BIOL10210 Lecture Notes - Lecture 16: Sexual Dimorphism, Live Fast, Die Young (Film), Mate Choice
Document Summary
Life history is compromised of a collection of traits: Number, size, and sex ratio of offspring. Length of post-reproductive life rare vast majority of organisms do not live past reproductive life just us and toothed whales live past reproductive life. If chances of survival are low, where should you invest the most energy? (cid:862)li(cid:448)e fast, die (cid:455)ou(cid:374)g(cid:863) strateg(cid:455: once reproductive age is reached devote all energy to reproduction instead of survival, common prey. Bunnies, cats: r-selected species, simple cognitive ability, believe resources are unlimited, very sexual, sexual maturity early in life, high number of offspring, little investment in offspring, not territorial, quantity. If chances of survival are high, where should you invest the most energy? (cid:862)li(cid:448)e lo(cid:374)g a(cid:374)d prosper(cid:863) strateg(cid:455) (fe(cid:449) (cid:455)ou(cid:374)g spa(cid:272)e out: long gestation, immaturity stage, predators ex. Elephants, humans: k-selected species, complex cognitive ability, limited resources must manage, social monogamy, sexual maturity is later in life, low number of offspring, high investment in offspring, parental, territorial, quality.
