PHENOLOGY OF ROCK POOL MOSQUITOES IN THE SOUTHERN APPALACHIAN MOUNTAINS: SURVEYS REVEAL APPARENT WINTER HATCHING OF AEDES JAPONICUS AND THE POTENTIAL FOR ASYMMETRICAL STAGE-SPECIFIC INTERACTIONS
PHENOLOGY OF ROCK POOL MOSQUITOES IN THE SOUTHERN APPALACHIAN MOUNTAINS: SURVEYS REVEAL APPARENT WINTER HATCHING OF AEDES JAPONICUS AND THE POTENTIAL FOR ASYMMETRICAL STAGE-SPECIFIC INTERACTIONS
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DOI：
10.2987/20-6964.1
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发表时间：
2020-12-01
影响因子：
1
通讯作者：
Byrd, Brian D.
中科院分区：
文献类型：
--
作者：
Day, Corey A.;Lewandowski, Kaylin;Byrd, Brian D.
据报道，在引入Ae后，北美岩池蚊子--黑斑伊蚊--的数量已经大量减少。JAPONICUS JAPONICUS到美国，但导致减少的具体机制尚不清楚。因此，有必要进行实地研究，以提高我们对这两个物种共存的天然岩石水池系统的了解。我们在查图加河沿岸、北卡罗来纳州收银台附近的高海拔地点(728米)和佐治亚州克莱顿附近的低海拔地点(361米)，在12个月的时间里对岩池无脊椎动物进行了采样。共鉴定出大型无脊椎动物12目，隶属于19科5种蚊虫。日本伊蚊在这两个地点全年都有活动。我们观察到了越冬的Ae。日本血吸虫幼虫在水温低至3摄氏度的池塘中孵化，并在10摄氏度以下的水中检测到明显的越冬卵孵化。在高海拔地点很少出现黑纹伊蚊，但在低海拔地点夏季几个月大量繁殖。晚期Ae.日本血吸虫幼虫于2019年3月在池塘栖息，当时Ae.腐手掌首先出现在相同的池子里，创造了不对称的阶段特定相互作用的可能性。我们的观察结果为Ae越冬和早期孵化提供了证据。东南部气候条件下的日本田鼠。滞育Ae阶段依赖竞争和越冬卵孵化重要性的进一步研究。日本血吸虫卵是有保证的。
The North American rock pool mosquito, Aedes atropalpus, has reportedly decreased in abundance following the introduction of Ae. japonicus japonicus to the USA, but the specific mechanisms responsible for the reduction remain unclear. Thus, there is a need for field studies to improve our knowledge of natural rock pool systems where both species co-occur. We sampled rock pool invertebrates over a 12-month period along the Chattooga River at a high-elevation site (728 m) near Cashiers, NC, and at a lower-elevation site (361 m) near Clayton, GA. We identified 12 orders of macroinvertebrates representing at least 19 families and 5 mosquito species. Aedes j. japonicus was present year-round at both sites. We observed overwintering Ae. j. japonicus larvae in pools with water temperatures as cold as 3 degrees C and detected apparent winter egg hatching in water below 10 degrees C. Aedes atropalpus was rarely encountered at the high-elevation site but was highly abundant in the summer months at the low-elevation site. Late-stage Ae. j. japonicus larvae inhabited pools in March 2019 when Ae. atropalpus first appeared in the same pools, creating the potential for asymmetrical stage-specific interactions. Our observations provide evidence of overwintering and early hatching of Ae. j. japonicus in the southeastern climate. Further study of the importance of stage-dependent competition and winter egg hatching of diapausing Ae. j. japonicus eggs is warranted.