Abstract
Abstract A negative relationship between parasite intensity and male ornament condition or sexual display rate is one of the conditions of the parasite-mediated sexual selection model. In anurans, temporal properties of calling behavior, and particularly calling rates, are the best candidates to express a negative relationship with parasite intensity, given the high energy costs of calling and the fact that calls are potentially under strong intersexual selection. We studied the relationship between call parameters and helminth parasite intensity in males of a Brazilian subtropical treefrog, Hypsiboas prasinus. We tested the hypotheses that: 1) calling characteristics are correlated negatively to parasite intensity; and 2) the relationship between calling performance and parasite intensity is more pronounced when dynamic properties are considered. According to our predictions, only rate, the most important dynamic property of calling behavior, is associated with individual variation in parasite intensity....
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