Nov 10 2009

Nov 10 2009 - Reproduction & Mating Systems II...

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Unformatted text preview: Reproduction & Mating Systems II (BIEB 132) 10 November 2009 (Hastings) Examples of Mating Systems 4. Resource defense polygyny with no care: bluehead wrasse (Warner, 1984) Species: Bluehead Wrasse Sexual pattern: Protogynous hermaphrodites (size advantage model applies) Mating behavior: Males court females; spawning rush launches eggs& sperm into water Male/Male Comp: Large males defend preferred spawning sites (down current edge of reef - eggs carried away from reef) Mate Choice: Females prefer spawning sites and mate with males defending them Parental Care: None Alt. Repro. Strat.: Yes: small males sneak spawn (these are called primary males who function first as males; secondary males are larger, territorial males that have changed sex from female to male Mating system: Polygynous (but where sneak spawning males are common, it can revert to a promiscuous mating system). promiscuous mating system)....
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Nov 10 2009 - Reproduction & Mating Systems II...

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