茴香醛对蚊虫嗅觉行为的影响研究

目的 探讨茴香醛对蚊虫嗅觉行为的影响.方法 在风洞系统内测试茴香醛不同剂量诱导的白纹伊蚊行为反应及对宿主定向行为的影响；在密闭空间中,分别以0.013～0.250 μg/cm3剂量的茴香醛处理白纹伊蚊24～96 h后测定其感受、定向寄主的能力.结果 在风洞系统内,茴香醛单一化合物其剂量3.1％～99.0％对白纹伊蚊均有一定的引诱作用,而与宿主气味并存时,只有高剂量(99.0％)对宿主定向行为有较高的抑制率(85.4％).白纹伊蚊在0.050～0.250 μg/cm3剂量茴香醛气味空间处理24～96 h后对其正常感受宿主气味的能力有显著的抑制作用,随处理时间延长、剂量升高抑制效果增强,但低于此剂量则没有抑制作用.结论 茴香醛单一化合物对蚊虫具有引诱性,但与宿主气味并存时,对蚊虫正常感受宿主气味的能力具有一定的抑制作用.

Anisaldehyde and the olfactory behavior of Aedes albopictus(Diptera:Culicidae)

Objective To investigate the effect of anisaldehyde on the olfactory behavior of Aedes albopictus. Methods Olfactory behaviors and host-seeking abilities of Ae. albopictus were tested with an olfactometer, and the inhibitory effects on their host-seeking abilities after delivery of anisaldehyde at a dose of 0.013-0.250 μg/cm3 for 24-96 h were observed. Results Anisaldehyde at 3.1%-99.0% effectively attracted Ae. albopietus when administered alone, though inhibited their host-seeking abilities （by 85.4%） at a high dose （99.0%） under exposure to the host odor. The host-seeking abilities of Ae. albopictus were noticeably reduced after administration of anisaldehyde at 0.050-0.250 μg/cm3 for 24-96 h, the inhibition rate being positively correlated with time and dosage. Conclusion Anisaldhyde was effective in attracting Ae. albopictus when only used, and could also inhibit the host-seeking ability of mosquitoes in combination with the host odor.