Qiu Y T, Smallegange R C, Van Loon J J A, Ter Braak C J F, Takken W
Laboratory of Entomology, Wageningen University, Wageningen, the Netherlands.
Med Vet Entomol. 2006 Sep;20(3):280-7. doi: 10.1111/j.1365-2915.2006.00627.x.
Differences between human individuals in their attractiveness to female mosquitoes have been reported repeatedly, but the underlying mechanisms are not well understood. Skin emanations from 27 human individuals, collected on glass marbles, were tested against ammonia in a dual-choice olfactometer to establish their degrees of attractiveness to anthropophilic Anopheles gambiae s.s. Giles (Diptera: Culicidae) mosquitoes. Ammonia was used as a standard odour source because of its proven attractiveness to An. gambiae s.s. Skin emanations from most volunteers attracted significantly more mosquitoes than ammonia. There were clear differences in the attractiveness of skin emanations from different volunteers relative to that of ammonia, as well as in the strength of the trap entry response. Consistent differences were observed when emanations from the three most and the three least attractive volunteers were tested pairwise. No gender or age effect was found for relative attractiveness or trap entry response. Emanations from volunteers with higher behavioural attractiveness elicited higher electroantennogram response amplitudes in two pairs, but in a third pair a higher electroantennogram response was found for the less attractive volunteer. These results confirm that odour contributes to the differences in attractiveness of humans to mosquitoes.
人类个体对雌性蚊子的吸引力差异已被多次报道，但潜在机制尚不清楚。收集在玻璃珠上的27名人类个体的皮肤散发物，在双选嗅觉仪中与氨气进行测试，以确定它们对嗜人按蚊冈比亚亚种吉尔斯（双翅目：蚊科）蚊子的吸引程度。由于氨气已被证明对冈比亚按蚊亚种有吸引力，因此被用作标准气味源。大多数志愿者的皮肤散发物比氨气吸引了更多的蚊子。不同志愿者的皮肤散发物相对于氨气的吸引力以及诱捕进入反应的强度存在明显差异。当对三名最具吸引力和三名最不具吸引力的志愿者的散发物进行两两测试时，观察到了一致的差异。在相对吸引力或诱捕进入反应方面未发现性别或年龄效应。行为吸引力较高的志愿者的散发物在两对实验中引起了较高的触角电图反应幅度，但在第三对实验中，吸引力较低的志愿者的触角电图反应更高。这些结果证实，气味导致了人类对蚊子吸引力的差异。
