lecture 19 - Mating, Courtship Behaviors and Reproductive...

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Mating, Courtship Behaviors and Reproductive Isolation
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Mating Strategies Adaptations Intersexual Intrasexual Male systems Female systems
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Intrasexual Selection Divided into two categories: Precopulatory access to potential mates Postcopulatory competition for access to eggs
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Intrasexual Selection Precopulatory access to potential mates Skill in mate location; get there first Better sensory capability Early emergence Production of effective mate-attracting signals Aggressive defense of mates and territories Capacity to avoid damaging interactions with rivals
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Mate Location by Manduca sexta
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Male Orchid Bees in a lek Collect fragrances from orchids Fragrances advertise fitness to females and convince them to mate
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Male dragonfly defending a territory while waiting for a female
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Postcopulatory competition for access to eggs Mate concealment Mate guarding Mate takeover
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block other males from mating with her
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lecture 19 - Mating, Courtship Behaviors and Reproductive...

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