Risk-taking behaviour may explain high predation mortality of GH-transgenic common carp Cyprinus carpio

被引:8
作者
Duan, M. [1 ,2 ]
Zhang, T. [1 ]
Hu, W. [1 ]
Xie, S. [2 ]
Sundstrom, L. F. [3 ]
Li, Z. [1 ]
Zhu, Z. [1 ]
机构
[1] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
[2] Chinese Acad Sci, Inst Hydrobiol, Key Lab Biodivers & Conservat Aquat Organisms, Wuhan 430072, Peoples R China
[3] Uppsala Univ, Dept Anim Ecol, Evolutionary Biol Ctr, SE-75272 Uppsala, Sweden
基金
中国国家自然科学基金;
关键词
food distribution; foraging; growth hormone; predation risk; transgene; GROWTH-HORMONE GENE; IDEAL FREE DISTRIBUTIONS; ENERGETIC EQUIVALENCE; ANTIPREDATOR BEHAVIOR; COMPETITIVE ABILITY; SALMO-SALAR; TRADE-OFFS; FISH; FOOD; SIZE;
D O I
10.1111/jfb.12213
中图分类号
S9 [水产、渔业];
学科分类号
0908 ;
摘要
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. (C) 2013 The Fisheries Society of the British Isles
引用
收藏
页码:1183 / 1196
页数:14
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