Natural history of Hypsiboas leptolineatus (Anura: Hylidae) in Aparados da Serra National Park, Rio Grande do Sul, Brazil

Meriéle Reinke, Clarice Hofstadler Deiques


The natural history of Hypsiboas leptolineatus was studied from December 2003 to July 2005 in the Atlantic Forest ecosystems, Araucarian Forest, open grasslands, and also in transition areas between the Araucarian Forest and open grasslands. The environments listed are located in Aparados da Serra National Park, Cambará do Sul, Rio Grande do Sul, and Praia Grande, Santa Catarina, Brazil. The species live preferentially in lentic water bodies, in open grasslands, using calling sites inside the water body or very close to them. The calling activity occurs all year long, being interrupted only at very low temperatures, and it is mainly nocturnal. Males are territorial, forming nuptial choirs. The territorial defense is done by vocal disputes and probably physical combats may occur, evidenced by marks on the males back. Furthermore, females are bigger than males in weight as well as in head-body length. Clutches are laid in water and the larval development lasts around four months and a half.

Key words: Hylidae, spatial distribution, reproductive period, larval development, Hypsiboas leptolineatus.

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