Ecological outcomes of hybridization vary extensively in Catostomus fishes.

ABSTRACT: Hybridization outcomes vary geographically and can depend on the environment. Hybridization can also reshape biotic interactions, leading to ecological shifts. If hybrids function differently ecologically in ways that enhance or reduce fitness, and those ecological roles vary geographically, ecological factors might explain variation in hybridization outcomes. However, relatively few studies have focused on ecological traits of hybrids. We compared the feeding ecology of Catostomus fish species and hybrids by using stable isotopes (δ¹³ C and δ¹⁵ N) as a proxy for diet and habitat use, and compared two native species, an introduced species, and three interspecific hybrid crosses. We included hybrids and parental species from seven rivers where hybridization outcomes va

SUBMITTER: Mandeville EG 

PROVIDER: S-EPMC9801484 | biostudies-literature | 2022 Nov

REPOSITORIES: biostudies-literature