caa a22 4500 477067212 CHVBK 20180405111415.0 cr unu---uuuuu 170330e19960101xx s 000 0 eng 10.1007/BF02458284 doi (NATIONALLICENCE)springer-10.1007/BF02458284 Ellner Stephen Biomathematics Graduate Program, Department of Statistics, North Carolina State University, 27695-8203, Raleigh, NC, U.S.A. aut Environmental fluctuations and the maintenance of genetic diversity in age or stage-structured populations [Elektronische Daten] [Stephen Ellner] The ability of random fluctuations in selection to maintain genetic diversity is greatly increased when generations overlap. This result has been derived previously using genetic models with very special assumptions about the population age structure. Here we explore its robustness in more realistic population models, with very general age structure or physiological structure. For a range of genetic models (haploid, diploid, single and multilocus) we find that the condition for maintaining genetic diversity generalizes almost without change. Genetic diversity is maintained by selection if a product of the form (generation overlap)×(selection intensity)×(variability in the selection regime) is sufficiently large, where the generation overlap is measured in units of Fisher's reproductive value. This conclusion is based on a local evolutionary stability analysis, which differs from the standard "protected polymorphism” criterion for the maintenance of genetic diversity. Simulation results match the predictions from the local stability analysis, but not those from the protected polymorphism criterion. The condition obtained here for maintaining genetic diversity requires fitness fluctuations that are substantial but well within the range observed in many studies of natural populations. Society for Mathematical Biology, 1996 Bulletin of Mathematical Biology Kluwer Academic Publishers 58/1(1996-01-01), 103-127 0092-8240 58:1<103 1996 58 11538 https://doi.org/10.1007/BF02458284 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02458284 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Ellner Stephen Biomathematics Graduate Program, Department of Statistics, North Carolina State University, 27695-8203, Raleigh, NC, U.S.A aut NATIONALLICENCE 773 0- Bulletin of Mathematical Biology Kluwer Academic Publishers 58/1(1996-01-01), 103-127 0092-8240 58:1<103 1996 58 11538 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer