Download Behavioural Adaptations of Desert Animals by Prof. Dr. Giovanni Costa (auth.) PDF

By Prof. Dr. Giovanni Costa (auth.)

After a quick survey of biotopic and vegetational positive factors and an account of the most teams of wilderness animals, the main strange styles of the behaviour of the xerophilous fauna are tested. the significance of the thermohygric legislation and self-protective and locomotor mechanisms to the survival of arid-adapted animals is emphasised and numerous variations within the alimentary, reproductive and social spheres are analyzed.
The transparent and fluent remedy will wake up the curiosity of the analyzing public, from the novice naturalists to analyze scientists.

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1993, 1995). Spiders have predaceous habits, feeding on insects and other arthropods. Occasionally, they attack small vertebrates. Their bite is generally harmless to Man, but the poison may sometimes be dangerous to children or to people in poor health. For example, the bite of the notorious black widow (Latrodectus mactans) may be fatal to individuals suffering from hypertension or coronary heart disease. Mites are a conspicuous component of the desert soil fauna. They are common in the hot deserts (Wallwork 1982), but some species may also live in the Antarctic (Wallwork 1976) and Arctic (Chernov et al.

1977), North America (Hoff 1959; Allred 1965; Weygoldt 1969) and South America (Deboutteville and Rapoport 1968). Very little is known of their biology and their adaptations to desert life. 9 Crustaceans Crustaceans are predominantly aquatic mandibulate arthropods. Nevertheless, various groups of this class live in arid and semi-arid environments. Some occur in temporary desert waters; they belong to the phyllopods which include essentially anostracans (fairy shrimps), conchostracans (clam shrimps) and notostracans (tadpole shrimps).

Among the Palaeognata, cursorial but flightless birds, ostriches (Struthio Main Animal Groups 37 Fig. 14. Ostrich (Struthio camelus) on the look out camelus) (Fig. 5 m in height) and their behaviour; they are widespread in the arid and semi-arid regions of Africa, Arabia and Syria. The smaller South American rhea (also called nandu) Rhea americana and the Australian emu Dromaius novae-hollandiae present almost similar morphological and ethological features, but they are confined to steppe environments.

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