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Fink - generations • When the female has reproductive...

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Fink: Competition & Reproduction 25/03/2008 15:09:00 Gametes to Ecology Competition Microscopic to ecology Social behavior & competition Structure of social systems reflect gamete competition Sperm: Males make more when… Females are likely to be promiscuous,  sperm compete with each other Stronger sperm & chemicals they secrete make them more  likely to make it to the egg first Splendid Fairy Wren-8 billion sperm/ejaculation Animals = very promiscuous  Yellow Dung Fly-testis size could evolve in 10 
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Unformatted text preview: generations • When the female has reproductive tract conditions that result in sperm mortality rates that are high Sperm compete with woman’s conditions ← High Sperm Count: • More sperm for long distances Coral-broadcast spawners • Sperm counts as high as 50 mil can be infertile • 180 mill is avg. ← ← Great Ape Sex & Society ← Orangutan-infertile during pregnancy & lactating period ← Gorilla-harem of females to have sex with ← ←...
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