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Richness of species and density of vocalization of anurans in an urban area of Corumba, Mato Grosso do Sul, Brazil Riqueza e densidade de vocalizacoes de anuros Amphibia em uma area urbana de Corumba, Mato Grosso do Sul, Brasil


, : Richness of species and density of vocalization of anurans in an urban area of Corumba, Mato Grosso do Sul, Brazil Riqueza e densidade de vocalizacoes de anuros Amphibia em uma area urbana de Corumba, Mato Grosso do Sul, Brasil. Revista Brasileira de Zoologia. dezembro; 214: 887-892

The richness and intensity of vocalization of anurans in urban areas of Corumba, State of Mato Grosso do Sul, Brazil, were studied from February 2002 to January 2003 in a secondary forest and surroundings of a temporary pond. We used a transect with four stop sites-on which the presence of species and the intensity of vocalization were recorded according to North American Amphibian Monitoring Population index. The turn when vocalization happened was also recorded. We registered 16 species of four families: Bufonidae (2), Hylidae (7), Microhylidae (1), and Leptodactylidae (6). The reproduction of these species was correlated to the rainy season, from December to March (r2 = 0,806, F(1,10) = 41,530 p = 0,002, n = 12). The species that presented greater intensity of vocalization were Scinax nasicus (Cope, 1862) and Physalaemus albonotatus (Steindachner,1864),with peaks during January. The species that presented the greater period of vocalization was Leptodactylus fuscus (Schneider, 1799), from September to February. The majority of species and individuals vocalized from 7:00 p.m. to 11:00 p.m.

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