title: Age structure, environmental fluctuations, and hermaphroditic sex allocation.
abstract: This paper studies sex allocation in an age-structured population of hermaphrodites living in a temporally fluctuating environment. The general condition for the evolutionary stable state (ESS) of allocation is derived for density-independent dynamics. This condition is used to determine the effect on the deterministic ESS of a dependence of survival rates on allocation. It is also used to identify the special conditions under which a stochastic ESS is given by a product rule and show how demographic structure and the correlation structure of vital rates determines the stochastic ESS.
authors.affiliation: Stanford University, CA 94305.
authors.forename: S
authors.initials: S
authors.lastname: Tuljapurkar
mesh_terms: D005075:Biological Evolution; D012734:Disorders of Sex Development; D008957:Models, Genetic; D012732:Sex Determination Analysis; D013269:Stochastic Processes; D013997:Time Factors