Estimation of parameters and breeding values for growth traits of largemouth bass

2013 ◽  
Vol 18 (4) ◽  
pp. 766-773
Author(s):  
Rong LI ◽  
Junjie BAI ◽  
Shengjie LI ◽  
jiexiang WANG ◽  
Xing YE
Keyword(s):  
Largemouth Bass ◽  
Growth Traits ◽  
Estimation Of Parameters ◽  
Breeding Values

scholarly journals Estimation of Parameters of Gaussian Sum Distributed Noises in State-Space Models

2020 ◽  
Vol 53 (2) ◽  
pp. 2415-2422
Author(s):  
Jindřich Duník ◽  
Oliver Kost ◽  
Ondřej Straka
Keyword(s):  
State Space ◽  
State Space Models ◽  
Estimation Of Parameters ◽  
Gaussian Sum

scholarly journals Estimation of Parameters of Deleterious Mutations in Partial Selfing or Partial Outcrossing Populations and in Nonequilibrium Populations

Genetics ◽  
2000 ◽  
Vol 154 (4) ◽  
pp. 1893-1906 ◽  
Author(s):  
Jian Li ◽  
Hong-Wen Deng
Keyword(s):  
Computer Simulations ◽  
Natural Populations ◽  
Deleterious Mutations ◽  
Selfing Rate ◽  
Estimation Of Parameters ◽  
Animal Populations ◽  
Rapid Pace ◽  
Dynamics Of Populations ◽  
Mutation And Selection

Abstract The Deng-Lynch method was developed to estimate the rate and effects of deleterious genomic mutations (DGM) in natural populations under the assumption that populations are either completely outcrossing or completely selfing and that populations are at mutation-selection (M-S) balance. However, in many plant and animal populations, selfing or outcrossing is often incomplete in that a proportion of populations undergo inbreeding while the rest are outcrossing. In addition, the degrees of deviation of populations from M-S balance are often not known. Through computer simulations, we investigated the robustness and the applicability of the Deng-Lynch method under different degrees of partial selfing or partial outcrossing and for nonequilibrium populations approaching M-S balance at different stages. The investigation was implemented under constant, variable, and epistatic mutation effects. We found that, generally, the estimation by the Deng-Lynch method is fairly robust if the selfing rate (S) is <0.10 in outcrossing populations and if S > 0.8 in selfing populations. The estimation may be unbiased under partial selfing with variable and epistatic mutation effects in predominantly outcrossing populations. The estimation is fairly robust in nonequilibrium populations at different stages approaching M-S balance. The dynamics of populations approaching M-S balance under various parameters are also studied. Under mutation and selection, populations approach balance at a rapid pace. Generally, it takes 400–2000 generations to reach M-S balance even when starting from homogeneous individuals free of DGM. Our investigation here provides a basis for characterizing DGM in partial selfing or outcrossing populations and for nonequilibrium populations.

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