Isozyme polymorphisms maintained by lethal loci in inbred strains of Aedes triseriatus

We analyzed the progeny of brother-sister matings of two inbred strains of the treehole mosquito, Aedes triseriatus, at several isozyme loci to determine which factors were maintaining heterozygosity at these loci after prolonged inbreeding. The triseriatus Kramer (TK) lines were polymorphic for the...

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Bibliographic Details
Published inThe Journal of heredity Vol. 80; no. 1; p. 53
Main Authors Matthews, T C, Craig, Jr, G B
Format Journal Article
LanguageEnglish
Published United States 01.01.1989
Subjects
Aedes - enzymology
Aedes - genetics
Alcohol Oxidoreductases - genetics
Animals
Chromosome Mapping
Crosses, Genetic
Female
Genes, Lethal
Genetic Linkage
Genotype
Heterozygote
Inbreeding
Isoenzymes - genetics
Male
Mortality
Polymorphism, Genetic
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Summary:We analyzed the progeny of brother-sister matings of two inbred strains of the treehole mosquito, Aedes triseriatus, at several isozyme loci to determine which factors were maintaining heterozygosity at these loci after prolonged inbreeding. The triseriatus Kramer (TK) lines were polymorphic for the Odh and Hbd loci after 12 generations of full-sib mating, and the triseriatus Vero Beach (TV) lines were polymorphic for the Odh, Hk-4, Pgm, and Hbd loci after 14 generations of full-sib mating. Genetic analysis of 22 TK F13 matings and nine TV F15 matings showed that heterozygosity was enforced by lethal loci to which all the polymorphic isozyme loci were linked. The lethal loci formed a balanced lethal system. We determined the relative positions and map distances of lethals and enzyme loci.
ISSN:0022-1503
DOI:10.1093/oxfordjournals.jhered.a110789