The information that receivers extract from alarm calls in suricates

M B Manser, M B Bell, L B Fletcher

Research output: Contribution to journalArticlepeer-review

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,then 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 loin, 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.

Original languageEnglish
Pages (from-to)2485-2491
Number of pages7
JournalProceedings of the Royal Society B-Biological Sciences
Volume268
Issue number1484
DOIs
Publication statusPublished - 7 Dec 2001

Keywords

  • alarm calls
  • functionally referential
  • level of response urgency
  • receivers suricates

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