![]() ![]() We reconstruct the evolution of calling site preferences, both broadly categorized and at a finer scale, onto a phylogenetic tree for 148 species with five markers (∼ 3600 bp). Here we assess the potential impact of environmental constraints on the evolution of advertisement call in four groups of torrent dwelling frogs in the family Ranidae. Yet, few empirical studies have verified this prediction, possibly due to a shortcoming in habitat characterization, which is often too broad. ![]() Strong environmental constraints should drive call evolution, favoring signals with greater transmission distance and content integrity in a given calling habitat. While acoustic signals are important for communication in many taxa, signal propagation is affected by environmental properties.
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