Cartography of odor chemicals in the dengue vector mosquito (Aedes aegypti L., Diptera/Culicidae)

Fengen Wang (1) , Christelle Delannay (2) , Daniella Goindin (2) , Ligang Deng (1) , Shuai Guan (1) , Xiao Lu (1) , Florence Fouque (2) , Anubis Vega-Rúa (2) , Jean-François Picimbon (1, 3)

1 SAAS - Shandong Academy of Agricultural Sciences
2 Institut Pasteur de la Guadeloupe
3 Qilu University of Technology

This study was aimed to identify the chemical compounds of Aedes aegypti that can be potentially used to develop pheromone-based vector control methods. In this study, we compared the chemical compounds collected from the organs of mosquitoes at different developmental stages in the life cycle. We also compared the composition and amount of extracts from the different tissues of male and female adult mosquito. Interestingly, we found large amount of C17-C20 ethyl and methyl esters in the wings of female and antennae of male mosquito. We also found that isopropyl esters, dodelactone, octadecenoic acid and medium-chain fatty acid increase drastically during the late larval stage (L4). Old adult mosquitoes showed remarkable increase in production of C16:1 and C18:1 methyl esters, as a first example of chemical signatures specifically associated with aging in the animals. This knowledge may open the ground to find new behaviorally-important molecules with the ability to control Aedes specifically.

Domaines: Zoologie des invertébrés; Santé publique et épidémiologie

Fengen Wang, Christelle Delannay, Daniella Goindin, Ligang Deng, Shuai Guan, et al.. Cartography of odor chemicals in the dengue vector mosquito (Aedes aegypti L., Diptera/Culicidae). Scientific Reports, 2019, 9 (1), pp.8510. ⟨10.1038/s41598-019-44851-7⟩. ⟨hal-02571583⟩