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首页> 外文期刊>Journal of Medical Entomology >Mom Matters: Diapause Characteristics of Culex pipiens-Culex quinquefasciatus (Diptera: Culicidae) Hybrid Mosquitoes
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Mom Matters: Diapause Characteristics of Culex pipiens-Culex quinquefasciatus (Diptera: Culicidae) Hybrid Mosquitoes

机译：妈妈很重要：淡色库蚊-库克斯库蚊（Diptera：Culicidae）杂交蚊子的滞育特性

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摘要

Females of the northern house mosquito, Culex pipiens L., are capable of entering an adult overwintering diapause characterized by arrested ovarian development, enhanced stress tolerance, and elevated lipid stores. In contrast, the southern house mosquito, Culex quinquefasciatus Say, lacks this capacity and is therefore unable to survive the harsh winters found in northern regions of North America. These two species are capable of forming fertile hybrids in the United States, yet the diapause characteristics of these hybrids have not been extensively investigated. We crossed Cx. pipiens from Columbus, OH, with Cx. quinquefasciatus from Vero Beach, FL, and reared F-1 hybrids from all mothers separately under diapause-inducing, short-day conditions (a photoperiod of 8: 16 [L: D] h) at 18 degrees C. Egg follicle length and lipid content were used to assess the diapause status of hybrids. Diapause incidence of hybrids varied widely for progeny from different mothers of the same species, but hybrids with Cx. pipiens mothers were consistently more prone to enter diapause than hybrids that had Cx. quinquefasciatus mothers. Our results suggest a strong maternal influence on the diapause phenotype and that a high percentage (45-75%) of Cx. pipiens-Cx. quinquefasciatus hybrids are capable of entering diapause. This implies that many hybrids can successfully overwinter, leading to a possible widening of the hybrid zone of these two species in North America.
机译：北部家蝇蚊（Culex pipiens L.）的雌性能够进入成年越冬滞育期，其特征是卵巢发育停滞，压力承受能力增强和脂质储存增加。相比之下，南部的蚊子库克斯（Culex quinquefasciatus）说，这种能力不足，因此无法在北美北部的严冬中幸存。在美国，这两个物种能够形成可育的杂种，但是尚未对这些杂种的滞育特性进行广泛研究。我们越过Cx。来自俄亥俄州哥伦布市的Pipiens和Cx。来自佛罗里达州Vero Beach的quinquefasciatus和所有母亲分别在滞育诱导的短日条件下（光周期为8:16 [L：D] h）在18摄氏度下饲养的F-1杂种。卵泡长度和脂质内容用于评估杂种的滞育状态。对于同一个物种的不同后代而言，后代的滞育发生率差异很大，但与Cx杂交。与具有Cx的杂种相比，pipiens的母亲总是更容易进入滞育期。 quinquefasciatus母亲。我们的结果表明，母亲对滞育表型的影响很大，Cx的比例很高（45-75％）。 pipiens-Cx。 quinquefasciatus杂种能够进入滞育状态。这意味着许多杂种可以成功越冬，从而导致北美这两个物种的杂种区域可能扩大。

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