Abstract
Field observations and acoustic analyses have shown that suricate (Suricata suricatta) alarm calls vary in their acoustic structure depending on predator type. In this study, we tested whether receivers respond appropriately when hearing a call in the absence of a predator. Although the only way for suricates to escape from predators is to retreat to boltholes, responses to playbacks could be divided into distinct categories. The subjects responded differently to alarm calls given in response to aerial or terrestrial predators and to recruitment calls emitted in response to snakes and deposits on the ground. Suricates also showed rather distinct responses to low, medium and high urgency aerial calls. Differences in the responses were less obvious for different levels of urgency in the terrestrial and recruitment calls. Suricate receivers thus gain information about both the predator type and level of urgency from the acoustic structures of their calls.
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Selected References
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- Clutton-Brock T. H., Gaynor D., Kansky R., MacColl A. D., McIlrath G., Chadwick P., Brotherton P. N., O'Riain J. M., Manser M., Skinner J. D. Costs of cooperative behaviour in suricates (Suricata suricatta). Proc Biol Sci. 1998 Feb 7;265(1392):185–190. doi: 10.1098/rspb.1998.0281. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Manser M. B. The acoustic structure of suricates' alarm calls varies with predator type and the level of response urgency. Proc Biol Sci. 2001 Nov 22;268(1483):2315–2324. doi: 10.1098/rspb.2001.1773. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Marler P. Animal Communication Signals: We are beginning to understand how the structure of animal signals relates to the function they serve. Science. 1967 Aug 18;157(3790):769–774. doi: 10.1126/science.157.3790.769. [DOI] [PubMed] [Google Scholar]
- doi: 10.1098/rspb.1999.0737. [DOI] [PMC free article] [Google Scholar]