Oviposition and flight orientation response of Aedes aegypti to certain aromatic aryl hydrazono esters
Oviposition and flight orientation response of Aedes aegypti to certain aromatic aryl hydrazono esters
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DOI：
10.1007/s00436-012-2921-y
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发表时间：
2012-09-01
影响因子：
2
通讯作者：
Kaushik, M. P.
中科院分区：
文献类型：
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作者：
Guha, Lopamudra;Seenivasagan, T.;Kaushik, M. P.
埃及伊蚊是一种白天叮咬，高度嗜热的蚊子，也是印度登革热和基孔肯雅病的潜在载体。A.埃及伊蚊是一种容器繁殖者，通常在贮水和淡水中产卵，以及在居民区附近的废弃容器中产卵，这些容器为怀孕的雌性提供了合适的栖息地。这些蚊子的昼夜活动和嗜内性增加了与人类接触的频率。在疫区确保来自人类宿主的血粉导致疾病发生率增加。妊娠蚊子可能被引诱到引诱剂处理的陷阱，随后可能被杀虫剂或生长调节剂杀死。在这个方向上，A.用双重选择实验测定了埃及雌蚊对10 ppm亚肼基芳基酯（AHE）处理的碗的定向反应，并用Y型嗅觉仪研究了它们对这些酯类化合物的定向反应。在10 mg/L浓度下，AHE-2、AHE-11和AHE-12的产卵活性指数（OAI）分别为+0.39、+0.24和+0.48，而AHE-8、AHE-9和AHE-10的产卵活性指数分别为-0.46、-0.35和-0.29。在Y型管嗅觉仪生物测定中，与对照相比，AHE-2吸引了60%的雌性，而对于AHE-11和AHE-12的气味，约70%的雌性被捕获在处理室中。相比之下，只有27- 30%的妊娠雌性进入释放AHE-8、AHE-9和AHE-10气味羽流的室，而70%进入对照室，表明可能不偏好处理气味以及干扰嗅觉受体。这些化合物具有作为产卵刺激剂或威慑剂用于使用诱蚊产卵器监测和控制蚊子种群的潜力。
Aedes aegypti is a day-biting, highly anthropophilic mosquito and a potential vector of dengue and chikungunya in India. A. aegypti is a container breeder, generally oviposit in the stored and fresh water bodies, and discarded containers near residential areas that provide suitable habitats for oviposition by gravid females. The diurnal activity and endophilic nature of these mosquitoes have increased the frequency of contact with human being. Assured blood meal from human host in an infested area leads to increased disease occurrence. Gravid mosquitoes can potentially be lured to attractant-treated traps and could subsequently be killed with insecticides or growth regulators. In this direction, oviposition by A. aegypti females to aryl hydrazono esters (AHE)-treated bowls at 10 ppm concentration was tested in dual choice experiment, and their orientation response to these ester compounds was studied in Y-tube olfactometer. Among the esters tested, AHE-2, AHE-11 and AHE-12 elicited increased egg deposition with oviposition activity indices (OAI) of +0.39, +0.24 and +0.48, respectively, compared to control; in contrast, AHE-8, AHE-9 and AHE-10 showed negative oviposition response with OAI of -0.46, -0.35 and -0.29, respectively, at 10 mg/L. In the Y-tube olfactometer bioassay, AHE-2 attracted 60 % females compared to control, while to the odour of AHE-11 and AHE-12, about 70 % of the females were trapped in treated chambers. In contrast, only 27-30 % of gravid females entered the chamber releasing AHE-8, AHE-9 and AHE-10 odour plumes, while 70 % entered control chamber, evincing a possible non-preference of treatment odours as well as interference with olfactory receptors. These compounds have the potential for application as oviposition stimulants or deterrents for surveillance and control of mosquito population using ovitraps.