Animal Behavior: An Evolutionary Approach |
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Page 56
... hormonal signals of the opposite sex . In fact , if one examines certain regions of adult rat brains , one finds structural differences between males and females . For example , in the preoptic region of the brain , there are marked ...
... hormonal signals of the opposite sex . In fact , if one examines certain regions of adult rat brains , one finds structural differences between males and females . For example , in the preoptic region of the brain , there are marked ...
Page 60
... hormonal changes that facilitate the maintenance of maternal care . The role that hormones play in the development of female retrieval behavior has been studied by removing the ovaries from immature rats [ 612 ] . If they are later ...
... hormonal changes that facilitate the maintenance of maternal care . The role that hormones play in the development of female retrieval behavior has been studied by removing the ovaries from immature rats [ 612 ] . If they are later ...
Page 171
... hormonal levels fell , the slug would usually have moved away from its clutch . Thus , the slug is similar to the anole in that its cycle of egg laying is monitored internally via hormonal changes that lead to correlated adjustments in ...
... hormonal levels fell , the slug would usually have moved away from its clutch . Thus , the slug is similar to the anole in that its cycle of egg laying is monitored internally via hormonal changes that lead to correlated adjustments in ...
Contents
NATURAL SELECTION | 5 |
Alternative Hypotheses | 11 |
Experimental Tests of Evolutionary Predictions | 17 |
Copyright | |
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ability activity adaptive adult alarm calls allele animal behavior anole ants aphids bees Behavioral Ecology benefits biological birds black-headed gull bluegill brain breeding butterfly cells Chapter colony Color competition cooperation copulate courtship cues cycle damselfly defense detect developmental display dominant effects eggs environment evolution evolutionary evolved example experience feeding female's fertilize Figure flies foraging gametes genes genetic genotype gulls habitat hive honeybee hormonal human hypothesis inclusive fitness individuals infanticide insects kin selection kittiwake larvae living male's males and females mate mechanisms moth nectar nervous system nest neural neurons offspring parental pattern pheromone Photograph physiological polyandry polygyny population potential predators prediction prey produce progeny rats reared receptive receptors relatively reproductive success response Science sensory sexual selection signals snakes social Sociobiology song sounds species sperm stimulation strategy survival territory testosterone toad traits wasp white-crowned sparrow wings workers young