| Feeding strategy and cannibalism of the Argentine hake Merluccius hubbsi. | |
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MedLine Citation:
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PMID: 22141888 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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The diet composition and feeding strategy of the Argentine hake Merluccius hubbsi in the San Matías Gulf were analysed in order to use this information for the sustainable management of the fishery. Merluccius hubbsi behaved as an opportunistic predator. Small M. hubbsi consumed planktonic crustaceans, whereas medium and large fish ate numerous prey taxa with low frequency of occurrence and variable specific abundance. Intra- and intercohort cannibalism were detected in all size groups and were particularly significant in large M. hubbsi. Medium-sized M. hubbsi consumed small conspecifics and large-sized M. hubbsi consumed both small and medium M. hubbsi. These results indicate that the removal of large M. hubbsi by fishing may increase the risk of overfishing by two combined effects: a direct effect of recruitment-overfishing and an indirect effect of growth-overfishing through an enhanced cannibalism of medium M. hubbsi on small M. hubbsi. Intra- and intercohort cannibalism and other trophic relationships in the M. hubbsi should therefore be considered explicitly in stock assessment models. |
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Authors:
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M Ocampo Reinaldo; R González; M A Romero |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-11-7 |
Journal Detail:
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Title: Journal of fish biology Volume: 79 ISSN: 1095-8649 ISO Abbreviation: - Publication Date: 2011 Dec |
Date Detail:
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Created Date: 2011-12-6 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0214055 Medline TA: J Fish Biol Country: - |
Other Details:
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Languages: ENG Pagination: 1795-1814 Citation Subset: - |
Copyright Information:
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© 2011 The Authors. Journal of Fish Biology © 2011 The Fisheries Society of the British Isles. |
Affiliation:
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Instituto Multidisciplinario de Investigación y Desarrollo de la Patagonia Norte (IDEPA), Subsede San Antonio Oeste, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), San Antonio Oeste, Argentina Departamento de Ciencias Marinas, Universidad Nacional del Comahue, San Martín 247, R8520BNE San Antonio Oeste, Argentina Instituto de Biología Marina y Pesquera 'Almirante Storni' (IBMPAS), Güemes 1030, R8520CXV San Antonio Oeste, Argentina. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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