Behavioural response of Culex pipiens biotype molestus to oviposition pheromone.

Anastasia Fytrou, Dimitrios P Papachristos, Panagiotis G Milonas, Athanasios Giatropoulos, Spyros E Zographos, Antonios Michaelakis

Journal of insect physiology 2022 Apr

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Insect behaviour relies on an olfactory sensory system that controls a range of activities, from food choice and mating to oviposition, where pheromones play a central role. In Culex mosquitoes, egg-laying is accompanied by the release of mosquito oviposition pheromone (MOP), which has been shown to affect the oviposition behaviour of conspecifics. Here, we investigated for the first time the effect of MOP on the oviposition rate of Culex pipiens biotype molestus, examining separately males and females, before and after mating and oviposition. Our results demonstrate that MOP is more likely to act as an oviposition stimulant rather than an attractant, since more gravid females laid eggs in its presence, while the number of male or female mosquitoes (virgin or mated) captured on pheromone-treated pots was similar to those treated with control water. Copyright © 2022 Elsevier Ltd. All rights reserved.

Citation

Anastasia Fytrou, Dimitrios P Papachristos, Panagiotis G Milonas, Athanasios Giatropoulos, Spyros E Zographos, Antonios Michaelakis. Behavioural response of Culex pipiens biotype molestus to oviposition pheromone. Journal of insect physiology. 2022 Apr;138:104383