Catfishes as prey items of Potamotrygonid stingrays in the Solimões and Negro rivers, Brazilian Amazon / Os bagres como presas de raias Potamotrygonidae nos rios Solimões e Negro, Amazônia brasileira
Biota neotrop. (Online, Ed. port.)
;
13(1): 376-379, jan.-mar. 2013. tab
Article
in English
| LILACS
| ID: lil-673183
ABSTRACT
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.
RESUMO
Apesar de ter sido reportado sobre a raridade de bagres na alimentação de raias de água doce, a presença deles tem sido comumente observada em conteúdos estomacais de espécies dos rios Solimões e Negro. Os conteúdos estomacais de seis indivíduos de raias do rio Solimões e 64 do rio Negro foram analisados e os bagres (distribuídos nas famílias Callichthyidae, Cetopsidae, Doradidae e Loricariidae) foram consumidos por quatro e 10 raias, respectivamente, com a frequência de ocorrência de 20%. A ocorrência de Siluriformes, mesmo baixa, indica uma participação relevante deste grupo como presas na dieta dos potamotrigonídeos.
Full text:
Available
Index:
LILACS (Americas)
Country/Region as subject:
South America
/
Brazil
Language:
English
Journal:
Biota neotrop. (Online, Ed. port.)
Journal subject:
Tropical Medicine
/
Environmental Health
Year:
2013
Type:
Article
Affiliation country:
Brazil
Institution/Affiliation country:
Universidade de São Paulo/BR
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