uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Risk-taking behaviour may explain high predation mortality of GH-transgenic common carp Cyprinus carpio
Show others and affiliations
2013 (English)In: Journal of Fish Biology, ISSN 0022-1112, E-ISSN 1095-8649, Vol. 83, no 5, 1183-1196 p.Article in journal (Refereed) Published
Abstract [en]

The competitive ability and habitat selection of juvenile all-fish GH-transgenic common carp Cyprinus carpio and their size-matched non-transgenic conspecifics, in the absence and presence of predation risk, under different food distributions, were compared. Unequal-competitor ideal-free-distribution analysis showed that a larger proportion of transgenic C. carpio fed within the system, although they were not overrepresented at a higher-quantity food source. Moreover, the analysis showed that transgenic C. carpio maintained a faster growth rate, and were more willing to risk exposure to a predator when foraging, thereby supporting the hypothesis that predation selects against maximal growth rates by removing individuals that display increased foraging effort. Without compensatory behaviours that could mitigate the effects of predation risk, the escaped or released transgenic C. carpio with high-gain and high-risk performance would grow well but probably suffer high predation mortality in nature.

Place, publisher, year, edition, pages
2013. Vol. 83, no 5, 1183-1196 p.
Keyword [en]
food distribution, foraging, growth hormone, predation risk, transgene
National Category
Natural Sciences
URN: urn:nbn:se:uu:diva-211777DOI: 10.1111/jfb.12213ISI: 000326476700006OAI: oai:DiVA.org:uu-211777DiVA: diva2:669038
Available from: 2013-12-02 Created: 2013-12-02 Last updated: 2013-12-02Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Sundström, Fredrik
By organisation
Animal ecology
In the same journal
Journal of Fish Biology
Natural Sciences

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 191 hits
ReferencesLink to record
Permanent link

Direct link