Which control measure targets the immature life stage of mosquitoes?

Which control measure targets the immature life stage of mosquitoes?

• A. Larviciding
• B. Adulticiding
• C. Surveillance
• D. Source reduction

Answer: (A)

Targeting the immature life stage means intervening where mosquitoes are still larvae in the water. The mosquito life cycle includes eggs hatching into aquatic larvae, then pupae, and finally adults. Larviciding directly kills those larvae in their aquatic habitats, preventing them from developing into adults. This makes larviciding the most direct way to reduce the population before mosquitoes reach adulthood. Adulticiding acts on flying adults, not the larvae. Surveillance is focused on monitoring mosquito presence and activity rather than reducing the immature population. Source reduction removes or blocks breeding sites, which lowers the number of places larvae can develop, but it doesn’t directly kill larvae that are already present.

Targeting the immature life stage means intervening where mosquitoes are still larvae in the water. The mosquito life cycle includes eggs hatching into aquatic larvae, then pupae, and finally adults. Larviciding directly kills those larvae in their aquatic habitats, preventing them from developing into adults. This makes larviciding the most direct way to reduce the population before mosquitoes reach adulthood.

Adulticiding acts on flying adults, not the larvae. Surveillance is focused on monitoring mosquito presence and activity rather than reducing the immature population. Source reduction removes or blocks breeding sites, which lowers the number of places larvae can develop, but it doesn’t directly kill larvae that are already present.