Effects of Brook Trout Invasion on Behavioral and Dietary Shifts in Brown Trout.

ABSTRACT: Behavioral variation within a population is generally maintained by frequency dependent selection, allowing various personalities to coexist. Bolder individuals usually engage in more risky behaviors that can gain fitness benefits such as growth under certain conditions. Therefore, it has been suggested that there should be a link between personality and dietary niches, but the results so far are inconsistent. In addition, the equilibrium of the distribution of behavioral traits and the trophic niche of native populations may shift following the introduction of an invasive species. Here, using the invasive brook trout (Salvelinus fontinalis) and native brown trout (Salmo trutta) as model species in two different natural streams in Sweden, we aimed to test whether (1) the trop

SUBMITTER: Austad B 

PROVIDER: S-EPMC11925602 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature