The effective size of a subdivided population.

摘要: This paper derives the long-term effective size, Ne, for a general model of population subdivision, allowing differential deme fitness, variable emigration and immigration rates, extinction, colonization, correlations across generations in these processes. We show that various measures Ne are equivalent. The size metapopulation can be expressed variety ways. At demographic equilibrium, derived from demography by combining information about ultimate contribution each to future genetic make-up Wright's FST's. is given = 1/(1 + var (upsilon) ((1 - FST)/Nin), where n number demes, theta i eventual individuals whole (scaled such sigma n), denotes an average weighted i. formula applied catastrophic extinction (where sites either empty or at carrying capacity) with explicit dynamics, caused stochasticity chaos. Contrary expectation standard island model, usual effect subdivision decrease relative panmictic living on same resource.