By N. B. Davies J. R. Krebs

ISBN-10: 0632035463

ISBN-13: 9780632035465

The 3rd version of this profitable textbook appears to be like back on the effect of typical choice on habit - an animal's fight to outlive by way of exploiting assets, keeping off predators, and maximizing reproductive luck. during this version, new examples are brought all through, many illustrated with complete colour images. furthermore, very important new themes are extra together with the newest suggestions of comparative research, the speculation and alertness of DNA fingerprinting concepts, wide new dialogue on brood parasite/host coevolution, the most recent principles on sexual choice in terms of sickness resistance, and a brand new part at the intentionality of verbal exchange. Written within the lucid variety for which those authors are well known, the textual content is more suitable via boxed sections illustrating very important suggestions and new marginal notes that advisor the reader in the course of the textual content. This e-book should be crucial interpreting for college students taking classes in behavioral ecology.The prime introductory textual content from the 2 such a lot in demand staff within the box. moment color within the textual content. New part of 4 color plates. Boxed sections to ilustrate tricky and demanding issues. New better structure with marginal notes to steer the reader during the textual content. chosen additional examining on the finish of every bankruptcy.

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Extra info for An Introduction to Behavioural Ecology (Third Edition)

Example text

For example, group living may occur in species which experience particular feeding conditions. In this chapter we will discuss in detail these last two methods for investigating adaptation. The comparative approach The idea of comparison lies at the heart of most hypotheses about adaptation. It is the comparative study of different species which gives us a feel for the range of strategies that animals adopt in nature. When we ask functional questions about the behaviour of particular species we are usually aslung why it is different from other species.

When we ask functional questions about the behaviour of particular species we are usually aslung why it is different from other species. Why does species A live in groups compared with species B which is solitary? Why do males of species B mate monogamously compared with males of species A which are polygynous, and so on? A powerful method for studying adaptation is to compare groups of related species and attempt to find out exactly how differences in their behaviour reflect differences in ecology.

Instead of broad scale comparisons between species, the emphasis will be on the behaviour of individuals of the same species and analysing their behaviour in terms of costs and benefits. The idea of trying to measure costs and benefits grew out of Niko Tinbergen's experimental approach to studying the survival value of behaviour. For example, Tinbergen observed that in a colony of black-headed gulls (Larus ridibundus) nesting on sand dunes in north-western England, incubating parents always pick up the broken eggshell after a chick has hatched and carry it away from the nest (Fig.

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An Introduction to Behavioural Ecology (Third Edition) by N. B. Davies J. R. Krebs

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