Catfishes as prey items of Potamotrygonid stingrays in the Solimões and Negro rivers, Brazilian Amazon

Biota Neotropica

Akemi Shibuya²  Jansen Zuanon¹ 

[1] ,Universidade de São Paulo Instituto de Biociências Departamento de ZoologiaSão Paulo SP ,Brasil

关键词: diet;    feeding;    freshwater stingrays;    Myliobatiformes;    Siluriformes;    alimentação;    dieta;    raias de água doce;    Myliobatiformes;    Siluriformes;   

DOI  :  10.1590/S1676-06032013000100041

来源: SciELO

【 摘 要 】

In spite of the fact that catfish have rarely been reported as food items in the diets of freshwater stingrays, they are commonly observed in the stomach contents of species inhabiting the Solimões and Negro rivers in the Brazilian Amazon. The stomach contents of six rays from the Solimões River and 64 from the Negro River were analyzed, and catfishes (distributed among the families Callichthyidae, Cetopsidae, Doradidae and Loricariidae) were found in the stomach contents of four and 10 of these rays, respectively, comprising a frequency of occurrence of 20%. These data indicate a relevant participation of catfishes in the diets of potamotrygonid rays in the Amazon, and may reflect the regional diversity and abundance of Siluriformes in the region.

【 授权许可】

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