ANT211H5 Lecture Notes - Lecture 5: Ovulation, Alloparenting, Menarche
Document Summary
Lecture # 5 : life history strategy & evolution of human pair bonding. How an organism allocates its efforts over its lifetime to maximize fitness : trade offs with reproductive efforts. Budget energy between reproductive efforts and somatic efforts. Expend all one"s resources and die in a single reproductive effort: iteroparity. Return to pre-reproductive state after reproduction ex. K and r reproductive strategies: r strategy ex. Proliferic breeding (i. e many offspring at a time) emphasis on egg out put. Unstable environment (b/c its changing resource rich environment) well below carrying capacity of the habitat. Short developmental period, smaller body size, reproductive early, shorter lifespan. Minimal parental care: k strategy ex. Small # of offspring at a time. Stable environment at or near carrying of the habitat competition for resources (environment is not changing much, resource is limited) Longer developmental period, larger body size, reproduce late, longer lifespan. K species are more susceptible to extinction.
