Which genus lays eggs singly on water and is associated with Dengue and Zika?

Which genus lays eggs singly on water and is associated with Dengue and Zika?

• A. Culex
• B. Aedes
• C. Anopheles
• D. Ochlerotatus

Answer: (C)

Dengue and Zika are transmitted by Aedes mosquitoes. A defining feature of this genus is that females lay eggs individually on the sides of water-holding containers, right at the waterline, rather than in floating rafts. The eggs are desiccation-resistant and hatch when the container floods. This single-egg-per-surface behavior helps distinguish Aedes from other genera: Culex lays eggs in rafts on water, and Anopheles also lays eggs on water but is primarily a malaria vector rather than dengue/Zika. Ochlerotatus is closely related and often treated as part of Aedes in many classifications. So, the genus associated with dengue and Zika that lays eggs singly on water is Aedes.

Dengue and Zika are transmitted by Aedes mosquitoes. A defining feature of this genus is that females lay eggs individually on the sides of water-holding containers, right at the waterline, rather than in floating rafts. The eggs are desiccation-resistant and hatch when the container floods. This single-egg-per-surface behavior helps distinguish Aedes from other genera: Culex lays eggs in rafts on water, and Anopheles also lays eggs on water but is primarily a malaria vector rather than dengue/Zika. Ochlerotatus is closely related and often treated as part of Aedes in many classifications. So, the genus associated with dengue and Zika that lays eggs singly on water is Aedes.