251 lines
19 KiB
XML
251 lines
19 KiB
XML
<document ID-DOI="http://dx.doi.org/10.3897/BDJ.3.e5738" ID-PMC="PMC4568400" ID-Pensoft-Pub="1314-2828-3-5738" ID-PubMed="26379464" ModsDocAuthor="" ModsDocDate="2015" ModsDocID="1314-2828-3-e5738" ModsDocOrigin="Biodiversity Data Journal 3" ModsDocTitle="Description of Aegialoalaimusbratteni sp. n. from Skagerrak and a review of the genus (Aegialoalaimidae, Nematoda incertae sedis)" checkinTime="1451253078625" checkinUser="pensoft" docAuthor="Holovachov, Oleksandr" docDate="2015" docId="624A5CCBD2986791413E289C81B88118" docLanguage="en" docName="BiodivDatJour 3: e5738" docOrigin="Biodiversity Data Journal 3" docSource="http://dx.doi.org/10.3897/BDJ.3.e5738" docTitle="Aegialoalaimus bratteni Holovachov, sp. n." docType="treatment" docVersion="3" lastPageNumber="5738" masterDocId="FFA3E50FFF964F28EB27FFBCD310FFE9" masterDocTitle="Description of Aegialoalaimusbratteni sp. n. from Skagerrak and a review of the genus (Aegialoalaimidae, Nematoda incertae sedis)" masterLastPageNumber="5738" masterPageNumber="5738" pageNumber="5738" updateTime="1668123163944" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>Description of Aegialoalaimusbratteni sp. n. from Skagerrak and a review of the genus (Aegialoalaimidae, Nematoda incertae sedis)</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Holovachov, Oleksandr</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>Biodiversity Data Journal</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2015</mods:date>
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<mods:detail type="volume">
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<mods:number>3</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>5738</mods:start>
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<mods:end>5738</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:location>
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<mods:url>http://dx.doi.org/10.3897/BDJ.3.e5738</mods:url>
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</mods:location>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">http://dx.doi.org/10.3897/BDJ.3.e5738</mods:identifier>
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<mods:identifier type="Pensoft-Pub">1314-2828-3-5738</mods:identifier>
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</mods:mods>
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<treatment LSID="urn:lsid:plazi:treatment:624A5CCBD2986791413E289C81B88118" httpUri="http://treatment.plazi.org/id/624A5CCBD2986791413E289C81B88118" lastPageNumber="5738" pageId="0" pageNumber="5738">
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<subSubSection pageId="0" pageNumber="5738" type="nomenclature">
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<paragraph pageId="0" pageNumber="5738">
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<taxonomicName LSID="urn:lsid:zoobank.org:act:FD17D2BA-920B-409F-8DAD-5847310DCFF7" authority="Holovachov" class="Adenophorea" family="Aulolaimidae" genus="Aegialoalaimus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Aegialoalaimus bratteni" order="Araeolaimida" pageId="0" pageNumber="5738" phylum="Nematoda" rank="species" species="bratteni">Aegialoalaimus bratteni Holovachov</taxonomicName>
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<taxonomicNameLabel pageId="0" pageNumber="5738">sp. n.</taxonomicNameLabel>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="5738" type="materials_examined">
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<paragraph pageId="0" pageNumber="5738">Materials</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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Type status:
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<typeStatus pageId="0" pageNumber="5738">Holotype</typeStatus>
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. Location: waterBody: Skagerrak; country:
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<collectingCountry pageId="0" pageNumber="5738">Sweden</collectingCountry>
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; verbatimDepth: 352-374 m; verbatimLatitude:
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="58.321">N 58° 19' 15.6''</geoCoordinate>
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-20.9''; verbatimLongitude:
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="10.49264">E 10° 29' 33.5''</geoCoordinate>
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-34.0''; Identification: identifiedBy: O. Holovachov; Event: year: 2012; month: October; day: 10; habitat: soft bottom; Record Level: datasetID: SMNH
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<normalizedToken originalValue="Type–">Type-</normalizedToken>
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8763; institutionCode:
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<collectionCode pageId="0" pageNumber="5738">Department of Zoology, Swedish Museum of Natural History</collectionCode>
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; collectionCode:
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<collectionCode pageId="0" pageNumber="5738">invertebrate type collection</collectionCode>
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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Type status:
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<typeStatus pageId="0" pageNumber="5738">Paratype</typeStatus>
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. Location: waterBody: Skagerrak; country:
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<collectingCountry pageId="0" pageNumber="5738">Sweden</collectingCountry>
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; verbatimDepth: 352-374 m; verbatimLatitude:
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="58.321">N 58° 19' 15.6''</geoCoordinate>
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-20.9''; verbatimLongitude:
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="10.49264">E 10° 29' 33.5''</geoCoordinate>
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-34.0''; Identification: identifiedBy: O. Holovachov; Event: year: 2012; month: October; day: 10; habitat: soft bottom; Record Level: datasetID: SMNH
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<normalizedToken originalValue="Type–">Type-</normalizedToken>
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8763; institutionCode:
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<collectionCode pageId="0" pageNumber="5738">Department of Zoology, Swedish Museum of Natural History</collectionCode>
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; collectionCode:
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<collectionCode pageId="0" pageNumber="5738">invertebrate type collection</collectionCode>
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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Type status:
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<typeStatus pageId="0" pageNumber="5738">Other material</typeStatus>
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. Location: waterBody: Skagerrak; country:
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<collectingCountry pageId="0" pageNumber="5738">Sweden</collectingCountry>
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; verbatimDepth: 232-240 m; verbatimLatitude:
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<geoCoordinate direction="north" orientation="latitude" precision="1" value="58.460194">N 58° 27' 36.7''</geoCoordinate>
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-43.3''; verbatimLongitude:
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<geoCoordinate direction="east" orientation="longitude" precision="1" value="10.547778">E 10° 32' 52.0''</geoCoordinate>
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-59.4''; Identification: identifiedBy: O. Holovachov; Event: year: 2012; month: October; day: 12; habitat: soft bottom; Record Level: datasetID: #147072; institutionCode:
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<collectionCode pageId="0" pageNumber="5738">Department of Zoology, Swedish Museum of Natural History</collectionCode>
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; collectionCode:
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<collectionCode pageId="0" pageNumber="5738">general invertebrate collection</collectionCode>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="5738" type="description">
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<paragraph pageId="0" pageNumber="5738">Description</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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Measurements. Male holotype: L=1754
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, a=38.1, b=9.6, c=15.4,
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<normalizedToken originalValue="c´">c'</normalizedToken>
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=2.9, T=62.8%. Male paratype: L=1733
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, a=35.4, b=9.2; c=13.8,
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<normalizedToken originalValue="c´">c'</normalizedToken>
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=3.1, T=54.9%. Additional male: L=1492
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<normalizedToken originalValue="µm">µm</normalizedToken>
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, a=?, b=8.6, c=13.0,
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<normalizedToken originalValue="c´">c'</normalizedToken>
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=2.6, T=53.8%.
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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Male. (Fig. 1) Body slender, cylindrical over most of its length, tapering anteriorly in the anterior half of pharyngeal region and posteriorly on tail; usually straight or weakly ventrally curved upon fixation; maximum body diameter is 46-49
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<normalizedToken originalValue="µm">µm</normalizedToken>
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. Cuticle weakly annulated externally, but with distinct transverse striation of inner layers; annules are 1
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<normalizedToken originalValue="µm">µm</normalizedToken>
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wide, without external ornamentation. Lateral field absent. Crystalloids absent. Body pores and epidermal glands absent. Somatic sensilla present, small papilliform in shape, most distinct along the tail. Labial region rounded, continuous with the body contour, 12.5-13.0
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<normalizedToken originalValue="µm">µm</normalizedToken>
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wide; lips fused. Inner labial sensilla indistinct. Outer labial sensill pore-like, their nerve endings are distinct. Cephalic sensilla small papilliform, 0.5-1.0
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long; their bases are located 5-6
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<normalizedToken originalValue="µm">µm</normalizedToken>
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from the anterior body end. Subcephalic and cervical sensilla absent. Amphidial fovea circular, 10.0-10.5
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in diameter, with distinct sclerotized margin; its anterior end is located posterior to cephalic sensilla bases, 14-16
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<normalizedToken originalValue="µm">µm</normalizedToken>
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from the anterior body end. Ocelli absent.
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">Pharyngeal region is 174-189 m long. Nerve ring surrounds the pharynx at 55.0-58.2% of its length. Hemizonid located at the level with the nerve ring. Secretory-excretory system present; renette cell located on ventral and ventrosublateral sides of the body along the posterior part of pharynx; it extends anteriorly and forms small excretory ampulla just posterior to the nerve ring level. Excretory canal absent, excretory ampulla opens to the exterior on ventral side of the body, at the level with the nerve ring, at 52.9-66.6% of the pharyngeal region length.</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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Oral opening terminal. Buccal cavity is weakly developed; cheilostom is a narrow tube 3-5
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long; pharyngostom is indistinguishable from the sclerotized lumen of the pharynx. Pharynx divided into two sections: anterior tubular part and posterior (basal) bulb. Tubular part of the pharynx is 138-151
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long and 3-4
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<normalizedToken originalValue="µm">µm</normalizedToken>
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wide; it is surrounded by thin sheath of tissue. Basal bulb is strongly muscularized; 30-33
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long and 24-28 m wide. Nucleus of the dorsal pharyngeal gland is visible in the middle of the dorsal sector of the basal bulb. Subventral pharyngeal glands indistinct. Pharyngeal gland orifices indistinct. Cardia is 15-18
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, its posterior part is embedded in the intestine.
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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Reproductive system is diorchic, both anterior and posterior testes are outstretched anteriad. Spicules are 20-29
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, paired and symmetrical, straight in shape; with conoid shaft and small funnel-shaped manubrium. Gubernaculum absent. Supplements absent. Tail is 114-126
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long, conoid to subcylindrical in shape, straight or weakly curved ventrad; with bluntly rounded terminus. Caudal glands present, they open to the exterior through common spinneret. Caudal gland nuclei are incaudal.
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">Female. Not found.</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="5738" type="diagnosis">
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<paragraph pageId="0" pageNumber="5738">Diagnosis</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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<taxonomicName class="Adenophorea" family="Aulolaimidae" genus="Aegialoalaimus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Aegialoalaimus bratteni" order="Araeolaimida" pageId="0" pageNumber="5738" phylum="Nematoda" rank="species" species="bratteni">Aegialoalaimus bratteni</taxonomicName>
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sp. n. is particularly characterized by 1.5-1.8 mm long body, short papilliform cephalic sensilla, excretory pore opening just posterior to the nerve ring level, straight spicules, supplements and gubernaculum absent.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="0" pageNumber="5738" type="taxon discussion">
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<paragraph pageId="0" pageNumber="5738">Taxon discussion</paragraph>
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<paragraph pageId="0" pageNumber="5738">The new species can be differentiated from:</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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<taxonomicName class="Adenophorea" family="Aulolaimidae" genus="Aegialoalaimus" higherTaxonomySource="CoL" kingdom="Animalia" lsidName="Aegialoalaimus elegans" order="Araeolaimida" pageId="0" pageNumber="5738" phylum="Nematoda" rank="species" species="elegans">Aegialoalaimus elegans</taxonomicName>
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(as described by
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<bibRefCitation author="de Man, J. G." journalOrPublisher="Me ́ moires de la Socie ́ te ́ zoologique de France" pageId="0" pageNumber="5738" pagination="33 - 90" title="Sur quelques especes nouvelles ou peu connues de nematodes libres habitant les cotes de la Zelande" volume="20" year="1907">de Man 1907</bibRefCitation>
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,
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<bibRefCitation author="Schuurmans Stekhoven, J. H." journalOrPublisher="Zeitschrift fu ̈ r Morphologie und O ̈ kologie der Tiere" pageId="0" pageNumber="5738" pagination="613 - 678" title="Oekologische und morphologische Notizen ueber Zuiderseenematoden. I. Dei westliche Haefte der Zuidersee." volume="20" year="1931">Schuurmans Stekhoven 1931</bibRefCitation>
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,
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<bibRefCitation author="Boucher, G." journalOrPublisher="Bulletin du Muse ́ um national d'histoire naturelle Paris" pageId="0" pageNumber="5738" pagination="85 - 122" title="Nematodes des sables fins infralittoraux de la Pierre Noire (Manche occidentale). III. Araeolaimida et Monhysterida" volume="427" year="1977">
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Boucher and
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<normalizedToken originalValue="Helléouët">Helleouet</normalizedToken>
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1977
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</bibRefCitation>
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,
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<bibRefCitation author="Jensen, P." journalOrPublisher="Cahiers de Biologie Marine" pageId="0" pageNumber="5738" pagination="221 - 231" title="Four NematodaAraeolaimida from the Oresund, Denmark, with remarks on the oesophageal structures in Aegialoalaimus" volume="192" year="1978">Jensen 1978b</bibRefCitation>
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,
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<bibRefCitation author="Bresslau, E." journalOrPublisher="Museed d'Histoire Naturelle" pageId="0" pageNumber="5738" title="Marine freilebende Nematoden aus der Nordsee" year="1940">Bresslau and Schuurmans-Stekhoven 1940</bibRefCitation>
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,
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<bibRefCitation author="Tchesunov, A. V." journalOrPublisher="Zoologicheskii Zhurnal" pageId="0" pageNumber="5738" pagination="5 - 18" title="A critical analysis of the family Aegialoalaimidae (Nematoda, Chromadoria), trends in evolutionary development of marine nematode pharynx and a proposal fo two new families" volume="69" year="1990">Tchesunov 1990</bibRefCitation>
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) in having longer body (1.5-1.8 mm in
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<taxonomicName lsidName="A. bratteni" pageId="0" pageNumber="5738" rank="species" species="bratteni">A. bratteni</taxonomicName>
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sp. n. vs 0.8-1.3 mm in
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<taxonomicName lsidName="A. elegans" pageId="0" pageNumber="5738" rank="species" species="elegans">A. elegans</taxonomicName>
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), shape and size of spicules (straight and 22-29
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long in
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<taxonomicName lsidName="A. bratteni" pageId="0" pageNumber="5738" rank="species" species="bratteni">A. bratteni</taxonomicName>
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sp. n. vs arcuate and 34
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long in
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<taxonomicName lsidName="A. elegans" pageId="0" pageNumber="5738" rank="species" species="elegans">A. elegans</taxonomicName>
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), absence of precloacal supplements (vs seven-eight in
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<taxonomicName lsidName="A. elegans" pageId="0" pageNumber="5738" rank="species" species="elegans">A. elegans</taxonomicName>
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), absence of gubernaculum (vs present in
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<taxonomicName lsidName="A. elegans" pageId="0" pageNumber="5738" rank="species" species="elegans">A. elegans</taxonomicName>
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);
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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<taxonomicName lsidName="A. setosa" pageId="0" pageNumber="5738" rank="species" species="setosa">A. setosa</taxonomicName>
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(as described by
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<bibRefCitation author="Bouwman, L. A." journalOrPublisher="Zoologische Jahrbuecher. Abteilung fuer Systematik, Oekologie und Geographie der Tiere" pageId="0" pageNumber="5738" pagination="335 - 385" title="A survey of nematodes from the Ems estuary: Part 1. Systematics." volume="108" year="1981">Bouwman 1981</bibRefCitation>
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,
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<bibRefCitation author="Holovachov, O." editor="Schmidt-Rhaesa, A." journalOrPublisher="de Gruyter" pageId="0" pageNumber="5738" title="Handbook of Zoology. Gastrotricha, Cycloneuralia, Gnathifera. Volume 2: Nematoda" year="2014">Holovachov 2014</bibRefCitation>
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) in having shorter tail (
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<normalizedToken originalValue="c´">c'</normalizedToken>
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=2.6-3.1 in
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<taxonomicName lsidName="A. bratteni" pageId="0" pageNumber="5738" rank="species" species="bratteni">A. bratteni</taxonomicName>
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sp. n. vs
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<normalizedToken originalValue="c´">c'</normalizedToken>
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=4.2 in
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<taxonomicName lsidName="A. setosa" pageId="0" pageNumber="5738" rank="species" species="setosa">A. setosa</taxonomicName>
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), shorter cephalic sensilla (0.5-1.0
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in
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<taxonomicName lsidName="A. bratteni" pageId="0" pageNumber="5738" rank="species" species="bratteni">A. bratteni</taxonomicName>
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sp. n. vs 9
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<normalizedToken originalValue="µm">µm</normalizedToken>
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in
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<taxonomicName lsidName="A. setosa" pageId="0" pageNumber="5738" rank="species" species="setosa">A. setosa</taxonomicName>
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), shape and size of spicules (straight and 22-29
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long in
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<taxonomicName lsidName="A. bratteni" pageId="0" pageNumber="5738" rank="species" species="bratteni">A. bratteni</taxonomicName>
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sp. n. vs arcuate and 40-45
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<normalizedToken originalValue="µm">µm</normalizedToken>
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long in
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<taxonomicName lsidName="A. setosa" pageId="0" pageNumber="5738" rank="species" species="setosa">A. setosa</taxonomicName>
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), absence of precloacal supplements (vs eight in
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<taxonomicName lsidName="A. setosa" pageId="0" pageNumber="5738" rank="species" species="setosa">A. setosa</taxonomicName>
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), absence of gubernaculum (vs present in
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<taxonomicName lsidName="A. setosa" pageId="0" pageNumber="5738" rank="species" species="setosa">A. setosa</taxonomicName>
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);
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">
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<taxonomicName lsidName="A. leptosoma" pageId="0" pageNumber="5738" rank="species" species="leptosoma">A. leptosoma</taxonomicName>
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(as described by
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<bibRefCitation author="Gagarin, V. G." journalOrPublisher="Zoologicheskii Zhurnal" pageId="0" pageNumber="5738" pagination="1155 - 1160" title="Thalassomonhysterapygmaea sp. n. and Aegialoalaimusleptosoma sp. n. (Nematoda, Chromadorea) from Vietnam Seachore" volume="91" year="2012">Gagarin 2012</bibRefCitation>
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) in having longer body (1.5-1.8 mm in
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<taxonomicName lsidName="A. bratteni" pageId="0" pageNumber="5738" rank="species" species="bratteni">A. bratteni</taxonomicName>
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sp. n. vs 0.5-0.7 mm in
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<taxonomicName lsidName="A. leptosoma" pageId="0" pageNumber="5738" rank="species" species="leptosoma">A. leptosoma</taxonomicName>
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) and other measurements, shape of spicules (straight in
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<taxonomicName lsidName="A. bratteni" pageId="0" pageNumber="5738" rank="species" species="bratteni">A. bratteni</taxonomicName>
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sp. n. vs arcuate in
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<taxonomicName lsidName="A. leptosoma" pageId="0" pageNumber="5738" rank="species" species="leptosoma">A. leptosoma</taxonomicName>
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), absence of precloacal supplements (vs three-five in
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<taxonomicName lsidName="A. leptosoma" pageId="0" pageNumber="5738" rank="species" species="leptosoma">A. leptosoma</taxonomicName>
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), absence of gubernaculum (vs present in
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<taxonomicName lsidName="A. leptosoma" pageId="0" pageNumber="5738" rank="species" species="leptosoma">A. leptosoma</taxonomicName>
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).
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</paragraph>
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<paragraph pageId="0" pageNumber="5738">Further characters separating all species of the genus are listed in Table 1.</paragraph>
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</subSubSection>
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</treatment>
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</document> |