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Ross KG, Shoemaker DD. AN UNUSUAL PATTERN OF GENE FLOW BETWEEN THE TWO SOCIAL FORMS OF THE FIRE ANT SOLENOPSIS INVICTA. Evolution. 1993;47(5):1595-1605doi: 10.1111/j.1558-5646.1993.tb02178.x.
Ross, K. G., & Shoemaker, D. D. (1993). AN UNUSUAL PATTERN OF GENE FLOW BETWEEN THE TWO SOCIAL FORMS OF THE FIRE ANT SOLENOPSIS INVICTA. Evolution; international journal of organic evolution, 47(5), 1595-1605. https://doi.org/10.1111/j.1558-5646.1993.tb02178.x
Ross, Kenneth G, and Shoemaker, D DeWayne. "AN UNUSUAL PATTERN OF GENE FLOW BETWEEN THE TWO SOCIAL FORMS OF THE FIRE ANT SOLENOPSIS INVICTA." Evolution; international journal of organic evolution vol. 47,5 (1993): 1595-1605. doi: https://doi.org/10.1111/j.1558-5646.1993.tb02178.x
Ross KG, Shoemaker DD. AN UNUSUAL PATTERN OF GENE FLOW BETWEEN THE TWO SOCIAL FORMS OF THE FIRE ANT SOLENOPSIS INVICTA. Evolution. 1993 Oct;47(5):1595-1605. doi: 10.1111/j.1558-5646.1993.tb02178.x. PMID: 28564912.
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Evolution. 1993 Oct;47(5):1595-1605. doi: 10.1111/j.1558-5646.1993.tb02178.x.

AN UNUSUAL PATTERN OF GENE FLOW BETWEEN THE TWO SOCIAL FORMS OF THE FIRE ANT SOLENOPSIS INVICTA.

Evolution; international journal of organic evolution

Kenneth G Ross, D DeWayne Shoemaker

Affiliations

  1. Department of Entomology, University of Georgia, Athens, Georgia, 30602-2603.

PMID: 28564912 DOI: 10.1111/j.1558-5646.1993.tb02178.x

Abstract

Uncertainty over the role of shifts in social behavior in the process of speciation in social insects has stimulated interest in determining the extent of gene flow between conspecific populations differing in colony social organization. Allele and genotype frequencies at 12 neutral polymorphic protein markers, as well as the numbers of alleles at the sex-determining locus (loci), are shown here to be consistent with significant ongoing gene flow between two geographically adjacent populations of Solenopsis invicta that differ in colony queen number. Data from a thirteenth protein marker that is under strong differential selection in the two social forms confirm that such gene flow occurs. Data from this selected locus, combined with knowledge of the reproductive biology of the two social forms, further suggest that interform gene flow is largely unidirectional and mediated through males only. This unusual pattern of gene flow results from the influence of the unique social enviroments of the two forms on the behavior of workers and on the reproductive physiology of sexuals.

© 1993 The Society for the Study of Evolution.

Keywords: Fire ants; Solenopsis invicta.; gene flow; monogyny; polygyny; social forms

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