Susceptibility of Cotton Bollworm, Helicoverpa Zea, Collected From Genuity VT3 PRO Field Corn on Dual-Gene Transgenic Cotton

Bollworm larvae were collected from Non-Bt and VT3P field corn. Larvae were evaluated on fitness costs of pupal duration and pupal weight. Reciprocal crosses were arranged to determine dose mortality curves for neonate larvae on lyophilized Bollgard II cotton. Male bollworm larvae collected from VT3P had a longer pupal duration compared to males collected from Non-Bt. Female pupal duration did not significantly differ. All larvae collected from VT3P had higher pupal weights than larvae collected from Non-Bt. Progeny from females reared on VT3P had higher LC50 values compared to progeny resulting from females reared on Non-Bt regardless of paternal host.