Vertebrates consumed by Brycon opalinus (Pisces, Characidae) in rivers in State Park of the Serra do Mar (SP, Brazil)

Analysis of feeding of the pirapitinga do sul, Brycon opalinus, an endangered fish in rivers of the Atlantic Forest of the Serra do Mar in southeastern Brazil, revealed the occurrence of uncommon items. Species of this genus are opportunist omnivores and feed on plant and animal items, such as flowe...

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Bibliographic Details
Published inBiota neotropica Vol. 6; no. 3
Main Authors Gomiero, Leandro Muller, Briani, Denis Cristiano, Giasson, Luis Olimpio Menta
Format Journal Article
LanguageEnglish
Published 01.01.2006
Subjects
Anura
Brycon opalinus
Characidae
Eleutherodactylus guentheri
Hylidae
Leptodactylidae
Rodentia
Sigmodontinae
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Summary:Analysis of feeding of the pirapitinga do sul, Brycon opalinus, an endangered fish in rivers of the Atlantic Forest of the Serra do Mar in southeastern Brazil, revealed the occurrence of uncommon items. Species of this genus are opportunist omnivores and feed on plant and animal items, such as flowers, leaves, fruits, seeds, and a wide variety of insects. In three rivers of State Park of the Serra do Mar - Santa Virginia Unit, B. opalinus presented three uncommon animal items: the amphibians Hypsiboas aff. pardalis (Anura, Hylidae) and Eleutherodactylus guentheri (Anura, Leptodactylidae), and the mammal Oligoryzomys cf. nigripes (Rodentia, Sigmodontinae). This register was related with the rains, when animal or plant matter carried into the river can be consumed by B. opalinus, even if they are not habitually eaten by this species. The preserved riparian forest is of prime importance in supplying animal and plant food items and for maintaining biotic and abiotic conditions for the survival of B. opalinus.
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ISSN:1676-0611
1676-0611