Storage, Manipulation of Emergence, and Estimation of Numbers of Trichogramma pretiosum123
- 1 June 1974
- journal article
- Published by Oxford University Press (OUP) in Environmental Entomology
- Vol. 3 (3) , 505-507
- https://doi.org/10.1093/ee/3.3.505
Abstract
Laboratory experiments indicated that last-day pupae of the braconid parasite Trichogramma pretiosum Riley can be stored at 16.7°C from 4–10 days without detrimental effects on emergence, and up to 12 days if temperature is decreased to 15°C on the 6th day of storage. After such storage, an average of 93% of the adults emerged within 4 h at 26.7°C under a variety of light intensities. A sampling study showed that the number of T. pretiosum adults produced on individual rearing cards could be estimated within 6% of the actual mean by selective sampling of 0.65% of the material.Keywords
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