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Evolution of Threespine Stickleback (Gasterosteus aculeatus) Defensive Traits following the Stocking of Brook Trout (Salvelinus fontinalis).

The American naturalist - 1 Apr 2026

Haines Grant E, Sanderson Sarah, Morin-Nadeau Rosalie, Hendry Andrew P

Abstract excerpt

AbstractIn recent decades, numerous observations have been made of evolution induced by anthropogenic change in natural populations. Evolution in response to harvest, climate change, pollution, landscape change, and introduced invasive species are common. Here, we provide evidence for evolution in a new context by documenting a large increase in the frequency of defensive pelvic spines in two unusual threespine...

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PMID: 41855518
DOI: 10.1086/739174

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