Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer
The limpet Nacella concinna is one of the most widely distributed gastropods along the Antarctic Peninsula. This species has been a useful tool in ecological and physiological studies for understanding Antarctic trophic interactions. Although the reproduction of limpets has been thoroughly studied,...
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ftconicet:oai:ri.conicet.gov.ar:11336/182754 2023-10-09T21:47:09+02:00 Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer Dopchiz, Laura Patricia Ansaldo, Martin Genovese, Griselda application/pdf http://hdl.handle.net/11336/182754 eng eng Springer info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00300-018-2314-5 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2314-5 http://hdl.handle.net/11336/182754 Dopchiz, Laura Patricia; Ansaldo, Martin; Genovese, Griselda; Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer; Springer; Polar Biology; 41; 9; 3-2018; 1751-1762 0722-4060 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ GAMETOGENESIS INTERNAL FERTILIZATION MEIOSIS NACELLA CONCINNA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1007/s00300-018-2314-5 2023-09-24T19:04:08Z The limpet Nacella concinna is one of the most widely distributed gastropods along the Antarctic Peninsula. This species has been a useful tool in ecological and physiological studies for understanding Antarctic trophic interactions. Although the reproduction of limpets has been thoroughly studied, very little is known about gametogenesis in the genus Nacella. The purpose of this study is to describe the gonadal morphology and gametogenesis in N. concinna observed by light microscopy and to determine its chromosome complement. All the limpets were sexually mature at the time of sampling. Oocytes were separated by trabeculae with abundant glycogen reserves. There was a predominance of late vitellogenic oocytes. Many previtellogenic oocytes were pyriform in shape. Oogonia were clustered near the ovary wall or the trabeculae. Only two meiotic stages were found: metaphase I and anaphase I, both of which showed a regular arrangement of chromosomes. The oviduct contained mature oocytes surrounded by sperm. Testicular tubules were filled with spermatozoa. The elongated head of the spermatozoon resembles that of other Nacellidae members. One of the bivalents is heteropycnotic. The haploid complement is n = 4 and the sex determination system is XO/XX. Although N. concinna has been commonly characterized as a broadcast-spawner, its unique spawning behavior, the presence of oocytes at anaphase I and spermatozoa within the oviduct suggests internal fertilization. Fil: Dopchiz, Laura Patricia. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Fil: Ansaldo, Martin. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Fil: Genovese, Griselda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Dirección Nacional del Antártico Instituto Antártico Argentino King George Island Polar Biology CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) 25 de Mayo ENVELOPE(-58.000,-58.000,-62.083,-62.083) Antarctic Antarctic Peninsula Argentina Argentino Austral King George Island Nacella ENVELOPE(-60.783,-60.783,-62.467,-62.467) Potter Cove The Antarctic Polar Biology 41 9 1751 1762 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
GAMETOGENESIS INTERNAL FERTILIZATION MEIOSIS NACELLA CONCINNA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
spellingShingle |
GAMETOGENESIS INTERNAL FERTILIZATION MEIOSIS NACELLA CONCINNA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 Dopchiz, Laura Patricia Ansaldo, Martin Genovese, Griselda Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer |
topic_facet |
GAMETOGENESIS INTERNAL FERTILIZATION MEIOSIS NACELLA CONCINNA https://purl.org/becyt/ford/1.6 https://purl.org/becyt/ford/1 |
description |
The limpet Nacella concinna is one of the most widely distributed gastropods along the Antarctic Peninsula. This species has been a useful tool in ecological and physiological studies for understanding Antarctic trophic interactions. Although the reproduction of limpets has been thoroughly studied, very little is known about gametogenesis in the genus Nacella. The purpose of this study is to describe the gonadal morphology and gametogenesis in N. concinna observed by light microscopy and to determine its chromosome complement. All the limpets were sexually mature at the time of sampling. Oocytes were separated by trabeculae with abundant glycogen reserves. There was a predominance of late vitellogenic oocytes. Many previtellogenic oocytes were pyriform in shape. Oogonia were clustered near the ovary wall or the trabeculae. Only two meiotic stages were found: metaphase I and anaphase I, both of which showed a regular arrangement of chromosomes. The oviduct contained mature oocytes surrounded by sperm. Testicular tubules were filled with spermatozoa. The elongated head of the spermatozoon resembles that of other Nacellidae members. One of the bivalents is heteropycnotic. The haploid complement is n = 4 and the sex determination system is XO/XX. Although N. concinna has been commonly characterized as a broadcast-spawner, its unique spawning behavior, the presence of oocytes at anaphase I and spermatozoa within the oviduct suggests internal fertilization. Fil: Dopchiz, Laura Patricia. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Fil: Ansaldo, Martin. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina Fil: Genovese, Griselda. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Biodiversidad y Biología Experimental y Aplicada. Universidad de Buenos Aires. ... |
format |
Article in Journal/Newspaper |
author |
Dopchiz, Laura Patricia Ansaldo, Martin Genovese, Griselda |
author_facet |
Dopchiz, Laura Patricia Ansaldo, Martin Genovese, Griselda |
author_sort |
Dopchiz, Laura Patricia |
title |
Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer |
title_short |
Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer |
title_full |
Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer |
title_fullStr |
Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer |
title_full_unstemmed |
Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer |
title_sort |
gonadal histology and gametogenesis of the antarctic limpet nacella concinna (patellogastropoda, nacellidae) collected at potter cove, 25 de mayo (king george) island, during austral summer |
publisher |
Springer |
url |
http://hdl.handle.net/11336/182754 |
long_lat |
ENVELOPE(-58.000,-58.000,-62.083,-62.083) ENVELOPE(-60.783,-60.783,-62.467,-62.467) |
geographic |
25 de Mayo Antarctic Antarctic Peninsula Argentina Argentino Austral King George Island Nacella Potter Cove The Antarctic |
geographic_facet |
25 de Mayo Antarctic Antarctic Peninsula Argentina Argentino Austral King George Island Nacella Potter Cove The Antarctic |
genre |
Antarc* Antarctic Antarctic Peninsula Dirección Nacional del Antártico Instituto Antártico Argentino King George Island Polar Biology |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Dirección Nacional del Antártico Instituto Antártico Argentino King George Island Polar Biology |
op_relation |
info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00300-018-2314-5 info:eu-repo/semantics/altIdentifier/doi/10.1007/s00300-018-2314-5 http://hdl.handle.net/11336/182754 Dopchiz, Laura Patricia; Ansaldo, Martin; Genovese, Griselda; Gonadal histology and gametogenesis of the Antarctic limpet Nacella concinna (Patellogastropoda, Nacellidae) collected at Potter Cove, 25 de Mayo (King George) Island, during austral summer; Springer; Polar Biology; 41; 9; 3-2018; 1751-1762 0722-4060 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
op_doi |
https://doi.org/10.1007/s00300-018-2314-5 |
container_title |
Polar Biology |
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41 |
container_issue |
9 |
container_start_page |
1751 |
op_container_end_page |
1762 |
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1779309961575137280 |