Countergradient variation in temperature preference in populations of killifish Fundulus heteroclitus.

@article{Fangue2009CountergradientVI,
  title={Countergradient variation in temperature preference in populations of killifish Fundulus heteroclitus.},
  author={Nann A Fangue and Jason E Podrabsky and Larry I. Crawshaw and Patricia M Schulte},
  journal={Physiological and biochemical zoology : PBZ},
  year={2009},
  volume={82 6},
  pages={776-86}
}
Behavioral thermoregulation can allow ectotherms to buffer the effects of changes in environmental temperature, and thus an organism's preferred temperature is thought to be under strong selection. However, this contention has seldom been tested. We used common killifish Fundulus heteroclitus from high-latitude (northern) and low-latitude (southern) populations to investigate intraspecific variation in thermal preference and its relationship to habitat temperature. We quantified the preferred… CONTINUE READING
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