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 crucial
for mosquitoes to locate their hosts. This knowledge has allowed the identification of attractants
derived from human odours for highly anthropophilic mosquito species. In this study, we used rats
as 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 than
those 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 explain
the discrepancy in their attractiveness. Ae. albopictus females were not attracted to the single
compounds when was compared with the four-component blend. However, the binary blend of
4-methylphenol + 4-ethylphenol and the tertiary blend of 4-methylphenol + 4-ethylphenol + indole
were as attractive as the four-component blend. In the field trials, BGS traps baited with the tertiary or
quaternary blends caught more Ae. albopictus females and males than BGS traps without lures. This is
the first laboratory and field study to identify compounds that mediate the attraction of Ae. albopictus
to one of its hosts"