Parasitism capacity of Trichogramma pretiosum Riley Hymenoptera Trichogrammatidae reared under different temperatures on Bonagota salubricola Meyrick Lepidoptera Tortricidae eggs
Pastori, P.L.; Monteiro, L.B.; Botton, M.; Pratissoli, D.
Neotropical Entomology 36.6 (November-December): 926-931
ISSN/ISBN: 1519-566X Accession: 037452693
The parasitism capacity of Trichogramma pretiosum Riley strain bonagota on Bonagota salubricola (Meyrick) eggs was studied under the temperatures of 18, 20, 22, 25, 28, 30 and 32deg. C. The number of days with parasitism, accumulated parasitism, total number of eggs parasitized per female and parasitoid longevity was evaluated. In the first 24h, parasitism ranged from 1.6 (32deg. C) to 8.8 (22deg. C) eggs of B. salubricola. Accumulated egg parasitism of B. salubricola reached 80% in 1st to 4th day at 20deg. C to 32deg. C, respectively, and in the 711 day at 18deg. C. Temperatures from 18deg. C to 22deg. C were the best suited for the total eggs parasitized for female, resulting in 35.4 and 24.6 eggs/male respectively. T. pretiosum female longevity ranged from 7.8 to 2.5 days, at 18 C and 32 C, respectively. The results showed that T. pretiosum strain bonagota is better adapted to temperatures from 18deg. C to 22deg. C.