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Parentage analyses in ant colonies using simple sequence repeat loci

J D Evans1

  • 1Department of Biology, University of Utah, Salt Lake City 84112.

Molecular Ecology
|December 1, 1993
PubMed
Summary
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Parentage in Myrmica ants can be determined using highly variable simple sequence repeat (SSR) markers. These genetic markers are effective for identifying offspring origins and understanding reproductive strategies in complex ant colonies.

Area of Science:

  • Entomology
  • Genetics
  • Ecology

Background:

  • Ant colonies, particularly in the genus Myrmica, exhibit complex reproductive structures.
  • Female offspring can have multiple mothers (queens), and both workers and queens can produce male offspring.

Purpose of the Study:

  • To develop and validate genetic methods for assigning parentage in Myrmica ants.
  • To identify specific genetic markers suitable for resolving complex colony structures.

Main Methods:

  • Isolation and screening of polymorphic dinucleotide simple sequence repeat (SSR) loci.
  • Utilizing three independent loci (Myrt2, Myrt3, Myrt4) for genotypic analysis.

Main Results:

  • High expected heterozygosities were observed for the identified loci (Myrt2: 0.94, Myrt3: 0.92, Myrt4: 0.95).

Related Experiment Videos

  • These SSR loci are sufficient for establishing parentage in most screened Myrmica colonies.
  • Initial findings suggest worker ants in Myrmica 'near tahoensis' produce male offspring.

    • Conclusions:

    • Simple sequence repeat markers provide a powerful tool for understanding reproductive dynamics in Myrmica ants.
    • The developed genetic methods can resolve complex parentage scenarios within ant colonies.
    • Worker-driven male production is confirmed in at least one Myrmica species.