Genomics of urban adaptation and exaptation in mosquitoes and consequences for vectorial capacity

Current Opinion in Insect Science, Journal Year: 2025, Volume and Issue: unknown, P. 101384 - 101384

Published: May 1, 2025

Language: Английский

Elevated developmental temperatures below the lethal limit reduce Aedes aegypti fertility

Journal of Experimental Biology, Journal Year: 2025, Volume and Issue: 228(3)

Published: Jan. 6, 2025

Aedes aegypti mosquitoes are the principal vectors of dengue and continue to pose a threat human health, with ongoing urbanization, climate change trade all impacting distribution abundance this species. Hot periods becoming increasingly common their impacts on insect mortality have been well established, but they may even greater fertility. In study, we investigated high temperatures Ae. fertility both within across generations. Mosquitoes developing under elevated exhibited higher critical thermal maxima (CTmax), reflecting developmental acclimation, declined increasing temperature. females, decreased fecundity while in males it tended decrease proportion eggs that hatched individuals producing viable offspring. Rearing sexes at 35°C increased subsequent generation effects persisted gonotrophic cycles same generation. Moreover, exposure adults further beyond temperature alone. These findings highlight sub-lethal plastic responses stress This has significant implications for predicting mosquito populations thriving warmer environments.

Language: Английский

Intra‐species quantification reveals differences in activity and sleep levels in the yellow fever mosquito, Aedes aegypti

Medical and Veterinary Entomology, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 19, 2024

Abstract Aedes aegypti is an important mosquito vector of human disease with a wide distribution across the globe. Climatic conditions and ecological pressure drive differences in biology several populations this species, including blood‐feeding behaviour competence. However, no study has compared activity and/or sleep among different populations/lineages Ae. . Having recently established sleep‐like states three species observable timing amount we investigated levels 17 lines drawn from both its native range Africa invasive global tropics. Activity monitoring indicates that all show consistent diurnal activity, but significant level, amount, number bouts bout duration were observed lines. The variation day was associated host preference ancestry for lineages collected Africa. This provides evidence profiles are consistent, there population interactions may significantly impact activity.

Language: Английский