Rat volatiles as an attractant source for the Asian tiger mosquito, Aedes albopictus

Periodo de realización: 1900/01/01 al 2020/01/01

Tipo: Artículo científico

Lugar(es) de estudio: Tapachula de Córdova y Ordoñez, Chis., México
Resumen: "Aedes albopictus is a vector of dengue, chikungunya, and dirofilariasis. Volatile compounds are crucialfor mosquitoes to locate their hosts. This knowledge has allowed the identification of attractantsderived from human odours for highly anthropophilic mosquito species. In this study, we used ratsas a experimental model to identify potential attractants for host-seeking Ae. albopictus females.Porapak Q extracts from immature female rats were more attractive to Ae. albopictus females thanthose from mature and pregnant females, and males. Phenol, 4-methylphenol, 4-ethylphenol,and indole were identified compounds in male, immature, mature, and pregnant female extracts.There were quantitative differences in these compounds among the extracts that likely explainthe discrepancy in their attractiveness. Ae. albopictus females were not attracted to the singlecompounds when was compared with the four-component blend. However, the binary blend of4-methylphenol + 4-ethylphenol and the tertiary blend of 4-methylphenol + 4-ethylphenol + indolewere as attractive as the four-component blend. In the field trials, BGS traps baited with the tertiary orquaternary blends caught more Ae. albopictus females and males than BGS traps without lures. This isthe first laboratory and field study to identify compounds that mediate the attraction of Ae. albopictusto one of its hosts"

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