Coancestry rate’s estimate of effective population size for genetic variability monitoring
نویسندگان
چکیده
منابع مشابه
Genome-Wide Estimates of Coancestry, Inbreeding and Effective Population Size in the Spanish Holstein Population
Estimates of effective population size in the Holstein cattle breed have usually been low despite the large number of animals that constitute this breed. Effective population size is inversely related to the rates at which coancestry and inbreeding increase and these rates have been high as a consequence of intense and accurate selection. Traditionally, coancestry and inbreeding coefficients ha...
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Early detection of population declines is essential to prevent extinctions and to ensure sustainable harvest. We evaluated the performance of two N e estimators to detect population declines: the two-sample temporal method and a one-sample method based on linkage disequilibrium (LD). We used simulated data representing a wide range of population sizes, sample sizes and number of loci. Both meth...
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We introduce a simple method to estimate effective population size from increase in coancestry (Δc(jk)) for all pairs of individuals j and k in a reference subpopulation. An increase in pairwise coancestry for any pair of individuals j and k can be defined assuming that a hypothetical mating between them would give an individual with an inbreeding coefficient equal to c(jk), where c(jk) is the ...
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Throughout the preceding chapter, we assumed a population with an idealized set of Wright-Fisher features, including random mating within a homogeneous group of monoecious, self-compatible individuals with equal expected family sizes, discrete generations, and an absence of density fluctuations. Because almost all populations deviate from this ideal structure in one or more ways, and often subs...
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Amounts of genetic drift and the effective size of populations can be estimated from observed temporal shifts in sample allele frequencies. Bias in this so-called temporal method has been noted in cases of small sample sizes and when allele frequencies are highly skewed. We characterize bias in commonly applied estimators under different sampling plans and propose an alternative estimator for g...
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ژورنال
عنوان ژورنال: Conservation Genetics Resources
سال: 2019
ISSN: 1877-7252,1877-7260
DOI: 10.1007/s12686-019-01092-0