationGroup id="42CF366DFFBDFFA7FF0AD3CE0D12FF37" infered="true" lastPageId="32" lastPageNumber="33" pageId="31" pageNumber="32">
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<taxonomicName id="A5DF6AC0FFBDFF98FF0AD3CE0C2EF873" ID-CoL="3XGSS" authority="Monro, 1933: 1048" authorityName="Monro" authorityPageNumber="1048" authorityYear="1933" box="[151,544,1949,1971]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="31" pageNumber="32" phylum="Annelida" rank="species" species="pacifica">
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<emphasis id="50ABCD51FFBDFF98FF0AD3CE0F58F873" box="[151,342,1949,1971]" italics="true" pageId="31" pageNumber="32">Magelona pacifica</emphasis>
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<treatmentCitation id="E37E3752FFBDFF98FEC1D3CD0C2EF873" author="Monro" box="[348,544,1950,1971]" page="1048" pageId="31" pageNumber="32" year="1933">
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<bibRefCitation id="064E6CB2FFBDFF98FEC1D3CD0FEDF873" author="Monro" box="[348,483,1950,1971]" pageId="31" pageNumber="32" refString="Monro, C. C. A. (1933) The Polychaeta Sedentaria collected by Dr. C. Crossland at Colon, in the Panama region, and the Galapagos Islands during the expedition of the S. Y. ' St. George'. Proceedings of the Zoological Society of London, 1933, 1039 - 1092." type="proceedings paper" year="1933">Monro, 1933</bibRefCitation>
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: 1048
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</treatmentCitation>
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</taxonomicName>
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–1049, fig. 2
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<emphasis id="50ABCD51FF82FFA7FF0AD4C40F72FF70" bold="true" box="[151,380,151,176]" pageId="32" pageNumber="33">Material examined</emphasis>
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.
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<typeStatus id="BD64AFE1FF82FFA7FE11D4C40FF9FF6F" box="[396,503,151,175]" pageId="32" pageNumber="33" type="syntype">Syntypes</typeStatus>
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:
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<collectingCountry id="1AC851D3FF82FFA7FD98D4C40C71FF6F" box="[517,639,151,175]" name="Panama" pageId="32" pageNumber="33">PANAMÁ</collectingCountry>
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, Gorgona Island, at low tide, collected by Dr. C. Crossland, (BMNH
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<typeStatus id="BD64AFE1FF82FFA7FF0AD4EE0EC1FF15" box="[151,207,189,213]" pageId="32" pageNumber="33">Type</typeStatus>
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1933.7.10.65/70; 14 af, 13 f of 2–32 chaetigers, 1 pf of approximately 28 chaetigers for
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<quantity id="A527BCA6FF82FFA7FB20D4EF0B0FFF14" box="[1213,1281,188,212]" metricMagnitude="-3" metricUnit="m" metricValue="9.0" pageId="32" pageNumber="33" unit="mm" value="9.0">9 mm</quantity>
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, and 13 loose palps) (N.B. original description indicates
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<specimenCount id="74D9DACAFF82FFA7FDEED48C0D1EFF37" box="[627,784,223,247]" pageId="32" pageNumber="33" type="generic">12 specimens</specimenCount>
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).
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</treatmentCitationGroup>
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</paragraph>
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</subSubSection>
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<subSubSection id="2AC542C8FF82FFA6FF5AD5500DE0FC9F" lastPageId="33" lastPageNumber="34" pageId="32" pageNumber="33" type="diagnosis">
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<paragraph id="62601143FF82FFA7FF5AD5500FBCFE35" blockId="32.[151,1437,151,2013]" pageId="32" pageNumber="33">
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<emphasis id="50ABCD51FF82FFA7FF5AD5500F34FEDC" bold="true" box="[199,314,259,284]" pageId="32" pageNumber="33">Diagnosis</emphasis>
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. Prostomium longer than wide, with distinct prostomial horns. Notopodia of chaetigers 1–8 with spatulate postchaetal lamellae, expanded as cirriform dorsal superior processes. Neuropodia with slender triangular ventral lobes; chaetiger 8 with additional triangular postchaetal lamellae. Notopodia of chaetiger 9 with rounded postchaetal lamellae confluent with prechaetal ridges, expanded as lateral cirriform lobes. Neuropodia of chaetiger 9 with triangular postchaetal lamellae and ventral prechaetal processes. All thoracic chaetae capillary. Abdominal lateral lamellae rounded triangular (toad-stool shape in profile), basally constricted. Hooded hooks bidentate, in one unidirectional group.
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</paragraph>
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<paragraph id="62601143FF82FFA7FF5AD5AC0B51FCD4" blockId="32.[151,1437,151,2013]" pageId="32" pageNumber="33">
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<emphasis id="50ABCD51FF82FFA7FF5AD5AC0F79FDD8" bold="true" box="[199,375,511,536]" pageId="32" pageNumber="33">Re-description</emphasis>
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. A moderately large species (
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<figureCitation id="FAE40DC6FF82FFA7FD58D5AC0D30FDD7" box="[709,830,511,535]" captionStart="FIGURE 14" captionStartId="34.[151,250,1922,1945]" captionTargetBox="[187,1392,195,1899]" captionTargetId="figure@34.[187,1392,195,1899]" captionTargetPageId="34" captionText="FIGURE 14. Magelona pacifica syntypes (A, C – D, 42 chaetiger af, left hand palp attached, proboscis partially everted; B, 41 chaetiger af, proboscis everted, no palps): (A – B) anteriors, dorsal views (N. B. various thoracic chaetigers previously dissected); (C – D) methyl green staining patterns (dorsal and ventral views respectively)." httpUri="https://zenodo.org/record/208670/files/figure.png" pageId="32" pageNumber="33">Figures 14</figureCitation>
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A–D); junction between thorax and abdomen distinct, abdomen thicker dorso-ventrally than thorax. All specimens posteriorly incomplete, condition generally poor. Thoracic parapodia missing or incomplete in many specimens, particularly in posterior thorax. Dimensions of longest
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<typeStatus id="BD64AFE1FF82FFA7FF0AD63E0EFDFD45" box="[151,243,621,645]" pageId="32" pageNumber="33" type="syntype">syntype</typeStatus>
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: prostomium 1.0 mm long,
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<quantity id="A527BCA6FF82FFA7FDB4D63F0C71FD44" box="[553,639,620,644]" metricMagnitude="-4" metricUnit="m" metricValue="8.0" pageId="32" pageNumber="33" unit="mm" value="0.8">0.8 mm</quantity>
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wide; thorax 5.0 mm long (including prostomium),
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<quantity id="A527BCA6FF82FFA7FB56D63F0B2FFD44" box="[1227,1313,620,644]" metricMagnitude="-4" metricUnit="m" metricValue="5.0" pageId="32" pageNumber="33" unit="mm" value="0.5">0.5 mm</quantity>
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wide (thorax generally widest at chaetiger 1, tapering towards abdomen); abdomen
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<quantity id="A527BCA6FF82FFA7FC4ED6DC0A27FD67" box="[979,1065,655,679]" metricMagnitude="-4" metricUnit="m" metricValue="4.0" pageId="32" pageNumber="33" unit="mm" value="0.4">0.4 mm</quantity>
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wide; total length approximately
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<quantity id="A527BCA6FF82FFA7FF0AD6E70EF2FD0C" box="[151,252,692,716]" metricMagnitude="-2" metricUnit="m" metricValue="3.35" pageId="32" pageNumber="33" unit="mm" value="33.5">33.5 mm</quantity>
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for 60 chaetigers. Other
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<typeStatus id="BD64AFE1FF82FFA7FD87D6E60C72FD0D" box="[538,636,693,717]" pageId="32" pageNumber="33" type="syntype">syntypes</typeStatus>
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with 29–51 chaetigers for
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<quantity id="A527BCA6FF82FFA7FC2DD6E70A24FD0C" box="[944,1066,692,716]" metricMagnitude="-2" metricUnit="m" metricValue="2.05" metricValueMax="2.6" metricValueMin="1.5" pageId="32" pageNumber="33" unit="mm" value="20.5" valueMax="26.0" valueMin="15.0">15–26 mm</quantity>
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(N.B. original description states that “one of the most complete specimens measures
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<quantity id="A527BCA6FF82FFA7FD77D6840D34FD2F" box="[746,826,727,751]" metricMagnitude="-2" metricUnit="m" metricValue="4.5" pageId="32" pageNumber="33" unit="mm" value="45.0">45 mm</quantity>
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(…) for 85 chaetigers”. It is likely that this specimen has now fragmented and may be represented by the 60 chaetiger af and the posterior fragment reported here).
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</paragraph>
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<paragraph id="62601143FF82FFA7FF54D74C0D0FFB04" blockId="32.[151,1437,151,2013]" pageId="32" pageNumber="33">
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Prostomium longer than wide (L:W ratio 1.1–1.4); anterior margin smooth, triangular, with very conspicuous prostomial horns (
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<figureCitation id="FAE40DC6FF82FFA7FEF8D7170FDDFC9C" box="[357,467,836,860]" captionStart="FIGURE 15" captionStartId="35.[151,250,1920,1943]" captionTargetBox="[189,1394,193,1897]" captionTargetId="figure@35.[189,1394,193,1897]" captionTargetPageId="35" captionText="FIGURE 15. Magelona pacifica syntypes: (A) prostomium, dorsal view (41 chaetiger af, proboscis everted, no palps); (B) median to distal tip of loose palp; (C – E) 2 chaetiger fragment showing posteriorly open pouches, medially split and on consecutive segments (lateral and ventral views); (F) posterior fragment (dorsal view)." httpUri="https://zenodo.org/record/208671/files/figure.png" pageId="32" pageNumber="33">Figure 15</figureCitation>
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A) (the tips of which are more rounded, and the horns broader than originally figured by Monro). Prostomial lateral margins often undulating. Two pairs of prominent longitudinal dorsal muscular(?) ridges, outer pair abutting inners for entire length; inner pair diverging distally into each horn. Outer pair moderately thick, heavily ridged transversely. Inner pair showing diagonal striations at each end, with light transverse ridging medially. Distinct muscular(?) areas either side of ridges of varying shape and size. Proboscis everted in
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<specimenCount id="74D9DACAFF82FFA7FA1DD7870F1EFBCF" pageId="32" pageNumber="33" type="generic">13 specimens</specimenCount>
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; heart-shaped when fully everted, round to oval (
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<figureCitation id="FAE40DC6FF82FFA7FCA0D7A40DA2FBCF" box="[829,940,1015,1039]" captionStart="FIGURE 14" captionStartId="34.[151,250,1922,1945]" captionTargetBox="[187,1392,195,1899]" captionTargetId="figure@34.[187,1392,195,1899]" captionTargetPageId="34" captionText="FIGURE 14. Magelona pacifica syntypes (A, C – D, 42 chaetiger af, left hand palp attached, proboscis partially everted; B, 41 chaetiger af, proboscis everted, no palps): (A – B) anteriors, dorsal views (N. B. various thoracic chaetigers previously dissected); (C – D) methyl green staining patterns (dorsal and ventral views respectively)." httpUri="https://zenodo.org/record/208670/files/figure.png" pageId="32" pageNumber="33">Figure 14</figureCitation>
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D) when partially everted; ridged longitudinally, although much lighter superiorly, appearing almost smooth. Palps attached on eight specimens, long and slender; arising ventrolaterally from base of prostomium, reaching approximately chaetiger 21–30; non-papillated region long reaching chaetiger 3–5. Degree of papillation variable, papillae short proximally but long for majority of length; digitiform; proximally with two or three rows of papillae either side of inconspicuous groove, medially with two, and distally with one or two rows either side.
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</paragraph>
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<paragraph id="62601143FF82FFA7FF54D0830F6CF9C8" blockId="32.[151,1437,151,2013]" pageId="32" pageNumber="33">
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Achaetous region behind prostomium large approximately one and a half times the size of chaetiger 1. Chaetigers 1–7 similar (although size of the lamellae and processes in posterior thorax difficult to ascertain due to absence/damage in most specimens); parapodia biramous (
|
||
<figureCitation id="FAE40DC6FF82FFA7FCDDD14B0DB5FAF0" box="[832,955,1304,1328]" captionStart="FIGURE 16" captionStartId="36.[151,250,1422,1445]" captionTargetBox="[172,1418,218,1386]" captionTargetId="figure@36.[151,1436,193,1401]" captionTargetPageId="36" captionText="FIGURE 16. Magelona pacifica syntypes (A – D, G, 41 chaetiger af, proboscis everted, no palps; E, 41 chaetiger af, proboscis partially everted, no palps; F, 60 chaetiger af): (A – C, E – G) parapodia from chaetigers 1 – 3, 7, 9 and 14 respectively (anterior views) (Note: the dorsal superior processes of chaetigers 1 and 2 were drawn from the parapodia on the opposite side of the body, indicated by dotted lines); (D) notopodium from chaetiger 4 (anterior view) (neuropodium damaged, parapodia absent) (N. B. A complete set of parapodial drawings from one specimen was not possible due to the condition of all syntype material)." httpUri="https://zenodo.org/record/208672/files/figure.png" pageId="32" pageNumber="33">Figures 16</figureCitation>
|
||
A–E); notopodia with low triangular prechaetal lamellae confluent with large spatulate postchaetal lamellae, of a similar size throughout the thorax, upper margins smooth. Long slender, cirriform, prechaetal superior processes present (DML). Neuropodial pre- and postchaetal lamellae as low ridges, forming distinct cuff-like structures confluent with ventral triangular lobes (VNL) beneath chaetae, decreasing in size along thorax. Lamellae of chaetiger 8 unknown due to damage in all specimens, however, neuropodia with additional triangular postchaetal lamellae of similar size to those of the proceeding chaetiger.
|
||
</paragraph>
|
||
<paragraph id="62601143FF82FFA7FF54D2470C3BF97C" blockId="32.[151,1437,151,2013]" pageId="32" pageNumber="33">
|
||
Chaetiger 9: Notopodial prechaetal lamellae as low ridges confluent with rounded postchaetal lamellae (smaller than those of preceding chaetigers) and inferiorly expanded as small cirriform processes; superior processes (DML) not observed and described originally as absent (
|
||
<figureCitation id="FAE40DC6FF82FFA7FC2CD20F0A24F9B4" box="[945,1066,1628,1652]" captionStart="FIGURE 16" captionStartId="36.[151,250,1422,1445]" captionTargetBox="[172,1418,218,1386]" captionTargetId="figure@36.[151,1436,193,1401]" captionTargetPageId="36" captionText="FIGURE 16. Magelona pacifica syntypes (A – D, G, 41 chaetiger af, proboscis everted, no palps; E, 41 chaetiger af, proboscis partially everted, no palps; F, 60 chaetiger af): (A – C, E – G) parapodia from chaetigers 1 – 3, 7, 9 and 14 respectively (anterior views) (Note: the dorsal superior processes of chaetigers 1 and 2 were drawn from the parapodia on the opposite side of the body, indicated by dotted lines); (D) notopodium from chaetiger 4 (anterior view) (neuropodium damaged, parapodia absent) (N. B. A complete set of parapodial drawings from one specimen was not possible due to the condition of all syntype material)." httpUri="https://zenodo.org/record/208672/files/figure.png" pageId="32" pageNumber="33">Figure 16</figureCitation>
|
||
F). Neuropodia with triangular postchaetal lamellae confluent with low prechaetal ridges and digitiform prechaetal lobes. Chaetae of all thoracic chaetigers simple winged capillaries.
|
||
</paragraph>
|
||
<paragraph id="62601143FF82FFA7FF54D29B0B4FF8B0" blockId="32.[151,1437,151,2013]" pageId="32" pageNumber="33">
|
||
Abdominal chaetigers with large rounded triangular to spatulate lateral lamellae (toad-stool shape in profile) (
|
||
<figureCitation id="FAE40DC6FF82FFA7FF03D2BF0F01F8C4" box="[158,271,1772,1796]" captionStart="FIGURE 16" captionStartId="36.[151,250,1422,1445]" captionTargetBox="[172,1418,218,1386]" captionTargetId="figure@36.[151,1436,193,1401]" captionTargetPageId="36" captionText="FIGURE 16. Magelona pacifica syntypes (A – D, G, 41 chaetiger af, proboscis everted, no palps; E, 41 chaetiger af, proboscis partially everted, no palps; F, 60 chaetiger af): (A – C, E – G) parapodia from chaetigers 1 – 3, 7, 9 and 14 respectively (anterior views) (Note: the dorsal superior processes of chaetigers 1 and 2 were drawn from the parapodia on the opposite side of the body, indicated by dotted lines); (D) notopodium from chaetiger 4 (anterior view) (neuropodium damaged, parapodia absent) (N. B. A complete set of parapodial drawings from one specimen was not possible due to the condition of all syntype material)." httpUri="https://zenodo.org/record/208672/files/figure.png" pageId="32" pageNumber="33">Figure 16</figureCitation>
|
||
G) (shape variable, sometimes more rounded, edges often undulating and folded over) of about equal size in both rami; basally constricted, stalked, and overlapping in anterior abdomen. Postchaetal extension of the lateral lamellae behind chaetal rows present in anterior abdomen; triangular, much reduced by chaetigers 15–20. Triangular processes (DML and VML) present at inner margins of chaetal rows, long in anterior abdomen.
|
||
</paragraph>
|
||
<paragraph id="62601143FF82FFA6FF54D32F0DDEFEFF" blockId="32.[151,1437,151,2013]" lastBlockId="33.[151,1436,151,1477]" lastPageId="33" lastPageNumber="34" pageId="32" pageNumber="33">
|
||
Abdominal chaetae bidentate hooded hooks, with around 10–12 hooks per rami initially (not drawn to prevent further damage to specimens, particularly any remaining complete hooks). Majority of hooks broken where they emerge in all specimens, however they appear to be in one unidirectional group (difficult to discern due to condition of material. Monro’s original description does not mention this character, and although his drawings show unidirectional hooks, they are shown with different orientations in different rami i.e. facing the lamellae in one group and away in another). A parapodial slide preparation made from a posterior
|
||
<emphasis id="50ABCD51FF83FFA6FC77D4B20DFDFF38" box="[1002,1011,225,248]" italics="true" pageId="33" pageNumber="34">-</emphasis>
|
||
most chaetiger of a
|
||
<typeStatus id="BD64AFE1FF83FFA6FB4ED4B30B24FF38" box="[1235,1322,224,248]" pageId="33" pageNumber="34" type="syntype">syntype</typeStatus>
|
||
specimen suggests that they are unidirectional based on how they arise. Information on non
|
||
<emphasis id="50ABCD51FF83FFA6FBBDD5560A27FEDC" box="[1056,1065,261,284]" italics="true" pageId="33" pageNumber="34">-</emphasis>
|
||
<typeStatus id="BD64AFE1FF83FFA6FBB4D5560A57FEDD" box="[1065,1113,261,285]" pageId="33" pageNumber="34">type</typeStatus>
|
||
material of
|
||
<taxonomicName id="A5DF6AC0FF83FFA6FB7DD5560B50FEDC" box="[1248,1374,260,284]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="33" pageNumber="34" phylum="Annelida" rank="species" species="pacifica">
|
||
<emphasis id="50ABCD51FF83FFA6FB7DD5560B50FEDC" box="[1248,1374,260,284]" italics="true" pageId="33" pageNumber="34">M. pacifica</emphasis>
|
||
</taxonomicName>
|
||
from
|
||
<collectingCountry id="1AC851D3FF83FFA6FF0AD5740EE2FEFF" box="[151,236,295,319]" name="Mexico" pageId="33" pageNumber="34">Mexico</collectingCountry>
|
||
also suggests unidirectional facing bidentate hooks (
|
||
<bibRefCitation id="064E6CB2FF83FFA6FCA1D5740DCAFEFF" author="Brasil" box="[828,964,295,319]" pageId="33" pageNumber="34" refString="Brasil, A. C. dos S. (2003) Filogenia de Magelonidae Cunningham & Ramage, 1888 (Annelida - Polychaeta) com base na morfologia externa. Tese de Doutorado, Universidade Federal do Parana, 113 pp." type="book" year="2003">
|
||
<collectingCountry id="1AC851D3FF83FFA6FCA1D5740D8FFEFF" box="[828,897,295,319]" name="Brazil" pageId="33" pageNumber="34">Brasil</collectingCountry>
|
||
2003
|
||
</bibRefCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="62601143FF83FFA6FF54D51F0CAAFE0F" blockId="33.[151,1436,151,1477]" pageId="33" pageNumber="34">
|
||
Paired posteriorly open pouches on consecutive segments, on both sides of the body, starting from around chaetigers 36–40 (observed on
|
||
<specimenCount id="74D9DACAFF83FFA6FD99D53C0CAFFE47" box="[516,673,367,391]" pageId="33" pageNumber="34" type="generic">10 specimens</specimenCount>
|
||
) are present. Pouches appear as simple folds, medially split with thicker cuticle surrounding edges (
|
||
<figureCitation id="FAE40DC6FF83FFA6FDB8D5C70CAEFE6C" box="[549,672,404,428]" captionStart="FIGURE 15" captionStartId="35.[151,250,1920,1943]" captionTargetBox="[189,1394,193,1897]" captionTargetId="figure@35.[189,1394,193,1897]" captionTargetPageId="35" captionText="FIGURE 15. Magelona pacifica syntypes: (A) prostomium, dorsal view (41 chaetiger af, proboscis everted, no palps); (B) median to distal tip of loose palp; (C – E) 2 chaetiger fragment showing posteriorly open pouches, medially split and on consecutive segments (lateral and ventral views); (F) posterior fragment (dorsal view)." httpUri="https://zenodo.org/record/208671/files/figure.png" pageId="33" pageNumber="34">Figures 15</figureCitation>
|
||
C–E). Pouches present until approximately 10 chaetigers from the pygidium, (observed from posterior fragment).
|
||
</paragraph>
|
||
<paragraph id="62601143FF83FFA6FF54D58E0FFCFDFF" blockId="33.[151,1436,151,1477]" pageId="33" pageNumber="34">
|
||
Eggs present in three fragments (18 and 20 chaetiger fragments and 44 chaetiger af), approximately 80 Μm in diameter (clearly visible from approximately 37th chaetiger). Posterior fragment (
|
||
<figureCitation id="FAE40DC6FF83FFA6FBBCD6510A80FDDA" box="[1057,1166,514,538]" captionStart="FIGURE 15" captionStartId="35.[151,250,1920,1943]" captionTargetBox="[189,1394,193,1897]" captionTargetId="figure@35.[189,1394,193,1897]" captionTargetPageId="35" captionText="FIGURE 15. Magelona pacifica syntypes: (A) prostomium, dorsal view (41 chaetiger af, proboscis everted, no palps); (B) median to distal tip of loose palp; (C – E) 2 chaetiger fragment showing posteriorly open pouches, medially split and on consecutive segments (lateral and ventral views); (F) posterior fragment (dorsal view)." httpUri="https://zenodo.org/record/208671/files/figure.png" pageId="33" pageNumber="34">Figure 15</figureCitation>
|
||
F) with no pygidial cirri observed, presumed broken(?).
|
||
</paragraph>
|
||
<paragraph id="62601143FF83FFA6FF5AD6190D5BFCFA" blockId="33.[151,1436,151,1477]" pageId="33" pageNumber="34">
|
||
<emphasis id="50ABCD51FF83FFA6FF5AD6190F14FDA3" bold="true" box="[199,282,586,611]" pageId="33" pageNumber="34">Colour</emphasis>
|
||
. Colour of preserved specimens uniformly cream in alcohol. Darker colouration interparapodially in the abdomen (
|
||
<figureCitation id="FAE40DC6FF83FFA6FEA9D63C0FACFD47" box="[308,418,623,647]" captionStart="FIGURE 15" captionStartId="35.[151,250,1920,1943]" captionTargetBox="[189,1394,193,1897]" captionTargetId="figure@35.[189,1394,193,1897]" captionTargetPageId="35" captionText="FIGURE 15. Magelona pacifica syntypes: (A) prostomium, dorsal view (41 chaetiger af, proboscis everted, no palps); (B) median to distal tip of loose palp; (C – E) 2 chaetiger fragment showing posteriorly open pouches, medially split and on consecutive segments (lateral and ventral views); (F) posterior fragment (dorsal view)." httpUri="https://zenodo.org/record/208671/files/figure.png" pageId="33" pageNumber="34">Figure 15</figureCitation>
|
||
F). Methyl green stain dissipates quickly leaving a very diffuse, overall stain (
|
||
<figureCitation id="FAE40DC6FF83FFA6FA9ED63C0B77FD47" box="[1283,1401,623,647]" captionStart="FIGURE 14" captionStartId="34.[151,250,1922,1945]" captionTargetBox="[187,1392,195,1899]" captionTargetId="figure@34.[187,1392,195,1899]" captionTargetPageId="34" captionText="FIGURE 14. Magelona pacifica syntypes (A, C – D, 42 chaetiger af, left hand palp attached, proboscis partially everted; B, 41 chaetiger af, proboscis everted, no palps): (A – B) anteriors, dorsal views (N. B. various thoracic chaetigers previously dissected); (C – D) methyl green staining patterns (dorsal and ventral views respectively)." httpUri="https://zenodo.org/record/208670/files/figure.png" pageId="33" pageNumber="34">Figures 14</figureCitation>
|
||
C– D) (stain slightly darker and persisting longer on chaetigers 1–7 dorsally and 3–7 ventrally). However, dorsal transverse bands of light green/yellow persist between chaetigers 2–9, just posterior to parapodia. Those behind chaetiger 2 often appearing as patches rather than bands. These bands correspond with light speckled transverse bands visible in the same area without staining. An additional medial dorsal patch, just prior to chaetiger 1 is often present. Similar light green bands observed ventrally between 4–9.
|
||
</paragraph>
|
||
<paragraph id="62601143FF83FFA6FF5AD7150DE0FC9F" blockId="33.[151,1436,151,1477]" box="[199,1006,838,864]" pageId="33" pageNumber="34">
|
||
<emphasis id="50ABCD51FF83FFA6FF5AD7150F2DFC9F" bold="true" box="[199,291,838,863]" pageId="33" pageNumber="34">Habitat</emphasis>
|
||
.
|
||
<typeStatus id="BD64AFE1FF83FFA6FEACD71B0F66FCA0" box="[305,360,840,864]" pageId="33" pageNumber="34">Type</typeStatus>
|
||
specimens found at low tide on Gorgona Island,
|
||
<collectingCountry id="1AC851D3FF83FFA6FC13D7140DE4FC9F" box="[910,1002,839,863]" name="Panama" pageId="33" pageNumber="34">Panamá</collectingCountry>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="2AC542C8FF83FFA6FF5AD7390F1FFB07" pageId="33" pageNumber="34" type="distribution">
|
||
<paragraph id="62601143FF83FFA6FF5AD7390F1FFB07" blockId="33.[151,1436,151,1477]" pageId="33" pageNumber="34">
|
||
<emphasis id="50ABCD51FF83FFA6FF5AD7390F57FC43" bold="true" box="[199,345,874,899]" pageId="33" pageNumber="34">Distribution</emphasis>
|
||
.
|
||
<taxonomicName id="A5DF6AC0FF83FFA6FEF6D7380C4FFC43" box="[363,577,875,899]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="33" pageNumber="34" phylum="Annelida" rank="species" species="pacifica">
|
||
<emphasis id="50ABCD51FF83FFA6FEF6D7380C4FFC43" box="[363,577,875,899]" italics="true" pageId="33" pageNumber="34">Magelona pacifica</emphasis>
|
||
</taxonomicName>
|
||
has been additionally recorded from Southern California (
|
||
<bibRefCitation id="064E6CB2FF83FFA6FB70D7390B99FC42" author="Hartman" box="[1261,1431,874,898]" pageId="33" pageNumber="34" refString="Hartman, O. (1944) Polychaetous annelids, 6. Paraonidae, Magelonidae, Longosomidae, Ctenodrilidae and Sabellariidae. Allan Hancock Pacific Expeditions, 10, 311 - 389." type="journal article" year="1944">Hartman 1944</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="064E6CB2FF83FFA6FF0AD7DC0EDCFC67" author="Hartman" box="[151,210,911,935]" pageId="33" pageNumber="34" refString="Hartman, O. (1956) Contributions to a biological survey of Santa Monica Bay, California. A final report submitted to Hyperion Engineers, Inc., by the Geology Department, University of Southern California, September 17, 1956." type="journal article" year="1956">1956</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="064E6CB2FF83FFA6FF7FD7DC0F10FC67" author="Hartman" box="[226,286,911,935]" pageId="33" pageNumber="34" refString="Hartman, O. (1969) Atlas of sedentariate polychaetous annelids from California. Allan Hancock Foundation, Los Angeles. 812 pp." type="book" year="1969">1969</bibRefCitation>
|
||
), Gulf of California and the Pacific coast of
|
||
<collectingCountry id="1AC851D3FF83FFA6FCA5D7DC0D83FC67" box="[824,909,911,935]" name="Mexico" pageId="33" pageNumber="34">México</collectingCountry>
|
||
(
|
||
<bibRefCitation id="064E6CB2FF83FFA6FC3DD7DC0A97FC67" author="Arias-Gonzalez" box="[928,1177,911,935]" pageId="33" pageNumber="34" refString="Arias-Gonzalez, J. E. (1984) Diversidad, distribucion y abundancia de anelidos (Poliquetos) en la Bahia de Mazatlan, Sinaloa, durante un ciclo annual. Tesis Profesional, Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, 102 pp." type="book" year="1984">Arias-González 1984</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="064E6CB2FF83FFA6FB34D7DC0B99FC67" author="Padilla-Galicia" box="[1193,1431,911,935]" pageId="33" pageNumber="34" refString="Padilla-Galicia, E. (1984) Estudio cualitativo y cuantitativo de las poblaciones de anelidos poliquetos de la plataforma continental de Sinaloa. Tesis Profesional, Facultad de Ciencias, Universidad Nacional Autonoma de Mexico, 106 pp." type="book" year="1984">Padilla-Galicia 1984</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="064E6CB2FF83FFA6FF0AD7E10FAAFC0A" author="Varela-Hernandez" box="[151,420,946,970]" pageId="33" pageNumber="34" refString="Varela-Hernandez, J. J. (1993) Anelidos poliquetos de la plataforma continental de Jalisco, Mexico. Tesis Profesional, Facultad de Ciencias Biologicas, Universidad Guadalajara, 113 pp." type="book" year="1993">Varela-Hernández 1993</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="064E6CB2FF83FFA6FE2DD7E00CC6FC0A" author="De" box="[432,712,946,970]" pageId="33" pageNumber="34" refString="De Leon-Gonzalez, J. A. (1994) Poliquetos (Annelida: Polychaeta) de la plataforma continental de la costa oeste de Baja California Sur, Mexico: Taxonomia, habitos alimenticios y distribucion. Tesis Maestria, CICIMAR-IPC, 177 pp." type="book" year="1994">De León-González 1994</bibRefCitation>
|
||
;
|
||
<bibRefCitation id="064E6CB2FF83FFA6FD49D7E10ABFFC0A" author="Hernandez-Alcantara" box="[724,1201,946,970]" pageId="33" pageNumber="34" refString="Hernandez-Alcantara, P. & Solis-Weiss, V. (2000) Magelonidae from the Mexican Pacific and northern Gulf of Mexico, with the description of a new genus (Meridithia) and four new species. In: Reish, D. J. & Lana, P. (Eds), Proceedings of the 6 th International Polychaete Conference, Curitiba, Brazil, 1998. Bulletin of Marine Science, 67, 625 - 644." type="journal article" year="2000">Hernández-Alcántara & Solís-Weiss 2000</bibRefCitation>
|
||
). Ten further records were made throughout the Tropical Eastern Pacific (see,
|
||
<bibRefCitation id="064E6CB2FF83FFA6FC8ED7840AC1FC2F" author="Salazar-Vallejo" box="[787,1231,983,1007]" pageId="33" pageNumber="34" refString="Salazar-Vallejo, S. I. & Londono-Mesa, M. H. (2004) Lista de especies y bibliografia de poliquetos (Polychaeta) del Pacifico Oriental Tropical. Anales del Instituto de Biologia, Universidad Nacional Autonoma de Mexico, Serie Zoologia, 75 (1), 9 - 97." type="journal article" year="2004">Salazar-Vallejo & Londoño-Mesa 2004</bibRefCitation>
|
||
), and also West of the
|
||
<collectingCountry id="1AC851D3FF83FFA6FF5FD7A90F3BFBD2" box="[194,309,1018,1042]" name="Philippines" pageId="33" pageNumber="34">Philippine</collectingCountry>
|
||
Trench (
|
||
<geoCoordinate id="07EB7784FF83FFA6FE02D7A90FF1FBD2" box="[415,511,1018,1042]" direction="north" orientation="latitude" pageId="33" pageNumber="34" precision="925" value="10.433333">10°26'N</geoCoordinate>
|
||
,
|
||
<geoCoordinate id="07EB7784FF83FFA6FD90D7A90C79FBD2" box="[525,631,1018,1042]" direction="east" orientation="longitude" pageId="33" pageNumber="34" precision="925" value="126.083336">126°05'E</geoCoordinate>
|
||
,
|
||
<quantity id="A527BCA6FF83FFA6FD18D7A90CD3FBD2" box="[645,733,1018,1042]" metricMagnitude="3" metricUnit="m" metricValue="1.0" pageId="33" pageNumber="34" unit="m" value="1000.0">1000 m</quantity>
|
||
) (
|
||
<bibRefCitation id="064E6CB2FF83FFA6FD6BD7A90DB2FBD2" author="Kirkegaard" box="[758,956,1018,1042]" pageId="33" pageNumber="34" refString="Kirkegaard, J. B. (1996) Bathyal and abyssal polychaete (sedentary species I). Scientific Results of the Danish Deep-Sea Expedition Round the World 1950 - 52. Galathea Reports, 17, 57 - 78." type="journal article" year="1996">Kirkegaard 1996</bibRefCitation>
|
||
). Kirkegaard’s description states “without notopodial and neuropodial medial lamellae in posterior region” as in the original description by
|
||
<bibRefCitation id="064E6CB2FF83FFA6FB44D0730B72FBF7" author="Monro" box="[1241,1404,1055,1079]" pageId="33" pageNumber="34" refString="Monro, C. C. A. (1933) The Polychaeta Sedentaria collected by Dr. C. Crossland at Colon, in the Panama region, and the Galapagos Islands during the expedition of the S. Y. ' St. George'. Proceedings of the Zoological Society of London, 1933, 1039 - 1092." type="proceedings paper" year="1933">Monro (1933)</bibRefCitation>
|
||
: “I can see no cirriform processes”. However,
|
||
<taxonomicName id="A5DF6AC0FF83FFA6FDE9D0100D49FB9B" box="[628,839,1091,1115]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="33" pageNumber="34" phylum="Annelida" rank="species" species="pacifica">
|
||
<emphasis id="50ABCD51FF83FFA6FDE9D0100D49FB9B" box="[628,839,1091,1115]" italics="true" pageId="33" pageNumber="34">Magelona pacifica</emphasis>
|
||
</taxonomicName>
|
||
has been shown herein to possess abdominal triangular processes (DML and VML) at the inner margins of chaetal rows, so we cannot be sure whether Kirkegaard’s material is actually
|
||
<emphasis id="50ABCD51FF83FFA6FEECD0DF0FF6FB63" box="[369,504,1163,1187]" italics="true" pageId="33" pageNumber="34">
|
||
<taxonomicName id="A5DF6AC0FF83FFA6FEECD0DF0FFAFB63" box="[369,500,1163,1187]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="33" pageNumber="34" phylum="Annelida" rank="species" species="pacifica">M. pacifica</taxonomicName>
|
||
.
|
||
</emphasis>
|
||
<bibRefCitation id="064E6CB2FF83FFA6FE60D0D80CF5FB62" author="Paxton" box="[509,763,1162,1186]" pageId="33" pageNumber="34" refString="Paxton, H. & Chou, L. M. (2000) Polychaetous annelids from the South China Sea. The Raffles Bulletin of Zoology, Supplement 8, 209 - 232." type="book chapter" year="2000">Paxton & Chou (2000)</bibRefCitation>
|
||
report the presence of
|
||
<taxonomicName id="A5DF6AC0FF83FFA6FC67D0D80AE0FB63" box="[1018,1262,1162,1187]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="33" pageNumber="34" phylum="Annelida" rank="species" species="pacifica">
|
||
<emphasis id="50ABCD51FF83FFA6FC67D0D80A65FB63" box="[1018,1131,1163,1187]" italics="true" pageId="33" pageNumber="34">Magelona</emphasis>
|
||
cf.
|
||
<emphasis id="50ABCD51FF83FFA6FB09D0D80AE0FB63" box="[1172,1262,1163,1187]" italics="true" pageId="33" pageNumber="34">pacifica</emphasis>
|
||
</taxonomicName>
|
||
from the South
|
||
<collectingCountry id="1AC851D3FF83FFA6FF0AD0FC0ED4FB07" box="[151,218,1199,1223]" name="China" pageId="33" pageNumber="34">China</collectingCountry>
|
||
Sea.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="2AC542C8FF83FFA6FF5AD0800B3EFA05" pageId="33" pageNumber="34" type="discussion">
|
||
<paragraph id="62601143FF83FFA6FF5AD0800B3EFA05" blockId="33.[151,1436,151,1477]" pageId="33" pageNumber="34">
|
||
<emphasis id="50ABCD51FF83FFA6FF5AD0800F3AFB2B" bold="true" box="[199,308,1235,1259]" pageId="33" pageNumber="34">Remarks</emphasis>
|
||
. The poor condition of the material examined herein makes a full re-description of this species from
|
||
<typeStatus id="BD64AFE1FF83FFA6FF0AD0AB0EC9FAD0" box="[151,199,1272,1296]" pageId="33" pageNumber="34">type</typeStatus>
|
||
material difficult, particularly the parapodia between chaetigers 5–8. Examination of newly collected material from the
|
||
<typeStatus id="BD64AFE1FF83FFA6FF62D1480F21FAF3" box="[255,303,1307,1331]" pageId="33" pageNumber="34">type</typeStatus>
|
||
locality would be prudent. The species sharing the most morphological similarities with
|
||
<taxonomicName id="A5DF6AC0FF83FFA6FA81D14F0B92FAF3" box="[1308,1436,1307,1331]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="33" pageNumber="34" phylum="Annelida" rank="species" species="pacifica">
|
||
<emphasis id="50ABCD51FF83FFA6FA81D14F0B92FAF3" box="[1308,1436,1307,1331]" italics="true" pageId="33" pageNumber="34">M. pacifica</emphasis>
|
||
</taxonomicName>
|
||
is
|
||
<taxonomicName id="A5DF6AC0FF83FFA6FF2DD1130F3CFA97" box="[176,306,1344,1367]" class="Polychaeta" family="Magelonidae" genus="Magelona" kingdom="Animalia" order="Spionida" pageId="33" pageNumber="34" phylum="Annelida" rank="species" species="montera" status="sp. nov.">
|
||
<emphasis id="50ABCD51FF83FFA6FF2DD1130F3CFA97" box="[176,306,1344,1367]" italics="true" pageId="33" pageNumber="34">M. montera</emphasis>
|
||
</taxonomicName>
|
||
<taxonomicNameLabel id="4B98702AFF83FFA6FEA7D16C0F9AFA97" box="[314,404,1343,1367]" pageId="33" pageNumber="34" rank="species">
|
||
<emphasis id="50ABCD51FF83FFA6FEA7D16C0F9AFA97" bold="true" box="[314,404,1343,1367]" pageId="33" pageNumber="34">sp. nov.</emphasis>
|
||
</taxonomicNameLabel>
|
||
, and their affinities are discussed above for the justification of the new species. Several features differ between Monro’s original description and this re-description. In particular, the presence of triangular processes at the inner margins of chaetal rows (DML and VML) in the abdomen. Also, the presence of triangular postchaetal lamellae in the neuropodia of the 8th chaetiger were not mentioned in the original description.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |