ジンサンシバンムシの生活史についての若干の観察,特に温度との関連について (植物防疫学)

概要

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The effects of temperature on the duration of developmental period, the survival rate in immature stages the length of adult life, and the oviposition behaviour of Stegobium paniceum were studied. The most favourable temperature zone for the embryonic and postembryonic development of the beetle lies between 22.5 and 27.5℃. At higher and lower temperature the speed of the development tends to be slowed down, and the mortality increases. The regression equation of developmental velocity through the immature stages on temperature is Y=0.0016X-0.0213. The threshhold of the development is 12.9℃, and the total effective temperature is estimated to be 610.4 day degrees. The mean duration of adult life tends to be shortened with the raise of temperature. At 20℃ it is 21.2 days in the female and 21.9 days in the male, while it is 12.5 and 15.8 days, respectively, at 25℃, and 9,7 and 10.1 days at 30℃. The number of eggs deposited each day by a female becomes maximum among the first 3 to 5 days after the emergence at 25℃, and 50 percent of the commulative oviposition rate are attained in first 4 days. The beetle may have 2 generations a year in Kobe if there is no heating in the winter. Hibernation seems to be in the mature larval stage.
神戸大学の論文