Animal Behavior: An Evolutionary Approach |
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Page 487
... breeding for the first time with those that are helping rear additional brothers and sisters , it would appear that breeding is by far the superior option ( Table 6 ) . A novice breeder , even without any helpers , can produce an ...
... breeding for the first time with those that are helping rear additional brothers and sisters , it would appear that breeding is by far the superior option ( Table 6 ) . A novice breeder , even without any helpers , can produce an ...
Page 490
... breeding pair ; some members of a flock are close relatives of the pair , 100 80 60 Percentage of breeding groups containing a helper 40 58 20 • 57 5 . 56 • 60 • 59 очн 0 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Available females per male 11 Helping ...
... breeding pair ; some members of a flock are close relatives of the pair , 100 80 60 Percentage of breeding groups containing a helper 40 58 20 • 57 5 . 56 • 60 • 59 очн 0 0.4 0.5 0.6 0.7 0.8 0.9 1.0 Available females per male 11 Helping ...
Page 491
... breeding band that has been recently reduced in number [ 423 ] . Disasters strike green wood- hoopoe flocks regularly . Breeding females , in particular , are often killed because they nest in holes in trees and have predators that ...
... breeding band that has been recently reduced in number [ 423 ] . Disasters strike green wood- hoopoe flocks regularly . Breeding females , in particular , are often killed because they nest in holes in trees and have predators that ...
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