Habitat fragmentation induces rapid phenotypic divergence of migratory and isolated sticklebacks

Aparajitha Ramesh, Ton Groothuis, Franz Weissing & Marion Nicolaus
The adaptive capacity of many organisms is seriously challenged by human-imposed environmental change, which currently happens at unprecedented rates and magnitudes. For migratory fish, habitat fragmentation is a major challenge that can compromise their survival and reproduction. Therefore, it is important to study if fish populations can adapt to such modifications of their habitat. Here, we study whether originally anadromous three-spined stickleback populations (Gasterosteus aculeatus; ‘migrants’) changed in behavior and morphology in response to human-induced...
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