Genetic variation in life-history reaction norms in a marine fish.

  title={Genetic variation in life-history reaction norms in a marine fish.},
  author={Jeffrey A Hutchings and Douglas P. Swain and Sherrylynn Rowe and James D. Eddington and Velmurugu Puvanendran and Joseph Michael Brown},
  journal={Proceedings. Biological sciences},
  volume={274 1619},
Neither the scale of adaptive variation nor the genetic basis for differential population responses to the environment is known for broadcast-spawning marine fishes. Using a common-garden experimental protocol, we document how larval growth, survival and their norms of reaction differ genetically among four populations of Atlantic cod (Gadus morhua). These traits, and their plastic responses to food and temperature, differed across spatial scales at which microsatellite DNA failed to detect… CONTINUE READING
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