AIM: This study aimed to evaluate influence of hydrological variation, ontogeny and
interspecific variation in the feeding activity and diet composition for P. nattereri and S …

Abstract cDNAs encoding the appetite regulating peptides apelin, cocaine and
amphetamine regulated transcript (CART), cholecystokinin (CCK), peptide YY (PYY) and …

Abstract cDNAs encoding the appetite regulating peptides leptin and ghrelin were isolated
in red-bellied piranha (Characiforme, Serrasalmidae) and their mRNA tissue and brain …

Studies on feeding ecology of fishes are important to understand the relationship between
species and environmental seasonal variations. In tropical rivers, these relationships are …

This study evaluated the incidence of nuclear abnormalities (NA) in four fish species from an
impacted river in Northeastern Brazil, characterized by accumulation of heavy metals and …

This study evaluated the risk to human health from mercury (Hg) exposure through fish
consumption in the Pantanal, Brazil. In order to address these risks, Hg concentrations and …

Giant otters Pteronura brasiliensis are semiaquatic mammals that mainly eat fish, the
abundance of which is affected by seasonal flooding and habitat structure. The piscivorous …

Unraveling factors that enable the coexistence of species occupying similar niches is a
challenge in Ecology. In the Amazon basin, several piranha species (Serrasalmidae) co …

The components that mold the structure of parasitic fauna are used as objects of study in an
attempt to find patterns in their distribution. It is known that phylogeny (represented by …

A ecologia trófica de morcegos do Brasil continua pouco conhecida, não sendo até então,
considerado a predação como algo significativo para a mortalidade desses animais. Apesar …