SciELO - Scientific Electronic Library Online

vol.94 número1Chromosomal characterization of Pseudonannolene strinatii (Spirostreptida, Pseudonannolenidae)Culicídeos associados a entrenós de bambu e bromélias, com ênfase em Aedes (Stegomyia) albopictus (Diptera, Culicidae) na Mata Atlântica, Paraná, Brasil índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados


Iheringia. Série Zoologia

versão impressa ISSN 0073-4721versão On-line ISSN 1678-4766


MANEYRO, Raúl et al. Diet of the South American frog Leptodactylus ocellatus (Anura, Leptodactylidae) in Uruguay. Iheringia, Sér. Zool. [online]. 2004, vol.94, n.1, pp.57-61. ISSN 0073-4721.

The diet of Leptodactylus ocellatus (L., 1758) was studied in specimens collected at Maldonado Department (Uruguay), where monthly surveys were made between August 1998 and March 2000. A total of 143 frogs were collected, measured, sexed, and dissected, to assess stomach contents. The anurans were grouped into three age classes and four categories (considering sex and capture date). The trophic amplitude for each age class and sex-season category was quantified using Shannon-Weaver Index, and the trophic niche overlap between ages and categories by using the Pianka Index. Comparisons among treatments were made by G-tests. The most important prey items were coleopterans (IRI = 2547), and significant correlations were found between predator and prey sizes. The major differences on diet composition were found between extreme age classes (froglets and adults). Significant differences were also detected between sexes in the cold season but not in the warm season. Any of these changes in diet may be related with the availability of prey.

Palavras-chave : Trophic niche; Amphibia; Leptodactylus ocellatus; Uruguay.

        · texto em Inglês     · Inglês ( pdf )


Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons