Dieldrin Susceptibility: Partial Restoration in Anopheles Selected with a Carbamate

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Science  19 Apr 1963:
Vol. 140, Issue 3564, pp. 301-302
DOI: 10.1126/science.140.3564.301


Selection of dieldrin-resistant Anopheles albimanus Wied. and normal Culex pipiens quinquefasciatus Say with m-isopropylphenyl methylcarbamate for 21 and 30 generations, respectively, resulted only in vigor tolerance to this and other aryl methylcarbamates. However, it caused substantial restoration of dieldrin- and DDT-susceptibility in Anopheles by increasing the frequency of homozygous susceptible phenotypes from 10 to 83 percent.