The discriminating babbler meets the optimal diet hawk

  title={The discriminating babbler meets the optimal diet hawk},
  author={Thomas Getty},
  journal={Animal Behaviour},
  • T. Getty
  • Published 1 February 2002
  • Environmental Science
  • Animal Behaviour
Evidence suggests that some alarm calls function as pursuit-deterrent signals, informing the predator that it has been spotted and it might as well break off the hunt and stop wasting everyone’s time (Hasson 1991; Caro 1995). Bergstrom & Lachmann (2001) developed the watchful babbler game to identify the necessary conditions for alarm calls to function as a reliable signalling system between prey and predator. They derived two main results: (1) prey must accurately assess the risk of predation… 

Perceptual advertisement by the prey of stalking or ambushing predators.

Signaling Health versus Parasites

  • T. Getty
  • Biology
    The American Naturalist
  • 2002
It is shown that handicap signaling is a special case, not a general law that the authors can rely on to deduce relative costs across signalers of different quality at equilibrium, and that theory allows for the possibility that high‐quality big signalers have greater health and more parasites than low‐quality small signalers.

Evolution of aquatic insect behaviours across a gradient of disturbance predictability

This study demonstrates local adaptation in populations of an aquatic insect occupying sites along a natural gradient of disturbance predictability, the first demonstration that populations can evolve in response to differences in disturbance Predictability, and provides evidence that populationsCan adapt to among-stream differences in flow regime.

Life-history and behavioural adaptations to flow regime in aquatic insects.

  • D. Lytle
  • Biology, Environmental Science
  • 2008
Models of life-history and behavioural evolution illustrate how disturbance regime characteristics and population structure determine how populations might evolve in response to different drought regimes and for the effective management of dammed rivers and streams using ecological fl ows.

Adaptation to natural flow regimes.

  • D. LytleN. Poff
  • Environmental Science, Biology
    Trends in ecology & evolution
  • 2004

The Function of Behavior



Alarm calls as costly signals of antipredator vigilance: the watchful babbler game

A general game-theoretic model -- the Watchful Babbler game -- in which prey signal awareness to predators is developed, showing that signals can honestly reveal prey awareness if the prey's sense of predation risk accurately reflects the probability that the predator is present.

Pursuit-deterrent signals: communication between prey and predator.

  • O. Hasson
  • Environmental Science
    Trends in ecology & evolution
  • 1991

Mate selection by repeated inspection: more on pied flycatchers

The Dale & Slagsvold model of discrimination of male quality based on repeated sampling of territories by searching females was incorporated into the framework of signal detection theory and the relationship between search costs, search tactics and the resulting rates of discrimination errors was examined.

Handicap signalling: when fecundity and viability do not add up

  • T. Getty
  • Environmental Science
    Animal Behaviour
  • 1998
Critical tests of the handicap hypothesis should establish that signallers of different quality are on a rising fitness ridge because of different cost-benefit trade-offs, and whether receivers are maximizing their fitness requires additional experiments.

Discriminability and the Sigmoid Functional Response: How Optimal Foragers Could Stabilize Model-Mimic Complexes

  • T. Getty
  • Psychology
    The American Naturalist
  • 1985
Features of optimal signal detection theory are incorporated into traditional optimal diet theory to synthesize a more general theoretical framework that allows us to make predictions on the basis of constrained predator perceptual abilities.

Cost and conflict in animal signals and human language

It is shown that coincident interests are not a prerequisite for linguistic communication, and many of the results derived previously can be expected also under more realistic models of society.

On the Theory of Optimal Diets

  • H. Pulliam
  • Environmental Science
    The American Naturalist
  • 1974
Using techniques of stochastic theory, a new aproach to predicting optimal diets is developed for a mobile predator feeding on stationary prey, predicting that an animal feeding according to the dictates of the optimal diet should show no partial preferences.

The Maintenance of Phenotypic Plasticity as a Signal Detection Problem

  • T. Getty
  • Psychology
    The American Naturalist
  • 1996
It is shown that it is useful to think of this aspect of phenotypic plasticity as a signal detection process as well as the reaction norm in life-history theory and indicates how a receiver responds to the cues.

Mate selection-a selection for a handicap.

  • A. Zahavi
  • Psychology, Biology
    Journal of theoretical biology
  • 1975

Biological signals as handicaps.

  • A. Grafen
  • Psychology
    Journal of theoretical biology
  • 1990