Mom Matters: Diapause Characteristics of Culex pipiens-Culex quinquefasciatus (Diptera: Culicidae) Hybrid Mosquitoes.
Mom Matters: Diapause Characteristics of Culex pipiens-Culex quinquefasciatus (Diptera: Culicidae) Hybrid Mosquitoes.
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妈妈很重要：淡色库蚊-致倦库蚊（双翅目：库蚊科）杂交蚊子的滞育特征。
DOI：
10.1093/jme/tju016
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发表时间：
2015
影响因子：
2.1
通讯作者：
Denlinger,DavidL
中科院分区：
文献类型：
--
作者：
Meuti,MeganE;Short,ClancyA;Denlinger,DavidL
北方库蚊（库蚊）雌蚊。，能够进入成年越冬滞育，其特征是卵巢发育受阻，抗逆性增强，脂质储存增加。相比之下，南方的家蚊，致倦库蚊，缺乏这种能力，因此无法在北美北部地区的严冬中生存。在美国，这两个物种能够形成可育的杂交种，但这些杂交种的滞育特性尚未得到广泛的研究。我们crossedCx。来自俄亥俄州哥伦布市的pipiens。在18°C的短日照条件下（光周期为8:16 [L:D] h），分别饲养来自佛罗里达州Vero Beach的致蚊致蚊（quinquciciatusus）。用卵泡长度和脂质含量来评价杂交种的滞育状态。同一物种不同母系后代的滞育率差异很大，但含cx的杂交种滞育率差异不大。相较于有cx基因的杂交种，淡色雌蜂始终更容易进入滞育。quinquefasciatusmothers。我们的研究结果表明，母亲对滞育表型有很强的影响，并且cx的高百分比（45-75%）。pipiens-Cx。致倦库蚊的杂交种能够进入滞育。这意味着许多杂交品种可以成功越冬，从而可能扩大这两个物种在北美的杂交区域。
Females of the northern house mosquito,Culex pipiensL., 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 quinquefasciatusSay, 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 crossedCx. pipiensfrom Columbus, OH, withCx. quinquefasciatusfrom Vero Beach, FL, and reared F1hybrids from all mothers separately under diapause-inducing, short-day conditions (a photoperiod of 8:16 [L:D] h) at 18°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 withCx. pipiensmothers were consistently more prone to enter diapause than hybrids that hadCx. quinquefasciatusmothers. Our results suggest a strong maternal influence on the diapause phenotype and that a high percentage (45–75%) ofCx. pipiens–Cx. quinquefasciatushybrids 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.