Trophic assessment of three sympatric batoid species in the Southern Gulf of California.

ABSTRACT: The competitive exclusion principle establishes that the coexistence of closely related species requires a certain degree of resource partitioning. However, populations have individuals with different morphological or behavioral traits (e.g., maturity stages, sexes, temporal or spatial segregation). This interaction often results in a multi-level differentiation in food preferences and habits. We explored such resource partitioning between and within three batoid species: Hypanus dipterurus, Narcine entemedor, and Rhinoptera steindachneri in the southern Gulf of California, Mexico, using a combination of stomach content (excluding R. steindachneri) and stable isotope analyses. We found a clear differentiation between H. dipterurus and N. entemed

SUBMITTER: Enriquez-Garcia AB 

PROVIDER: S-EPMC10519201 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature