บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Effect of temperature and treatment conditions on the mortality of Epiphyas postvittana (Lepidoptera: Tortricidae) exposed to ethanol.

Dentener, P.R., Lewthwaite, S. E., Bennett, K. V., Maindonald, J. H., and Connolly, P. G.

Journal of Economic Entomology. Volume 93, Number 2, Apr 2000. Pages 519-525.

2000

บทคัดย่อ

Effect of temperature and treatment conditions on the mortality of Eiphyas postvittana (Lepidoptera: Tortricidae) exposed to ethanol.

Mortality responses were determined for 5th-instar lightbrown apple moth, Epiphyas postvittana (Walker), in the presence and absence of apples to immersion in ethanol solutions and exposure to ethanol vapor at a range of concentrations, treatment times, and temperatures. Ethanol may have caused an initial knock-down effect in E. postvittana larvae because there was a trend for larval mortality to reduce with increased periods between treatment and assessment time when immersed at 20 degrees C in 30 or 50% ethanol solutions. Mortality for larvae immersed on apples in a range of ethanol concentrations was higher than for larvae in the absence of apples. Increasing treatment temperature from 20 to 45 degrees C during ethanol immersion significantly increased larval mortality. During ethanol vapor exposure, longer treatment times were required to achieve 99% E. postvittana mortality for larvae on apples compared with those in the absence of apples.