Environmental signals

4/29/02


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Table of Contents

Environmental signals

Give Game

Why signal food location?

Types of location signals

Ravens recruit to carcasses

Cliff swallow recruitment calls

Food signalling by osprey

Rhesus macaque food calls

Chimpanzee pant-hoots

Mole rats recruit to roots

Food recruitment in ants

Food recruitment in honey bees: dance angle indicates direction

Dance duration indicates distance

Dance divergence indicates patch size

Advertisement distance is constrained by dance duration

Bee dialects reflect foraging distances

Azimuth encoding in bee dances

Summary of food-associated signals

Predator alarm signals

Private alarm calls

Benefits of alarm calls

Ground squirrel alarm calls

Alarm calls do not coordinate movements

Alarm calls differ by age and sex

Alarm calls and kinship

Referential signalling

Vervet alarm calls

Alarm calls refer to predators

Development of vervet alarm calls

Vervet calls, relatedness and dominance

PPT Slide

Meerkat alarm calls signal predator class and urgency

Intertrophic level signalling

Predator notification displays

Aposemitism

Author: Jerry Wilkinson

Email: gw10@umail.umd.edu

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