Genetic distance between pheromone strains of the European corn borer, Ostrinia nubilalis: Different contribution of variable substrate, regulatory and non regulatory enzymes

Genetic divergence between two forms of Ostrinia nubilalis, which were characterized by a different composition of the sex pheromone, was studied on the basis of 30 gene-enzyme systems. Nei's measure of standard genetic distance between the forms was D = 0·024, strikingly different from the value of D = 0·002 previously obtained by Harrison and Vawter on 10 enzyme loci between populations genetically homogeneous with those presently studied. In...