Reproduction of parasitic mites Varroa destructor in original and new honeybee hosts.
Reproduction of parasitic mites Varroa destructor in original and new honeybee hosts.
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寄生螨瓦螨在原始和新蜜蜂宿主中的繁殖
DOI：
10.1002/ece3.3802
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发表时间：
2018-03
影响因子：
2.6
通讯作者：
Dietemann V
中科院分区：
文献类型：
--
作者：
Lin Z;Qin Y;Page P;Wang S;Li L;Wen Z;Hu F;Neumann P;Zheng H;Dietemann V
摘要体表寄生尘螨Varroa destructor将寄主从东方蜜蜂Apis cerana转移到西部蜜蜂Apis melvena。虽然原始宿主在这种寄生虫的侵袭下存活下来，但它们对新宿主的群体是致命的。在这里，我们调查了一个自然受到破坏弧菌韩国单倍型感染的中华绒毛吸虫种群，这种单倍型导致了全球入侵的螨类谱系。我们的目标是更好地描述允许原始宿主存活的特征，以抵御这种特定的蠕形单倍型的侵扰。已知的抗性的一个主要特征是在中华按蚊的工蜂幼虫上缺乏螨类繁殖。我们证明这一特征既不是由于缺乏对宿主的吸引力，也不是由于寄生虫的生殖启动。然而，寄主发育异常阻碍了螨类的成功繁殖。成虫工作人员意识到了这种状态，并清除了寄主和寄生虫，这极大地影响了寄生虫的适合性。这些结果证实和完善了以前在其他蜜蜂寄主群体中对寄生蜂幼虫易感性的观察结果，为该系统中寄主和寄生虫之间的协同进化提供了新的见解，并可能有助于缓解由于破坏弧菌而造成的意大利蜜蜂大规模群体损失。
Abstract The ectoparasitic mite, Varroa destructor, shifted host from the eastern honeybee, Apis cerana, to the western honeybee, Apis mellifera. Whereas the original host survives infestations by this parasite, they are lethal to colonies of its new host. Here, we investigated a population of A. cerana naturally infested by the V. destructor Korea haplotype that gave rise to the globally invasive mite lineage. Our aim was to better characterize traits that allow for the survival of the original host to infestations by this particular mite haplotype. A known major trait of resistance is the lack of mite reproduction on worker brood in A. cerana. We show that this trait is neither due to a lack of host attractiveness nor of reproduction initiation by the parasite. However, successful mite reproduction was prevented by abnormal host development. Adult A. cerana workers recognized this state and removed hosts and parasites, which greatly affected the fitness of the parasite. These results confirm and complete previous observations of brood susceptibility to infestation in other honeybee host populations, provide new insights into the coevolution between hosts and parasites in this system, and may contribute to mitigating the large‐scale colony losses of A. mellifera due to V. destructor.
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