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The Journal of Heredity 1982:73(3):209-213
© 1982 The American Genetic Association 73:209-213

research-article

Esterases in the malaria vector mosquito, Anopheles cuilcifacies

Genetic and linkage analyses of an alpha and beta polymorphism

Cursrow J. Dubash, Richard K. Sakai, and Richard H. Baker

Pakistan Medical Research Center, University of Maryland School of Medicine 6 Birdwood Road, Lahore, Pakistan

Please send reprint requests to Dr. Baker, International Health Program, University of Maryland School of Medicine, 10 South Pine Street, Baltimore, Maryland 21201

Abstract

The genetic and linkage analyses of an {alpha} and ß esterase polymorphism in Anopheles cullicifacles are presented. A survey of laboratory strains uncovered four electrophoretic variants for the alpha esterase and two for the beta esterase. Genetic analyses indicated that the variants of the alpha esterase are under the control of codominant alleles of a single locus and that this locus is linked to the locus controlling the expression of the codominant alleles of the beta esterases. The esterases are not linked either to sex (chromosome 1) or to maroon eye (chromosome 2) but to the chromosome 3 markers, dieldrin resistance and phosphoglucomutase. The gene sequence is Est-{alpha}—DI—Pgm—Est-ß and the recombination frequencies are as follows: Est-{alpha}—DI = 2.9 percent; DI—Pgm = 5.8 percent; Pgm—Est-ß = 6.4 percent; Est-{alpha}—Est-ß = 15.1 percent, Est-{alpha}—Pgm = 8.7 percent and DI—Est-ß = 12.2 percent.


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