Objective To evaluate the interaction between attractant ammonia and repellent N, N-diethyl-3-methyl benzoyl amide (DEET) used on human body and to study its influence on their repellency to mosquitoes. Methods Y?tube olfactometer was adopted to test the influence of ammonia, DEET, and association compound of ammonia and DEET on the behavior of Aedes albopictus. Results The attractant ammonia showed significant attraction for Ae. albopictus at 10 mg/L, but it had weak attraction at 1000 mg/L and 100 mg/L. The repellent DEET showed weak repellency to Ae. albopictus at 1000 mg/L and 0.1 mg/L, but had little repellency at other concentrations. The combination of ammonia (1 mg/L) and DEET (1 mg/L) at a ratio of 1∶1 showed significant repellency to Ae. albopictus, while the combination of DEET (1000 or 0.1 mg/L) and ammonia (with the same concentration as DEET) at a ratio of 1∶1 showed neither attraction nor repellency. Conclusion There is association between ammonia and DEET, which can increase the repellency to Ae. albopictus. The study on association between human attractant and repellent provides a new idea for the understanding of repellent mechanism.
XIN Weilong, LIAO Shengliang, JIANG Zhikuan, FAN Guorong, SONG Jie, CHEN Shang?xing, CHEN Jin?zhu, WANG Zongde
. Effect of combination of ammonia and DEET on behaviorof Aedes albopictus[J]. Chinese Journal of Vector Biology and Control, 2014
, 25(2)
: 109
-112
.
DOI: 10.11853/j.issn.1003.4692.2014.02.005
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