Life on a limb: ecology of the tree agama (Acanthocercus a. atricollis) in southern Africa
نویسندگان
چکیده
منابع مشابه
Life on a limb: ecology of the tree agama (Acanthocercus a. atricollis) in southern Africa
One hundred and sixty-four museum specimens of the tree agama Acanthocercus a. atricollis were measured and dissected to examine sexual size dimorphism, reproduction and diet. Foraging mode and behaviour were also quanti®ed in a wild population to obtain a broader picture of their foraging ecology and to test the hypothesis that tree agamas are ambush foragers. Males and females did not differ ...
متن کاملPicking a tree: habitat use by the tree agama, Acanthocercus atricollis atricollis, in South Africa
INTRODUCTION Habitat selection by animals has been defined as the active choice of an area from a range of alternatives in the absence of constraints (Partridge 1978). In reality, no area is free of constraints and habitat selection depends on the physical structure of the environment, the physiology of the animal, food availability and protection from predators (Ward & Lubin, 1993). There are ...
متن کاملChemical compounds from the preanal gland secretions of the male tree agama (Acanthocercus atricollis) (fam. Agamidae).
Chemical signals have an important role in the reproductive behaviour of many lizards. However, the compounds secreted by their femoral or preanal glands, which may be used as sexual signals, are mainly known for lizard species within the Scleroglossa clade, whereas compounds in secretions of lizards within the Iguania clade are much less studied. Based on mass spectra, obtained by GC-MS, we fo...
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با توجه به تجزیه و تحلیل داده ها ما دریافتیم که سطح درامد و تعداد نمایندگیها باتقاضای بیمه عمر رابطه مستقیم دارند و نرخ بهره و بار تکفل با تقاضای بیمه عمر رابطه عکس دارند
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ژورنال
عنوان ژورنال: Journal of Zoology
سال: 2002
ISSN: 0952-8369,1469-7998
DOI: 10.1017/s0952836902001048