Ecology and natural history of Hypsiboas curupi (Anura, Hylidae): An endemic amphibian to the southern Atlantic Forest

Veluma Ialú Molinari De Bastiani, Inaé Ellen Cavasotto, Fernando Ferreira, Elaine Maria Lucas

Abstract


Data on habitat use and life history are essential for evaluation of the conservation status of species, and may direct policy for preservation of natural environments. Over the course of a year, we investigated populations of Hypsiboas curupi regarding (i) nighttime activity patterns; (ii) associations with climatic variables; (iii) the spatial distribution patterns of males and females with respect to microhabitat use; and (iv) variation in body size. The study was carried out from August 2010 to July 2011 in the Parque Estadual Fritz Plaumann, a seasonal deciduous forest fragment in the western region of Santa Catarina, southern Brazil. Calling activity was highest from August to November. The number of calling males was highest at 23h, and the frequency of occurrence was influenced by the air humidity. Calling males, non-calling males, and females differed in their distance from the bank and substrate type used. Females were significantly larger and heavier than males. Our results indicate that H. curupi is highly dependent on bank vegetation, and that changes in riparian vegetation structure due to human activity can result in the loss of sites for calling and oviposition, and may reduce availability of food and shelter.

Keywords: life history, riparian forest, stream-dwelling amphibians, seasonal deciduous forest, microhabitat use.


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