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The Journal of Heredity 1984:75(2):117-120
© 1984 The American Genetic Association 75:117-120

research-article

Genetics of speciation within the Polistes fuscatus species complex

R. A. Metcalf, J. C. Marlin, and G. S. Whitt

Department of Entomology, University of Illinois Urbana
Department of Genetics and Development, University of Illinois Urbana, IL 61801

Please address reprint requests to Dr. Whitt

Abstract

Analysis of isozyme data shows that the Polistes fuscatus varieties variatus, metricus, apachus, and rubiginosis are reproductively isolated from each other. The average genetic identity (I) between P. fuscatus group sibling species was found to be 0.92 with a maximum I of 0.996 between P. variatus and P. metricus. I between structural species was 0.426. Observed heterozygosity values for P. metricus, 0.073, and P. variatus, 0.065, were consistent with the low level of genetic variability in the haplodiploid Hymenoptera reported elsewhere. The results indicate rapid recent speclation in the P. fuscatus species group despite haplodiploidy and low levels of variability.


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