Sp. Tripathi et Mk. Pandey, EFFECT OF TEMPERATURE ON LENGTH OF DEVELOPMENT PERIOD AND PERCENT EMERGENCE OF PARASITOID DIAERETIELLA-RAPAE (MINTOSH) (HYMENOPTERA, APHIDIIDAE), Journal of advanced zoology, 15(2), 1994, pp. 76-78
The developmental rate from oviposition to emergence of parasitoid D.
rapae vary along with the change of temparature on constant relative h
umidity 50 +/- 5%. The adults emerged out from mummies in 19 days at 1
5 degrees C, 16 days at 20 degrees C, 15 days at 25 degrees C and 10 d
ays at 30 degrees C. The percentage of emergence is also linked with t
he temperature variation. The highest emergence percentage (90.24%) no
ticed at 25 degrees C and lowest at (72.50%) at 30 degrees C.