Influences of potential predictor variables on gastric evacuation in Atlantic cod Gadus morhua feeding on fish prey: parameterization of a generic model
The parameter values of a generic model of gastric evacuation were estimated from evacuation data on Atlantic cod Gadus morhua fed meals of four fish prey: herring Clupea harengus , sprat Sprattus sprattus , lesser sandeel Ammodytes tobianus and dab Limanda limanda . The effects on evacuation of pho...
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crwiley:10.1111/j.1095-8649.2011.03195.x 2024-06-02T08:03:09+00:00 Influences of potential predictor variables on gastric evacuation in Atlantic cod Gadus morhua feeding on fish prey: parameterization of a generic model Andersen, N. G. 2012 http://dx.doi.org/10.1111/j.1095-8649.2011.03195.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2011.03195.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2011.03195.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 80, issue 3, page 595-612 ISSN 0022-1112 1095-8649 journal-article 2012 crwiley https://doi.org/10.1111/j.1095-8649.2011.03195.x 2024-05-03T10:44:22Z The parameter values of a generic model of gastric evacuation were estimated from evacuation data on Atlantic cod Gadus morhua fed meals of four fish prey: herring Clupea harengus , sprat Sprattus sprattus , lesser sandeel Ammodytes tobianus and dab Limanda limanda . The effects on evacuation of photoperiod and pre‐experimental treatment of prey were also tested. Freshly killed A. tobianus were evacuated from the stomach of G. morhua at a rate similar to the value estimated from conspecifics kept deep‐frozen and subsequently thawed prior to the evacuation experiment. The evacuation rate in G. morhua exposed to continuous light did not differ from the rate obtained from fish maintained under a 12L:12D photoperiod. The evacuation rates estimated from the latter fish in the dark and light periods, respectively, were likewise similar. These results indicate that the resistance of prey to the digestive processes is not altered significantly by the pre‐experimental treatment of prey and that there is no diurnal variation per se in the rate of evacuation for G. morhua . Therefore, it is believed that the present parameterization of the evacuation model should prove especially useful for studying the role of G. morhua as a top predator in natural systems. Article in Journal/Newspaper atlantic cod Gadus morhua Wiley Online Library Journal of Fish Biology 80 3 595 612 |
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Wiley Online Library |
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English |
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The parameter values of a generic model of gastric evacuation were estimated from evacuation data on Atlantic cod Gadus morhua fed meals of four fish prey: herring Clupea harengus , sprat Sprattus sprattus , lesser sandeel Ammodytes tobianus and dab Limanda limanda . The effects on evacuation of photoperiod and pre‐experimental treatment of prey were also tested. Freshly killed A. tobianus were evacuated from the stomach of G. morhua at a rate similar to the value estimated from conspecifics kept deep‐frozen and subsequently thawed prior to the evacuation experiment. The evacuation rate in G. morhua exposed to continuous light did not differ from the rate obtained from fish maintained under a 12L:12D photoperiod. The evacuation rates estimated from the latter fish in the dark and light periods, respectively, were likewise similar. These results indicate that the resistance of prey to the digestive processes is not altered significantly by the pre‐experimental treatment of prey and that there is no diurnal variation per se in the rate of evacuation for G. morhua . Therefore, it is believed that the present parameterization of the evacuation model should prove especially useful for studying the role of G. morhua as a top predator in natural systems. |
format |
Article in Journal/Newspaper |
author |
Andersen, N. G. |
spellingShingle |
Andersen, N. G. Influences of potential predictor variables on gastric evacuation in Atlantic cod Gadus morhua feeding on fish prey: parameterization of a generic model |
author_facet |
Andersen, N. G. |
author_sort |
Andersen, N. G. |
title |
Influences of potential predictor variables on gastric evacuation in Atlantic cod Gadus morhua feeding on fish prey: parameterization of a generic model |
title_short |
Influences of potential predictor variables on gastric evacuation in Atlantic cod Gadus morhua feeding on fish prey: parameterization of a generic model |
title_full |
Influences of potential predictor variables on gastric evacuation in Atlantic cod Gadus morhua feeding on fish prey: parameterization of a generic model |
title_fullStr |
Influences of potential predictor variables on gastric evacuation in Atlantic cod Gadus morhua feeding on fish prey: parameterization of a generic model |
title_full_unstemmed |
Influences of potential predictor variables on gastric evacuation in Atlantic cod Gadus morhua feeding on fish prey: parameterization of a generic model |
title_sort |
influences of potential predictor variables on gastric evacuation in atlantic cod gadus morhua feeding on fish prey: parameterization of a generic model |
publisher |
Wiley |
publishDate |
2012 |
url |
http://dx.doi.org/10.1111/j.1095-8649.2011.03195.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1095-8649.2011.03195.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1095-8649.2011.03195.x |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
Journal of Fish Biology volume 80, issue 3, page 595-612 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1095-8649.2011.03195.x |
container_title |
Journal of Fish Biology |
container_volume |
80 |
container_issue |
3 |
container_start_page |
595 |
op_container_end_page |
612 |
_version_ |
1800747627448369152 |