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AMBROISE DALECKY LAURENCE GAUME BERTRAND SCHATZ DOYLE MCKEY FINN KJELLBERG 《Biological journal of the Linnean Society. Linnean Society of London》2005,86(2):133-151
In polygynous ants it has been proposed that the coexistence of several queens in a colony evolved as a response to ecological, social and genetic parameters. We present demographic, histological and genetic data showing that the plant-ant Petalomyrmex phylax is facultatively and secondarily polygynous. Polygyny is functional, lowers the reproductive output per queen, and is a kin-selected trait as new queens accepted in polygynous colonies are highly related females that never left their natal colony. The degree of polygyny varies according to a geographical gradient. Northern colonies can be strongly polygynous, while at the southern edge of the species' distribution, colonies are almost exclusively monogynous. However, ecological studies of the host-plant populations revealed that this cline could not be explained by variations in the degree of nest site limitation. We discuss selective costs and benefits associated with these social structures, and propose that this cline may result from historical processes such as selection of a more dispersive strategy along a colonization front. © 2005 The Linnean Society of London, Biological Journal of the Linnean Society , 2005, 86 , 133–151. 相似文献
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AMBROISE DALECKY STEVEN M. BOGDANOWICZ ERIK B. DOPMAN DENIS BOURGUET RICHARD G. HARRISON 《Molecular ecology resources》2006,6(3):945-947
Primer sequence and polymorphism data are presented for 13 microsatellite loci isolated from the European corn borer moth, Ostrinia nubilalis, as part of a project to construct a linkage map for the two pheromone strains. Experimental conditions are described for polymerase chain reaction (PCR) multiplexing, which allows genotyping in two electrophoresis runs of eight and five markers each. In a sample of 27 individuals coming from one European locality, the number of alleles per locus ranged from one to 12, and gene diversity from 0 to 0.859. Seven loci showed a deficit of heterozygotes. Eleven loci cross‐amplify in the related Ostrinia furnacalis. 相似文献
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