BIOL 345 Lecture Notes - Lecture 14: Spotless Starling, Spermatogenesis, Endorphins
12 Nov 2017
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Flowers in defended territory have more nectar than flowers in undefended areas as more birds are feeding. Male sunbirds may or may not defend flower patches. If flower is undefended, other sunbirds use nectar. Less nectar available per flower average 1microliteer/day available. Sunbirds need to forage 8 hours per day to obtain sufficient nectar from undefended flowers. Expenditures: resting: 400 cal/h, foraging: 1000 cal/h, each hour spent resting rather than foraging saves. Defense is 3000 cal/h (2000 more than foraging). Undefended site of 1 microliter to defended site of 2 microliters leads to 8-4=4 hours rest gained = 4*600 = 2400 calories saved 2000 calories (defense) = Predict territoriality only when caloric gain is > 0. A) arbitrary consensus general rule to defer to the owner. Not due to any specific attribute of the owner. ), widely used in studies of conflict situations, use simple rules. Resource holding power greater a(cid:271)ilit(cid:455) to defe(cid:374)d (cid:894)(cid:271)od(cid:455) size, fit(cid:374)ess(cid:895).
