Genetic parameters for weight, morphometry and oviposition of Africanized honeybee queens using simulated data

ABSTRACT This study aimed to estimate genetic parameters for simulated data of body weight (BW), abdominal width (AW), abdominal length (AL), and oviposition. Simulation was performed based on real data collected at apiaries in the region of Campo das Vertentes, Minas Gerais, Brazil. Genetic evaluations were performed using single- and two-trait models and (co)variance components were estimated by the restricted maximum likelihood method. The heritability for BW, AW, AL and oviposition were 0.54, 0.47, 0.31 and 0.66, respectively. Positive genetic correlations of high magnitude were obtained between BW and AW (0.80), BW and oviposition (0.69), AW and oviposition (0.82), and AL and oviposition (0.96). The genetic correlations between BW and AL (0.11) and between AW and AL (0.26) were considered moderate and low. In contrast, the phenotypic correlations were positive and high between BW and AW (0.97), BW and AL (0.96), and AW and AL (0.98). Phenotypic correlations of low magnitude and close to zero were obtained for oviposition with AL (0.02), AW (-0.02), and BW (-0.03). New studies involving these characteristics should be conducted on populations with biological data in order to evaluate the impact of selection on traits of economic interest.

摘要 本研究旨在估算体重（body weight, BW）、腹宽（abdominal width, AW）、腹长（abdominal length, AL）与产卵量（oviposition）的模拟数据的遗传参数。本研究基于巴西米纳斯吉拉斯州坎普达斯韦尔滕特斯地区养蜂场采集的真实实验数据开展模拟。研究采用单性状与双性状模型进行遗传评估，并通过约束最大似然法估算方差-协方差组分。结果显示，体重、腹宽、腹长与产卵量的遗传力分别为0.54、0.47、0.31和0.66。体重与腹宽（0.80）、体重与产卵量（0.69）、腹宽与产卵量（0.82）以及腹长与产卵量（0.96）之间均呈现高强度正向遗传相关；而体重与腹长（0.11）、腹宽与腹长（0.26）之间的遗传相关则为中等强度和低强度。与之相对，体重与腹宽（0.97）、体重与腹长（0.96）以及腹宽与腹长（0.98）之间的表型相关均为高强度正向相关；产卵量与腹长（0.02）、腹宽（-0.02）及体重（-0.03）之间的表型相关则为低强度且接近零。未来应针对携带真实生物学数据的群体开展涉及上述性状的新研究，以评估选择对经济重要性性状的影响。