Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground

Autores
Diaz, Marina Vera; Pilar Olivar, M.; Macchi, Gustavo Javier
Año de publicación
2014
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Argentinean hake, Merluccius hubbsi, is one of the most important fishery resources of the South-western Atlantic Ocean, but its spawning biomass decreased in the last fifteen years, mainly due to the increased fishing pressure. It is widely accepted that to understand recruitment variability is necessary to study the factors that determine survival of early stages of development. Nutritional condition indexes have been widely used to determine starvation in wild larvae. In the present investigation, condition of M. hubbsi larvae was estimated employing field collected material by means of RNA/DNA index. This is the first attempt to use this index in this species. The change in the RNA/DNA index showed a clear ontogenetic pattern: increasing from preflexion to postflexion stages, showing an apparent decrease at the end of postflexion stage and a conspicuous increase once transformation stage was achieved. This pattern could be indicating that the transition between postflexion and transformation stages might represent a critical phase along larval development. RNA/DNA index also showed significant differences between areas from the spawning grounds characterized by different chlorophyll a concentration and abundance of potential prey. The study of nutritional condition represents a useful tool for identifying favorable nursery areas, providing valuable information for a comprehensive management of a population subject to overfishing.
Fil: Diaz, Marina Vera. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
Fil: Pilar Olivar, M.. Institut de Ciències del Mar. Barcelona; España
Fil: Macchi, Gustavo Javier. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Growth
Hake
Merluccius Hubbsi
Nutritional Condition
Rna/Dna Ratio
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:11336/34760
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning groundDiaz, Marina VeraPilar Olivar, M.Macchi, Gustavo JavierGrowthHakeMerluccius HubbsiNutritional ConditionRna/Dna Ratiohttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Argentinean hake, Merluccius hubbsi, is one of the most important fishery resources of the South-western Atlantic Ocean, but its spawning biomass decreased in the last fifteen years, mainly due to the increased fishing pressure. It is widely accepted that to understand recruitment variability is necessary to study the factors that determine survival of early stages of development. Nutritional condition indexes have been widely used to determine starvation in wild larvae. In the present investigation, condition of M. hubbsi larvae was estimated employing field collected material by means of RNA/DNA index. This is the first attempt to use this index in this species. The change in the RNA/DNA index showed a clear ontogenetic pattern: increasing from preflexion to postflexion stages, showing an apparent decrease at the end of postflexion stage and a conspicuous increase once transformation stage was achieved. This pattern could be indicating that the transition between postflexion and transformation stages might represent a critical phase along larval development. RNA/DNA index also showed significant differences between areas from the spawning grounds characterized by different chlorophyll a concentration and abundance of potential prey. The study of nutritional condition represents a useful tool for identifying favorable nursery areas, providing valuable information for a comprehensive management of a population subject to overfishing.Fil: Diaz, Marina Vera. Instituto Nacional de Investigaciones y Desarrollo Pesquero; ArgentinaFil: Pilar Olivar, M.. Institut de Ciències del Mar. Barcelona; EspañaFil: Macchi, Gustavo Javier. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaElsevier Science2014-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/34760Diaz, Marina Vera; Pilar Olivar, M.; Macchi, Gustavo Javier; Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground; Elsevier Science; Fisheries Research; 160; 8-2014; 60-680165-7836CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1016/j.fishres.2013.11.009info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0165783613002877info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:52:23Zoai:ri.conicet.gov.ar:11336/34760instacron: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:34982025-09-03 09:52:23.472CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
title Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
spellingShingle Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
Diaz, Marina Vera
Growth
Hake
Merluccius Hubbsi
Nutritional Condition
Rna/Dna Ratio
title_short Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
title_full Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
title_fullStr Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
title_full_unstemmed Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
title_sort Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
dc.creator.none.fl_str_mv Diaz, Marina Vera
Pilar Olivar, M.
Macchi, Gustavo Javier
author Diaz, Marina Vera
author_facet Diaz, Marina Vera
Pilar Olivar, M.
Macchi, Gustavo Javier
author_role author
author2 Pilar Olivar, M.
Macchi, Gustavo Javier
author2_role author
author
dc.subject.none.fl_str_mv Growth
Hake
Merluccius Hubbsi
Nutritional Condition
Rna/Dna Ratio
topic Growth
Hake
Merluccius Hubbsi
Nutritional Condition
Rna/Dna Ratio
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Argentinean hake, Merluccius hubbsi, is one of the most important fishery resources of the South-western Atlantic Ocean, but its spawning biomass decreased in the last fifteen years, mainly due to the increased fishing pressure. It is widely accepted that to understand recruitment variability is necessary to study the factors that determine survival of early stages of development. Nutritional condition indexes have been widely used to determine starvation in wild larvae. In the present investigation, condition of M. hubbsi larvae was estimated employing field collected material by means of RNA/DNA index. This is the first attempt to use this index in this species. The change in the RNA/DNA index showed a clear ontogenetic pattern: increasing from preflexion to postflexion stages, showing an apparent decrease at the end of postflexion stage and a conspicuous increase once transformation stage was achieved. This pattern could be indicating that the transition between postflexion and transformation stages might represent a critical phase along larval development. RNA/DNA index also showed significant differences between areas from the spawning grounds characterized by different chlorophyll a concentration and abundance of potential prey. The study of nutritional condition represents a useful tool for identifying favorable nursery areas, providing valuable information for a comprehensive management of a population subject to overfishing.
Fil: Diaz, Marina Vera. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
Fil: Pilar Olivar, M.. Institut de Ciències del Mar. Barcelona; España
Fil: Macchi, Gustavo Javier. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description Argentinean hake, Merluccius hubbsi, is one of the most important fishery resources of the South-western Atlantic Ocean, but its spawning biomass decreased in the last fifteen years, mainly due to the increased fishing pressure. It is widely accepted that to understand recruitment variability is necessary to study the factors that determine survival of early stages of development. Nutritional condition indexes have been widely used to determine starvation in wild larvae. In the present investigation, condition of M. hubbsi larvae was estimated employing field collected material by means of RNA/DNA index. This is the first attempt to use this index in this species. The change in the RNA/DNA index showed a clear ontogenetic pattern: increasing from preflexion to postflexion stages, showing an apparent decrease at the end of postflexion stage and a conspicuous increase once transformation stage was achieved. This pattern could be indicating that the transition between postflexion and transformation stages might represent a critical phase along larval development. RNA/DNA index also showed significant differences between areas from the spawning grounds characterized by different chlorophyll a concentration and abundance of potential prey. The study of nutritional condition represents a useful tool for identifying favorable nursery areas, providing valuable information for a comprehensive management of a population subject to overfishing.
publishDate 2014
dc.date.none.fl_str_mv 2014-08
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/11336/34760
Diaz, Marina Vera; Pilar Olivar, M.; Macchi, Gustavo Javier; Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground; Elsevier Science; Fisheries Research; 160; 8-2014; 60-68
0165-7836
CONICET Digital
CONICET
url http://hdl.handle.net/11336/34760
identifier_str_mv Diaz, Marina Vera; Pilar Olivar, M.; Macchi, Gustavo Javier; Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground; Elsevier Science; Fisheries Research; 160; 8-2014; 60-68
0165-7836
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1016/j.fishres.2013.11.009
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0165783613002877
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
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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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