General Ecology_Mahaffy_Date_032310

General Ecology_Mahaffy_Date_032310 - Life history patterns...

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Life history patterns Mating systems Monogamous Mating pair remains together over time Lifetime Swan Seasonal Stay together for the breeding season Serial Stay together till the kids are gone Every monogamous system studied shows at least some cheating Secondary sexual characteristics Monomorphic Males and females look alike Example: swans Permanently dimorphic Mature sexes distinguishable Example: mammals Seasonally dimorphic Mature sexes distinguishable only at spawning time Example: mallards and goldfinches Polymorphic Common in fish Can have three morphs Female Territorial male Non-territorial male Behavioral adaptations for reproduction Female choice Sexy-son hypothesis Runaway sexual selection Female picks one characteristic to decide mating Peacocks Handicap principle If he can survive with a handicap, he must have good genes Courtship Important things include: Color Size Movements Life history strategies
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This note was uploaded on 08/29/2010 for the course BISC 302 taught by Professor Walsh during the Spring '08 term at University of Delaware.

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General Ecology_Mahaffy_Date_032310 - Life history patterns...

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