ANT211H5 Lecture Notes - Lecture 6: Semelparity And Iteroparity, Estrous Cycle, 6 Years
Document Summary
Sex roles & parental care: life history strategies. Can just focus on the concluding parts. How an organism allocates its efforts over its lifetime in order to maximize fitness. Allocation of resources (efforts and energy) throughout your life. Semelparity: expending one"s resources & dying in a single reproductive effort, common among plants (e. g. annuals) Iteroparity: repeated reproduction, return to pre-reproductive state. Itero: repeated reproductive episodes: females go back into a pre-reproductive state, go into estrous, and be available for additional reproductive events. Budget energy between reproductive effort & somatic effort (divided into growth & maintenance) Allocation of resources between body size & reproduction. How large an organism should grow before reproduction. Have to budget enough energy to reach survival, reproductive age, and sexual maturity. Always a cost-benefit analysis going on throughout the span of a life. A sex difference in the age of first reproduction (may be either sex that matures first)
