Resource partitioning among freshwater congeneric fishes (Loricariidae: Hypostomus): trophic, spatial, and temporal dimensions
نویسندگان
چکیده
Resource partitioning is essential for coexistence of phylogenetically related species in altered environments, where changes biotopes can limit resources and change ecological strategies. We investigated resource between two congeneric catfishes (Hypostomus affinis H. luetkeni) three niche dimensions (trophic, spatial, temporal) a Neotropical reservoir. tested the hypothesis that use different mesohabitats (spatial dimension) more relevant species, morphological differences confer advantages occupation. evaluated morphology, diet composition abundance along spatial-temporal gradient. A high dietary overlap low temporal variability were found, indicating these play minor role distribution. However, strong spatial segregation modulated apparently by was observed. Hypostomus luetkeni has larger oral disk area, flatter body occupation lotics habitats, whereas relatively fins provide efficient displacements lentic habitats. Spatial main driver modulating mechanism probably have been amplified this environment.
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ژورنال
عنوان ژورنال: Studies on Neotropical Fauna and Environment
سال: 2021
ISSN: ['0165-0521', '1744-5140']
DOI: https://doi.org/10.1080/01650521.2021.2010974