Animal vigilance : monitoring predators and competitors by Guy Beauchamp PDF

By Guy Beauchamp

ISBN-10: 0128019832

ISBN-13: 9780128019832

ISBN-10: 0128019948

ISBN-13: 9780128019948

Animal Vigilance builds at the author’s past e-book with educational Press (Social Predation: How workforce residing advantages Predators and Prey) by way of constructing a number of different topics together with the advance and mechanisms underlying vigilance, in addition to constructing extra absolutely the evolution and serve as of vigilance.

Animal vigilance has been on the leading edge of study on animal habit for a few years, yet no accomplished overview of this subject has existed. scholars of animal habit have eager about many points of animal vigilance, from versions of its adaptive price to empirical learn within the laboratory and within the box. The colossal literature on vigilance is extensively dispersed with usually little touch among versions and empirical paintings and among researchers targeting assorted taxa equivalent to birds and mammals. Animal Vigilance fills this hole within the on hand material.

  • Tackles vigilance from all angles, theoretical and empirical, whereas together with the broadest variety of species to underscore unifying themes
  • Discusses numerous more recent advancements within the quarter, similar to vigilance copying and impact of nutrition density
  • Highlights contemporary demanding situations to assumptions of conventional versions of vigilance, corresponding to the belief that vigilance is self sustaining between crew individuals, that's reviewed in the course of dialogue of synchronization and coordination of vigilance in a group
  • Written through a best specialist in animal vigilance

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Extra info for Animal vigilance : monitoring predators and competitors

Sample text

In the vigilant condition, virtual competitors only displayed the head-up posture. In the non-vigilant condition, by contrast, competitors always maintained the head-down posture. Errors bars are not shown for clarity. (Adapted from Rieucau and Giraldeau (2009)). mechanism that will be covered in Chapter 7. Despite the admittedly limited support for an effect of scramble competition on vigilance, this mechanism is important in reminding us that competition can have varied and often drastically different effects on vigilance depending on the nature of interactions amongst competitors.

Experiments of this kind are much needed to relate predator detection to body postures. Another approach relates vigilance at the time of attack to the probability of escaping the approaching predator. The reasoning here is that if vigilance allows early detection, vigilant individuals should escape more quickly and be caught less often. Two mechanisms could explain why vigilant individuals survive better. First, predators might initially target less vigilant individuals (FitzGibbon, 1989). Second, the slow escape of less vigilant foragers might increase their chances of being captured.

This detection advantage within the group acts at a much shorter range than the typical distance at which a predator is detected, making a threat signal that much more conspicuous to the vigilant forager. At any given time, the odds that one individual in the group is vigilant should increase with group size, as long as individuals monitor their surroundings independently from one another. When this is true, the ability to detect a predator at the group level should increase with group size. The earliest research on this hypothesis was performed with birds.

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Animal vigilance : monitoring predators and competitors by Guy Beauchamp


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