บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Use of colorimetry and mass spectrometry to determine the effects of controlled atmospheres on aphid metabolism.

Carpenter, A., Downes, C., Patterson, J. and Hanson, L.

Postharvest Horticulture Series - Department of Pomology, University of California Year: 1997 Issue: No. 15 Pages: 123-125

1997

บทคัดย่อ

Use of colorimetry and mass spectrometry to determine the effects of controlled atmospheres on aphid metabolism.

The use of isothermal calorimetry as a tool to elucidate the effects of controlled atmospheres on insect metabolic heat production is discussed, with consideration of work carried out on green peach aphid (Myzus persicae). Test CA's were air, 60% carbon dioxide, 0.1% oxygen, 0.5% oxygen and 1% oxygen (all balance nitrogen), at temperatures between 0 and 50 deg C. Response surfaces were developed to demonstrate how metabolic heat production was affected by exposure to a wide range of temperatures, giving a relative measure of how much stress a treatment causes to a test organism. Treatment with 0.1% oxygen reduced metabolic heat production to a very low level such that it was very close to the margin of error for the calorimeter. Higher levels of oxygen had lesser effects on metabolic heat production. Elevated carbon dioxide had less impact on metabolic heat production. Alate green peach aphid were more tolerant of low temperatures than were the apterate insects.