Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid?
Despite the fact that the stomach of turbot Psetta maxima is a curved tube that forms a half circle, it was demonstrated that gastric evacuation in this predatory flatfish fed natural prey closely followed the surface-dependent cylinder model developed from studies on gadoids with a straight stomach...
Published in: | Journal of Fish Biology |
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Language: | English |
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Online Access: | https://orbit.dtu.dk/en/publications/50645e14-fba0-4791-a666-0f01c37f2ac7 https://doi.org/10.1111/j.1095-8649.2009.02436.x |
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ftdtupubl:oai:pure.atira.dk:publications/50645e14-fba0-4791-a666-0f01c37f2ac7 2023-05-15T18:41:14+02:00 Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? Krog, C. Andersen, Niels Gerner 2009 https://orbit.dtu.dk/en/publications/50645e14-fba0-4791-a666-0f01c37f2ac7 https://doi.org/10.1111/j.1095-8649.2009.02436.x eng eng info:eu-repo/semantics/restrictedAccess Krog , C & Andersen , N G 2009 , ' Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? ' , Journal of Fish Biology , vol. 75 , no. 7 , pp. 1831-1844 . https://doi.org/10.1111/j.1095-8649.2009.02436.x article 2009 ftdtupubl https://doi.org/10.1111/j.1095-8649.2009.02436.x 2023-01-11T23:58:00Z Despite the fact that the stomach of turbot Psetta maxima is a curved tube that forms a half circle, it was demonstrated that gastric evacuation in this predatory flatfish fed natural prey closely followed the surface-dependent cylinder model developed from studies on gadoids with a straight stomach. Evacuation experiments were performed on two size groups of P. maxima fed sandeel Ammodytes tobianus as well as on P. maxima fed brown shrimp Crangon crangon at three different temperatures. This enabled the provision of a gastric evacuation model for studies on P. maxima, which takes into account the effects of the explanatory variables predator size, temperature, prey energy density and resistance of prey to the digestive processes in the stomach. Basically, the cylinder model predicts that a square-root function accurately describes gastric evacuation, which is inconsistent with the conclusion of a previous study on P. maxima that evacuation of A. tobianus is essentially linear with time. Use of the cylinder model to the values of the explanatory variables presented in the latter study, however, gave accurate predictions of the actually acquired evacuation data, which points to the generic value of the model. Article in Journal/Newspaper Turbot Technical University of Denmark: DTU Orbit Journal of Fish Biology 75 7 1831 1844 |
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Open Polar |
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Technical University of Denmark: DTU Orbit |
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ftdtupubl |
language |
English |
description |
Despite the fact that the stomach of turbot Psetta maxima is a curved tube that forms a half circle, it was demonstrated that gastric evacuation in this predatory flatfish fed natural prey closely followed the surface-dependent cylinder model developed from studies on gadoids with a straight stomach. Evacuation experiments were performed on two size groups of P. maxima fed sandeel Ammodytes tobianus as well as on P. maxima fed brown shrimp Crangon crangon at three different temperatures. This enabled the provision of a gastric evacuation model for studies on P. maxima, which takes into account the effects of the explanatory variables predator size, temperature, prey energy density and resistance of prey to the digestive processes in the stomach. Basically, the cylinder model predicts that a square-root function accurately describes gastric evacuation, which is inconsistent with the conclusion of a previous study on P. maxima that evacuation of A. tobianus is essentially linear with time. Use of the cylinder model to the values of the explanatory variables presented in the latter study, however, gave accurate predictions of the actually acquired evacuation data, which points to the generic value of the model. |
format |
Article in Journal/Newspaper |
author |
Krog, C. Andersen, Niels Gerner |
spellingShingle |
Krog, C. Andersen, Niels Gerner Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? |
author_facet |
Krog, C. Andersen, Niels Gerner |
author_sort |
Krog, C. |
title |
Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? |
title_short |
Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? |
title_full |
Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? |
title_fullStr |
Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? |
title_full_unstemmed |
Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? |
title_sort |
are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? |
publishDate |
2009 |
url |
https://orbit.dtu.dk/en/publications/50645e14-fba0-4791-a666-0f01c37f2ac7 https://doi.org/10.1111/j.1095-8649.2009.02436.x |
genre |
Turbot |
genre_facet |
Turbot |
op_source |
Krog , C & Andersen , N G 2009 , ' Are the dynamics of gastric evacuation of natural prey in a piscivorous flatfish different from what is going on in a gadoid? ' , Journal of Fish Biology , vol. 75 , no. 7 , pp. 1831-1844 . https://doi.org/10.1111/j.1095-8649.2009.02436.x |
op_rights |
info:eu-repo/semantics/restrictedAccess |
op_doi |
https://doi.org/10.1111/j.1095-8649.2009.02436.x |
container_title |
Journal of Fish Biology |
container_volume |
75 |
container_issue |
7 |
container_start_page |
1831 |
op_container_end_page |
1844 |
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1766230726408142848 |