منابع مشابه
Animal Ecology
Every animal is (1,2) closely linked with a number of other animals living round it, and these relations in an animal community are largely food relations. (3) Man himself is in the centre of such an animal community, as is shown by his relations to plague-carrying rats and (4) to malaria or the diseases of his domestic animals, e.g. liver-rot in sheep. (5) The dependence of man upon other anim...
متن کاملUse of Chromatography in Animal Ecology
The analysis of wild collected feces is a fundamental ecological tool, applied in studies about population size, diet analysis and to identify the presence of a species in a certain area. Moreover, it is useful when it is necessary to monitor those species which are elusive, difficult to observe, threatened, nocturnal or sympatric, or exist in low densities. The identification can be done by ex...
متن کاملAlternative animal models with maternal effects and foster dams.
Effects of foster dams can be included in genetic evaluations using animal models with maternal effects in several ways. The alternatives discussed involve minor changes in computing strategies from strategies used with reduced animal models that predict breeding values for direct and maternal effects. The easiest alternative is to assign foster dams to groups by breed and time period and add e...
متن کاملAlternative Animal Models with Maternal Effects and Foster Dams
Effects of foster dams can be included in genetic evaluations using animal models with maternal effects in several ways. The alternatives discussed involve minor changes in computing strategies from strategies used with reduced animal models that predict breeding values for direct and maternal effects. The easiest alternative is to assign foster dams to groups by breed and time period and add e...
متن کاملDecision ecology: foraging and the ecology of animal decision making.
In this article, I review the approach taken by behavioral ecologists to the study of animal foraging behavior and explore connections with general analyses of decision making. I use the example of patch exploitation decisions in this article in order to develop several key points about the properties of naturally occurring foraging decisions. First, I argue that experimental preparations based...
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ژورنال
عنوان ژورنال: American Zoologist
سال: 1996
ISSN: 0003-1569
DOI: 10.1093/icb/36.2.83