Insecticide of choice for sandfly ?: (A) DDT, (B) HCH, (C) Maiathione, (D) Parisgreen
Answer is A. Ans. is 'a' i.e., DDT o Resistance to DDT has not been demonstrated in sandflieso A single application of DDT or lindane has been found effective in reducing sandflies,o DDT residue may remain effective for a period of 1 to 2 years and lindane only for a period of 3 months.Arthropods showing resistance to DDTArthropods showing no resistance to DDTo Houseflies (e.g., Musca domesticao Moquito (Culex, Anopheles, Aedes)o Flear(rat flea, Sand flea)o Lice (Pediculus capitis/corporis, Phthirus pubis)o Ticks & Miteso Sandltes (Phlebotomus)o Tsetse flies (Gluossianae)