Enzyme variation in the grasshopper Chorthippus brunneus (Thunberg)

Forty-two populations of the grasshopper Chorthippus brunneus from four different areas were scored for polymorphism at 15 enzyme loci. The areas sampled were Nottinghamshire, inland Essex, the Essex coast and Dovedale in Derbyshire. Five loci were found to be polymorphic (isocitrate dehydrogenase (2), malate dehydrogenase, glyceroI-3-phosphate dehydrogenase and phosphoglucomutase) but levels of heterozygosity were generally low. Differences in enzyme variation between different areas were demonstrated using multivariate analysis.