Thelytoky in Cape honeybees (Apis mellifera capensis) is controlled by a single recessive locus
Thelytoky in Cape honeybees (Apis mellifera capensis) is controlled by a single recessive locus
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DOI：
10.1007/s13592-016-0484-0
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发表时间：
2017-05-01
期刊：
影响因子：
2.4
通讯作者：
Jarosch-Perlow, Antje
中科院分区：
文献类型：
--
作者：
Aumer, Denise;Allsopp, Mike H.;Jarosch-Perlow, Antje
意大利蜜蜂的工蜂繁殖通常通过孤雌生殖产生单倍体雄性。南非开普蜜蜂的产蜂工人是个例外。由于羊草在减数分裂过程中纺锤体的异常旋转，工蜂能够通过受精卵的孤雌生殖产生雌性后代。这一性状被认为是由一个隐性等位基因控制的，但这一结论最近受到了Chapman等人的质疑。(2015)。为了弄清开普敦蜜蜂孤雌生殖的遗传方式，我们从好望角自然保护区特有野生种群的一个群体中确定了74只单蜂王工蜂的后代的性别。当我们测试个体工蜂繁殖时，孤雌生殖是二态的，以孟德尔式的方式分离，支持单基因座模型。我们可以排除决定孤雌生殖模式的母性或父性影响。对Chapman等人的数据进行了仔细的重新分析。(2015)还透露，他们的数据并不与该基因遗传的单基因座模型相矛盾。
Worker reproduction in Apis mellifera typically leads to haploid males produced via arrhenotokous parthenogenesis. An exception are laying workers of the South African Cape honeybee Apis mellifera capensis. Due to an abnormal spindle rotation during meiosis A. m. capensis workers are able to produce female progeny via thelytokous parthenogenesis. This trait has been suggested to be genetically controlled by a recessive allele at the thelytoky locus (th), but this conclusion was recently challenged by Chapman et al. (2015). To clarify the mode of inheritance for thelytokous parthenogenesis in Cape honeybees, we determined the sex of the offspring of 74 A. m. capensis workers of a single queen from a colony of the endemic wild population at the Cape of Good Hope Nature Reserve. When we tested individual worker reproduction, parthenogenesis was dimorphic, segregating in a Mendelian fashion supporting the single locus model. We could exclude maternal or paternal effects determining the mode of parthenogenesis. A careful re-analysis of the data of Chapman et al. (2015) also revealed that their data do not contradict the one locus model for the inheritance of thelytoky.