Identification of sex chromosomes and primary sex ratio in the small hive beetle, a worldwide parasite of honey bees
Identification of sex chromosomes and primary sex ratio in the small hive beetle, a worldwide parasite of honey bees
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DOI：
10.1093/gigascience/giad056
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发表时间：
2023-12-28
期刊：
影响因子：
9.2
通讯作者：
Evans，Jay D.
中科院分区：
文献类型：
--
作者：
Huang，Qiang;Sim，Sheina B.;Evans，Jay D.
在过去的20年里，膨胀小蜂（Aethina tumida）已经成为全球范围内对蜜蜂的威胁。这些甲虫收获巢资源，幼虫蜜蜂，并最终破坏巢资源与胶状粘液一起与真菌共生Kodamaea ohmeri.ResultsHere，我们提出了第一个染色体水平的基因组组装的SHB。由于保守（BUSCO）节肢动物基因的99.1%的代表性，该资源使SHB成功和可能控制的化学感受，消化和解毒特性的研究成为可能。我们使用这个注释的组件来表征SHB性染色体和女性偏斜的初级性别比的特征。我们还发现染色体融合和性染色体中的重组率较低比常染色体。ConclusionsGenome启用的见解将澄清的特点，使这种甲虫成功地利用蜂巢资源，并将是至关重要的，以确定观察到的性别比例不对称的原因。
BackgroundThe small hive beetle (SHB),Aethina tumida, has emerged as a worldwide threat to honey bees in the past two decades. These beetles harvest nest resources, feed on larval bees, and ultimately spoil nest resources with gelatinous slime together with the fungal symbiontKodamaea ohmeri.ResultsHere, we present the first chromosome-level genome assembly for the SHB. With a 99.1% representation of conserved (BUSCO) arthropod genes, this resource enables the study of chemosensory, digestive, and detoxification traits critical for SHB success and possible control. We use this annotated assembly to characterize features of SHB sex chromosomes and a female-skewed primary sex ratio. We also found chromosome fusion and a lower recombination rate in sex chromosomes than in autosomes.ConclusionsGenome-enabled insights will clarify the traits that allowed this beetle to exploit hive resources successfully and will be critical for determining the causes of observed sex ratio asymmetries.