Behaviour 2019
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Advertisement calls of two lime treefrogs and aggressive call of Sphaenorhynchus bromelicola (Anura)
João P. Bovolon1, Camila Zornosa-Torres1,2, Guilherme Augusto-Alves1,2, Antonio P. Almeida3, João L. Gasparini4, Luís F. Toledo1. 1Laboratório de História Natural de Anfíbios Brasileiros (LaHNAB), Departamento de Biologia Animal, Instituto de Biologia, Unicamp., Campinas, São Paulo, Brazil; 2Programa de Pós-Graduação em Ecologia, Instituto de Biologia, Unicamp, Campinas, São Paulo, Brazil; 3Instituto Chico Mendes de Conservação da Biodiversidade - Reserva Biológica de Comboios, S/N, Regência., Linhares, Espirito Santo, Brazil; 4Programa de Pós-Graduação em Ciências Ambientais e Conservação (CiAC), Instituto de Biodiversidade e Sustentabilidade (NUPEM), Universidade Federal do Rio de Janeiro., Macaé, Rio de Janeiro, Brazil

The species of the Neotropical genus Sphaenorhynchus occur in South American rainforests of the Amazonia and Atlantic Forest. This genus is currently composed by 14 species, and with the exception of S. botocudo and S. bromelicola, all species have their advertisement call described. Thus, in this study we describe the advertisement call from these two remaining species and also the aggressive call of S. bromelicola. Using the call-centered terminology we standardized the nomenclature of the advertisement call parameters of the species of the S. platycephalus species group to fit this terminological approach. The advertisement call of both species is simple, pulsed, with decreasing frequency modulation and is emitted in groups or call series. The aggressive call is composed by a series of fast repeating notes and was emitted before the advertisement call. Additionally, as a novelty for the genus, when some males of S. botocudo were calling on a pond they exhibited an orange-brownish dorsal coloration with a red lateral stripe. Such coloration may be an indicative of reproductive color change to improve male conspicuousness in relation to the greenish leaf background.