116 lines
27 KiB
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116 lines
27 KiB
XML
<document id="309AFCFF7B581C6B269E96D1AF0FFBBC" ID-CLB-Dataset="7643" ID-DOI="10.1206/906.1" ID-GBIF-Dataset="15ad630f-eff2-451d-a5f8-22731ff53851" ID-ISSN="0003-0090" ID-Zenodo-Dep="4612269" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1615992761985" checkinUser="felipe" docAuthor="Lipke, Elisabeth & Michalik, Peter" docDate="2015" docId="03E487E03012216F2E37A01163747FB6" docLanguage="en" docName="BulAmeMusNatHis.2015.396.1-72.pdf" docOrigin="Bulletin of the American Museum of Natural History 2015 (396)" docSource="http://www.bioone.org/doi/10.1206/906.1" docStyle="DocumentStyle:C5E2DA72A22EF33813C92A197453A310.5:BulAmeMusNatHis.2011-.journal_article.0cover" docStyleId="C5E2DA72A22EF33813C92A197453A310" docStyleName="BulAmeMusNatHis.2011-.journal_article.0cover" docStyleVersion="5" docTitle="Neotrops poguazu Grismado and Ramirez 2013" docType="treatment" docVersion="5" lastPageNumber="12" masterDocId="FFDDFF98301921612E5DA448625E7969" masterDocTitle="Evolutionary Morphology Of The Primary Male Reproductive System And Spermatozoa Of Goblin Spiders (Oonopidae; Araneae)" masterLastPageNumber="72" masterPageNumber="1" pageNumber="12" updateTime="1698933598634" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
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<mods:title id="B06849A61767D4CFD516B9DE1B860DD6">Evolutionary Morphology Of The Primary Male Reproductive System And Spermatozoa Of Goblin Spiders (Oonopidae; Araneae)</mods:title>
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<treatment id="03E487E03012216F2E37A01163747FB6" ID-DOI="http://doi.org/10.5281/zenodo.4632224" ID-GBIF-Taxon="180671191" ID-Zenodo-Dep="4632224" LSID="urn:lsid:plazi:treatment:03E487E03012216F2E37A01163747FB6" httpUri="http://treatment.plazi.org/id/03E487E03012216F2E37A01163747FB6" lastPageId="14" lastPageNumber="12" pageId="11" pageNumber="12">
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<subSubSection id="C357657D3012216A2E37A01163DE7DE2" pageId="11" pageNumber="12" type="nomenclature">
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<paragraph id="8BF236F63012216A2E37A01163DE7DE2" blockId="11.[106,606,1112,1163]" pageId="11" pageNumber="12">
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<taxonomicName id="4C4D4D753012216A2E37A01163DE7DE2" ID-CoL="46W2F" authority="Grismado and Ramirez, 2013" authorityName="Grismado and Ramirez" authorityYear="2013" class="Arachnida" family="Oonopidae" genus="Neotrops" higherTaxonomySource="GBIF" kingdom="Animalia" order="Araneae" pageId="11" pageNumber="12" phylum="Arthropoda" rank="species" species="poguazu">
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<emphasis id="B939EAE43012216A2E37A01163667D07" box="[106,312,1113,1134]" italics="true" pageId="11" pageNumber="12">Neotrops poguazu</emphasis>
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<bibRefCitation id="EFDC4B073012216A2F1CA01063DE7DE2" author="Grismado, C. J. & M. J. Ramirez" pageId="11" pageNumber="12" pagination="1 - 150" refId="ref26769" refString="Grismado, C. J., and M. J. Ramirez. 2013. The New World goblin spiders of the genus Neotrops (Araneae: Oonopidae), part I. Bulletin of the American Museum of Natural History, 383: 1 - 150." type="journal article" year="2013">Grismado and Ramírez, 2013</bibRefCitation>
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</taxonomicName>
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</paragraph>
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</subSubSection>
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<subSubSection id="C357657D3012216F2E27A0EA63747FB6" lastPageId="14" lastPageNumber="15" pageId="11" pageNumber="12" type="description">
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<paragraph id="8BF236F63012216A2E27A0EA62E77CBB" blockId="11.[93,620,1186,1759]" pageId="11" pageNumber="12">
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SPERM TRANSFER FORM (
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<figureCitation id="13762A733012216A2F9CA0EA604C7DD3" box="[449,530,1186,1210]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11</figureCitation>
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): Ovalshaped synspermia (,10 Mm), comprising four sperm (
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<figureCitation id="13762A733012216A2EA6A0A963007D9E" box="[251,350,1249,1271]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11A</figureCitation>
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). In the periphery of the sperm conjugate, numerous membranes are visible (
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<figureCitation id="13762A733012216A2EA3A16863037C5C" box="[254,349,1312,1334]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11B</figureCitation>
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, arrow). Synspermia surrounded by a thin (,
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<quantity id="4CB59B133012216A2FC7A17763B27C3D" box="[410,492,1343,1364]" metricMagnitude="-8" metricUnit="m" metricValue="8.0" pageId="11" pageNumber="12" unit="nm" value="80.0">80 nm</quantity>
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) secretion sheath (
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<figureCitation id="13762A733012216A2E95A11663047C1D" box="[200,346,1374,1396]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11B, C</figureCitation>
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); cytoplasm electron dense within sperm conjugates of the ejaculatory duct (
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<figureCitation id="13762A733012216A2EA2A1D5633C7CDA" box="[255,354,1437,1459]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11D</figureCitation>
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), some mitochondria present.
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</paragraph>
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<paragraph id="8BF236F63012216A2E27A19061927DA3" blockId="11.[93,620,1186,1759]" lastBlockId="11.[667,1194,1112,1759]" pageId="11" pageNumber="12">
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SPERMATOZOA (
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<figureCitation id="13762A733012216A2F63A19063CC7C99" box="[318,402,1496,1520]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11</figureCitation>
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):
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<emphasis id="B939EAE43012216A2FF0A19262CA7F64" bold="true" pageId="11" pageNumber="12">Acrosomal complex:</emphasis>
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AV conical with wide subacrosomal space (
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<figureCitation id="13762A733012216A2EF3A25E631E7F45" box="[174,320,1558,1580]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">figs. 11A, C</figureCitation>
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), proximally sunken into the anterior pole of prcN (
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<figureCitation id="13762A733012216A2F9EA27B607B7F20" box="[451,549,1587,1609]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11C</figureCitation>
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). AF originates from subacrosomal space, extends into NC, but clearly ends before axonemal base.
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<emphasis id="B939EAE43012216A2EFBA2C463597FC8" bold="true" box="[166,263,1676,1697]" pageId="11" pageNumber="12">Nucleus:</emphasis>
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prcN deeply indented at its anterior pole (bowl shaped), irregularly shaped with irregularly condensed chromatin (
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<figureCitation id="13762A733012216A2CFEA010617B7D07" box="[675,805,1112,1134]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11A, B</figureCitation>
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). peN short, flattened, (
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<figureCitation id="13762A733012216A2A6AA01066C57D07" box="[1079,1179,1112,1134]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11D</figureCitation>
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). NC peripheral (
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<figureCitation id="13762A733012216A2D08A03F61C07DE4" box="[853,926,1143,1165]" captionStart="Fig" captionStartId="16.[150,188,1000,1019]" captionTargetBox="[128,1230,207,977]" captionTargetId="figure-266@16.[128,1230,207,977]" captionTargetPageId="16" captionText="Fig. 11. Characteristics of synspermia and spermatozoa of Neotrops poguazu. A: Sperm conjugates are surrounded by a thin secretion sheath. B: The chromatin is irregularly condensed. C: The AF extends toward the nucleus and projects into the periphery of the nucleus, surrounded by the NC. D: Within the ejaculatory duct sperm conjugates further differentiate. This includes further condensation of cytoplasm while peripheral constrictions recess." figureDoi="http://doi.org/10.5281/zenodo.4612303" httpUri="https://zenodo.org/record/4612303/files/figure.png" pageId="11" pageNumber="12">fig. 11</figureCitation>
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A–C).
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<emphasis id="B939EAE43012216A2DB2A03F663F7DE5" bold="true" box="[1007,1121,1143,1164]" pageId="11" pageNumber="12">Axoneme:</emphasis>
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proximal centriole longer than distal centriole, 9+3 microtubular pattern.
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</paragraph>
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<paragraph id="8BF236F63012216F2CE5A09C63747FB6" blockId="11.[667,1194,1112,1759]" lastBlockId="14.[128,654,1620,1759]" lastPageId="14" lastPageNumber="15" pageId="11" pageNumber="12">
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<emphasis id="B939EAE43012216A2CE5A09C61B37D81" box="[696,1005,1235,1257]" italics="true" pageId="11" pageNumber="12">Note on Spermiogenesis</emphasis>
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(
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<figureCitation id="13762A733012216A2A52A09B66037D80" box="[1039,1117,1235,1257]" captionStart="Fig" captionStartId="17.[116,155,1468,1487]" captionTargetBox="[99,1188,207,1445]" captionTargetId="figure-0@17.[99,1188,207,1445]" captionTargetPageId="17" captionText="Fig. 12. Characteristics of spermiogenesis of Neotrops poguazu. A: The small AV is bordered from the nucleus by a distinct electron-dense plate (magnified in inset). B: The chromatin starts condensation irregularly and appears fibrillar in midspermatids (inset). At the posterior pole of the nucleus, an irregularly shaped IF is formed through migration of the two centrioles toward the posterior pole of the nucleus. C: During further development, the AV enlarges and sinks deeply into the anterior portion of the nucleus, while the subacrosomal space widens. D: A small amount of secretion is attached to the proximal centriole within the wide IF. Note the elongated proximal centriole, which is arranged rectangular to the distal centriole. E: Distinct electron-dense lamellae are arranged around the base of the Ax (arrows)." figureDoi="http://doi.org/10.5281/zenodo.4612307" httpUri="https://zenodo.org/record/4612307/files/figure.png" pageId="11" pageNumber="12">fig. 12</figureCitation>
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): All stages of spermiogenesis present in the testis. Spermatids of the same developmental stage arranged in cysts. Early spermatids characterized by a large, oval nucleus surrounded by a manchette of microtubules and small AV (
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<figureCitation id="13762A733012216A2DA3A1CC66037CF0" box="[1022,1117,1412,1434]" captionStart="Fig" captionStartId="17.[116,155,1468,1487]" captionTargetBox="[99,1188,207,1445]" captionTargetId="figure-0@17.[99,1188,207,1445]" captionTargetPageId="17" captionText="Fig. 12. Characteristics of spermiogenesis of Neotrops poguazu. A: The small AV is bordered from the nucleus by a distinct electron-dense plate (magnified in inset). B: The chromatin starts condensation irregularly and appears fibrillar in midspermatids (inset). At the posterior pole of the nucleus, an irregularly shaped IF is formed through migration of the two centrioles toward the posterior pole of the nucleus. C: During further development, the AV enlarges and sinks deeply into the anterior portion of the nucleus, while the subacrosomal space widens. D: A small amount of secretion is attached to the proximal centriole within the wide IF. Note the elongated proximal centriole, which is arranged rectangular to the distal centriole. E: Distinct electron-dense lamellae are arranged around the base of the Ax (arrows)." figureDoi="http://doi.org/10.5281/zenodo.4612307" httpUri="https://zenodo.org/record/4612307/files/figure.png" pageId="11" pageNumber="12">fig. 12A</figureCitation>
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inset) that is separated from the nucleus by a distinct electron-dense border (
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<figureCitation id="13762A733012216A2A67A1F766C37CBC" box="[1082,1181,1471,1493]" captionStart="Fig" captionStartId="17.[116,155,1468,1487]" captionTargetBox="[99,1188,207,1445]" captionTargetId="figure-0@17.[99,1188,207,1445]" captionTargetPageId="17" captionText="Fig. 12. Characteristics of spermiogenesis of Neotrops poguazu. A: The small AV is bordered from the nucleus by a distinct electron-dense plate (magnified in inset). B: The chromatin starts condensation irregularly and appears fibrillar in midspermatids (inset). At the posterior pole of the nucleus, an irregularly shaped IF is formed through migration of the two centrioles toward the posterior pole of the nucleus. C: During further development, the AV enlarges and sinks deeply into the anterior portion of the nucleus, while the subacrosomal space widens. D: A small amount of secretion is attached to the proximal centriole within the wide IF. Note the elongated proximal centriole, which is arranged rectangular to the distal centriole. E: Distinct electron-dense lamellae are arranged around the base of the Ax (arrows)." figureDoi="http://doi.org/10.5281/zenodo.4612307" httpUri="https://zenodo.org/record/4612307/files/figure.png" pageId="11" pageNumber="12">fig. 12A</figureCitation>
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). The AF originates from the subacrosomal space (12C). The chromatin begins condensing in the center of the nucleus and appears fibrillar (
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<figureCitation id="13762A733012216A2D5FA27D61DB7F22" box="[770,901,1589,1611]" captionStart="Fig" captionStartId="17.[116,155,1468,1487]" captionTargetBox="[99,1188,207,1445]" captionTargetId="figure-0@17.[99,1188,207,1445]" captionTargetPageId="17" captionText="Fig. 12. Characteristics of spermiogenesis of Neotrops poguazu. A: The small AV is bordered from the nucleus by a distinct electron-dense plate (magnified in inset). B: The chromatin starts condensation irregularly and appears fibrillar in midspermatids (inset). At the posterior pole of the nucleus, an irregularly shaped IF is formed through migration of the two centrioles toward the posterior pole of the nucleus. C: During further development, the AV enlarges and sinks deeply into the anterior portion of the nucleus, while the subacrosomal space widens. D: A small amount of secretion is attached to the proximal centriole within the wide IF. Note the elongated proximal centriole, which is arranged rectangular to the distal centriole. E: Distinct electron-dense lamellae are arranged around the base of the Ax (arrows)." figureDoi="http://doi.org/10.5281/zenodo.4612307" httpUri="https://zenodo.org/record/4612307/files/figure.png" pageId="11" pageNumber="12">fig. 12A, B</figureCitation>
|
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). The small implantation fossa is irregularly shaped in early spermatids (
|
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<figureCitation id="13762A733012216A2CBFA23861327FEF" box="[738,876,1648,1670]" captionStart="Fig" captionStartId="17.[116,155,1468,1487]" captionTargetBox="[99,1188,207,1445]" captionTargetId="figure-0@17.[99,1188,207,1445]" captionTargetPageId="17" captionText="Fig. 12. Characteristics of spermiogenesis of Neotrops poguazu. A: The small AV is bordered from the nucleus by a distinct electron-dense plate (magnified in inset). B: The chromatin starts condensation irregularly and appears fibrillar in midspermatids (inset). At the posterior pole of the nucleus, an irregularly shaped IF is formed through migration of the two centrioles toward the posterior pole of the nucleus. C: During further development, the AV enlarges and sinks deeply into the anterior portion of the nucleus, while the subacrosomal space widens. D: A small amount of secretion is attached to the proximal centriole within the wide IF. Note the elongated proximal centriole, which is arranged rectangular to the distal centriole. E: Distinct electron-dense lamellae are arranged around the base of the Ax (arrows)." figureDoi="http://doi.org/10.5281/zenodo.4612307" httpUri="https://zenodo.org/record/4612307/files/figure.png" pageId="11" pageNumber="12">fig. 12B, B</figureCitation>
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inset). There is always a small amount of electron-dense, granular material associated with the proximal centriole (
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<figureCitation id="13762A733012216A2C8AA28161647FB6" box="[727,826,1737,1759]" captionStart="Fig" captionStartId="17.[116,155,1468,1487]" captionTargetBox="[99,1188,207,1445]" captionTargetId="figure-0@17.[99,1188,207,1445]" captionTargetPageId="17" captionText="Fig. 12. Characteristics of spermiogenesis of Neotrops poguazu. A: The small AV is bordered from the nucleus by a distinct electron-dense plate (magnified in inset). B: The chromatin starts condensation irregularly and appears fibrillar in midspermatids (inset). At the posterior pole of the nucleus, an irregularly shaped IF is formed through migration of the two centrioles toward the posterior pole of the nucleus. C: During further development, the AV enlarges and sinks deeply into the anterior portion of the nucleus, while the subacrosomal space widens. D: A small amount of secretion is attached to the proximal centriole within the wide IF. Note the elongated proximal centriole, which is arranged rectangular to the distal centriole. E: Distinct electron-dense lamellae are arranged around the base of the Ax (arrows)." figureDoi="http://doi.org/10.5281/zenodo.4612307" httpUri="https://zenodo.org/record/4612307/files/figure.png" pageId="11" pageNumber="12">fig. 12D</figureCitation>
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). A collar of electron-dense, platelike secretions surrounds the base of the Ax (
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<figureCitation id="13762A733017216F2EEBA23963487FEE" box="[182,278,1649,1671]" captionStart="Fig" captionStartId="17.[116,155,1468,1487]" captionTargetBox="[99,1188,207,1445]" captionTargetId="figure-0@17.[99,1188,207,1445]" captionTargetPageId="17" captionText="Fig. 12. Characteristics of spermiogenesis of Neotrops poguazu. A: The small AV is bordered from the nucleus by a distinct electron-dense plate (magnified in inset). B: The chromatin starts condensation irregularly and appears fibrillar in midspermatids (inset). At the posterior pole of the nucleus, an irregularly shaped IF is formed through migration of the two centrioles toward the posterior pole of the nucleus. C: During further development, the AV enlarges and sinks deeply into the anterior portion of the nucleus, while the subacrosomal space widens. D: A small amount of secretion is attached to the proximal centriole within the wide IF. Note the elongated proximal centriole, which is arranged rectangular to the distal centriole. E: Distinct electron-dense lamellae are arranged around the base of the Ax (arrows)." figureDoi="http://doi.org/10.5281/zenodo.4612307" httpUri="https://zenodo.org/record/4612307/files/figure.png" pageId="14" pageNumber="15">fig. 12E</figureCitation>
|
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). At the end of spermiogenesis late spermatids that remained connected via cellular bridges start to fuse, finally resulting in synspermia.
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</paragraph>
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</subSubSection>
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</treatment>
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||
</document> |