中文摘要:
【目的】 在野外评价乙酸、丙酸、辛酸、L-乳酸、1-辛烯-3-醇、乙酸乙酯、氨水和尿素8种人体代谢化合物对白纹伊蚊Aedes albopictus雌蚊产卵引诱和成虫诱杀效果。【方法】 分别采用陷阱诱捕法诱杀和诱蚊、诱卵器监测效果的方法。【结果】 供试的8 种化合物中,白纹伊蚊在1、10、100、1 000 µL/L的乙酸、辛酸水溶液及浓度为1、10、100、1 000、10 000 µL/L的丙酸水溶液中的平均累计产卵量均显著高于对照,其中100 µL/L的乙酸、辛酸和丙酸水溶液中的平均累计产卵量均最多,显著高于对照。而各浓度的L-乳酸、1-辛烯-3-醇、乙酸乙酯、氨水和尿素水溶液中的平均累计产卵量与对照相比则差异不显著。相同浓度(100 µL/L)的组合物(乙酸∶丙酸∶辛酸=1∶1∶1)对白纹伊蚊的平均累计诱蚊量和平均累计产卵量均显著多于单组分乙酸、丙酸、辛酸和对照;说明乙酸、丙酸和辛酸组合物间具有协同增效作用。经过1年放置诱蚊陷阱对白纹伊蚊进行诱捕试验表明,处理组在1年中蚊虫活动最活跃的月份,其诱蚊密度指数和诱卵密度指数均显著降低;而对照组的诱蚊、诱卵指数差异不显著。处理前诱蚊、诱卵指数较低的地方,处理后其诱蚊、诱卵指数在5、6、10月份更显示出极显著的效果。【结论】 连续利用陷阱诱捕法可显著降低试验区的诱蚊密度指数和诱卵密度指数,尤其在诱蚊、诱卵指数低的地区。这一蚊虫控制方法为白纹伊蚊持续有效控制提供技术支撑,值得推广应用。
英文摘要:
[Objectives] To evaluate the effects of eight human
metabolic compounds on the oviposition of female Aedes albopictus mosquitoes, and their effectiveness as lures for
trapping this species in the field. [Methods] The mosquito traps and
mosquito-ovitraps were used to determine the relative attractiveness of the
metabolic compounds tested and mosquito density, respectively. [Results] Among the eight compounds tested, acetic
acid, propionic acid, and octanoic acid were all significantly more attractive
than the control. The mean accumulated egg number laid by Ae.albopictus in ovitraps baited with acetic acid (1, 10, 100, 1
000 µL/L), propionic acid (1, 10, 100, 1 000, 10 000 µL/L), and octoic acid (1,
10, 100, 1 000 µL/L), solutions were more than laid in ovitraps baited with the
distilled water control. Among these treatments, ovitraps containing 100 µL/L
acetic acid, propionic acid, and octanoic acid water solutions had
significantly higher egg numbers than those with distilled water.However, the mean accumulated egg number of traps baited with different
concentrations of L-lactic acid, 1-octene-3 alcohol, ethyl acetate, ammonia,
and a urea water solution, were not significantly different to that of the
distilled water control. The accumulated number of eggs laid, and the number of Ae.albopictus females attracted by a
1∶1∶1 ratio of acetic acid∶propionic acid∶octanoic acid at the same concentration (100 µL/L) were significantly
higher than those attracted to either acetic acid, propionic acid, octanoic
acid, or distilled water alone. This demonstrates that acetic acid, propionic
acid, and octanoic acid have a synergistic effect. Analysis of a year of
trapping data indicate that the mosquito density index and number of eggs
deposited in ovitraps decreased significantly in the most active month of the
year during which there was no significant difference in the number of
mosquitoes trapped and the oviposition index between the treatment and control
groups. However, the mosquito oviposition index significantly declined in May,
June and October, particularly at sites where it had been low before trapping
began. [Conclusion] Continuous
trapping can significantly reduce the mosquito density and egg density indices,
and these effects are more pronounced in areas with a low trapping indices.
This method of mosquito control provides effective continuous control of Ae. albopictus and should be more widely
used.