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Phenotypic and Genotypic Characters Associated with the Polygyne Hybrid Imported Fire Ant
- Abstract::
- A study was initiated to identify the origin of polygyny in the hybrid imported fire ant (Solenopsis invicta × richteri) and to confirm the association of polygyne phenotypic and genotypic characters. Polygyny is known to occur in both species in their native ranges in South America. Gp-9, a major gene in imported fire ants, is associated with the expression of social form. Variants of the monogyne allele, Gp-9B, and the polygyne allele, Gp-9b, have been sequenced for both species. The association of phenotypic and genotypic characters in a hybrid imported fire ant colony is strongly indicated by identification of multiple inseminated queens in a colony and sequencing the critical 1.6-kb region of Gp-9 in hybrid individuals with a polygyne allele. A 99.6% match of the Gp-9b allele and concordance in the critical amino acid substitutions of the Gp-9 locus in the hybrid fire ant with S. invicta Buren provides evidence that polygyny in the hybrid imported fire ant is derived from this fire ant species.
- Author(s):
-
Garlapati, R.B. , Cross, D.C. , Caprio, M.A. , Sabanadzovic, S. , Chen, J.
- Subject(s):
-
Solenopsis invicta , Solenopsis richteri , invasive species , fire ants , hybrids , insect colonies , queens , polygyny , insect behavior , social behavior , genetic variation , amino acid substitution , phenotypic variation , Mississippi
- Description:
- Includes references
- Source:
- Midsouth Entomologist 2010 Feb., v. 3, no. 1
- Language:
- English
- Year:
- 2010
- Collection:
-
Journal Articles, USDA Authors, Peer-Reviewed
- File:
-
Download [PDF]
- Rights:
- Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.
