Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen

Autores
Novillo Estofan, Julio Manuel; Elisio, Mariano; Moreira, María Eugenia; Macchi, Gustavo Javier; Barrera Oro, Esteban
Año de publicación
2020
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
The knowledge of reproductive biology in notothenioids arises exclusively frommacroscopic and histologic descriptions, without the complement of hormonal analysis.Our study provides for first time in Lepidonotothen nudifrons adult females, informationon oocyte growth and change in testosterone and estradiol plasma levels throughout theovarian growth. Sampling included near 100 specimens caught at Potter Cove (PC), SouthShetland Islands (SSI), from November to late March of 2016-2018. Histological analysisconfirmed the macroscopic characteristic of two distinct cohorts of oocytes: one leadingclutch (Lc) of large orange vitellogenic oocytes, to be spawned in the upcomingreproductive season, and a second clutch of smaller whitish previtellogenic oocytes. InMarch, females (n=17) attained gonado-somatic index of 13-20% (16.73±4.20), totalfecundity of 2196-4652 oocytes/female (3209±740) and Lc oocytes of 1.7-2.1 mm. The Lcoocytes growth was significantly associated with photoperiod, with no diameter variationuntil the summer solstice, when they began to grow linearly with an estimated rate of0.01 mm/day. Testosterone and estradiol increased together with the oocyte growingthroughout the analyzed seasons, with a higher rise rate during March. The significantplasma level increase of both sex steroids observed in March and the reproductive effort data suggest that: (1) specimens were at a late vitellogenesis stage just prior to theoocyte final maturation in March, and thus L. nudifrons spawning period might onsetfrom this month at SSI; (2) PC is likely a spawning site for L. nudifrons, which reinforce thehypothesis that nearshore areas are spawning grounds for some notothenioids.
Fil: Novillo Estofan, Julio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Elisio, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; Argentina
Fil: Moreira, María Eugenia. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina
Fil: Macchi, Gustavo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; Argentina
Fil: Barrera Oro, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
XXXIV Scientific Committee on Antartic Research (SCAR)
Hobart
Australia
SCAR
Astronomy and geo-space observations from Antarctica
Materia
REPRODUCTION
HORMONAL ANALYSIS
ANTARCTIC
NOTOTHENIOIDS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/214816
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/214816
network_acronym_str CONICETDig
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network_name_str CONICET Digital (CONICET)
spelling Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in LepidonotothenNovillo Estofan, Julio ManuelElisio, MarianoMoreira, María EugeniaMacchi, Gustavo JavierBarrera Oro, EstebanREPRODUCTIONHORMONAL ANALYSISANTARCTICNOTOTHENIOIDShttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The knowledge of reproductive biology in notothenioids arises exclusively frommacroscopic and histologic descriptions, without the complement of hormonal analysis.Our study provides for first time in Lepidonotothen nudifrons adult females, informationon oocyte growth and change in testosterone and estradiol plasma levels throughout theovarian growth. Sampling included near 100 specimens caught at Potter Cove (PC), SouthShetland Islands (SSI), from November to late March of 2016-2018. Histological analysisconfirmed the macroscopic characteristic of two distinct cohorts of oocytes: one leadingclutch (Lc) of large orange vitellogenic oocytes, to be spawned in the upcomingreproductive season, and a second clutch of smaller whitish previtellogenic oocytes. InMarch, females (n=17) attained gonado-somatic index of 13-20% (16.73±4.20), totalfecundity of 2196-4652 oocytes/female (3209±740) and Lc oocytes of 1.7-2.1 mm. The Lcoocytes growth was significantly associated with photoperiod, with no diameter variationuntil the summer solstice, when they began to grow linearly with an estimated rate of0.01 mm/day. Testosterone and estradiol increased together with the oocyte growingthroughout the analyzed seasons, with a higher rise rate during March. The significantplasma level increase of both sex steroids observed in March and the reproductive effort data suggest that: (1) specimens were at a late vitellogenesis stage just prior to theoocyte final maturation in March, and thus L. nudifrons spawning period might onsetfrom this month at SSI; (2) PC is likely a spawning site for L. nudifrons, which reinforce thehypothesis that nearshore areas are spawning grounds for some notothenioids.Fil: Novillo Estofan, Julio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Elisio, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; ArgentinaFil: Moreira, María Eugenia. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires; ArgentinaFil: Macchi, Gustavo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; ArgentinaFil: Barrera Oro, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaXXXIV Scientific Committee on Antartic Research (SCAR)HobartAustraliaSCARAstronomy and geo-space observations from AntarcticaScientific Committee on Antartic Research2020info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/214816Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen; XXXIV Scientific Committee on Antartic Research (SCAR); Hobart; Australia; 2020; 120-120978-0-948277-59-7CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://app.ingemmet.gob.pe/biblioteca/pdf/SCAR-2020-1645.pdfInternacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:11:28Zoai:ri.conicet.gov.ar:11336/214816instacron: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:34982025-09-10 13:11:28.443CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen
title Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen
spellingShingle Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen
Novillo Estofan, Julio Manuel
REPRODUCTION
HORMONAL ANALYSIS
ANTARCTIC
NOTOTHENIOIDS
title_short Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen
title_full Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen
title_fullStr Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen
title_full_unstemmed Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen
title_sort Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen
dc.creator.none.fl_str_mv Novillo Estofan, Julio Manuel
Elisio, Mariano
Moreira, María Eugenia
Macchi, Gustavo Javier
Barrera Oro, Esteban
author Novillo Estofan, Julio Manuel
author_facet Novillo Estofan, Julio Manuel
Elisio, Mariano
Moreira, María Eugenia
Macchi, Gustavo Javier
Barrera Oro, Esteban
author_role author
author2 Elisio, Mariano
Moreira, María Eugenia
Macchi, Gustavo Javier
Barrera Oro, Esteban
author2_role author
author
author
author
dc.subject.none.fl_str_mv REPRODUCTION
HORMONAL ANALYSIS
ANTARCTIC
NOTOTHENIOIDS
topic REPRODUCTION
HORMONAL ANALYSIS
ANTARCTIC
NOTOTHENIOIDS
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 knowledge of reproductive biology in notothenioids arises exclusively frommacroscopic and histologic descriptions, without the complement of hormonal analysis.Our study provides for first time in Lepidonotothen nudifrons adult females, informationon oocyte growth and change in testosterone and estradiol plasma levels throughout theovarian growth. Sampling included near 100 specimens caught at Potter Cove (PC), SouthShetland Islands (SSI), from November to late March of 2016-2018. Histological analysisconfirmed the macroscopic characteristic of two distinct cohorts of oocytes: one leadingclutch (Lc) of large orange vitellogenic oocytes, to be spawned in the upcomingreproductive season, and a second clutch of smaller whitish previtellogenic oocytes. InMarch, females (n=17) attained gonado-somatic index of 13-20% (16.73±4.20), totalfecundity of 2196-4652 oocytes/female (3209±740) and Lc oocytes of 1.7-2.1 mm. The Lcoocytes growth was significantly associated with photoperiod, with no diameter variationuntil the summer solstice, when they began to grow linearly with an estimated rate of0.01 mm/day. Testosterone and estradiol increased together with the oocyte growingthroughout the analyzed seasons, with a higher rise rate during March. The significantplasma level increase of both sex steroids observed in March and the reproductive effort data suggest that: (1) specimens were at a late vitellogenesis stage just prior to theoocyte final maturation in March, and thus L. nudifrons spawning period might onsetfrom this month at SSI; (2) PC is likely a spawning site for L. nudifrons, which reinforce thehypothesis that nearshore areas are spawning grounds for some notothenioids.
Fil: Novillo Estofan, Julio Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Elisio, Mariano. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; Argentina
Fil: Moreira, María Eugenia. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina. Universidad Nacional del Centro de la Provincia de Buenos Aires; Argentina
Fil: Macchi, Gustavo Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Mar del Plata. Instituto de Investigaciones Marinas y Costeras. Subsede Instituto Nacional de Investigación y Desarrollo Pesquero; Argentina
Fil: Barrera Oro, Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
XXXIV Scientific Committee on Antartic Research (SCAR)
Hobart
Australia
SCAR
Astronomy and geo-space observations from Antarctica
description The knowledge of reproductive biology in notothenioids arises exclusively frommacroscopic and histologic descriptions, without the complement of hormonal analysis.Our study provides for first time in Lepidonotothen nudifrons adult females, informationon oocyte growth and change in testosterone and estradiol plasma levels throughout theovarian growth. Sampling included near 100 specimens caught at Potter Cove (PC), SouthShetland Islands (SSI), from November to late March of 2016-2018. Histological analysisconfirmed the macroscopic characteristic of two distinct cohorts of oocytes: one leadingclutch (Lc) of large orange vitellogenic oocytes, to be spawned in the upcomingreproductive season, and a second clutch of smaller whitish previtellogenic oocytes. InMarch, females (n=17) attained gonado-somatic index of 13-20% (16.73±4.20), totalfecundity of 2196-4652 oocytes/female (3209±740) and Lc oocytes of 1.7-2.1 mm. The Lcoocytes growth was significantly associated with photoperiod, with no diameter variationuntil the summer solstice, when they began to grow linearly with an estimated rate of0.01 mm/day. Testosterone and estradiol increased together with the oocyte growingthroughout the analyzed seasons, with a higher rise rate during March. The significantplasma level increase of both sex steroids observed in March and the reproductive effort data suggest that: (1) specimens were at a late vitellogenesis stage just prior to theoocyte final maturation in March, and thus L. nudifrons spawning period might onsetfrom this month at SSI; (2) PC is likely a spawning site for L. nudifrons, which reinforce thehypothesis that nearshore areas are spawning grounds for some notothenioids.
publishDate 2020
dc.date.none.fl_str_mv 2020
dc.type.none.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/conferenceObject
Congreso
Book
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
status_str publishedVersion
format conferenceObject
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/214816
Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen; XXXIV Scientific Committee on Antartic Research (SCAR); Hobart; Australia; 2020; 120-120
978-0-948277-59-7
CONICET Digital
CONICET
url http://hdl.handle.net/11336/214816
identifier_str_mv Hormonal analysis provides new insights on reproductive features in Antarctic notothenioids: a trial in Lepidonotothen; XXXIV Scientific Committee on Antartic Research (SCAR); Hobart; Australia; 2020; 120-120
978-0-948277-59-7
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://app.ingemmet.gob.pe/biblioteca/pdf/SCAR-2020-1645.pdf
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Scientific Committee on Antartic Research
publisher.none.fl_str_mv Scientific Committee on Antartic Research
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
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