Genetic diversity and population structure of Apis cerana complementary sex determiner (csd) genes in China

文献类型： 外文期刊

第一作者： Zou, Yufei

作者： Zou, Yufei;Ji, Congcong;Tang, Jiao;Cheng, Ruiyi;Shan, Jinqiong;Chen, Chao;Chen, Chao

作者机构：

关键词： Apis cerana; Complementary sex determiner; Population differentiation; Genetic diversity; Breeding management

期刊名称：APIDOLOGIE （ 影响因子：2.2； 五年影响因子：2.7 ）

ISSN： 0044-8435

年卷期： 2025 年 56 卷 2 期

页码：

收录情况： SCI

摘要： In honeybees, fertilized eggs with homozygous complementary sex determiner (csd) alleles develop into sterile diploid males, which are eliminated by workers during the larval stage. A decrease in csd allele diversity leads to increased inbreeding and a higher occurrence of diploid males, significantly decreasing the population growth rate and effective population size. Therefore, understanding and maintaining csd gene diversity is crucial. This study aims to analyze the genetic diversity and population structure of Apis cerana csd genes in China. We sequenced the exon 6-8 region of the csd gene in 250 workers across 13 geographical populations, identifying 234 nucleotide haplotypes and 141 unique amino acid sequences, 89 of which were newly discovered. The csd gene in these populations shows high genetic diversity comparable to that of Apis mellifera; however, the distribution of alleles did not show clusters based on geographic regions. Analyses of genetic differentiation showed variable genetic distance among populations. Our results demonstrate a high diversity of csd genes of A. cerana populations across China, suggesting a low risk of inbreeding in the populations.

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