Differential Hatching, Development, Oviposition, and Longevity Patterns among Colombian Aedes aegypti Populations

Abstract

Dengue, Zika, and chikungunya are arboviral diseases for which there are no effective therapies or vaccines. The only way to avoid their transmission is by controlling the vector Aedes aegypti, but insecticide resistance limits this strategy. To generate relevant information for surveillance and control mechanisms, we determined life cycle parameters, including longevity, fecundity, and mortality, of Colombian Ae. aegypti populations from four different geographical regions: Neiva, Bello, Itagüí, and Riohacha. When reared at 28 °C, Bello had the shortest development time, and Riohacha had the longest. Each mosquito population had its own characteristic fecundity pattern during four gonotrophic cycles. The survival curves of each population were significantly different, with Riohacha having the longest survival in both males and females and Bello the shortest. High mortality was observed in mosquitoes from Neiva in the egg stage and for Bello in the pupae stage. Finally, when mosquitoes from Neiva and Bello were reared at 35 °C, development times and mortality were severely affected. In conclusion, each population has a unique development pattern with an innate trace in their biological characteristics that confers vulnerability in specific stages of development.

Spatial and temporal analysis on the impact of ultra-low volume indoor insecticide spraying on Aedes aegypti household density

“…The life cycle of an Ae. aegypti mosquito from egg to adult can take between 7 to 10 days depending on temperature and mosquito strain [ 49 ]. Residual cypermethrin killing or expelling some of newly emerged and imported adults from unsprayed areas, as well as reduced egg-laying due to the decreased number of adults, could further explain the delayed recovery of the adult mosquito population [ 22 , 50 ].…”

Association of Midgut Bacteria and Their Metabolic Pathways with Zika Infection and Insecticide Resistance in Colombian Aedes aegypti Populations

“…In Colombia, it has been shown that even in geographically close populations there may be differences for Ae. aegypti in vector competence for DENV [ 54 , 55 ] and in hatching, development time, longevity, and fecundity [ 56 ]. This suggests that some specific parameters at the local level, such as bacterial diversity or resistance to insecticides, may be differential and relevant to elucidate the different degrees of transmission of arboviruses.…”

Lessons from the Mass Production of Wolbachia-infected <i>Aedes aegypti</i> for Egg Release in the Sleman and Bantul Districts of Yogyakarta

“…Egg production from each female may vary. In the field, each female can lay between 20-60 eggs, but in the insectary, it can reach up to 100-150 eggs (Clemons et al 2010;Arévalo-Cortés et al 2022). Based on our data, each female can produce approximately 70 eggs in the first gonotrophic cycle (GC1), and it will drop in the 3 rd gonotrophic cycle (GC3) to up to 50 eggs (unpublished result).…”

“…aegypti has a strong interest in human blood. Due to this reason and the quality of the eggs, we allowed one-week-old adult colony to be blood -fed by human volunteers once a week (Gunathilaka et al 2017;Al-Rashidi et al 2022;Arévalo-Cortés et al 2022). One cage was only blood fed by one person.…”