Vocalizações e interações acústicas em Hyla raniceps (Anura, Hylidae) durante a atividade reprodutiva

Abstract

VOCALIZATIONS AND ACOUSTIC INTERACTIONS IN HYLA RANICEPS (ANURA, HYLIDAE) DURING THE BREEDING SEASON. The vocalizations of H. raniceps (Cope, 1826) and their functions are described, including an analysis of the influence of temperature, weight, or SVL (snout-vent length) of males on the acoustic parameters. The vocalizations were recorded in three areas in Fazenda Lagoa Grande, Municipality of Pontalina, State of Goiás, central Brazil. Males began their vocalizations just before sunset, extending them, in some cases, to dawn of the following day. The peak of activities happened between 21h and 23h. The height of calling sites varied plenty, being the position horizontal in about 50% of them. Males defended sites in different areas during consecutive nights. Rain and strong winds interrupted the calling activities. Males emitted three vocalizations: advertisement, territorial and distress calls. The advertisement call has pulsionated structures and it is the most common, being emitted in the presence/absence of females. Significant correlation was found between number of notes and air temperature, notes duration and both male weight and air temperature, calling rate and both male SVL or weight, and frequency and male weight.

Auto-ecologia de Hypsiboas albopunctatus (Anura, Hylidae) em área de Cerrado no sudeste do Brasil

“…GUIMARÃES et al, 2001;MENIN et al, 2004). Como outros hilíneos (HADDAD, 1991;BASTOS & HADDAD, 1996;GUIMARÃES & BASTOS, 2003), machos de H. albopunctatus adotam comportamento satélite e devem tentar interceptar fêmeas atraídas pelo macho em atividade vocal.…”

Biologia reprodutiva, tamanho e dieta de Hypsiboas cinerascens (Anura: Hylidae) em dois fragmentos florestais urbanos na Amazônia Central, Brasil

“…This pattern differs from that of Ecuadorian and Peruvian populations, in which reproduction has been reported to occur only in the rainy season (Crump 1974, Aichinger 1992. As observed by Haddad and Sawaya (2000) in Hypsiboas leucopygia, male-male aggressive behavior or territorial calls were not observed in H. cinerascens, in contrast to aggressive behavior reported for H. albopunctatus, H. bischoffi, H. goianus, H. leptolineatus, H. raniceps, and the H. boans Group (Martins and Moreira 1991, Martins et al 1998, Guimarães and Bastos 2003, Menin et al 2004, Toledo et al 2007, Reinke and Deiques 2010. The uniform distribution observed in the groups, the presence of a prepollical spine (Duellman 2005, pers.…”

Comportamento reprodutivo e seleção sexual em Dendropsophus bipunctatus (Spix, 1824) (Anura, Hylidae)

“…Durante a corte, os períodos de imobilidade seguidos de mudanças na posição do corpo e do sítio de vocalização dos machos podem ser interpretados como uma estratégia para aumentar as chances de atrair fêmeas (veja Juncá, 1998;Guimarães & Bastos, 2003 para comportamento semelhante). Uma vez que não se conhece a localização ou as rotas que as fêmeas estão realizando na poça, a emissão do sinal acústico em diferentes direções pode conferir maior sucesso em atraí-las.…”