Alarm calls elicit predator-specific physiological responses
نویسندگان
چکیده
منابع مشابه
Alarm calls elicit predator-specific physiological responses.
Glucocorticoids regulate glucose concentrations and responses to unpredictable events, while also modulating cognition. Juvenile Belding's ground squirrels (Urocitellus beldingi) learn to respond to whistle and trill alarm calls, warning of aerial and terrestrial predators, respectively, shortly after emerging from natal burrows at one month of age. Alarm calls can cause physiological reactions...
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Mobbing calls are produced by many avian species as part of a defence strategy against predators. However, as most studies have described small prey species, little is known of mobbing by species large enough to inflict harm on the predator when working cooperatively. We investigated the mobbing calls of the Australian magpie (Gymnorhina tibicen tibicen), a large, territorial songbird known to ...
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Although Darwin hypothesized that animal signals were primarily manifestations of an individual's motivation or level of arousal [1], research over the past 20 years has shown that some animal vocalizations – particularly alarm calls – can function to designate specific objects or events in the external world [2–5]. Such predator-specific alarm calls have been termed 'functionally referential',...
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Animals commonly vocalize when threatened by a predator. These signals, usually termed alarm calls (from old Italian all arme ‘to arms’ on the approach of an enemy), have continued to bewilder and fascinate for a number of reasons, the first of which is mainly practical. In animal research, it is often difficult to break down the continuous behavioral stream into discrete and meaningful units, ...
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ژورنال
عنوان ژورنال: Biology Letters
سال: 2010
ISSN: 1744-9561,1744-957X
DOI: 10.1098/rsbl.2010.0118