Biology 240 — Exam 3 (Animal Reproduction & Life History)
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15 Terms
Parental Care does..?
Increases offspring survival
Chick Gape Color
Brighter color = more feeding
Begging & Relatedness
More intense begging = more related
Cuckoos
Lay eggs in other birds' nests; egg mimicry
Cooperative Breeding
Helpers (often siblings) care for young
Extra-Pair Copulations
Mating outside pair bond
Two-fold Cost
Sex halves reproductive output
Lottery Ticket Hypothesis
Variation = better odds
Tangled Bank Hypothesis
Avoids sibling competition
Red Queen Hypothesis
Keep Ahead of Parasites
Intersexual Selection
individuals of one sex are choosy in selecting their mates from the other sex
Intrasexual Selection
competition among individuals of one sex (often males) for mates of the opposite sex
Red-back Spiders
Suicide = better fertilization success
Sex Ratios
males:females - frequency-dependent selection
Senescence
Gradual aging and decline in reproduction
Note 
Flashcards (87)