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A New Report of Nezara viridula f. aurantiaca (Heteroptera: Pentatomidae) from a Cultured Population in Washington County, Mississippi

Maria Guadalupe Rojas, Juan A. Morales Ramos
Journal of insect science 2017 v.17 no.1 pp. 1-3
Nezara viridula, adults, alleles, color, crossing, egg masses, females, hybrids, males, phenotype, progeny, reproductive performance, Mississippi
Nezara viridula adult coloration can vary, including a rare orange-colored type (i.e., N. viridula f. aurantiaca). In November 2015, three Nezara viridula males displaying orange coloration were found in an established colony in Stoneville, MS. The objectives of this study were to determine if alleles of these orange types conformed to the allele characteristics previously reported for N. viridula f. aurantiaca and to determine if there were any differences in reproductive output compared with the green-colored type. The three orange-type males were crossed with green-type females to produce a hybrid F1. The F1 progeny was allowed us to cross to produce an F2. The F2 progeny consisted of 672 green females, 351 green males, 298 orange males, and 0 orange females. These ratios did not differ significantly from the expected 50:25:25:0 ratios for a single recessive sex linked allele for color phenotype. The F2 cross of green females and orange males produced an F3 consisting of 345 green females, 346 green males, 100 orange females, and 85 orange males. These ratios also conformed to the expected ratios (0.375:0.375:0.125:0.125) with the exception of orange males, which numbers were slightly lower than expected. The pure orange type N. viridula produced significantly less egg masses (0.7160.15) per day than green types (2.0960.16) and their reproductive output, measured as net reproductive rate (Ro), was lower in orange (13.71) compared with green (20.67) types.