期刊
JOURNAL OF FISH BIOLOGY
卷 75, 期 8, 页码 2143-2153出版社
WILEY-BLACKWELL PUBLISHING, INC
DOI: 10.1111/j.1095-8649.2009.02408.x
关键词
boldness; fish; gravidity; inspection behaviour; predation risk; pregnancy
Differences in predator-inspection behaviour between gravid and non-gravid female as well as between male and female three-spined sticklebacks Gasterosteus aculeatus were investigated. Gravid females confronted with a live rainbow trout Oncorhynchus mykiss showed bolder inspection behaviour than non-gravid ones. The behaviour of gravid females was comparable with that of males, maybe because both face a high risk of predation. The results indicate that antipredator behaviour in female G. aculeatus is not fixed but adjusted to their reproductive state.
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