ANT211H5 Lecture Notes - Lecture 5: Semelparity And Iteroparity, Menopause, Ovulation
Document Summary
Ant211 sex roles & parental care: life history strategies. How an organism allocates its efforts over its lifetime in order to maximize fitness. 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. 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. A sex difference in the age of first reproduction (may be either sex that matures first) R: a measure of the intrinsic rate of increase of the size of a population free from resource limitations. K: the maximum population that a species can maintain in a particular habitat i. e. carrying capacity of habitat. R selected species: adapted for natural selection to maximize population growth, prolific breeders will win the largest share of the gene pool.
