Comportamento de vocalização de machos de Hypsiboas goianus (Lutz,1968) (Anura; Hylidae): variabilidade acústica ao longo de estações reprodutivas e resposta a indivíduos coespecíficos
During the reproductive season, the anurans crowd in sites where they can constitute vocalization assemblies. Different social contexts occur during these occasions, where the male individuals modify actively their behavior between attracting the female individuals and defending their territory and...
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| Formato: | tesis de maestría |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | Brasil |
| Recursos: | Universidade Federal de Goiás (UFG) |
| Repositorio: | Repositório Institucional da UFG |
| Idioma: | portugués |
| OAI Identifier: | oai:repositorio.bc.ufg.br:tede/7206 |
| Acesso em linha: | http://repositorio.bc.ufg.br/tede/handle/tede/7206 |
| Access Level: | acceso abierto |
| Palavra-chave: | Variação temporal Competição intraespecífica Playbacks Bioma cerrado Temporal variation Intraspecific competition Cerrado biome ZOOLOGIA::COMPORTAMENTO ANIMAL |
| Resumo: | During the reproductive season, the anurans crowd in sites where they can constitute vocalization assemblies. Different social contexts occur during these occasions, where the male individuals modify actively their behavior between attracting the female individuals and defending their territory and resources. Of huge importance for the social interaction of anurans, their vocalization acts as a tool for studies about sexual selection and aggressive interactions. Thereby, we aimed to evaluate the temporal variation of the advertisement and aggressive calls of Hypsiboas goianus over the course of 10 reproductive seasons that amount 18 years of time-lapse in a population and the acoustic answer of focal males in repeated interactions with conspecific competitors. The records were performed in Floresta Nacional de Silvânia, city of Silvânia, Goiás, Brazil. For temporal analysis, five advertisement calls and five aggressive calls – at most – of each individual were analyzed. Temporal parameters (duration of call, number and duration of pulses, call and pulse repetition rate) and a spectral parameter (dominant frequency) were extracted. To analyze the competitive interactions, the repetition rates of the advertisement, aggressive and total calls were considered as a response to the conspecific advertisement calls offered in 10 periods of playback. The acoustic parameters do not diverge inside the temporal lapse that was analyzed. The individuals modified their acoustic behavior with the simulation of the arrival of a new competitor during the first interactions with the playback (playback 1 e 2), afterward, the repetition taxes of calls were similar to those observed in the pre-playback period were, once again, emitted. |
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