Local environments, not invasive hybridization, influence cardiac performance of native trout under acute thermal stress.

ABSTRACT: Climate-induced expansion of invasive hybridization (breeding between invasive and native species) poses a significant threat to the persistence of many native species worldwide. In the northern U.S. Rocky Mountains, hybridization between native cutthroat trout and non-native rainbow trout has increased in recent decades due, in part, to climate-driven increases in water temperature. It has been postulated that invasive hybridization may enhance physiological tolerance to climate-induced thermal stress because laboratory studies indicate that rainbow trout have a higher thermal tolerance than cutthroat trout. Here, we assessed whether invasive hybridization improves cardiac performance response to acute water temperature stress of native wild trout populations. We collected trout from four

SUBMITTER: Strait JT 

PROVIDER: S-EPMC10883762 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature