| Behavioural responses of hatchery-reared and wild cod Gadus morhua to mechano-acoustic predator signals. | |
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MedLine Citation:
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PMID: 21539552 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The behavioural responses of wild (predator-experienced) and hatchery-reared (predator-naive) cod Gadus morhua to standardized mechano-acoustic (MA) stimuli were compared in the laboratory. Wild fish responded mainly with freezing and fast-start escapes away from the stimulus, whereas hatchery-reared fish often ignored or approached the stimulus. Wild fish also had stronger responses, turning faster during escapes and reducing activity immediately after the stimulus. Both fish types were less active on a 'risky' bare substratum after the stimulus. The antipredator responses of wild fish were consistent to repeated stimuli, whereas hatchery-reared fish that had generally only encountered harmless stimuli showed more variable responses with lower repeatability. This suggests that experience plays a role in shaping the behavioural response of fishes to MA stimuli. |
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Authors:
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J J Meager; P Rodewald; P Domenici; A Fernö; T Järvi; J E Skjaeraasen; G K Sverdrup |
Publication Detail:
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Type: Journal Article Date: 2011-03-28 |
Journal Detail:
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Title: Journal of fish biology Volume: 78 ISSN: 1095-8649 ISO Abbreviation: J. Fish Biol. Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-05-04 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0214055 Medline TA: J Fish Biol Country: England |
Other Details:
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Languages: eng Pagination: 1437-50 Citation Subset: IM |
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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Department of Biology, University of Bergen, P. O. Box 7800, Bergen N-5020, Norway Department of Biosciences, P. O. Box 56, University of Helsinki, Helsinki FI-00014, Finland CNR-IAMC Loc. Sa Mardini, Torregrande 09072, Oristano, Italy Institute of Marine Research, Bergen N-5817, Norway Swedish Board of Fisheries, Drottningholm S-178 93, Sweden Department of Zoology, Stockholm University, Stockholm S-106 91, Sweden. |
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