Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)

Autores
Sahade, Ricardo Jose; Servetto, Natalia; Torre, Luciana
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The reproductive biology of the sea pen Malacobelemnon daytoni was studied at Potter Cove, South Shetland Islands, where it is one of the dominant species in shallow waters. Specimens collected at 1522 m depth were examined by histological analysis. M. daytoni is gonochoristic and exhibited a sex ratio of 1:1. Oocyte sizes (300 mm) and the absence of embryos or newly developed larvae in the colonies suggest that this species can have lecithotrophic larvae and experience external fertilization. This life strategy is in line with other members of the group and supports the hypothesis that this could be a phylogenetically fixed trait for pennatulids. It was observed that oocytes were
generated by gastrodermic tissue and released to the longitudinal canal. Thereafter, they migrate along the canal until they reach maturity and are released by autozooids at the top of the colonies. This striking feature has not yet been reported for other pennatulaceans. Mature oocytes were observed from colonies of 15 mm in length, suggesting that sexual maturity can be reached rapidly. This is contrary to what is hypothesized for the vast majority of Antarctic benthic invertebrates, namely that rates of activities associated with development, reproduction and growth are almost universally very slow. This strategy may also explain the ecological success of M. daytoni in areas with high ice impact as in the shallow waters of Potter Cove.
Fil: Sahade, Ricardo Jose. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; Argentina
Fil: Servetto, Natalia. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; Argentina
Fil: Torre, Luciana. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; Argentina
Materia
Antarctica
benthic community
Pennatulacea
reproduction
oogenesis
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/7954
Acceder
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repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)Sahade, Ricardo JoseServetto, NataliaTorre, LucianaAntarcticabenthic communityPennatulaceareproductionoogenesishttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The reproductive biology of the sea pen Malacobelemnon daytoni was studied at Potter Cove, South Shetland Islands, where it is one of the dominant species in shallow waters. Specimens collected at 1522 m depth were examined by histological analysis. M. daytoni is gonochoristic and exhibited a sex ratio of 1:1. Oocyte sizes (300 mm) and the absence of embryos or newly developed larvae in the colonies suggest that this species can have lecithotrophic larvae and experience external fertilization. This life strategy is in line with other members of the group and supports the hypothesis that this could be a phylogenetically fixed trait for pennatulids. It was observed that oocytes were<br />generated by gastrodermic tissue and released to the longitudinal canal. Thereafter, they migrate along the canal until they reach maturity and are released by autozooids at the top of the colonies. This striking feature has not yet been reported for other pennatulaceans. Mature oocytes were observed from colonies of 15 mm in length, suggesting that sexual maturity can be reached rapidly. This is contrary to what is hypothesized for the vast majority of Antarctic benthic invertebrates, namely that rates of activities associated with development, reproduction and growth are almost universally very slow. This strategy may also explain the ecological success of M. daytoni in areas with high ice impact as in the shallow waters of Potter Cove.Fil: Sahade, Ricardo Jose. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; ArgentinaFil: Servetto, Natalia. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; ArgentinaFil: Torre, Luciana. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; ArgentinaNorwegian Polar Institute2013-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/7954Sahade, Ricardo Jose; Servetto, Natalia; Torre, Luciana; Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae); Norwegian Polar Institute; Polar Research; 32; 7-2013; 1-111751-8369enginfo:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.3402/polar.v32i0.20040info:eu-repo/semantics/altIdentifier/url/http://www.polarresearch.net/index.php/polar/article/view/20040info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:15:33Zoai:ri.conicet.gov.ar:11336/7954instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:15:33.949CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)
title Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)
spellingShingle Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)
Sahade, Ricardo Jose
Antarctica
benthic community
Pennatulacea
reproduction
oogenesis
title_short Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)
title_full Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)
title_fullStr Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)
title_full_unstemmed Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)
title_sort Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae)
dc.creator.none.fl_str_mv Sahade, Ricardo Jose
Servetto, Natalia
Torre, Luciana
author Sahade, Ricardo Jose
author_facet Sahade, Ricardo Jose
Servetto, Natalia
Torre, Luciana
author_role author
author2 Servetto, Natalia
Torre, Luciana
author2_role author
author
dc.subject.none.fl_str_mv Antarctica
benthic community
Pennatulacea
reproduction
oogenesis
topic Antarctica
benthic community
Pennatulacea
reproduction
oogenesis
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The reproductive biology of the sea pen Malacobelemnon daytoni was studied at Potter Cove, South Shetland Islands, where it is one of the dominant species in shallow waters. Specimens collected at 1522 m depth were examined by histological analysis. M. daytoni is gonochoristic and exhibited a sex ratio of 1:1. Oocyte sizes (300 mm) and the absence of embryos or newly developed larvae in the colonies suggest that this species can have lecithotrophic larvae and experience external fertilization. This life strategy is in line with other members of the group and supports the hypothesis that this could be a phylogenetically fixed trait for pennatulids. It was observed that oocytes were<br />generated by gastrodermic tissue and released to the longitudinal canal. Thereafter, they migrate along the canal until they reach maturity and are released by autozooids at the top of the colonies. This striking feature has not yet been reported for other pennatulaceans. Mature oocytes were observed from colonies of 15 mm in length, suggesting that sexual maturity can be reached rapidly. This is contrary to what is hypothesized for the vast majority of Antarctic benthic invertebrates, namely that rates of activities associated with development, reproduction and growth are almost universally very slow. This strategy may also explain the ecological success of M. daytoni in areas with high ice impact as in the shallow waters of Potter Cove.
Fil: Sahade, Ricardo Jose. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; Argentina
Fil: Servetto, Natalia. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; Argentina
Fil: Torre, Luciana. Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Cordoba. Instituto de Diversidad y Ecologia Animal; Argentina
description The reproductive biology of the sea pen Malacobelemnon daytoni was studied at Potter Cove, South Shetland Islands, where it is one of the dominant species in shallow waters. Specimens collected at 1522 m depth were examined by histological analysis. M. daytoni is gonochoristic and exhibited a sex ratio of 1:1. Oocyte sizes (300 mm) and the absence of embryos or newly developed larvae in the colonies suggest that this species can have lecithotrophic larvae and experience external fertilization. This life strategy is in line with other members of the group and supports the hypothesis that this could be a phylogenetically fixed trait for pennatulids. It was observed that oocytes were<br />generated by gastrodermic tissue and released to the longitudinal canal. Thereafter, they migrate along the canal until they reach maturity and are released by autozooids at the top of the colonies. This striking feature has not yet been reported for other pennatulaceans. Mature oocytes were observed from colonies of 15 mm in length, suggesting that sexual maturity can be reached rapidly. This is contrary to what is hypothesized for the vast majority of Antarctic benthic invertebrates, namely that rates of activities associated with development, reproduction and growth are almost universally very slow. This strategy may also explain the ecological success of M. daytoni in areas with high ice impact as in the shallow waters of Potter Cove.
publishDate 2013
dc.date.none.fl_str_mv 2013-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/7954
Sahade, Ricardo Jose; Servetto, Natalia; Torre, Luciana; Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae); Norwegian Polar Institute; Polar Research; 32; 7-2013; 1-11
1751-8369
url http://hdl.handle.net/11336/7954
identifier_str_mv Sahade, Ricardo Jose; Servetto, Natalia; Torre, Luciana; Reproductive biology of the Antarctic "sea pen" Malacobelemnon daytoni (Octocoralia, Pennatulacea, Kophbelemnidae); Norwegian Polar Institute; Polar Research; 32; 7-2013; 1-11
1751-8369
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://dx.doi.org/10.3402/polar.v32i0.20040
info:eu-repo/semantics/altIdentifier/url/http://www.polarresearch.net/index.php/polar/article/view/20040
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Norwegian Polar Institute
publisher.none.fl_str_mv Norwegian Polar Institute
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614092316213248
score 13.070432

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