コナマダラメイガの生態と防除に関する研究 : I.孵化に及ぼす減圧の影響について

概要

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The almond moth, Ephestia cautella WALKER, is a serious pest of various stored grains and other foods. The effects of reduced air pressure and number of days of treatment on hatching at the temperature of 25℃ were studied in the present paper. 20 eggs and 0.25g of milk cocoa were put in each test-tube totaling up to 99 test-tubes. They were divided into three groups of 190,380 and 760 mm-Hg pressures. Three test-tubes were taken out of each group after 1,2,3,5,7,9,11,14,17,20 and 23 days respectively, bringing them back to the normal pressure, and their number of the eggs hatched was determined and continued to be counted until the number of hatch stopped to increase. The results of the experiment were as follows : While a significant difference of haching rate was shown between the samples treated under 380 mm-Hg and 760 mm-Hg, no significant difference on the hatching rate and the increasing rate of hatching was observed in the length of treatment and days elapsed at the pressure of 380 mm-Hg. Under the reduced pressure of 190 mm-Hg, the hatching rate of the sample showed a significant difference compared with the hatching rate of the other two groups. The length of days treated under the 190 mm-Hg pressure showed a significant difference of the hatching rate to each other. At this presssure, the ones kept more than five days showed 100 par cent negative in the hatching rate.
日本応用動物昆虫学会の論文
1957-09-30