Stable resource polymorphism along the benthic littoral-pelagic axis in an invasive crayfish.

ABSTRACT: Although intraspecific variability is now widely recognized as affecting evolutionary and ecological processes, our knowledge on the importance of intraspecific variability within invasive species is still limited. This is despite the fact that understanding the linkage between within-population morphological divergences and the use of different trophic or spatial resources (i.e., resource polymorphism) can help to better predict their ecological impacts on recipient ecosystems. Here, we quantified the extent of resource polymorphism within populations of a worldwide invasive crayfish species, Procambarus clarkii, in 16 lake populations by comparing their trophic (estimated using stable isotope analyses) and morphological characteristics between individuals from the littoral and pelagic ha

SUBMITTER: Lang I 

PROVIDER: S-EPMC7069303 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature