7Polygyny – Male hierarchy “lekking”Open area grouse - Sage grouse,prairie chickens , manakins
8PolyandrySequential – phalaropesSimultaneous – spotted sandpiper and jacanas
9Promiscuity Forest grouse are solitary Ruffed Grouse, Blue grouse Hummingbirds
10The Ruff and multiple mating male strategies Satellite:HeterozygousNon territorialLonger lived11% copulationsTerritorialHomozygous recessiveShorter-lived89% of copulations if with a sattellite
11What leads to different strategies? Polygyny / Promiscuity and lekking?OSRHot spotsHot shotsFemale preferencePolyandry?Clutch Size Limitations?
12leads to increased sexual selection Increasing variance in reproductive successleads to increased sexual selectionPromiscuity > Polygyny = Polyandry (reversed SD) > Monogamy100% of malescontributinggenesSpecies
13Convergence (sort of) in African widowbirds Shabby epaulets!Run-away selection –Based on female preferencelinked to male traitWhat a tail!!