Hereditary Basis of Adult Color Polymorphism in the Southern Green Stink Bug, Nezara viridula LINNE (Heteroptera: Pentatomidae).

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Polymorphism in the color types of the southern green stink bug Nezara viridula was studied to elucidate the hereditary basis. Out of many known color types of the species, three basic types were found in the field in Gazipur, Bangladesh; among which the frequency of G-type (f. smaragdula FABR.) was most abundant and was followed by that of O-type (f. torquata FABR.) and R-type (f. viridula L.). During the course of this study, new intermediate types were obtained in the laboratory. OR- and OY-type were regarded respectively as the intermediate type between O- and R-type, and between O- and Y-type (f. aurantica COSTA), based on the body color of adults. In contrast to the entirely green coloration of G-type, other types have yellow or orange coloration over parts or the entirety of the body. By using the types other than OY, the lineage of each was maintained up to the 5th generation, and crossing experiments were conducted. The relative abundance of different color types produced by the experiments coincides well with the ratio expected from the assumption that two sets of genes governing the color types exist on two independent loci. The assumed genotypes are as follows: G-type, a/a b/b; O-type A/- b/b; R-type a/a B/-; OR-type A/- B/-.
日本応用動物昆虫学会の論文