Cannibalism in Arctic charr: do all individuals have the same propensity to be cannibals?
By comparing large Arctic charr Salvelinus alpinus , which had shown a persistent cannibalistic response varying from zero to very high in succeeding laboratory trials, with their individual cannibalistic behaviour after release into a natural lake inhabited by small Arctic charr, it was found that...
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crwiley:10.1111/j.0022-1112.2005.00646.x 2023-12-03T10:15:24+01:00 Cannibalism in Arctic charr: do all individuals have the same propensity to be cannibals? Svenning, M.‐A. Borgstrøm, R. 2005 http://dx.doi.org/10.1111/j.0022-1112.2005.00646.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2005.00646.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2005.00646.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Biology volume 66, issue 4, page 957-965 ISSN 0022-1112 1095-8649 Aquatic Science Ecology, Evolution, Behavior and Systematics journal-article 2005 crwiley https://doi.org/10.1111/j.0022-1112.2005.00646.x 2023-11-09T13:22:17Z By comparing large Arctic charr Salvelinus alpinus , which had shown a persistent cannibalistic response varying from zero to very high in succeeding laboratory trials, with their individual cannibalistic behaviour after release into a natural lake inhabited by small Arctic charr, it was found that all Arctic charr had the potential to become cannibalistic, irrespective of their laboratory behaviour. More specifically, Arctic charr that never fed on prey fishes when offered them in the tank experiments turned to cannibalism when released in the lake, highlighting the potential difficulties in extrapolating laboratory results to natural settings. This was also true for naive fish that had no prior experience of eating live food. Since no significant increase in the number of prey consumed during each of the succeeding laboratory trials was found, and naive fish showed a response under natural conditions similar to that of their counterparts, the training of the Arctic charr (or experience or learning) probably had no effect upon the piscivorous or cannibalistic response after stocking. Thus, the study appeared to demonstrate that most variations in cannibalism in Arctic charr was simply a function of environmental conditions, depending on the density of conspecifics v . alternative prey, and the relative size difference between predator and prey, rather than any genetic influence. Article in Journal/Newspaper Arctic charr Arctic Salvelinus alpinus Wiley Online Library (via Crossref) Arctic Journal of Fish Biology 66 4 957 965 |
institution |
Open Polar |
collection |
Wiley Online Library (via Crossref) |
op_collection_id |
crwiley |
language |
English |
topic |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Aquatic Science Ecology, Evolution, Behavior and Systematics Svenning, M.‐A. Borgstrøm, R. Cannibalism in Arctic charr: do all individuals have the same propensity to be cannibals? |
topic_facet |
Aquatic Science Ecology, Evolution, Behavior and Systematics |
description |
By comparing large Arctic charr Salvelinus alpinus , which had shown a persistent cannibalistic response varying from zero to very high in succeeding laboratory trials, with their individual cannibalistic behaviour after release into a natural lake inhabited by small Arctic charr, it was found that all Arctic charr had the potential to become cannibalistic, irrespective of their laboratory behaviour. More specifically, Arctic charr that never fed on prey fishes when offered them in the tank experiments turned to cannibalism when released in the lake, highlighting the potential difficulties in extrapolating laboratory results to natural settings. This was also true for naive fish that had no prior experience of eating live food. Since no significant increase in the number of prey consumed during each of the succeeding laboratory trials was found, and naive fish showed a response under natural conditions similar to that of their counterparts, the training of the Arctic charr (or experience or learning) probably had no effect upon the piscivorous or cannibalistic response after stocking. Thus, the study appeared to demonstrate that most variations in cannibalism in Arctic charr was simply a function of environmental conditions, depending on the density of conspecifics v . alternative prey, and the relative size difference between predator and prey, rather than any genetic influence. |
format |
Article in Journal/Newspaper |
author |
Svenning, M.‐A. Borgstrøm, R. |
author_facet |
Svenning, M.‐A. Borgstrøm, R. |
author_sort |
Svenning, M.‐A. |
title |
Cannibalism in Arctic charr: do all individuals have the same propensity to be cannibals? |
title_short |
Cannibalism in Arctic charr: do all individuals have the same propensity to be cannibals? |
title_full |
Cannibalism in Arctic charr: do all individuals have the same propensity to be cannibals? |
title_fullStr |
Cannibalism in Arctic charr: do all individuals have the same propensity to be cannibals? |
title_full_unstemmed |
Cannibalism in Arctic charr: do all individuals have the same propensity to be cannibals? |
title_sort |
cannibalism in arctic charr: do all individuals have the same propensity to be cannibals? |
publisher |
Wiley |
publishDate |
2005 |
url |
http://dx.doi.org/10.1111/j.0022-1112.2005.00646.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.0022-1112.2005.00646.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.0022-1112.2005.00646.x |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic charr Arctic Salvelinus alpinus |
genre_facet |
Arctic charr Arctic Salvelinus alpinus |
op_source |
Journal of Fish Biology volume 66, issue 4, page 957-965 ISSN 0022-1112 1095-8649 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.0022-1112.2005.00646.x |
container_title |
Journal of Fish Biology |
container_volume |
66 |
container_issue |
4 |
container_start_page |
957 |
op_container_end_page |
965 |
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1784262316709117952 |