Publications by authors named "Ivar H Matre"

Article Synopsis
  • Populations can adapt to temperature changes through genetic plasticity and adaptation, but the effects of outbreeding on local responses are not well understood.
  • A study on Atlantic salmon revealed significant differences in traits like body length and thermal tolerance among wild and domesticated populations, with genetic variation influencing these traits.
  • While heritability for thermal performance traits was observed, increased temperatures reduced the heritability of critical thermal maximum, indicating potential challenges for joint evolution in response to climate changes due to negative genetic correlations.
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The diversity of reproduction and associated mating patterns in Atlantic salmon () has long captivated evolutionary biologists. exhibit strategies involving migration, bold mating behaviours and radical morphological and physiological change. One such radical change is the elongation and curvature of the lower jaw in sexually mature males into a hook-like appendage called the kype.

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Background: Domestication of Atlantic salmon for commercial aquaculture has resulted in farmed salmon displaying substantially higher growth rates than wild salmon under farming conditions. In contrast, growth differences between farmed and wild salmon are much smaller when compared in the wild. The mechanisms underlying this contrast between environments remain largely unknown.

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Background: In the past three decades, millions of domesticated Atlantic salmon Salmo salar L. have escaped from farms into the wild. Their offspring display reduced survival in the natural environment, which demonstrates that gene-flow is likely to have a negative effect on wild populations.

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