Experimental Conversion of Colony Social Organization in Fire Ants (Solenopsis invicta): Worker Genotype Manipulation in the Absence of Queen Effects

@article{Gotzek2008ExperimentalCO,
  title={Experimental Conversion of Colony Social Organization in Fire Ants (Solenopsis invicta): Worker Genotype Manipulation in the Absence of Queen Effects},
  author={Dietrich Gotzek and Kenneth G. Ross},
  journal={Journal of Insect Behavior},
  year={2008},
  volume={21},
  pages={337-350}
}
Colony social organization in the fire ant Solenopsis invicta appears to be under strong genetic control. In the invasive USA range, polygyny (multiple queens per colony) is marked by the presence of the Gp-9b allele in most of a colony’s workers, whereas monogyny (single queen per colony) is associated with the exclusive occurrence of the Gp-9B allele. Ross and Keller, Behav Ecol Sociobiol 51:287–295 (2002) experimentally manipulated social organization by cross-fostering queens into colonies… Expand

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GENETIC REGULATION OF COLONY SOCIAL ORGANIZATION IN FIRE ANTS: AN INTEGRATIVE OVERVIEW
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Information that reveals the links between molecular variation, individual phenotype, and colony‐level behaviors, combined with behavioral models that incorporate details of the chemical communication involved in regulating queen number, will yield a novel integrated view of the evolutionary changes underlying a key social adaptation. Expand
Behavioral Discrimination between Monogyne and Polygyne Red Fire Ants (Hymenoptera: Formicidae) in their Native Range
TLDR
Assessment of discrimination behaviors of both polygynous and monogynous forms of the red fire ant, Solenopsis invicta Buren, during symmetrical interactions in neutral arenas identified monogyne and polygyne forms of S.invicta colonies in concordance with current measures, including number of queens and expression of the Gp-9 gene. Expand
Social chromosome variants differentially affect queen determination and the survival of workers in the fire ant Solenopsis invicta
TLDR
Evidence is found that the Sb variant of the social chromosome increases the likelihood of female brood to develop into queens and that adult SB/Sb workers, the workers that cull SB/ SB queens, are overrepresented in comparison to SB/SB workers. Expand
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Molecular Variation at a Candidate Gene Implicated in the Regulation of Fire Ant Social Behavior
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No single b-like residue is completely predictive of polygyne behavior and, thus, potentially causally involved in its expression, so naturally occurring variation at Gp-9 in fire ants is described, and several unique alleles bearing various combinations of b- like and B-like codons are found. Expand
Unexpected patterns of segregation distortion at a selfish supergene in the fire ant Solenopsis invicta
TLDR
The data confirm the prediction that the Sb supergene in the fire ant Solenopsis invicta is a selfish genetic element capable of biasing its own transmission during reproduction, yet counterselection for suppressor loci evidently has produced an evolutionary stalemate in TRD between the variant homologous haplotypes on the “social chromosome”. Expand
Male reproductive fitness and queen polyandry are linked to variation in the supergene Gp-9 in the fire ant Solenopsis invicta
TLDR
It is shown that both male reproductive success and facultative polyandry in queens have a simple genetic basis and are dependent on male Gp-9 genotype, and how strong worker-induced selection acting to maintain the G p-9b allele in the polygyne social form may simultaneously result in reduced reproductive fitness for individual sexual offspring. Expand
Has gene expression neofunctionalization in the fire ant antennae contributed to queen discrimination behavior?
TLDR
It is hypothesized that the alternate worker genotypes sense queens differently because of the evolution of differential expression of key genes in their main sensory organ, the antennae, and sequenced RNA from four replicates of pooled antennae from three classes of workers identified 81 differentially expressed protein‐coding genes with 13 encoding potential chemical metabolism or perception proteins. Expand
Is Increased Resistance to Parasitism at the Origin of Polygyny in a Mexican Population of the Ant Ectatomma tuberculatum (Hymenoptera: Formicidae)?
TLDR
Eucharitid wasps and mermithid nematodes that attack the only known Mexican polygynous population of E. tuberculatum in Veracruz, Mexico suggest that the hypothesis of an increased resistance to parasites and parasitoids as one of the factors responsible for the emergence of polygyny in E. tuberculosis populations does not apply. Expand
Current Status of a Model System: The Gene Gp-9 and Its Association with Social Organization in Fire Ants
TLDR
It is concluded that there are no new reasons to question the existing consensus view of the Gp-9 system outlined in Gotzek and Ross (2007), and available information on insect OBPs, the family of proteins to which GP-9 belongs, and on pheromonal/behavioral control of fire ant colony queen number fails to support this view. Expand
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GENETIC REGULATION OF COLONY SOCIAL ORGANIZATION IN FIRE ANTS: AN INTEGRATIVE OVERVIEW
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Information that reveals the links between molecular variation, individual phenotype, and colony‐level behaviors, combined with behavioral models that incorporate details of the chemical communication involved in regulating queen number, will yield a novel integrated view of the evolutionary changes underlying a key social adaptation. Expand
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