1. Ecomorfologia e dieta refletem a segregação entre duas espécies de Siluriformes que habitam um córrego do Planalto da Bodoquena, no Brasil Central
- Author
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Otávio Froehlich, Francisco Severo-Neto, and Fabrício Barreto Teresa
- Subjects
mesohabitats ,trophic ecology ,Pimelodella ,geography ,Plateau ,geography.geographical_feature_category ,biology ,Ecology ,Ecomorphology ,Imparfinis ,STREAMS ,Generalist and specialist species ,biology.organism_classification ,Habitat ,Benthic zone ,ecomorphogical traits ,lcsh:Zoology ,Animal Science and Zoology ,lcsh:QL1-991 ,traços ecomorfológicos ,meso-hábitats ,ecologia trófica ,Trophic level - Abstract
Pimelodella taenioptera Miranda Ribeiro, 1914 and Imparfinis schubarti (Gomes, 1956) are two of the most common fish species in Bodoquena Plateau streams, Paraguay basin. These species have benthic habits and subaquatical observations suggested that they present differentiation in their preference for mesohabitat types. Pimelodella taenioptera shows preference for slow waters, such as pools, while I. schubarti is associated to riffles. In this study we investigated if the known patterns of mesohabitat use of P. taenioptera and I. schubarti can be predict by their ecomorphological and trophic traits. We described the dietary habits and ecomorphological attributes of P. taenioptera and I. schubarti individuals, captured in the Parque Nacional da Serra da Bodoquena (PNSB), Mato Grosso do Sul state, central Brazil. Pimelodella taenioptera presented a more generalist diet, consuming a total of 23 different food items. Imparfinis schubarti have a diet based exclusively on aquatic insects. The ecomorphological analysis revealed that the species differed in relation to five morphological traits associated to habitat use (p
- Published
- 2015