Behaviour 2019
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Do maned wolves sound the same across non-reproductive, mating, gestational, and parental care periods?
Luane S. Ferreira1, Edvaldo Neto1, Thiago Augusto1, Victor Sábato1, Júlio Baumgarten2, Flávio G. Rodrigues3, Renata S. Sousa-Lima1. 1Universidade Federal do Rio Grande do Norte, Natal, Rio Grande do Norte, Brazil; 2Universidade Estadual de Santa Cruz, Ilhéus, Bahia, Brazil; 3Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil

Maned wolves are solitary canids that use chemical and acoustic signals to announce/defend resources and maintain spacing, especially in relation to same-sex conspecifics. We used a grid of autonomous audio recorders at the Serra da Canastra National Park (Brazil) to investigate if their long-range roar-barks acoustic features varied across the year. We expected vocal sequences during the mating period to be longer (more and longer roar-barks), lower in frequency, and to present more abrupt noisy-to-tonal changes, since these sounds features are attributed to high motivation contexts. Unexpectedly, there was as many roar-bark sequences in the non-reproductive period as in the mating period, although calling decreased during gestational and parental care periods. However, we found no significant differences in call features across periods. Variation in the measured features was high, suggesting that those parameters may be influenced by other factors not included in our study. Maned wolves may experience high arousal from intra- and inter-specific threats throughout the year. Our result also provide evidence that noisy-to-tonal changes are not specific to reproductive contexts.