The genes TR, Ost, ProR, and L in natural populations of Melanoplus sanguinipes

Several North American populations of the migratory grasshopper, Melanoplus sanguinipes (F.), were screened for variation at the loci, TR, Ost, ProR, and L; these are associated, respectively, with tibiae color, femoral stripe, pronotum color, and lactic acid dehydrogenase allozymes (LDH). The most common LDH allele, L2, is uniformly frequent over all sites; TR and Ost show considerable geographical variation, while allele, ProR, is rare or absent in all sampled areas. There is very little evidence of linkage disequilibrium between pairs of loci.