Thermal requirements of Trichogramma pretiosum (Hymenoptera: Trichogrammatidae) lines in Neoleucinodes elegantalis (Lepidoptera: Crambidae) eggs

This study aimed to evaluate the impact of temperature on development two lines Trichogramma pretiosum (Hymenoptera: Trichogrammatidae), determine thermal requirements this parasitoid wasp Neoleucinodes elegantalis (Lepidoptera: Crambidae) eggs. The experiment was carried out with (“Ubajara” and “Guaraciaba”, Ceará State) T. collected naturally parasitizing eggs N. in tomato (Solanum lycopersicum) fruits. In experiment, 40 host 4 females parasitoids were used, exposure parasitism for 24 hours at 25 ± 1 °C, relative humidity 70 10 %, 12-h photophase. At end period, removed tubes transferred incubators (RH = %; photophase), exposed 15, 20, 25, 30, or 35 until emergence following generation parasitoids. percentage emergence, sex ratio, number that emerged per egg, cycle duration assessed. experiments set up a completely randomized experimental design 5 treatments (temperatures) 12 replicates. ANOVA conducted means compared by Tukey test (P < 0.05). base temperatures 10.77 °C 10.86 generations year 33.29 35.63 “Ubajara” respectively. showed changed biological parameters, “Guaraciaba” decreased as increased.