Local adaptation in brown trout early life-history traits: implications for climate change adaptability.

摘要: Knowledge of local adaptation and adaptive potential natural populations is becoming increasingly relevant due to anthropogenic changes in the environment, such as climate change. The concern that will be negatively affected by increasing temperatures without capacity adapt. Temperature-related adaptability traits related phenology early life history are expected particularly important salmonid fishes. We focused on latter investigated whether four brown trout (Salmo trutta) locally adapted life-history traits. These spawn rivers experience different temperature conditions during time incubation eggs embryos. They were reared a common-garden experiment at three temperatures. Quantitative genetic differentiation (QST) exceeded neutral molecular (FST) for two traits, indicating adaptation. A effect was observed However, this varied among reaction norms, corresponding regimes experienced their native environments. Additive variance heritable variation phenotypic plasticity suggest although likely affect some negatively, they may have adapt changing regimes.