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Anti-predator behaviour of black-fronted titi monkeys (Callicebus nigrifrons)
| Content Provider | Semantic Scholar |
|---|---|
| Author | Ca¨sar, Cristiane |
| Copyright Year | 2012 |
| Abstract | In this chapter I present the vocal repertoire of black-fronted titi monkeys (Callicebus nigrifrons) during encounters with live and with stuffed predator species. Using visual and auditory discrimination I identified 11 calls types (5 simple and 6 composite), which differed strikingly in fundamental frequency (high, medium, low), modulation (e.g. upsweep, downsweep and flat) and amplitude (quiet, loud). Some calls can be produced singly or in sequences, while others are only produced in sequences of one or more call types that seem to function as communicative units. The vocal repertoire presented here is not exhaustive, and represents only the call types and variants given in predator contexts. Based on description and spectrograms, I could tentatively identify some of the vocal categories described in earlier studies on an Amazon species of titi monkey (Callicebus cupreus). More detailed analyses will be required to compare calls produced by these two disjunctive species. The main goal of this chapter was to present a first summary description of the main calls. More detailed descriptions of some of the quiet high-pitched calls produced when detecting predators will be presented in chapter 4. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://research-repository.st-andrews.ac.uk/bitstream/handle/10023/2575/CristianeC%C3%A4sarPhDThesis.pdf?isAllowed=y&sequence=3 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
