Factors Influencing Adult Emergence from Diapausing Sorghum Midge,Contarinia sorghicola(Diptera: Cecidomyiidae)1
作者:
F. P. Baxendale,
G. L. Teetes,
期刊:
Environmental Entomology
(OUP Available online 1983)
卷期:
Volume 12,
issue 4
页码: 1064-1067
ISSN:0046-225X
年代: 1983
DOI:10.1093/ee/12.4.1064
出版商: Oxford University Press
数据来源: OUP
摘要:
Sorghum midge,Contarinia sorghicola(Coquillett) diapause was terminated in the laboratory, and factors affecting adult emergence from diapausing larvae were investigated. Temperatures in the range from 20 to 30°C were optimum for diapause termination and adult emergence. Diapausing larvae exposed to moist conditions at 30°C began to emerge as adults after 12 days of incubation. Based on adult emergence rates per day, an emergence threshold temperature was estimated to be 14.8°C. Exposure to 12 to 13 days of continuous moisture at 30°C was essential for diapause termination and adult emergence. Moisture acted to initiate diapause termination, but diapausing larvae were unable to accumulate shorter periods of moisture toward the 12- to 13-day requirement. Photoperiod had no significant effect on the termination of larval diapause.
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