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Hyperphagia (ecology)
In behavioral ecology, hyperphagia is a short-term increase in Eating#Other_animals, food intake and metabolization in response to changing environmental conditions. It is most prominent in a number of migratory bird, migratory bird species. Hyperphagia occurs when fat deposits need to be built up over the course of a few days or weeks, for example in wintering birds that are preparing to start on their bird migration, spring migration, or when feeding habitat conditions improve for only a short duration. In preparation for hibernation Bears Brown bear, Brown bears can double their weight from spring to autumn, gaining up to of fat. These deposits are used to survive their winter hibernation. During summer and autumn, brown bears have been observed consuming large amounts of insects, roots and bulbs, salmon, and other food sources depending on their location and the availability of food. During the autumn months, American brown bear, American brown bears consume a large am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Behavioral Ecology
Behavioral ecology, also spelled behavioural ecology, is the study of the evolutionary basis for ethology, animal behavior due to ecology, ecological pressures. Behavioral ecology emerged from ethology after Niko Tinbergen outlined Tinbergen's four questions, four questions to address when studying animal behaviors: what are the proximate causes, ontogeny, Adaption, survival value, and phylogeny of a behavior? If an organism has a trait that provides a selective advantage (i.e., has adaptive significance) in its environment, then natural selection favors it. Adaptive significance refers to the expression of a trait that affects fitness, measured by an individual's reproductive success. Adaptive traits are those that produce more copies of the individual's genes in future generations. Maladaptive traits are those that leave fewer. For example, if a bird that can call more loudly attracts more mates, then a loud call is an adaptive trait for that species because a louder bird mates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
