Download Animal Behaviour: Ecology and Evolution by C. J. Barnard (auth.) PDF

By C. J. Barnard (auth.)

The learn of animal behaviour, rather from evolutionary and ecological viewpoints, has been one of many significant becoming issues in biology over the past 10 to fifteen years. The measure of quantitative rigour in theoretical, observational and experimental techniques to behavior has elevated dramatically. As extra of the swiftly growing to be examine literature be comes a easy requirement for college kids analyzing animal behaviour at undergraduate point, there's a want for a comfortably understandable textual content, masking all significant points of behaviour examine, to accom­ pany their classes. This publication, in accordance with my first, moment and 3rd yr less than­ graduate lectures on the collage of No ttingham , is designed to fulfill that requirement. The publication starts off with a dialogue of the physiological and anatomical bases of behaviour: the connection among fearful approach constitution and serve as and behavior; hormonal results on behaviour; organic c1ocks; perceptual mechanisms; and stimulus filtering. This results in a attention in bankruptcy 2 of the way the animal integrates inner and exterior stimuli in making judgements approximately its behaviour and how normal choice has formed decision-making techniques and the supplier of motivation. the 1st chapters accordingly care for the instigation or causation of behaviour in the animal. Chapters three and four care for developmental facets of behaviour. bankruptcy three discusses behaviour genetics, inc1uding the connection among particular genes and behavior, the heritability of behaviour styles, the positioning of gene motion within the physique and the evolutionary outcomes of a genetic foundation to behaviour.

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Extra resources for Animal Behaviour: Ecology and Evolution

Example text

In the same way, 'hardware', neural explanations of behaviour, are unlikely to help us understand its functional significance. To do that we need 'software' models of behaviour. In the chapters which follow we shall explore a number of such models and show how they have been useful in quantifying the principles underlying behaviour. 2 Honnones and Behaviour Operating alongside the nervous system is a specialised group of organs called endocrine glands. These provide another means of communication within the animal's body, this time via hormones.

On the other hand, oestrogen produces normal female behaviour in females but both male and female behaviour in males. The contrast between birds and marnmals in this respect is interesting. It appears to depend on which sex is homogametic (Le. has two XX chromosomes instead of XY). In mammals this is the female, in birds the male. In contrast to marnmals, the development of sexuality without hormonal influence in birds is thus masculine. Seasonal effects are also important. In red deer (Cervus elephus), the administration of testosterone in winter brings about full rutting behaviour.

Their simple ears are geared almost entirely to detecting approaching bats. The moths possess a pair of ears, one either side of the thorax. Each ear consists of just two sensory neurons connected to the tympanum. One neuron is sensitive to low-intensity sound, the other to highintensity sound. The 'low-intensity' (LI) neuron also responds more to intermittent rather than continuous sound. The two neurons, however, do not discriminate between different frequencies of sound, merely its intensity and pattern of emission.

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