Objective To compare the effectiveness of three chemical attractants (A, B, and C) and carbon dioxide (CO2) as well as their combinations in attracting and trapping common mosquitos by conducting experiments in large residential areas, so as to provide a scientific basis for the application of chemical attractants and CO2 in mosquito surveillance and control. Methods Mosquito attracting and trapping experiments were conducted in the field using three attractants over 10 consecutive days. The mosquito attracting and trapping abilities were analyzed for each day. Experiments with the attractants and combination of the attractants and 150 ml/min flow CO2 were conducted using Latin square design and cross-over method. Analysis of variance and rank sum test were performed to evaluate the effectiveness of the attractants and CO2 in mosquito attracting and trapping, as well as the impact of CO2 on the species and sex of mosquitos attracted and trapped. Results The average numbers of mosquitos attracted and trapped by attractants A, B, and C over 10 consecutive days were 220.00, 203.67, and 16.67, respectively, with the maximum number being 46, 49, and 5 per day, respectively. Attractant A, double attractant A, and attractant A combined with 150 ml/min flow CO2 attracted and trapped 358, 784, and 1 268 mosquitos, respectively, with significant differences in any two of the three groups (all P<0.05). Attractants A and B combined with 150 ml/min flow CO2 respectively enhanced the effectiveness of attracting mosquitos, with significant differences observed in Culex pipiens quinquefasciatus and Aedes albopictus (all P<0.001) and between the female and male mosquitoes ofthem(all P<0.001). Conclusions Chemical attractants have a certain lasting effect in trapping mosquitos in the field. The combination of attractants with CO2 can enhance the trapping effect more significantly than increasing the portion of attractants, making them applicable in mosquito surveillance and control.
DENG Hui, DUAN Jin-hua, LU Rui-peng, CHENG Zong-jing, CHENG Ming-ji, HU Sheng-jun, SHEN Xiu-ting, ZHONG Yu-wen
. A study of the effectiveness of chemical attractants and carbon dioxide in attracting and trapping mosquitos in the field[J]. Chinese Journal of Vector Biology and Control, 2025
, 36(1)
: 18
-21
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DOI: 10.11853/j.issn.1003.8280.2025.01.004
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