Florida Entomologist (2016) 99, 566-568

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Kendra Saddoris, Ann H. Fritz and Gary N. Fritz (2016)
Evidence of selective mating and triploidy among two social forms of Solenopsis invicta (Hymenoptera: Formicidae)
Florida Entomologist 99 (3), 566-568
Abstract: A number of important behavioral and physiological traits distinguish both social forms of Solenopsis invicta Buren (Hymenoptera: Formicidae) and correlate with the Gp-9 locus within a supergene complex. These traits include fat body content, number of colony queens, dispersal, ability to initiate new colonies, size of workers, selective mortality, etc. Previous studies suggested gene flow between both social forms is unidirectional, with monogyne males mating almost exclusively with polygyne females. This study examined the genotypes of queens and their stored sperm during a mating flight in Florida where polygyne colonies predominate, and provides evidence of non-random mating; 84.6% of inseminated polygyne queens were mated to males of their own social form, and 92.4% of inseminated monogyne queens were mated by haploid males from monogyne colonies. Fertile, diploid males with unreduced sperm may be a cause for the high frequency of triploid BB alates (26.7%) and triploid polygyne alates (33.3%), and for some portion of all alates storing sperm that exhibited 2 microsatellite alleles (15.8%).
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Full text of article
Database assignments for author(s): Gary N. Fritz, Ann H. Fritz

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Solenopsis invicta U.S.A. (SE)