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Estimation of effective number of breeders from molecular coancestry of single cohort sample
Evolutionary Applications, 2008 AbstractThe effective population size, Ne, is an important parameter in population genetics and conservation biology. It is, however, difficult to directly estimate Ne from demographic data in many wild species. Alternatively, the use of genetic data has received much attention in recent years.
Tetsuro Nomura
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Marker-based estimation of the coefficient of coancestry in hybrid breeding programmes
Theoretical and Applied Genetics, 2009Molecular markers allow to estimate the pairwise relatedness between the members of a breeding pool when their selection history is no longer available or has become too complex for a classical pedigree analysis. The field of population genetics has several estimation procedures at its disposal, but when the genotyped individuals are highly selected ...
S, Maenhout, B, De Baets, G, Haesaert
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Estimation of coefficient of coancestry using molecular markers in maize
Theoretical and Applied Genetics, 1993The coefficient of coancestry (fAB) between individuals A and B is the classical measure of genetic relationship. fAB is determined from pedigree records and is the probability that random alleles at the same locus in A and B are copies of the same ancestral allele or identical by descent (ibd).
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1987
We can now evaluate the coancestry between specific relatives. Consider first the coancestry between an individual and one of its offspring, f(PO). If A and B are the parents of C, fAC is an example of a parent-offspring coancestry coefficient. From Eq. (25.5), $${f_{AC}} = \left( {1/2} \right)\left( {{f_{AA}} + {f_{AB}}} \right).$$
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We can now evaluate the coancestry between specific relatives. Consider first the coancestry between an individual and one of its offspring, f(PO). If A and B are the parents of C, fAC is an example of a parent-offspring coancestry coefficient. From Eq. (25.5), $${f_{AC}} = \left( {1/2} \right)\left( {{f_{AA}} + {f_{AB}}} \right).$$
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Tabular Calculation of Coancestry
1987If L is the offspring of J × K, and if we know the coancestries of A and B with J and K, we can calculate the coancestries of A and B with L, using the first averaging rule, Eq. (25.5). These calculations lend themselves readily to a tabular format: $$\begin{gathered} \,\,\,\,\,\,\,\,\,\,\,\,\,J\,\,\,\,\,\,\,\,\,\,\,K\,\,\,\,\,\,\,\,\,\,\,L \hfill \
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230. Inbreeding and coancestry trends in Nordic Holstein
Proceedings of 12th World Congress on Genetics Applied to Livestock Production (WCGALP), 2022S. Tenhunen +5 more
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Molecular Ecology Resources, 2010
AbstractThe software package coancestry implements seven relatedness estimators and three inbreeding estimators to estimate relatedness and inbreeding coefficients from multilocus genotype data. Two likelihood estimators that allow for inbred individuals and account for genotyping errors are for the first time included in this user‐friendly program for
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AbstractThe software package coancestry implements seven relatedness estimators and three inbreeding estimators to estimate relatedness and inbreeding coefficients from multilocus genotype data. Two likelihood estimators that allow for inbred individuals and account for genotyping errors are for the first time included in this user‐friendly program for
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Evaluating different genomic coancestry matrices for managing genetic variability in turbot
Aquaculture, 2020Elisabeth Morales-Gonzalez +2 more
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