Female reproductive tract of the lesser anteater (Tamandua tetradactyla, myrmecophagidae, Xenarthra). Anatomy and histology
Identifieur interne : 004802 ( Main/Exploration ); précédent : 004801; suivant : 004803Female reproductive tract of the lesser anteater (Tamandua tetradactyla, myrmecophagidae, Xenarthra). Anatomy and histology
Auteurs : L. F. Rossi [Argentine] ; J. P. Luaces [Argentine] ; H. J. Aldana Marcos [Argentine] ; P. D. Cetica [Argentine] ; G. Gachen [Argentine] ; G. Pérez Jimeno [Argentine] ; M. S. Merani [Argentine]Source :
- Journal of Morphology [ 0362-2525 ] ; 2011-11.
Descripteurs français
- Wicri :
- geographic : Argentine.
English descriptors
- KwdEn :
- Aire, Anteater, Argentina, Armadillo, Arrowhead, Arrowhead marks, Buenos, Buenos aires, Canal, Cetica, Columnar, Dasypus, Dasypus novemcinctus, Epithelium, Family myrmecophagidae, Follicle, Genital, Genital tract, Genus dasypus, Giant anteater, Histological, Lesser anteater, Morphology, Myrmecophaga tridactyla, Myrmecophagidae, Ovarian cortex, Ovary, Reproductive, Scale bars, Simple columnar epithelium, Single oocyte, Sinus, Tamandua, Tamandua tetradactyla, Tetradactyla, Transitional epithelium, Urogenital, Urogenital sinus, Uterovaginal, Uterovaginal canal, Uterus, Xenarthra.
- Teeft :
- Aire, Anteater, Argentina, Armadillo, Arrowhead, Arrowhead marks, Buenos, Buenos aires, Canal, Cetica, Columnar, Dasypus, Dasypus novemcinctus, Epithelium, Family myrmecophagidae, Follicle, Genital, Genital tract, Genus dasypus, Giant anteater, Histological, Lesser anteater, Morphology, Myrmecophaga tridactyla, Myrmecophagidae, Ovarian cortex, Ovary, Reproductive, Scale bars, Simple columnar epithelium, Single oocyte, Sinus, Tamandua, Tamandua tetradactyla, Tetradactyla, Transitional epithelium, Urogenital, Urogenital sinus, Uterovaginal, Uterovaginal canal, Uterus, Xenarthra.
Abstract
The morphological and histological features of the unusual reproductive tract of the female lesser anteater, Tamandua tetradactyla (Myrmecophagidae, Xenarthra), are described for the first time. The present study aimed to establish the main similarities and differences between this species and other xenarthrans. The populations of this species are declining rapidly for a number of reasons and our study is relevant to diverse programs related to its conservation. Studies were carried out on five female genital tracts of adult specimens. Ovaries were ovoid, presenting a medulla completely surrounded by the cortex, differently from that described in other xenarthans. Like in Dasypus but different from all other armadillos studied, single oocyte follicles were observed and a simple the uterus. The uterovaginal canal connects the uterus with the urogenital sinus. The simple columnar epithelium of the uterovaginal canal ends abruptly at a septum which resembles a hymen, where the transitional epithelium of the urogenital sinus appears. This ancestral feature is shared with that of other armadillos, except Tolypeutes matacus, which has a true vagina. Characteristics of the reproductive tract and sperm morphology of other Xenarthra are comparatively discussed. These observations suggest that important reproductive features are shared between the family Myrmecophagidae and the genus Dasypus, a basal group in the phylogeny of Xenarthra. J. Morphol. 2011. © 2011 Wiley‐Liss, Inc.
Url:
DOI: 10.1002/jmor.10983
Affiliations:
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Luaces</name><affiliation wicri:level="1"><country xml:lang="fr">Argentine</country><wicri:regionArea>Laboratorio de Biología Cromosómica, Instituto de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, 10°P, C1121ABG, Buenos Aires</wicri:regionArea><wicri:noRegion>Buenos Aires</wicri:noRegion></affiliation></author><author><name sortKey="Marcos, H J Aldana" sort="Marcos, H J Aldana" uniqKey="Marcos H" first="H. J. Aldana" last="Marcos">H. J. Aldana Marcos</name><affiliation wicri:level="1"><country xml:lang="fr">Argentine</country><wicri:regionArea>Laboratorio de Histología, Facultad de Ciencias Exactas y Naturales, Universidad de Belgrano, Villanueva 1324, C1426DQG, Buenos Aires</wicri:regionArea><wicri:noRegion>Buenos Aires</wicri:noRegion></affiliation></author><author><name sortKey="Cetica, P D" sort="Cetica, P D" uniqKey="Cetica P" first="P. D." last="Cetica">P. D. Cetica</name><affiliation wicri:level="1"><country xml:lang="fr">Argentine</country><wicri:regionArea>Cátedra de Química Biológica, Instituto de Investigación y Tecnología en Reproducción Animal, Facultad de Ciencias Veterinarias, Universidad de Buenos Aires, Chorroarín 280, C1427CWO, Buenos Aires</wicri:regionArea><wicri:noRegion>Buenos Aires</wicri:noRegion></affiliation></author><author><name sortKey="Gachen, G" sort="Gachen, G" uniqKey="Gachen G" first="G." last="Gachen">G. Gachen</name><affiliation wicri:level="1"><country xml:lang="fr">Argentine</country><wicri:regionArea>Fundación Temaiken, Ruta Provincial 25 Km, 0.700, 1625, Escobar, Buenos Aires</wicri:regionArea><wicri:noRegion>Buenos Aires</wicri:noRegion></affiliation></author><author><name sortKey="Jimeno, G Perez" sort="Jimeno, G Perez" uniqKey="Jimeno G" first="G. Pérez" last="Jimeno">G. Pérez Jimeno</name><affiliation wicri:level="1"><country xml:lang="fr">Argentine</country><wicri:regionArea>Proyecto de Conservación Oso Hormiguero Gigante, Zoo Florencio Varela, Argentina ‐ Artis Royal Zoo, Holanda. Avenida Pte. Perón 800, 1888, Florencio Varela, Buenos Aires</wicri:regionArea><wicri:noRegion>Buenos Aires</wicri:noRegion></affiliation></author><author><name sortKey="Merani, M S" sort="Merani, M S" uniqKey="Merani M" first="M. S." last="Merani">M. S. Merani</name><affiliation wicri:level="1"><country xml:lang="fr">Argentine</country><wicri:regionArea>Laboratorio de Biología Cromosómica, Instituto de Investigaciones en Reproducción, Facultad de Medicina, Universidad de Buenos Aires, Paraguay 2155, 10°P, C1121ABG, Buenos Aires</wicri:regionArea><wicri:noRegion>Buenos Aires</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">Argentine</country></affiliation><affiliation wicri:level="1"><country xml:lang="fr">Argentine</country><wicri:regionArea>Correspondence address: Laboratorio de Biología Cromosómica, Instituto de Investigaciones en Reproducción, Universidad de Buenos Aires, Paraguay 2155 10°P Lab 6, C1121ABG, Ciudad de Buenos Aires</wicri:regionArea><wicri:noRegion>Ciudad de Buenos Aires</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Journal of Morphology</title><title level="j" type="alt">JOURNAL OF MORPHOLOGY</title><idno type="ISSN">0362-2525</idno><idno type="eISSN">1097-4687</idno><imprint><biblScope unit="vol">272</biblScope><biblScope unit="issue">11</biblScope><biblScope unit="page" from="1307">1307</biblScope><biblScope unit="page" to="1313">1313</biblScope><biblScope unit="page-count">7</biblScope><publisher>Wiley Subscription Services, Inc., A Wiley Company</publisher><pubPlace>Hoboken</pubPlace><date type="published" when="2011-11">2011-11</date></imprint><idno type="ISSN">0362-2525</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0362-2525</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aire</term><term>Anteater</term><term>Argentina</term><term>Armadillo</term><term>Arrowhead</term><term>Arrowhead marks</term><term>Buenos</term><term>Buenos aires</term><term>Canal</term><term>Cetica</term><term>Columnar</term><term>Dasypus</term><term>Dasypus novemcinctus</term><term>Epithelium</term><term>Family myrmecophagidae</term><term>Follicle</term><term>Genital</term><term>Genital tract</term><term>Genus dasypus</term><term>Giant anteater</term><term>Histological</term><term>Lesser anteater</term><term>Morphology</term><term>Myrmecophaga tridactyla</term><term>Myrmecophagidae</term><term>Ovarian cortex</term><term>Ovary</term><term>Reproductive</term><term>Scale bars</term><term>Simple columnar epithelium</term><term>Single oocyte</term><term>Sinus</term><term>Tamandua</term><term>Tamandua tetradactyla</term><term>Tetradactyla</term><term>Transitional epithelium</term><term>Urogenital</term><term>Urogenital sinus</term><term>Uterovaginal</term><term>Uterovaginal canal</term><term>Uterus</term><term>Xenarthra</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Aire</term><term>Anteater</term><term>Argentina</term><term>Armadillo</term><term>Arrowhead</term><term>Arrowhead marks</term><term>Buenos</term><term>Buenos aires</term><term>Canal</term><term>Cetica</term><term>Columnar</term><term>Dasypus</term><term>Dasypus novemcinctus</term><term>Epithelium</term><term>Family myrmecophagidae</term><term>Follicle</term><term>Genital</term><term>Genital tract</term><term>Genus dasypus</term><term>Giant anteater</term><term>Histological</term><term>Lesser anteater</term><term>Morphology</term><term>Myrmecophaga tridactyla</term><term>Myrmecophagidae</term><term>Ovarian cortex</term><term>Ovary</term><term>Reproductive</term><term>Scale bars</term><term>Simple columnar epithelium</term><term>Single oocyte</term><term>Sinus</term><term>Tamandua</term><term>Tamandua tetradactyla</term><term>Tetradactyla</term><term>Transitional epithelium</term><term>Urogenital</term><term>Urogenital sinus</term><term>Uterovaginal</term><term>Uterovaginal canal</term><term>Uterus</term><term>Xenarthra</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Argentine</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">The morphological and histological features of the unusual reproductive tract of the female lesser anteater, Tamandua tetradactyla (Myrmecophagidae, Xenarthra), are described for the first time. The present study aimed to establish the main similarities and differences between this species and other xenarthrans. The populations of this species are declining rapidly for a number of reasons and our study is relevant to diverse programs related to its conservation. Studies were carried out on five female genital tracts of adult specimens. Ovaries were ovoid, presenting a medulla completely surrounded by the cortex, differently from that described in other xenarthans. Like in Dasypus but different from all other armadillos studied, single oocyte follicles were observed and a simple the uterus. The uterovaginal canal connects the uterus with the urogenital sinus. The simple columnar epithelium of the uterovaginal canal ends abruptly at a septum which resembles a hymen, where the transitional epithelium of the urogenital sinus appears. This ancestral feature is shared with that of other armadillos, except Tolypeutes matacus, which has a true vagina. Characteristics of the reproductive tract and sperm morphology of other Xenarthra are comparatively discussed. These observations suggest that important reproductive features are shared between the family Myrmecophagidae and the genus Dasypus, a basal group in the phylogeny of Xenarthra. J. Morphol. 2011. © 2011 Wiley‐Liss, Inc.</div></front></TEI><affiliations><list><country><li>Argentine</li></country></list><tree><country name="Argentine"><noRegion><name sortKey="Rossi, L F" sort="Rossi, L F" uniqKey="Rossi L" first="L. F." last="Rossi">L. F. Rossi</name></noRegion><name sortKey="Cetica, P D" sort="Cetica, P D" uniqKey="Cetica P" first="P. D." last="Cetica">P. D. Cetica</name><name sortKey="Gachen, G" sort="Gachen, G" uniqKey="Gachen G" first="G." last="Gachen">G. Gachen</name><name sortKey="Jimeno, G Perez" sort="Jimeno, G Perez" uniqKey="Jimeno G" first="G. Pérez" last="Jimeno">G. Pérez Jimeno</name><name sortKey="Luaces, J P" sort="Luaces, J P" uniqKey="Luaces J" first="J. P." last="Luaces">J. P. Luaces</name><name sortKey="Marcos, H J Aldana" sort="Marcos, H J Aldana" uniqKey="Marcos H" first="H. J. Aldana" last="Marcos">H. J. Aldana Marcos</name><name sortKey="Merani, M S" sort="Merani, M S" uniqKey="Merani M" first="M. S." last="Merani">M. S. Merani</name><name sortKey="Merani, M S" sort="Merani, M S" uniqKey="Merani M" first="M. S." last="Merani">M. S. Merani</name><name sortKey="Merani, M S" sort="Merani, M S" uniqKey="Merani M" first="M. S." last="Merani">M. S. Merani</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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