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Finding genetic markers for complex phenotypic traits in parasites

A J Lymbery1

  • 1Western Australian Department of Agriculture, Bunbury, Australia.

International Journal for Parasitology
|January 1, 1996
PubMed
Summary

Identifying genetic markers for complex traits in parasites aids disease control. This review details strategies for finding these markers and analyzing their association with traits using statistical methods.

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Area of Science:

  • Genetics
  • Parasitology
  • Epidemiology

Background:

  • Genetic identification and mapping of parasite genes influencing epidemiological traits offers significant benefits for disease control.
  • Complex quantitative traits in parasites pose challenges for genetic analysis.

Purpose of the Study:

  • To review strategies for identifying genetic markers associated with complex quantitative traits in parasites.
  • To outline methods for analyzing the association and linkage between genetic markers and quantitative trait loci.

Main Methods:

  • Candidate and random marker selection strategies are discussed.
  • Association studies compare trait values across marker genotypes in populations.
  • Linkage studies analyze trait values within families or segregating populations.

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  • Least-squares and maximum likelihood methods are commonly used for statistical analysis.

    • Main Results:

    • Strategies for identifying genetic markers linked to quantitative trait loci are presented.
    • Analytical methods like least-squares and maximum likelihood are detailed for association and linkage studies.
    • Considerations for minimizing statistical errors in multiple testing scenarios are highlighted.

    Conclusions:

    • Effective identification and mapping of parasite genes are crucial for parasitic disease control.
    • Understanding genetic markers for quantitative traits can inform targeted control strategies.
    • Robust statistical methods are essential for accurate genetic association and linkage analysis.