Dominance and predator avoidance in domesticated and wild masu salmon Oncorhynchus masou
作者： TOSHIAKI YAMAMOTO , ULRICH G REINHARDT
DOI: 10.1046/J.1444-2906.2003.00591.X
关键词: Juvenile 、 Dominance (ethology) 、 Fish farming 、 Hatchery 、 Biology 、 Oncorhynchus 、 Predatory fish 、 Predation 、 Fishery 、 Domestication
摘要: ABSTRACT: Dominance, aggression and predator avoidance were compared among farmed, sea-ranched wild juvenile masu salmon Oncorhynchus masou in laboratory experiments. Domesticated fish (farmed sea-ranched), which had been exposed to artificial selection, not dominant against pairwise contests, nor did they show greater aggressiveness. Farmed feeding than fish. Under chemically simulated predation risk, farmed more willing leave cover feed fish, indicating reduced the Our results indicate that selection for fast growth (domestication) favors respond food quickly ignore risk.
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