Comunicação acústica de longa distância de lobos-guará de vida livre ao longo das estações reprodutiva e não reprodutiva
The maned wolf is a solitary canid with nocturnal / crepuscular habits. Recording its vocalization for communication over long distances, called the roar-bark, proved to be an efficient monitoring mechanism. However, the functions of the roar-bark are still not completely clear and its emission thro...
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| Formato: | bachelorThesis |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/47260 |
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| Resumo: | The maned wolf is a solitary canid with nocturnal / crepuscular habits. Recording its vocalization for communication over long distances, called the roar-bark, proved to be an efficient monitoring mechanism. However, the functions of the roar-bark are still not completely clear and its emission throughout the year has not yet been quantified. The objective of this research is to compare the long-distance vocalizations of the maned wolf of the Serra da Canastra National Park in the reproductive and non-reproductive seasons using passive acoustic methods. For this goal we used between 8 and 13 autonomous recorders in the years of 2014, 2016 and 2017. We observed that in the non-reproductive season there were as many roar-bark sequences (0.3 roar-bark sequences per night per recorder) as in the period of highest vocal activity of the reproductive season, the mating period. As for the number of roar-barks per sequence (sequence size), we obtained an overall average of 10.88 ± 1.75 calls during most of the sampled period, observing only a drop in the month of July, the period of parturition. Comparing only interactions of two wolves (chorus), we have a high number at the beginning of the reproductive season (March, 0.046 sequences per night per recorder and April, 0.037) and again high in July (0.030). In the non-reproductive season, the chorus values were similar to the intermediate months of the reproductive season (pregnancy). Therefore, we can suggest that the maned wolf not only uses the roar-barks to find other individuals, but also its territorial function seems quite evident. |
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