Which genus is characterized by night-time biting and resting posture as malaria vectors?

Which genus is characterized by night-time biting and resting posture as malaria vectors?

• A. Aedes – day-biting and container breeding.
• B. Anopheles – night-time biting, malaria vector with resting posture.
• C. Culex – crepuscular/nocturnal and breeding in stagnant water with organic matter.
• D. Anopheles – crepuscular biting.

Answer: (B)

The key idea is that malaria is transmitted by Anopheles mosquitoes, which have two distinctive traits: they mainly bite at night, and after feeding they rest with their bodies held at an angle to the surface. This nocturnal biting pattern helps explain why bed nets are a powerful control tool, and the resting posture is a feature used to identify them in the field. Aedes mosquitoes, by contrast, tend to bite during the day and are known for container breeding; Culex may be active around dusk and dawn and breed in stagnant water with organic matter. The description of night-time biting paired with a resting posture points to Anopheles as the malaria vector.

The key idea is that malaria is transmitted by Anopheles mosquitoes, which have two distinctive traits: they mainly bite at night, and after feeding they rest with their bodies held at an angle to the surface. This nocturnal biting pattern helps explain why bed nets are a powerful control tool, and the resting posture is a feature used to identify them in the field. Aedes mosquitoes, by contrast, tend to bite during the day and are known for container breeding; Culex may be active around dusk and dawn and breed in stagnant water with organic matter. The description of night-time biting paired with a resting posture points to Anopheles as the malaria vector.