Pike predators induce morphological changes in young perch and roach

被引：60

作者：

Eklov, P. ^{[1
]}

Jonsson, P. ^{[1
]}

机构：

[1] Uppsala Univ, Dept Ecol & Evolut Limnol, Evolutionary Biol Ctr, SE-75236 Uppsala, Sweden

来源：

JOURNAL OF FISH BIOLOGY | 2007年 / 70卷 / 01期

关键词：

chemical cues; Esox; Perca; phenotypic plasticity; predation; Rutilus;

D O I：

10.1111/j.1095-8649.2006.01283.x

中图分类号：

S9 [水产、渔业];

学科分类号：

0908 ;

摘要：

The morphological response of two I year-old prey species, perch Perca fluviatilis and roach Rutilus rutilus to the presence of predatory pike Esox lucius was tested in a 6 week aquarium experiment. The growth of perch was higher than that of roach but there was no difference in growth of prey between predator and control treatments. The presence of pike caused morphological changes in both perch and roach. Perch showed an increase in body depth during the experiment whereas the morphological response of roach to pike was more related to a displacement of the dorsal and pelvic fins and width of life anal fin. Differences in morphological responses of perch and roach to pike can be interpreted by their overall differences in antipredator strategies. (c) 2007 The Authors Journal compilation (c) 2007 The Fisheries Society of the British Isles.

引用

页码：155 / 164

页数：10

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