通过杀虫剂抗性选择促进沃尔巴克氏体在蚊群中的引入。
Facilitating Wolbachia introductions into mosquito populations through insecticide-resistance selection.
机构信息
Departments of Genetics and Zoology, Bio21 Institute, The University of Melbourne, Parkville, Victoria 3010, Australia.
出版信息
Proc Biol Sci. 2013 Apr 10;280(1760):20130371. doi: 10.1098/rspb.2013.0371. Print 2013 Jun 7.
Wolbachia infections are being introduced into mosquito vectors of human diseases following the discovery that they can block transmission of disease agents. This requires mosquitoes infected with the disease-blocking Wolbachia to successfully invade populations lacking the infection. While this process is facilitated by features of Wolbachia, particularly their ability to cause cytoplasmic incompatibility, blocking Wolbachia may produce deleterious effects, such as reduced host viability or fecundity, that inhibit successful local introductions and subsequent spatial spread. Here, we outline an approach to facilitate the introduction and spread of Wolbachia infections by coupling Wolbachia introduction to resistance to specific classes of insecticides. The approach takes advantage of very high maternal transmission fidelity of Wolbachia infections in mosquitoes, complete incompatibility between infected males and uninfected females, the widespread occurrence of insecticide resistance, and the widespread use of chemical control in disease-endemic countries. This approach is easily integrated into many existing control strategies, provides population suppression during release and might be used to introduce Wolbachia infections even with high and seasonally dependent deleterious effects, such as the wMelPop infection introduced into Aedes aegypti for dengue control. However, possible benefits will need to be weighed against concerns associated with the introduction of resistance alleles.
在发现沃尔巴克氏体可以阻断疾病传播后,人们开始将其引入感染人类疾病的蚊子媒介中。这需要携带阻断疾病沃尔巴克氏体的蚊子成功入侵缺乏这种感染的种群。虽然沃尔巴克氏体的某些特征,特别是其导致细胞质不相容的能力,有助于这一过程,但阻断沃尔巴克氏体可能会产生有害影响,例如降低宿主的生存能力或繁殖力,从而抑制成功的本地引入和随后的空间传播。在这里,我们概述了一种通过将沃尔巴克氏体的引入与对特定类别的杀虫剂的抗性相结合来促进沃尔巴克氏体感染的引入和传播的方法。该方法利用了沃尔巴克氏体在蚊子中非常高的母系传播保真度、感染雄性与未感染雌性之间完全不相容、杀虫剂抗性的广泛存在以及化学防治在疾病流行国家的广泛使用。这种方法很容易整合到许多现有的控制策略中,在释放期间提供种群抑制,并且即使存在高且季节性依赖的有害影响,例如为控制登革热而引入埃及伊蚊的 wMelPop 感染,也可以用于引入沃尔巴克氏体感染。然而,可能需要权衡与引入抗性等位基因相关的担忧,以评估可能的益处。