scholarly journals Life-history traits and effective population size in species with overlapping generations revisited: the importance of adult mortality

Heredity ◽  
2016 ◽  
Vol 117 (4) ◽  
pp. 241-250 ◽  
Author(s):  
R S Waples
Keyword(s):  
Life History ◽  
Population Size ◽  
Effective Population Size ◽  
Overlapping Generations ◽  
Life History Traits ◽  
Adult Mortality ◽  
Effective Population

scholarly journals Revealing life-history traits by contrasting genetic estimations with predictions of effective population size

2018 ◽  
Vol 32 (4) ◽  
pp. 817-827 ◽  
Author(s):  
Gili Greenbaum ◽  
Sharon Renan ◽  
Alan R. Templeton ◽  
Amos Bouskila ◽  
David Saltz ◽  
...  
Keyword(s):  
Life History ◽  
Population Size ◽  
Effective Population Size ◽  
Life History Traits ◽  
Effective Population

scholarly journals Simple life-history traits explain key effective population size ratios across diverse taxa

2013 ◽  
Vol 280 (1768) ◽  
pp. 20131339 ◽  
Author(s):  
Robin S. Waples ◽  
Gordon Luikart ◽  
James R. Faulkner ◽  
David A. Tallmon
Keyword(s):  
Life History ◽  
Population Size ◽  
Effective Population Size ◽  
Life History Traits ◽  
Vital Rates ◽  
Effective Population ◽  
Adult Lifespan ◽  
Census Size ◽  
The Rich ◽  
And Migration

Effective population size ( N e ) controls both the rate of random genetic drift and the effectiveness of selection and migration, but it is difficult to estimate in nature. In particular, for species with overlapping generations, it is easier to estimate the effective number of breeders in one reproductive cycle ( N b ) than N e per generation. We empirically evaluated the relationship between life history and ratios of N e , N b and adult census size ( N ) using a recently developed model ( agene ) and published vital rates for 63 iteroparous animals and plants. N b / N e varied a surprising sixfold across species and, contrary to expectations, N b was larger than N e in over half the species. Up to two-thirds of the variance in N b / N e and up to half the variance in N e / N was explained by just two life-history traits (age at maturity and adult lifespan) that have long interested both ecologists and evolutionary biologists. These results provide novel insights into, and demonstrate a close general linkage between, demographic and evolutionary processes across diverse taxa. For the first time, our results also make it possible to interpret rapidly accumulating estimates of N b in the context of the rich body of evolutionary theory based on N e per generation.

scholarly journals THE DYNAMICS OF FINITE HAPLOID POPULATIONS WITH OVERLAPPING GENERATIONS. II. THE DIFFUSION APPROXIMATION

Genetics ◽  
1979 ◽  
Vol 92 (1) ◽  
pp. 339-351
Author(s):  
Ted H Emigh
Keyword(s):  
Population Size ◽  
Effective Population Size ◽  
Diffusion Approximation ◽  
Overlapping Generations ◽  
Mutation Rates ◽  
Reproductive Value ◽  
Selection Coefficient ◽  
Effective Population ◽  
Haploid Population

ABSTRACT The dynamics of a gene in a haploid population can be explained approximately by considering the average reproductive value of the gene. The dynamics of the average reproductive value are similar to those of a gene in a population with nonoverlapping generations with the following modifications: The effective population size, Ne, replaces N; the average mutation rates,μ* and v* replace μ and v; the average overall selection r*+(T-l)s** replaces s; and time is measured in terms of generations, T. The implications of the average selection coefficient to adaptive life histones are discussed.

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