A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands

Autores
Martínez Novillo, Manuel; Moreira, Eugenia; Elisio, Mariano; Macchi, Gustavo Javier; Barrera Oro, Esteban; la Mesa, Mario
Año de publicación
2024
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Understanding the life history traits of Antarctic fish species is crucial for effective management and conservation efforts purposes. This study provides a comprehensive evaluation of the reproductive dynamics and age-growth characteristics in Trematomus newnesi, a common notothenioid species in the High-Antarctic zone. Field observations conducted in Potter Cove, South Shetland Islands, revealed significant variations in photoperiod and water temperature from November to March, with water temperatures reaching a peak in mid-December. Gonadal morphology showed an exponential increase in gonadosomatic index in females and males from November to March, indicating ovarian and testicular development. Sex steroid plasma levels, particularly testosterone (T) and estradiol (E2), showed significant variations, with elevated levels observed during late vitellogenesis, suggesting the proximity of final maturation and spawning. Age estimation through otolith readings provided a range of ages up to five years old for both sexes. Comparison with previous studies on T. newnesi from other Antarctic areas highlighted similarities and differences in reproductive patterns and growth parameters, respectively. Our study suggests that temperature fluctuations, in conjunction with photoperiod, may act as triggers for reproductive events in T. newnesi starting in early autumn at Potter Cove. The environmental cues and reproductive data indicate that Potter Cove might serve as a spawning ground for T. newnesi. Likewise, larval hatching was estimated to occur from early to mid-August, suggesting an egg incubation period of four months. Overall, this study provides insights into the reproductive dynamics and life history traits of T. newnesi, as a valuable contribution for appropriate management and conservation of Antarctic fish populations.
Fil: Martínez Novillo, Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina
Fil: Moreira, Eugenia. 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: 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
Fil: la Mesa, Mario. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia
XI Open Science Conferences
Punta Arenas
Chile
Scientific Committee on Antarctic Research
Materia
Growth
Reproduction
Sex steroids
Environmental cues
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:11336/264447
Acceder
id CONICETDig_01bba484d6602cd0549101b9072d1d47
oai_identifier_str oai:ri.conicet.gov.ar:11336/264447
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland IslandsMartínez Novillo, ManuelMoreira, EugeniaElisio, MarianoMacchi, Gustavo JavierBarrera Oro, Estebanla Mesa, MarioGrowthReproductionSex steroidsEnvironmental cueshttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Understanding the life history traits of Antarctic fish species is crucial for effective management and conservation efforts purposes. This study provides a comprehensive evaluation of the reproductive dynamics and age-growth characteristics in Trematomus newnesi, a common notothenioid species in the High-Antarctic zone. Field observations conducted in Potter Cove, South Shetland Islands, revealed significant variations in photoperiod and water temperature from November to March, with water temperatures reaching a peak in mid-December. Gonadal morphology showed an exponential increase in gonadosomatic index in females and males from November to March, indicating ovarian and testicular development. Sex steroid plasma levels, particularly testosterone (T) and estradiol (E2), showed significant variations, with elevated levels observed during late vitellogenesis, suggesting the proximity of final maturation and spawning. Age estimation through otolith readings provided a range of ages up to five years old for both sexes. Comparison with previous studies on T. newnesi from other Antarctic areas highlighted similarities and differences in reproductive patterns and growth parameters, respectively. Our study suggests that temperature fluctuations, in conjunction with photoperiod, may act as triggers for reproductive events in T. newnesi starting in early autumn at Potter Cove. The environmental cues and reproductive data indicate that Potter Cove might serve as a spawning ground for T. newnesi. Likewise, larval hatching was estimated to occur from early to mid-August, suggesting an egg incubation period of four months. Overall, this study provides insights into the reproductive dynamics and life history traits of T. newnesi, as a valuable contribution for appropriate management and conservation of Antarctic fish populations.Fil: Martínez Novillo, Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; ArgentinaFil: Moreira, Eugenia. 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: 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"; ArgentinaFil: la Mesa, Mario. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; ItaliaXI Open Science ConferencesPunta ArenasChileScientific Committee on Antarctic ResearchScientific Committee on Antarctic Research2024info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectCongresoBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/vnd.openxmlformats-officedocument.wordprocessingml.documentapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/264447A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands; XI Open Science Conferences; Punta Arenas; Chile; 2024; 527-527978-0-948277-69-6CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.scar2024.org/wp-content/uploads/2024/08/Abstract-book-16_08.htmlinfo:eu-repo/semantics/altIdentifier/url/https://scar.org/events/osc/pucon-2024#bookinfo:eu-repo/semantics/altIdentifier/url/https://scar.org/~documents/route%3A/download/6303Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:40:34Zoai:ri.conicet.gov.ar:11336/264447instacron: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:34982025-10-22 11:40:34.962CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands
title A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands
spellingShingle A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands
Martínez Novillo, Manuel
Growth
Reproduction
Sex steroids
Environmental cues
title_short A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands
title_full A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands
title_fullStr A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands
title_full_unstemmed A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands
title_sort A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands
dc.creator.none.fl_str_mv Martínez Novillo, Manuel
Moreira, Eugenia
Elisio, Mariano
Macchi, Gustavo Javier
Barrera Oro, Esteban
la Mesa, Mario
author Martínez Novillo, Manuel
author_facet Martínez Novillo, Manuel
Moreira, Eugenia
Elisio, Mariano
Macchi, Gustavo Javier
Barrera Oro, Esteban
la Mesa, Mario
author_role author
author2 Moreira, Eugenia
Elisio, Mariano
Macchi, Gustavo Javier
Barrera Oro, Esteban
la Mesa, Mario
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv Growth
Reproduction
Sex steroids
Environmental cues
topic Growth
Reproduction
Sex steroids
Environmental cues
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Understanding the life history traits of Antarctic fish species is crucial for effective management and conservation efforts purposes. This study provides a comprehensive evaluation of the reproductive dynamics and age-growth characteristics in Trematomus newnesi, a common notothenioid species in the High-Antarctic zone. Field observations conducted in Potter Cove, South Shetland Islands, revealed significant variations in photoperiod and water temperature from November to March, with water temperatures reaching a peak in mid-December. Gonadal morphology showed an exponential increase in gonadosomatic index in females and males from November to March, indicating ovarian and testicular development. Sex steroid plasma levels, particularly testosterone (T) and estradiol (E2), showed significant variations, with elevated levels observed during late vitellogenesis, suggesting the proximity of final maturation and spawning. Age estimation through otolith readings provided a range of ages up to five years old for both sexes. Comparison with previous studies on T. newnesi from other Antarctic areas highlighted similarities and differences in reproductive patterns and growth parameters, respectively. Our study suggests that temperature fluctuations, in conjunction with photoperiod, may act as triggers for reproductive events in T. newnesi starting in early autumn at Potter Cove. The environmental cues and reproductive data indicate that Potter Cove might serve as a spawning ground for T. newnesi. Likewise, larval hatching was estimated to occur from early to mid-August, suggesting an egg incubation period of four months. Overall, this study provides insights into the reproductive dynamics and life history traits of T. newnesi, as a valuable contribution for appropriate management and conservation of Antarctic fish populations.
Fil: Martínez Novillo, Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Diversidad y Ecología Animal. Universidad Nacional de Córdoba. Facultad de Ciencias Exactas Físicas y Naturales. Instituto de Diversidad y Ecología Animal; Argentina
Fil: Moreira, Eugenia. 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: 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
Fil: la Mesa, Mario. Consiglio Nazionale Delle Ricerche. Istituto Di Scienze Polari.; Italia
XI Open Science Conferences
Punta Arenas
Chile
Scientific Committee on Antarctic Research
description Understanding the life history traits of Antarctic fish species is crucial for effective management and conservation efforts purposes. This study provides a comprehensive evaluation of the reproductive dynamics and age-growth characteristics in Trematomus newnesi, a common notothenioid species in the High-Antarctic zone. Field observations conducted in Potter Cove, South Shetland Islands, revealed significant variations in photoperiod and water temperature from November to March, with water temperatures reaching a peak in mid-December. Gonadal morphology showed an exponential increase in gonadosomatic index in females and males from November to March, indicating ovarian and testicular development. Sex steroid plasma levels, particularly testosterone (T) and estradiol (E2), showed significant variations, with elevated levels observed during late vitellogenesis, suggesting the proximity of final maturation and spawning. Age estimation through otolith readings provided a range of ages up to five years old for both sexes. Comparison with previous studies on T. newnesi from other Antarctic areas highlighted similarities and differences in reproductive patterns and growth parameters, respectively. Our study suggests that temperature fluctuations, in conjunction with photoperiod, may act as triggers for reproductive events in T. newnesi starting in early autumn at Potter Cove. The environmental cues and reproductive data indicate that Potter Cove might serve as a spawning ground for T. newnesi. Likewise, larval hatching was estimated to occur from early to mid-August, suggesting an egg incubation period of four months. Overall, this study provides insights into the reproductive dynamics and life history traits of T. newnesi, as a valuable contribution for appropriate management and conservation of Antarctic fish populations.
publishDate 2024
dc.date.none.fl_str_mv 2024
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/11336/264447
A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands; XI Open Science Conferences; Punta Arenas; Chile; 2024; 527-527
978-0-948277-69-6
CONICET Digital
CONICET
url http://hdl.handle.net/11336/264447
identifier_str_mv A comprehensive study of the life history traits of Trematomus newnesi (Pisces, Notothenioidei) from the South Shetland Islands; XI Open Science Conferences; Punta Arenas; Chile; 2024; 527-527
978-0-948277-69-6
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://www.scar2024.org/wp-content/uploads/2024/08/Abstract-book-16_08.html
info:eu-repo/semantics/altIdentifier/url/https://scar.org/events/osc/pucon-2024#book
info:eu-repo/semantics/altIdentifier/url/https://scar.org/~documents/route%3A/download/6303
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
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rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/vnd.openxmlformats-officedocument.wordprocessingml.document
application/pdf
application/pdf
dc.coverage.none.fl_str_mv Internacional
dc.publisher.none.fl_str_mv Scientific Committee on Antarctic Research
publisher.none.fl_str_mv Scientific Committee on Antarctic Research
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
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reponame_str CONICET Digital (CONICET)
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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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