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Increased mortality of growth‐enhanced transgenic common carp ( Cyprinus carpio L.) under short‐term predation risk
Author(s) -
Duan M.,
Zhang T.,
Hu W.,
Guan B.,
Wang Y.,
Li Z.,
Zhu Z.
Publication year - 2010
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.2010.01479.x
Subject(s) - cyprinus , biology , predation , carp , common carp , predator , transgene , fish <actinopterygii> , zoology , fishery , ecology , gene , genetics
Summary There is strong evidence that genetic capacity for growth evolves toward an optimum rather than an absolute maximum. This implies that fast growth has a cost and that trade‐offs occur between growth and other life‐history traits. In this study, we conducted a series of predation trials with a paired‐contrast design to test the differences in anti‐predator ability between growth‐enhanced transgenic and non‐transgenic common carp ( Cyprinus carpio L.). We showed that young transgenic fish suffered higher predation mortality than control carp in both small‐bodied and large‐bodied size‐matched trials, and thus possessed lower anti‐predator ability. Our results suggest that a trade‐off exists between growth rate and survival such that rapid growth entails a cost in terms of mortality.