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dc.contributor.author
Diaz, Marina Vera
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dc.contributor.author
Pilar Olivar, M.
dc.contributor.author
Macchi, Gustavo Javier
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dc.date.available
2018-01-26T19:21:11Z
dc.date.issued
2014-08
dc.identifier.citation
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
dc.identifier.issn
0165-7836
dc.identifier.uri
http://hdl.handle.net/11336/34760
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Growth
dc.subject
Hake
dc.subject
Merluccius Hubbsi
dc.subject
Nutritional Condition
dc.subject
Rna/Dna Ratio
dc.subject.classification
Otras Ciencias Biológicas
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Larval condition of Merluccius hubbsi (Marini, 1933) in the northern Patagonian spawning ground
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-01-26T18:56:37Z
dc.journal.volume
160
dc.journal.pagination
60-68
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Diaz, Marina Vera. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina
dc.description.fil
Fil: Pilar Olivar, M.. Institut de Ciències del Mar. Barcelona; España
dc.description.fil
Fil: Macchi, Gustavo Javier. Instituto Nacional de Investigaciones y Desarrollo Pesquero; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.journal.title
Fisheries Research
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.fishres.2013.11.009
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0165783613002877
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