European Journal of Entomology, January 1st, 2005
Key words. Central-marginal distribution, chiasmata, Dichroplus, latitudinal gradient, morphological variability, recombination, Robertsonian translocation
Abstract. The grasshopper Dichroplus pratensis Bruner is polymorphic and polytypic for a complex Robertsonian system. In this species, centric fusions induce changes in number and position of chiasmata, and thus potentially affect intrachromosomal genetic recombination and genetic variability. Males and females, from 23 populations covering most of the geographic range of the species and spanning 22 degrees of latitude, were studied. We an...
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