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dc.contributor.author
Belleggia, Mauro
dc.contributor.author
Figueroa, Daniel Enrique
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Irusta, Gabriela
dc.contributor.author
Bremec, Claudia Silvia
dc.date.available
2020-03-17T21:14:14Z
dc.date.issued
2014-12
dc.identifier.citation
Belleggia, Mauro; Figueroa, Daniel Enrique; Irusta, Gabriela; Bremec, Claudia Silvia; Spatio-temporal and ontogenetic changes in the diet of the Argentine hake Merluccius hubbsi; Cambridge University Press; Journal of the Marine Biological Association of the United Kingdom; 94; 8; 12-2014; 1701-1710
dc.identifier.issn
0025-3154
dc.identifier.uri
http://hdl.handle.net/11336/99948
dc.description.abstract
The diet and the trophic level of the Argentine hake Merluccius hubbsi was investigated in the south-west Atlantic Ocean. Stomachs from 3405 specimens, ranging from 10 to 94 cm total length, collected on three research cruises carried out during winter 2011 and summer 2012, were examined at the laboratory. Dietary shifts related to sex, maturity stage, size, age, season, region and hour were examined using generalized linear models. The Argentine hake M. hubbsi fed mainly on zooplankton crustaceans (Themisto gaudichaudii, Euphausia lucens and Munida spp.), followed by fish and cephalopods. During summer, cephalopods (mainly Illex argentinus) were the main prey of M. hubbsi, indicating spatio-temporal changes in the diet. This work also revealed ontogenetic dietary changes associated with size, from zooplankton crustaceans during early life stages (E. lucens, T. gaudichaudii and Munida spp.) to fish and cephalopods. The trophic level of M. hubbsi ranged from 3.43 to 4.51 according to season and region. Cannibalism increased with predator length and contributed a maximum of 8.14% to the diet of M. hubbsi during winter on the inner Patagonian continental shelf.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Cambridge University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
FEEDING ECOLOGY
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MERLUCCIIDAE
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PATAGONIA
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TROPHIC LEVEL
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Ecología
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
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Conservación de la Biodiversidad
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Ciencias Biológicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Spatio-temporal and ontogenetic changes in the diet of the Argentine hake Merluccius hubbsi
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-03-12T15:17:01Z
dc.journal.volume
94
dc.journal.number
8
dc.journal.pagination
1701-1710
dc.journal.pais
Reino Unido
dc.journal.ciudad
Cambridge
dc.description.fil
Fil: Belleggia, Mauro. 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. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Marinas. Laboratorio de Ictiología; Argentina
dc.description.fil
Fil: Figueroa, Daniel Enrique. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Departamento de Ciencias Marinas. Laboratorio de Ictiología; Argentina
dc.description.fil
Fil: Irusta, Gabriela. 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
dc.description.fil
Fil: Bremec, Claudia Silvia. 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
dc.journal.title
Journal of the Marine Biological Association of the United Kingdom
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1017/S0025315414000629
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/journal-of-the-marine-biological-association-of-the-united-kingdom/article/spatiotemporal-and-ontogenetic-changes-in-the-diet-of-the-argentine-hake-merluccius-hubbsi/40D118B0C2E4B6F67CD3F8A7E4785CE0
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