187 lines
32 KiB
XML
187 lines
32 KiB
XML
<document id="C7A129E21D6D0885595B3B45C4B1B149" ID-DOI="10.5281/zenodo.174347" ID-GBIF-Dataset="3d71c6df-0cab-440a-82fc-13fc024f855c" ID-ISSN="1175-5326" ID-Zenodo-Dep="174347" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" checkinTime="1459795686746" checkinUser="plazi" docAuthor="Ituarte, Cristián & Korniushin, Alexei Victor" docDate="2006" docId="03CF87D4FF9B0E52FE8448F869E8EAB5" docLanguage="en" docName="zt01338p047.pdf" docOrigin="Zootaxa 1338" docStyle="DocumentStyle:FA7E419B012A62B0FC3AC15A186C3DAF.3:Zootaxa.2001-2006.journal_article" docStyleId="FA7E419B012A62B0FC3AC15A186C3DAF" docStyleName="Zootaxa.2001-2006.journal_article" docStyleVersion="3" docTitle="Pisidium sterkianum Pilsbry 1897" docType="treatment" docVersion="8" lastPageNumber="41" masterDocId="FFF6FFACFF9D0E5AFF8C4E7E6D4BEB63" masterDocTitle="Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America" masterLastPageNumber="47" masterPageNumber="33" pageNumber="39" updateTime="1698219706233" updateUser="plazi">
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<mods:title id="CFFF3C1484649D9DFEA7451C2B6859E2">Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America</mods:title>
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<mods:namePart id="756F8AFCC439BFADDB3777BAF2D8295B">Ituarte, Cristián</mods:namePart>
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<mods:namePart id="68497E52654D208F20E33116AC32380C">Korniushin, Alexei Victor</mods:namePart>
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<mods:title id="1A8E96C05BF2E59BAF107C66637CB72C">Zootaxa</mods:title>
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<mods:part id="5C0A4F58D425AC5341B2C7B57D818E65">
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<mods:date id="EF2607204937392494453D5F6FCA13ED">2006</mods:date>
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<mods:identifier id="810E7013F2604FC737BAF23B9B1D374F" type="ISSN">1175-5326</mods:identifier>
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<treatment id="03CF87D4FF9B0E52FE8448F869E8EAB5" ID-DOI="http://doi.org/10.5281/zenodo.6260767" ID-GBIF-Taxon="119351083" ID-Zenodo-Dep="6260767" LSID="urn:lsid:plazi:treatment:03CF87D4FF9B0E52FE8448F869E8EAB5" httpUri="http://treatment.plazi.org/id/03CF87D4FF9B0E52FE8448F869E8EAB5" lastPageId="8" lastPageNumber="41" pageId="6" pageNumber="39">
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<subSubSection id="C37C6549FF9B0E5CFE8448F86CD8EDA7" pageId="6" pageNumber="39" type="nomenclature">
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<paragraph id="8BD936C2FF9B0E5CFE8448F86FE0EDC3" blockId="6.[264,683,1670,1732]" box="[264,683,1670,1696]" pageId="6" pageNumber="39">
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<heading id="D09181AEFF9B0E5CFE8448F86FE0EDC3" bold="true" box="[264,683,1670,1696]" fontSize="11" level="1" pageId="6" pageNumber="39" reason="1">
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<taxonomicName id="4C664D41FF9B0E5CFE8448F86FE0EDC3" authority="Pilsbry, 1897" authorityName="Pilsbry" authorityYear="1897" box="[264,683,1670,1696]" class="Bivalvia" family="Sphaeriidae" genus="Pisidium" kingdom="Animalia" order="Veneroida" pageId="6" pageNumber="39" phylum="Mollusca" rank="species" species="sterkianum">
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<emphasis id="B912EAD0FF9B0E5CFE8448F86FE0EDC3" bold="true" box="[264,683,1670,1696]" pageId="6" pageNumber="39">
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<emphasis id="B912EAD0FF9B0E5CFE8448F86F4FEDC3" bold="true" box="[264,516,1670,1696]" italics="true" pageId="6" pageNumber="39">Pisidium sterkianum</emphasis>
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<bibRefCitation id="EFF74B33FF9B0E5CFD8748F86FE0EDC3" author="Pilsbry" box="[523,683,1670,1696]" pageId="6" pageNumber="47" refString="Pilsbry, H. A. (1897) New species of mollusks from Uruguay. Proceedings of the Academy of Natural Sciences of Philadelphia, May, 1897, 290 - 298 + pl." type="proceedings paper" year="1897">Pilsbry, 1897</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="8BD936C2FF9B0E5CFE8448D46CD8EDA7" blockId="6.[264,683,1670,1732]" box="[264,403,1706,1732]" pageId="6" pageNumber="39">
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<figureCitation id="135D2A47FF9B0E5CFE8448D46C3CEDA7" box="[264,375,1706,1732]" captionStart="FIGURES 5 A – D" captionStartId="8.[264,382,842,866]" captionTargetBox="[264,1322,526,817]" captionTargetId="figure@8.[264,1323,526,818]" captionTargetPageId="8" captionText="FIGURES 5 A – D: Pisidium sterkianum. A, B. Syntypes (ANSP 70490). A. Right valve, lateral view. B. Posterior view. C, D. Pisidium sterkianum. Specimens from Arroyo Miguelín (MLP 5061). C. Left valve, lateral view. D. Left valve, inner view. Scale bars: A – D = 1 mm." httpUri="https://zenodo.org/record/174352/files/figure.png" pageId="6" pageNumber="39">Figures 5</figureCitation>
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,
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<figureCitation id="135D2A47FF9B0E5CFE0848D46CD8EDA7" box="[388,403,1706,1732]" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="6" pageNumber="39">6</figureCitation>
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</paragraph>
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</subSubSection>
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<subSubSection id="C37C6549FF9B0E5CFE8448846E1EEC73" box="[264,853,1785,1809]" pageId="6" pageNumber="39" type="reference_group">
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<paragraph id="8BD936C2FF9B0E5CFE8448846E1EEC73" blockId="6.[264,853,1785,1809]" box="[264,853,1785,1809]" pageId="6" pageNumber="39">
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<treatmentCitationGroup id="AB7611ECFF9B0E5CFE8448846E1EEC73" box="[264,853,1785,1809]" pageId="6" pageNumber="39">
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<taxonomicName id="4C664D41FF9B0E5CFE8448846FE3EC73" authority="Pilsbry, 1897:291" authorityName="Pilsbry" authorityPageNumber="291" authorityYear="1897" box="[264,680,1785,1809]" class="Bivalvia" family="Sphaeriidae" genus="Pisidium" kingdom="Animalia" order="Veneroida" pageId="6" pageNumber="39" phylum="Mollusca" rank="species" species="sterkianum">
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<emphasis id="B912EAD0FF9B0E5CFE8448846CAFEC72" box="[264,484,1786,1809]" italics="true" pageId="6" pageNumber="39">Pisidium sterkianum</emphasis>
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<treatmentCitation id="0AC710D3FF9B0E5CFE6748876FE3EC73" author="Pilsbry" box="[491,680,1785,1808]" page="291" pageId="6" pageNumber="39" year="1897">
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<bibRefCitation id="EFF74B33FF9B0E5CFE6748876F30EC73" author="Pilsbry" box="[491,635,1785,1808]" pageId="6" pageNumber="47" refString="Pilsbry, H. A. (1897) New species of mollusks from Uruguay. Proceedings of the Academy of Natural Sciences of Philadelphia, May, 1897, 290 - 298 + pl." type="proceedings paper" year="1897">Pilsbry, 1897</bibRefCitation>
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:291
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</treatmentCitation>
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</taxonomicName>
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, pl. 6, figs. 1–4.
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</treatmentCitationGroup>
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</paragraph>
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</subSubSection>
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<subSubSection id="C37C6549FF9B0E5DFE84493F6E6EEDCD" lastPageId="7" lastPageNumber="40" pageId="6" pageNumber="39" type="description">
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<paragraph id="8BD936C2FF9B0E5DFE84493F69D8E85D" blockId="6.[264,1322,1857,1884]" lastBlockId="7.[264,1323,284,1870]" lastPageId="7" lastPageNumber="40" pageId="6" pageNumber="39">
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<emphasis id="B912EAD0FF9B0E5CFE84493F6CE9EC38" bold="true" box="[264,418,1857,1883]" pageId="6" pageNumber="39">Description:</emphasis>
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Shell medium to large (maximum L: 6,1 mm), somewhat high (I H/L= 81.9
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<emphasis id="B912EAD0FF9A0E5DFE844F626C53EA56" box="[264,280,284,309]" italics="true" pageId="7" pageNumber="40">±</emphasis>
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1.8), somewhat inflated (Ci= 69.3
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<emphasis id="B912EAD0FF9A0E5DFD4F4F626F98EA56" box="[707,723,284,309]" italics="true" pageId="7" pageNumber="40">±</emphasis>
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5,4) (
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<figureCitation id="135D2A47FF9A0E5DFC924F626E36EA55" box="[798,893,284,310]" captionStart="FIGURES 5 A – D" captionStartId="8.[264,382,842,866]" captionTargetBox="[264,1322,526,817]" captionTargetId="figure@8.[264,1323,526,818]" captionTargetPageId="8" captionText="FIGURES 5 A – D: Pisidium sterkianum. A, B. Syntypes (ANSP 70490). A. Right valve, lateral view. B. Posterior view. C, D. Pisidium sterkianum. Specimens from Arroyo Miguelín (MLP 5061). C. Left valve, lateral view. D. Left valve, inner view. Scale bars: A – D = 1 mm." httpUri="https://zenodo.org/record/174352/files/figure.png" pageId="7" pageNumber="40">Fig. 5B</figureCitation>
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). Shell outline ovate, dorsal margin shorter than ventral margin; ventral margin evenly and widely curved. Anterior end produced, posterior end somewhat truncated. Beaks full, posteriorly displaced (located at about 58% of shell length) well visible above dorsal margin. Shell surface fine and regularly striated, straw-yellowish (
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<figureCitation id="135D2A47FF9A0E5DFD254FC26E62EAB5" box="[681,809,444,470]" captionStart="FIGURES 5 A – D" captionStartId="8.[264,382,842,866]" captionTargetBox="[264,1322,526,817]" captionTargetId="figure@8.[264,1323,526,818]" captionTargetPageId="8" captionText="FIGURES 5 A – D: Pisidium sterkianum. A, B. Syntypes (ANSP 70490). A. Right valve, lateral view. B. Posterior view. C, D. Pisidium sterkianum. Specimens from Arroyo Miguelín (MLP 5061). C. Left valve, lateral view. D. Left valve, inner view. Scale bars: A – D = 1 mm." httpUri="https://zenodo.org/record/174352/files/figure.png" pageId="7" pageNumber="40">Fig. 5A, C</figureCitation>
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). Hinge plate not solid, stretching markedly at sides of cardinal teeth. Hinge line widely curve, moderately long (Hil/L= 58
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<emphasis id="B912EAD0FF9A0E5DFB2A4F9A69FDEA9E" box="[1190,1206,484,509]" italics="true" pageId="7" pageNumber="40">±</emphasis>
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2.7) (
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<figureCitation id="135D2A47FF9A0E5DFB774F9A6C7BE945" captionStart="FIGURES 5 A – D" captionStartId="8.[264,382,842,866]" captionTargetBox="[264,1322,526,817]" captionTargetId="figure@8.[264,1323,526,818]" captionTargetPageId="8" captionText="FIGURES 5 A – D: Pisidium sterkianum. A, B. Syntypes (ANSP 70490). A. Right valve, lateral view. B. Posterior view. C, D. Pisidium sterkianum. Specimens from Arroyo Miguelín (MLP 5061). C. Left valve, lateral view. D. Left valve, inner view. Scale bars: A – D = 1 mm." httpUri="https://zenodo.org/record/174352/files/figure.png" pageId="7" pageNumber="40">Fig. 5D</figureCitation>
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). Hinge: Right valve: cardinal tooth (C3) enlarged at posterior end in a slightly sulcated cup; right lateral teeth well developed, the inner anterior (A1) a long broadly curved lamella, cusp low, sub-central or slightly displaced forward, the outer anterior (A3) shorter with cusp distal. Posterior lateral teeth (P1 and P3) nearly straight. Left valve (
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<figureCitation id="135D2A47FF9A0E5DFB304CFA6856E9FD" box="[1212,1309,644,670]" captionStart="FIGURES 5 A – D" captionStartId="8.[264,382,842,866]" captionTargetBox="[264,1322,526,817]" captionTargetId="figure@8.[264,1323,526,818]" captionTargetPageId="8" captionText="FIGURES 5 A – D: Pisidium sterkianum. A, B. Syntypes (ANSP 70490). A. Right valve, lateral view. B. Posterior view. C, D. Pisidium sterkianum. Specimens from Arroyo Miguelín (MLP 5061). C. Left valve, lateral view. D. Left valve, inner view. Scale bars: A – D = 1 mm." httpUri="https://zenodo.org/record/174352/files/figure.png" pageId="7" pageNumber="40">Fig. 5D</figureCitation>
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): inner cardinal tooth (C2) short, bent upward; outer cardinal (C4) slightly longer than C2, slender, evenly arcuate, overlapping C2 at posterior half. Anterior left lateral strong, high, cusp triangular shifted distally; posterior lateral (P2) reduced in size, with distal cusp. Ligament external, protruded, representing about 19.7 ± 2.7% of shell length.
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</paragraph>
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<paragraph id="8BD936C2FF9A0E5DFEB44D326CE5EF95" blockId="7.[264,1323,284,1870]" pageId="7" pageNumber="40">
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<emphasis id="B912EAD0FF9A0E5DFEB44D326CFEE805" bold="true" box="[312,437,844,870]" pageId="7" pageNumber="40">Anatomy:</emphasis>
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<emphasis id="B912EAD0FF9A0E5DFE494D326F68E806" box="[453,547,844,869]" italics="true" pageId="7" pageNumber="40">Mantle:</emphasis>
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Only anal mantle opening present. Pedal slit very long, its posterior end correspond to the branchial opening. Two well developed pairs of siphon retractors are noticeable; the upper retractors belonging to the anal siphon (
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<figureCitation id="135D2A47FF9A0E5DFB124DE2686EE8D5" box="[1182,1317,924,950]" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="7" pageNumber="40">Fig. 6A, B</figureCitation>
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: sr1), the lower ones correspond to the region of the branchial opening (lacking in this species) (
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<figureCitation id="135D2A47FF9A0E5DFEF54D926CB5EF65" box="[377,510,1004,1030]" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="7" pageNumber="40">Fig. 6A, B</figureCitation>
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: sr2), the lower retractor fibers are connected with the pre-siphonal suture (
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<figureCitation id="135D2A47FF9A0E5DFED34A6A6C94EF4D" box="[351,479,1044,1070]" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="7" pageNumber="40">Fig. 6A, B</figureCitation>
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: pss), between the siphon and the pedal slit. Inner radial mantle muscles long but rather thin, weak; posterior fibers converge to the lower siphon retractors, the other fibres form 6 to 7 bundles evenly arranged along the pedal slit. Bundles of the anterior and middle portion of pedal slit are equally developed. Scars of the inner radial muscles are small and usually not clear; when defined, they are separate from the pallial line (
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<figureCitation id="135D2A47FF9A0E5DFEC84AA26CEBEF95" box="[324,416,1244,1270]" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="7" pageNumber="40">Fig. 6C</figureCitation>
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).
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</paragraph>
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<paragraph id="8BD936C2FF9A0E5DFEB44B7A6C76EEDD" blockId="7.[264,1323,284,1870]" pageId="7" pageNumber="40">
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<emphasis id="B912EAD0FF9A0E5DFEB44B7A6C86EE7E" box="[312,461,1284,1309]" italics="true" pageId="7" pageNumber="40">Nephridium:</emphasis>
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Of closed
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<typeStatus id="54DD8860FF9A0E5DFDDE4B7A6FCCEE7D" box="[594,647,1284,1310]" pageId="7" pageNumber="40">type</typeStatus>
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, the pericardial duct is not visible as it is covered by the dorsal lobe (
|
||
<figureCitation id="135D2A47FF9A0E5DFE174B526CB3EE25" box="[411,504,1324,1350]" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="7" pageNumber="40">Fig. 6E</figureCitation>
|
||
); when viewed from dorsal side the organ is S-shaped because a part of the lateral loop is always visible, dorsal lobe rectangular; in some specimens, a small portion of the pericardial duct is visible from dorsal side (open
|
||
<typeStatus id="54DD8860FF9A0E5DFC704B026964EEF5" box="[1020,1071,1404,1430]" pageId="7" pageNumber="40">type</typeStatus>
|
||
of nephridium) (
|
||
<figureCitation id="135D2A47FF9A0E5DFB774B026C7BEEDD" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="7" pageNumber="40">Fig. 6D</figureCitation>
|
||
).
|
||
</paragraph>
|
||
<paragraph id="8BD936C2FF9A0E5DFEB44BB26E6EEDCD" blockId="7.[264,1323,284,1870]" pageId="7" pageNumber="40">
|
||
<emphasis id="B912EAD0FF9A0E5DFEB44BB26C24EE86" box="[312,367,1484,1509]" italics="true" pageId="7" pageNumber="40">Gill:</emphasis>
|
||
Only inner demibranch present. Brood pouch developing from thickenings in the dorsal portions of descending filaments (
|
||
<figureCitation id="135D2A47FF9A0E5DFD634B8A6E00ED6D" box="[751,843,1524,1550]" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="7" pageNumber="40">Fig. 6F</figureCitation>
|
||
). On later stages of development, brood pouch occupies the greatest part of the gill (
|
||
<figureCitation id="135D2A47FF9A0E5DFC8448626E2CED55" box="[776,871,1564,1590]" captionStart="FIGURES 6 A – G" captionStartId="8.[264,382,1639,1663]" captionTargetBox="[326,1265,1006,1604]" captionTargetId="figure@8.[302,1285,991,1619]" captionTargetPageId="8" captionText="FIGURES 6 A – G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr 1: anal siphon retractor; sr 2: retractor muscles corresponding to lacking inhalant opening)" httpUri="https://zenodo.org/record/174353/files/figure.png" pageId="7" pageNumber="40">Fig. 6G</figureCitation>
|
||
). The number of filaments involved in the formation of the brood pouch depends on the size of the maternal individual, varying from 13 (in a
|
||
<quantity id="4C9E9B27FF9A0E5DFE2548126F48EDE5" box="[425,515,1644,1670]" metricMagnitude="-3" metricUnit="m" metricValue="4.9" pageId="7" pageNumber="40" unit="mm" value="4.9">4.9 mm</quantity>
|
||
long specimen) to 20 (in a
|
||
<quantity id="4C9E9B27FF9A0E5DFCC848126ED5EDE5" box="[836,926,1644,1670]" metricMagnitude="-3" metricUnit="m" metricValue="5.2" pageId="7" pageNumber="40" unit="mm" value="5.2">5.2 mm</quantity>
|
||
length specimen). The number of embryos per brood pouch varied from 7 to 15.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C37C6549FF9A0E52FEB448C2690CEA55" lastPageId="8" lastPageNumber="41" pageId="7" pageNumber="40" type="materials_examined">
|
||
<paragraph id="8BD936C2FF9A0E52FEB448C2690CEA55" blockId="7.[264,1323,284,1870]" lastBlockId="8.[264,1322,284,470]" lastPageId="8" lastPageNumber="41" pageId="7" pageNumber="40">
|
||
<emphasis id="B912EAD0FF9A0E5DFEB448C26F0BEDB5" bold="true" box="[312,576,1724,1750]" pageId="7" pageNumber="40">Material examined:</emphasis>
|
||
<collectingCountry id="F3717652FF9A0E5DFDD548C26F8FEDB5" box="[601,708,1724,1750]" name="Uruguay" pageId="7" pageNumber="40">Uruguay</collectingCountry>
|
||
:
|
||
<typeStatus id="54DD8860FF9A0E5DFD6D48C26E07EDB5" box="[737,844,1724,1750]" pageId="7" pageNumber="40" type="syntype">Syntypes</typeStatus>
|
||
(
|
||
<collectionCode id="ED77AE07FF9A0E5DFCE148C26EF1EDB5" LSID="urn:lsid:biocol.org:col:34784" box="[877,954,1724,1750]" httpUri="http://biocol.org/urn:lsid:biocol.org:col:34784" name="Academy of Natural Sciences of Philadelphia" pageId="7" pageNumber="40">ANSP</collectionCode>
|
||
70490) Arroyo Miguelete, Montevideo (
|
||
<geoCoordinate id="EE525005FF9A0E5DFE32489A6F0CED9D" box="[446,583,1764,1790]" direction="south" orientation="latitude" pageId="7" pageNumber="40" precision="15" value="-34.858055">34°51'29”S</geoCoordinate>
|
||
,
|
||
<geoCoordinate id="EE525005FF9A0E5DFDE7489A6E4AED9D" box="[619,769,1764,1790]" direction="west" orientation="longitude" pageId="7" pageNumber="40" precision="15" value="-56.170834">56°10'15”W</geoCoordinate>
|
||
); Parque Arequita, Minas (
|
||
<geoCoordinate id="EE525005FF9A0E5DFB10489A686EED9D" box="[1180,1317,1764,1790]" direction="south" orientation="latitude" pageId="7" pageNumber="40" precision="15" value="-34.37">34°22'12”S</geoCoordinate>
|
||
,
|
||
<geoCoordinate id="EE525005FF9A0E5DFE8449726CD6EC45" box="[264,413,1804,1830]" direction="west" orientation="longitude" pageId="7" pageNumber="40" precision="15" value="-55.225002">55°13'30”W</geoCoordinate>
|
||
), Lavalleja Department (
|
||
<collectionCode id="ED77AE07FF9A0E5DFD5C49726E45EC45" box="[720,782,1804,1830]" httpUri="http://grbio.org/cool/66si-588n" name="Museo de La Plata" pageId="7" pageNumber="40">MLP</collectionCode>
|
||
5343); unnamed brook in the neighbors of Canelones City, Canelones Department (
|
||
<collectionCode id="ED77AE07FF9A0E5DFD73494A6E14EC2D" box="[767,863,1844,1870]" pageId="7" pageNumber="40">MHNM</collectionCode>
|
||
5602).
|
||
<collectingCountry id="F3717652FF9A0E5DFC44494A690AEC2D" box="[968,1089,1844,1870]" name="Argentina" pageId="7" pageNumber="40">Argentina</collectingCountry>
|
||
: Miguelín Rivulet, Ensenada, Buenos Aires Province (
|
||
<collectionCode id="ED77AE07FF950E52FD284F626FA9EA55" box="[676,738,284,310]" httpUri="http://grbio.org/cool/66si-588n" name="Museo de La Plata" pageId="8" pageNumber="41">MLP</collectionCode>
|
||
5058),
|
||
<specimenCount id="9D60FD4BFF950E52FCB14F626E86EA55" box="[829,973,284,310]" pageId="8" pageNumber="41" type="generic">4 specimens</specimenCount>
|
||
dissected.
|
||
</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C37C6549FF950E52FEB44F3D69E8EAB5" pageId="8" pageNumber="41" type="discussion">
|
||
<paragraph id="8BD936C2FF950E52FEB44F3D69E8EAB5" blockId="8.[264,1322,284,470]" pageId="8" pageNumber="41">
|
||
<emphasis id="B912EAD0FF950E52FEB44F3D6CF8EA3E" bold="true" box="[312,435,323,349]" pageId="8" pageNumber="41">Remarks:</emphasis>
|
||
<taxonomicName id="4C664D41FF950E52FE324F3A6FFFEA3E" box="[446,692,324,349]" class="Bivalvia" family="Sphaeriidae" genus="Pisidium" kingdom="Animalia" order="Veneroida" pageId="8" pageNumber="41" phylum="Mollusca" rank="species" species="sterkianum">
|
||
<emphasis id="B912EAD0FF950E52FE324F3A6FFFEA3E" box="[446,692,324,349]" italics="true" pageId="8" pageNumber="41">Pisidium sterkianum</emphasis>
|
||
</taxonomicName>
|
||
is easily identified by having an external ligament, clearly protruded, a unique feature among South American species. This only feature differentiate
|
||
<taxonomicName id="4C664D41FF950E52FE2E4FEA6F0EEACE" box="[418,581,404,429]" class="Bivalvia" family="Sphaeriidae" genus="Pisidium" kingdom="Animalia" order="Veneroida" pageId="8" pageNumber="41" phylum="Mollusca" rank="species" species="sterkianum">
|
||
<emphasis id="B912EAD0FF950E52FE2E4FEA6F0EEACE" box="[418,581,404,429]" italics="true" pageId="8" pageNumber="41">P. sterkianum</emphasis>
|
||
</taxonomicName>
|
||
from similar species such as
|
||
<taxonomicName id="4C664D41FF950E52FC394FEA6C0EEAB5" authority="Meier Brook, 1968" authorityName="Meier Brook" authorityYear="1968" class="Bivalvia" family="Sphaeriidae" genus="Pisidium" kingdom="Animalia" order="Veneroida" pageId="8" pageNumber="41" phylum="Mollusca" rank="species" species="forense">
|
||
<emphasis id="B912EAD0FF950E52FC394FEA6936EACE" box="[949,1149,404,429]" italics="true" pageId="8" pageNumber="41">Pisidium forense</emphasis>
|
||
Meier Brook, 1968
|
||
</taxonomicName>
|
||
,
|
||
<taxonomicName id="4C664D41FF950E52FEDD4FC26F8DEAB5" authority="Ituarte, 2000" authorityName="Ituarte" authorityYear="2000" box="[337,710,444,470]" class="Bivalvia" family="Sphaeriidae" genus="Pisidium" kingdom="Animalia" order="Veneroida" pageId="8" pageNumber="41" phylum="Mollusca" rank="species" species="pipoense">
|
||
<emphasis id="B912EAD0FF950E52FEDD4FC26F62EAB6" box="[337,553,444,469]" italics="true" pageId="8" pageNumber="41">Pisidium pipoense</emphasis>
|
||
<bibRefCitation id="EFF74B33FF950E52FDBC4FC26F8DEAB5" author="Ituarte" box="[560,710,444,470]" pageId="8" pageNumber="46" refString="Ituarte, C. F. (2000) Pisidium taraguyense and Pisidium pipoense, new species from Northeastern Argentina (Bivalvia: Sphaeriidae). The Veliger, 43, 51 - 57." type="journal article" year="2000">Ituarte, 2000</bibRefCitation>
|
||
</taxonomicName>
|
||
and
|
||
<taxonomicName id="4C664D41FF950E52FD734FC269D5EAB5" authority="Ituarte, 2000" authorityName="Ituarte" authorityYear="2000" box="[767,1182,444,470]" class="Bivalvia" family="Sphaeriidae" genus="Pisidium" kingdom="Animalia" order="Veneroida" pageId="8" pageNumber="41" phylum="Mollusca" rank="species" species="taraguyense">
|
||
<emphasis id="B912EAD0FF950E52FD734FC26EB5EAB6" box="[767,1022,444,469]" italics="true" pageId="8" pageNumber="41">Pisidium taraguyense</emphasis>
|
||
<bibRefCitation id="EFF74B33FF950E52FB894FC269D5EAB5" author="Ituarte" box="[1029,1182,444,470]" pageId="8" pageNumber="46" refString="Ituarte, C. F. (2000) Pisidium taraguyense and Pisidium pipoense, new species from Northeastern Argentina (Bivalvia: Sphaeriidae). The Veliger, 43, 51 - 57." type="journal article" year="2000">Ituarte, 2000</bibRefCitation>
|
||
</taxonomicName>
|
||
.
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |