All of the following methods are antilarval measures except -: (A) Intermittent irrigation, (B) Paris green, (C) Gambusia affinis, (D) Malathion
Answer is D. Antilarval measures of mosquito control are environmental control- source reduction and minor engineering measures like filling, levelling, intermittent irrigation. chemical control- mineral oils, Paris green, synthetic insecticides (Fenthion, Chlorpyrifos, and Abate). biological control -larvivorous fishes like Gambusia and Lebister are grown in burrow pits, ponds. Park's Textbook of Preventive and Social Medicine, 25th Edition, Pg 833