Similaridade do sítio de vocalização em uma comunidade de anfíbios anuros na região noroeste do Estado de São Paulo, Brasil

Abstract

ABSTRACT. Sim ilarity of call site in anu ran community in Northwestcrn São Paulo State, Brazil (Amphibia, Anura). The breadth and overlap Df mal e call site were determined for 15 anuran species fi·om a temporruy pond in N0I1hwestem São Paulo State, Brazil. Four measurements were made at lhe point of capture Df each calling male and the frequency of mating call was detennined. There was a high overlap along each variable Df call site, but less than 28% 01' possible species pairs presented high overlap for ali variables. Taxonomically related species pairs calling from grass presented spatial and acoustic segregation, while those calling from the ground presented only acoustic segregation. The similarity of call site seems to be not only related to the taxonomic relationships but also with the body size and spatial heterogeneity.

Riqueza e distribuição espaço-temporal de anuros em um remanescente de Floresta de Araucária no sudeste do Paraná

“…A sobreposição no uso do sítio de vocalização foi determinada pela aplicação do índice de similaridade de Morisita-Horn (C H ), com posterior aná-lise de agrupamento pelo método de média não ponderada (UPGMA) (KREBS 1999). Nessa análise, foram consideradas somente as espécies cujo número de observações foi maior ou igual a cinco (ROSSA-FERES & JIM 2001). Os agrupamentos foram definidos pelo valor mínimo de 65% de similaridade, sendo a representação da matriz de similaridade no dendrograma avaliada pela determinação do Coeficiente de Correlação Cofenética (r de Pearson).…”

“…A segregação que ocorre entre as espécies de anuros durante a atividade reprodutiva está relacionada com as características físicas do hábitat (RABB 1973, CARDOSO et al 1989, com a morfologia e com o tamanho de cada espécie (CRUMP 1971, HÖDL 1977, ROSSA-FERES & JIM 2001, BERTOLUCI & RODRIGUES 2002.…”

Characterization and taxonomic key for tadpoles (Amphibia: Anura) from the northwestern region of São Paulo State, Brazil

“…As a consequence, identification keys are valuable tools, especially where the anurofauna is poorly known, as is the case for the Brazilian inland regions (Haddad & Sazima 1992, Brandão & Araújo 1998, Haddad 1998. Despite the intensive use of land for agriculture and pasture activities (PROBIO 1998), 29 species of anurans have been registered in the Northwestern region of São Paulo State (Vizotto 1967, Cais 1992, Bernarde & Kokubum 1999, Rossa-Feres & Jim 2001. The climate of this region is AW type, with a rainy season (October to March) and a pronounced dry season (April to September) that receive only 15% of the total annual precipitation, which ranges from 1100 to 1500 mm (Barcha & Arid 1971).…”

“…The climate of this region is AW type, with a rainy season (October to March) and a pronounced dry season (April to September) that receive only 15% of the total annual precipitation, which ranges from 1100 to 1500 mm (Barcha & Arid 1971). The climate and human activities have restricted the environment available for the development of tadpoles mostly to temporary ponds, with annual variations in the hydroperiod (Rossa-Feres & Jim 2001). In this report, we provide a morphological characterization and taxonomic key for tadpoles of 22 species for which the larval stages are known…”

Mites associated to Xylopia aromatica (Lam.) Mart. (Annonaceae) in urban and rural fragments of semidecidual forest

“…The climate of this region is tropical hot and humid (Cwa-Aw, according to Köpen classification), characterized by a hot and humid season in the summer and another with dry weather in winter. Every year the rainy season (October to March) starts at variable dates and receives 85% of the annual rainfall, whereas the cold and dry season (April to September) receives only 15% (Rossa-Feres & Jim 2001), that varies from 1,100 to 1,250 mm (± 225 mm) (Barcha & Arid 1971).…”