BIO 370 Lecture Notes - Lecture 5: Dynastinae, Sperm Competition, Selective Breeding
Document Summary
Bower bird (flame colored bird): males build bower as part of mating display. Female flies into the tunnel to watch male dance, decies whether to move forward or not: selection caused by competition for mates b/w individuals of the same sex. Males, not females, typically increase fitness if mate more times bc has more children vs if females mate more, would only be pregnant once. Selection strongly favors males, but not females, that get more matings: exceptions: sex role reversals (where females strongly. Seahorses, females have to court males to get more mating. Males have pouch, when mate, females deposit egg in male pouch who then carries the babies. When male pouch is filled (cid:272)a(cid:374)"t (cid:373)ake a(cid:374)(cid:455)(cid:373)ore, or (cid:449)he(cid:374) fe(cid:373)ales deposited eggs, (cid:272)a(cid:374) go deposit more: ex. Painted snipe, females have to make nest to convince males to mate with her, drops off her egg there.
