Developmental Rates and Emergence of Vegetable Leafminer Pupae and Their Parasites Reared from Celery Foliage

Publisher Website
Google Scholar
Abstract
Vegetable leafminers, L. sativae Blanchard, were reared from 2-14 celery foliage held at different constant temperatures to determine the influence of temperature on pupal development and on host and parasite emergence. Significantly (P .ltoreq. 0.05) greater numbers of leafminer pupae were obtained from celery leaflets held at 32.2.degree. C than at 15.6.degree. C. The percent emergence of adult leafminers was significantly greater (P .ltoreq. 0.05) at the higher rearing temperature (75% emergence above 20.degree. C and 45% emergence below 20.degree. C). Larval parasite emergence [Diglyphus intermedius (Grit.) and Chrysonotomyia formosa (Westwood)] was significantly (P .ltoreq. 0.05) greater at temperatures below 23.degree. C (43%) than at higher temperatures (29%). Leafminer pupal developmental time under constant rearing temperatures increased from 5-7 days at 32.2.degree. C to 21.0 days at 15.6.degree. C. Pupal development required a mean 127.8 degree-days, with an estimated lower threshold temperature of 10.0.degree. C. The degree-day requirements for pupal development were not significantly different at constant rearing temperatures of 15-35.degree. C.

This publication has 1 reference indexed in Scilit: