Metabolic rate and behavioral traits in Salmo trutta

The behavior of organisms can be subject to human induced selection such as that arising from fishing. Angling is expected to induce mortality on fish with bold and explorative behavior, which are behaviors commonly linked to a high standard metabolic rate. We studied the transgenerational response of brown trout (Salmo trutta) to angling-induced selection by examining the behavior and metabolism of 1-year-old parr between parents that were or were not captured by experimental fly fishing. We performed the angling selection experiment on both a wild and a captive population, and compared the offspring for standard metabolic rate and behavior under predation risk in common garden conditions. Angling had population-specific effects on risk taking and exploration tendency, but no effects on standard metabolic rate. Our study adds to the evidence that angling can induce transgenerational responses on fish personality. However, understanding the mechanisms of divergent responses between the ...生物的行为可受到人为诱导的选择作用，例如源自渔业捕捞的选择压力。垂钓被认为会对表现出大胆探索行为的鱼类造成致死选择，而这类行为通常与较高的标准代谢率（standard metabolic rate）相关。我们通过检测经实验性飞蝇钓捕获的亲代与未被捕获的亲代所产生的1龄稚鱼的行为与代谢特征，研究了褐鳟（Salmo trutta）对垂钓诱导选择的跨代响应。我们对野生种群与圈养种群均开展了垂钓选择实验，并在同质园（common garden）饲养条件下，比较两组后代的标准代谢率以及捕食风险下的行为表现。垂钓对鱼类的风险承担倾向与探索行为具有种群特异性影响，但对标准代谢率并无显著作用。本研究进一步补充了垂钓可诱导鱼类个性特征产生跨代响应的相关证据。然而，关于不同种群间响应差异的具体机制，目前仍有待深入探究……