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Revista Brasileira de Zoologia

versión impresa ISSN 0101-8175

Rev. Bras. Zool. vol.10 no.3 Curitiba  1993

http://dx.doi.org/10.1590/S0101-81751993000300013 

Ocupação espacial, alimentação e época reprodutiva de duas espécies de Corydoras Lacépède (Siluroidei, Callichthyidae) coexistentes no rio Alambari (Botucatu, São Paulo)

 

Spatial occupation, feeding and reproductive period of two species of Corydoras Lacépède (Siluroidei, Callichthyidae) coexistents in the Alambari river (Botucatu, São Paulo)

 

 

José Marcelo R. AranhaI; Érica P. CaramaschiII; Ulisses CaramaschiIII

IDepartamento de Zoologia, Universidade Federal do Paraná, Caixa Postal 19020, 81531-970 Curitiba, Paraná, Brasil
IIDepartamento de Ecologia, Universidade Federal do Rio de Janeiro, Caixa Postal 68020, 21944-970 Rio de Janeiro, Rio de Janeiro, Brasil
IIIDepartamento de Vertebrados, Museu Nacional do Rio de Janeiro, Quinta da Boa Vista, 20940-040 Rio de Janeiro, Rio de Janeiro, Brasil

 

 


ABSTRACT

Patterns of spatial occupation, feeding, and reproductive period of two species, Corydoras aeneus and Corydoras gr. carlae (Siluroidei, Callichthyidae), coexistents in the Alambari River (Botucatu, São Paulo), were studied. High diet overlap, partial spatial segregation, and well differentiated reproductive strategies were verified. These findings do not permit to evidence the occurrence of competitive interactions between the analysed species.

Key words: Siluroidei, Callichthyidae, spatial occupation, feeding; reproductive period


 

 

Texto completo disponível apenas em PDF.

Full text available only in PDF format.

 

 

AGRADECIMENTOS. Agradecemos ao Departamento de Zoologia. Universidade Estadual Paulista, Campus de Botucatu, pelas facilidades concedidas durante a realização deste trabalho; a I. Isbrücker, pela identificação das espécies de Corydoras estudadas; a L.C. Forti e R.J.F. Feres, pelo auxilio na identificação de artrópodes dos conteúdos estomacais.

 

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Recebido em 10.XII.1991; aceito em 25.XI.1993.