Animal Behavior: An Evolutionary Approach |
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Page 47
... snakes find something else to eat , primarily fish and frogs , which they capture while swimming in lakes and streams . But will snakes from inland locations eat slugs if they are given the opportunity ? One could present slugs to adult ...
... snakes find something else to eat , primarily fish and frogs , which they capture while swimming in lakes and streams . But will snakes from inland locations eat slugs if they are given the opportunity ? One could present slugs to adult ...
Page 48
... snake's cage . Naive young coastal snakes usually ate all the slug hors d'oeuvres they received ; inland snakes usually did not ( Figure 13 ) . In both populations , slug - refusing snakes did not even make contact with the slug food ...
... snake's cage . Naive young coastal snakes usually ate all the slug hors d'oeuvres they received ; inland snakes usually did not ( Figure 13 ) . In both populations , slug - refusing snakes did not even make contact with the slug food ...
Page 50
... snakes have the allele or alleles that enable them to sense slugs and attack them . In contrast , snakes of the inland population have alter- native alleles that result in a low rate of tongue flicking and a low attack probability when ...
... snakes have the allele or alleles that enable them to sense slugs and attack them . In contrast , snakes of the inland population have alter- native alleles that result in a low rate of tongue flicking and a low attack probability when ...
Contents
NATURAL SELECTION | 5 |
Alternative Hypotheses | 11 |
Experimental Tests of Evolutionary Predictions | 17 |
Copyright | |
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ability activity adaptive adult allele animals anole ants aphids attack auditory bank swallows bees Behavioral Ecology benefits biological birds black-headed gull brain breeding burrow butterfly Chapter colony Color copulate courtship cues cycle damselfly defense detect developmental dominant ecological effects eggs energy environment environmental evolution evolutionary evolved example experience feeding female's fertilize Figure flies foraging gametes ganglion genes genotype gulls habitat honeybee hormonal human hypothesis inclusive fitness individuals infanticide insects interactions kin selection kittiwake larvae living male's males and females mate mechanisms moth mutant nervous system nest neural neurons offspring parental pattern Photograph physiological polygyny population potential predators prediction prey produce progeny rats receptive receptors relatively reproductive success response result selection sensory sexual sexual reproduction sexual selection signals slug snakes social Sociobiology song sounds species sperm stimulation survival territory testosterone toad traits visual wasp white-crowned sparrow wings workers young