Dry Season Feeding Profiles of a Characiformes Assemblage in a Brazilian Tropical Stream.

ABSTRACT: Trophic interactions between fish and their resources depends on resource availability and interspecific competition. To understand dry-season trophic profiles of a speciose Characiformes assemblage, we performed stomach content analysis to describe diet and determine levels of niche partitioning and morphological adaptations among eight Characiformes species in the dry season in Mata de Itamacaoca, Chapadinha Municipality, State of Maranhão, northeastern Brazil. Insectivory dominated most diets, with Astyanax cf. bimaculatus and Characidium cf. bimaculatum exhibiting the broadest niches. Specialization occurred in Curimatopsis cf. cryptica (85.07% plant material), and there was significant dietary segregation, with indicator species analysis linki

SUBMITTER: Oliveira EDS 

PROVIDER: S-EPMC12893898 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature