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Esterases in the house fly. Polymorphisms and inheritance patterns.

S Narang, A C Terranova, I C McDonald

    The Journal of Heredity
    |January 1, 1976
    PubMed
    Summary
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    Esterase variability in house flies (Musca domestica L.) was analyzed using polyacrylamide gel electrophoresis. This study identified numerous esterase loci and alleles, suggesting their utility in understanding house fly population dynamics.

    Area of Science:

    • * Genetics
    • * Molecular Biology
    • * Entomology

    Background:

    • * Understanding genetic variation is crucial for pest management.
    • * Esterases are enzymes known to exhibit genetic polymorphism.
    • * House flies (Musca domestica L.) are significant agricultural and disease vectors.

    Purpose of the Study:

    • * To investigate the genetic variability and inheritance patterns of esterases in five strains of Musca domestica L.
    • * To identify the number and distribution of esterase loci across different zones.
    • * To determine the utility of esterases in population genetics studies of house flies.

    Main Methods:

    • * Polyacrylamide gel electrophoresis (PAGE) was employed to analyze esterase isozymes.
    • * Zymograms were analyzed to identify and characterize esterase bands.

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  • * Banding patterns were correlated across generations (P1-F1) to infer inheritance.

    • Main Results:

    • * Individual zymograms showed 8 to 15 esterase bands across five zones (A-E).
    • * Genetic analysis revealed at least 3 loci in zone A, 2 each in B and C, and 4 in D.
    • * Eight loci had null alleles, and six loci exhibited codominant alleles; only Es-5 in zone C was monomorphic.

    Conclusions:

    • * Esterase enzyme systems in Musca domestica L. are highly polymorphic.
    • * The identified esterase loci and alleles provide valuable genetic markers.
    • * Esterases are potentially useful for assessing genetic relationships and population dynamics in house fly populations.