Division of Biological Science, Faculty of Science, Prince of Songkla University, Hat Yai, Thailand.
Microb Ecol. 2023 Feb;85(2):730-736. doi: 10.1007/s00248-022-01982-1. Epub 2022 Feb 22.
Arthropods are known to harbor several endosymbionts, such as Cardinium, Rickettsia, Spiroplasma, and Wolbachia. Wolbachia, for example, are the most widespread known endosymbionts in the world, which are found in about half of all arthropod species. To increase their transmission, these endosymbionts must manipulate their hosts in several ways such as cytoplasmic incompatibility and male killing. In tropical regions, endosymbiont diversity has not been studied exhaustively. Here, we checked four endosymbionts, including Cardinium, Rickettsia, Spiroplasma, and Wolbachia, in eleven Drosophila species found in Thai Peninsula. The Wolbachia strain wRi-like was found in all populations of Drosophila ananassae and Drosophila simulans. Furthermore, we found two new strains, wMalA and wMalB, in two populations of Drosophila malerkotliana. Besides Wolbachia, we did not find any of the above endosymbionts in all fly species. This work reveals the hidden diversity of endosymbionts in Drosophila and is the first exhaustive study on Drosophila in the region.
节肢动物已知携带有几种内共生体，如卡多体菌、立克次体、螺原体和沃尔巴克氏体。例如，沃尔巴克氏体是世界上分布最广泛的已知内共生体，存在于大约一半的节肢动物物种中。为了增加它们的传播，这些内共生体必须以几种方式操纵它们的宿主，如细胞质不相容性和雄性致死。在热带地区，内共生体的多样性尚未被详尽研究。在这里，我们检查了在泰国半岛发现的 11 种果蝇中的四种内共生体，包括卡多体菌、立克次体、螺原体和沃尔巴克氏体。在所有的果蝇拟暗果蝇和果蝇 simulans 种群中都发现了类似于 wRi 的沃尔巴克氏体菌株。此外，我们在两个果蝇 malerkotliana 种群中发现了两种新的菌株 wMalA 和 wMalB。除了沃尔巴克氏体，我们在所有的蝇种中都没有发现上述任何内共生体。这项工作揭示了果蝇内共生体的隐藏多样性，也是该地区对果蝇的首次详尽研究。
