sex_selection[1] - Evolution: mate choice and sexual...

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Evolution: mate choice and sexual selection
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Sexual selection
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Mate choice, reproductive behavior, and sexual selection Classical ethology: patterns of courtship rituals Intrasexual conflict (typically males vs. males) antlers and armor alternative strategies: “sneakers" Intersexual conflict and female choice: ornate secondary sexual characters and the peacock’s tail
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Secondary sexual characteristics Classic problem in evolutionary biology: why the evolution of secondary sex. characters? Sexual dimorphism Traits (apparently) for male-male competition size, armor, weapons deer antlers, elephant seal size, etc.) “Flashy”, expensive displays in males: impress ♀ (or other ♂)? esp. color patterns, song repertoires, tails & streamers in birds colors and fancy tails in fish (e.g. guppies, swordtails)
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Male-male competition sexual dimorphism sometimes functions in ♂-♂ competition: size and strength, weapons ornaments can be signals
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sex_selection[1] - Evolution: mate choice and sexual...

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