Vocalização e comportamento reprodutivo de pseudopaludicola falcipes (hensel, 1867) no município de São Gabriel, RS

Abstract

The reproductive behavior and vocalization Pseudopaludicola falcipes was studied in a farm pond in the municipality of São Gabriel, from March 2009 to February 2010. The population of P. falcipes occupies wetlands with preference for microhabitats exposed soil. The calling activity of males of P. falcipes occurred along the year, but with a notable increase during the rainy months (November to March and August). P. falcipes showed sexual dimorphism, with females larger than males. The number of female eggs show a positive correlation with CRC (r ² = 0.55, n= 13 and p = 0.02), but was not correlated with female weight (r ² = 0.18, n = 13 and p = 0.09). Spawning (n= 2) was deposited a total of 59 eggs, and of these 29 were not fertilized. The reproductive mode of P. falcipes was the mode of type 1, where the eggs are aquatic and without protection, which oviposition takes place in lentic water bodies, developing exotropic tadpole. The vocalization of P. falcipes instinctual consists of notes, each note initially formed by two pulses with the remainder consisting of three pulses. Vocalization was recorded for three males, which were obtained advertisement call and the presence of territorial notes. The both vocalization had a similar duration and intervals, however, it differed from the dominant and fundamental frequencies presented. The emission of the territorial notes were directly associated with the increase in number of males at the farm pond edges, which led to a smaller spacing among them.