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Clonal structure affects the assembling behavior in the Japanese queenless ant Pristomyrmex punctatus
Yudai Nishide1, Toshiyuki Satoh, Tuyosi Hiraoka
1Department of Applied Biological Science, Faculty of Agriculture, Tokyo University of Agriculture and Technology, 3-5-8 Saiwai, Fuchu, Tokyo, Japan.
Die Naturwissenschaften
|June 7, 2007
Summary
Queenless ants Pristomyrmex punctatus exhibit unique social behavior. Their colony assembly depends on genetic structure, with genetically diverse groups less likely to merge.
Area of Science:
- Social Insects
- Behavioral Ecology
- Genetics
Background:
- The queenless ant Pristomyrmex punctatus displays unique reproductive strategies, including worker-based parthenogenesis and cloning.
- Colonies of P. punctatus can be composed of individuals from multiple clonal lines, deviating from typical single-line ant societies.
Purpose of the Study:
- To investigate whether the colony genetic structure influences the "assembling behavior" in the queenless ant Pristomyrmex punctatus.
- To determine if genetically monomorphic versus polymorphic subcolonies exhibit different tendencies to merge into a single nest.
Main Methods:
- Two subcolonies (100 and 200 individuals) were established from a single stock colony of P. punctatus.
- The fusion of genetically monomorphic (single clonal line) and polymorphic (multiple clonal lines) subcolonies into a single nest was observed and analyzed.
Main Results:
- Genetically monomorphic subcolonies consistently fused to form a single, unified nest.
- Genetically polymorphic subcolonies showed a reduced tendency to aggregate and form a single colony.
Conclusions:
- Colony genetic structure significantly impacts social viscosity in the queenless ant P. punctatus.
- This study provides the first evidence that genetic diversity within a colony affects social integration in social insects.
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