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首页> 外文期刊>Parasitology >Low fertility, fecundity and numbers of mated female offspring explain the lower reproductive success of the parasitic mite Varroa destructor in African honeybees
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Low fertility, fecundity and numbers of mated female offspring explain the lower reproductive success of the parasitic mite Varroa destructor in African honeybees

机译：低生育率，繁殖力和交配女性后代的数量解释了非洲蜜蜂寄生螨Varroa析构件的较低生殖成功

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Although Varroa destructor is the most serious ecto-parasite to the honeybee, Apis mellifera L., some honeybee populations such as Apis mellifera scutellata in Kenya can survive mite infestations without treatment. Previously, we reported that grooming behaviour could be a potential tolerant mechanism expressed by this honeybee subspecies towards mite infestation. However, both hygienic and grooming behaviours could not explain the lower mite-infestation levels recorded in these colonies. Here, we investigated the involvement of other potential resistant mechanisms including suppression of mite reproduction in worker brood cells of A. m. scutellata to explain the low mite numbers in their colonies. High infertility rates (26–27%) and percentages of unmated female offspring (39–58%) as well as low fecundity (1.7–2.2, average offspring produced) were identified as key parameters that seem to interact with one another during different seasons to suppress mite reproduction in A. m. scutellata colonies. We also identified offspring mortality in both sexes and absence of male offspring as key factors accounting for the low numbers of mated daughter mites produced in A. m. scutellata colonies. These results suggest that reduced mite reproductive success could explain the slow mite population growth in A. m. scutellata colonies.
机译：虽然Varroa析构函数是蜜蜂最严重的寄生虫，Apis Mellifera L.，一些蜜蜂种群，如肯尼亚的Apis Mellifera Scutellata，在没有治疗的情况下存活螨虫害。以前，我们报告说，美容行为可能是这种蜜蜂亚种对螨虫侵扰表达的潜在耐受机制。然而，卫生和修饰行为都无法解释这些殖民地中记录的较低的螨虫侵扰水平。在这里，我们调查了其他潜在的抗性机制，包括抑制A.M的工人育龄细胞中的螨型繁殖。 Scutellata解释他们的殖民地中的低螨数。未经不育症率（26-27％）和未发出的女性后代（39-58％）以及低繁殖率（1.7-2.2，产生的平均后代）的百分比被确定为在不同季节期间彼此相互作用的关键参数抑制A. m中的螨虫再生产。 Scutellata殖民地。我们还确定了对性别的后代死亡率，并且缺乏男性后代作为关键因素核算A.M中产生的少数交配的女儿螨虫。 Scutellata殖民地。这些结果表明，减少的螨虫生殖成功可以解释A.M中的慢螨虫生长。 Scutellata殖民地。

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