綠豆象(Callosobruchus chinensis Linn.)生活史的研究初報

1.綠豆象是綠豆貯藏期中主要害蟲之一,以幼蟲為害,食息豆中,除為害綠豆外,還能為害長莢豇豆,黃大豆,短莢豇豆,豌豆,蠶豆及蓮子等。2.根據1945年在研究室條件下飼養的結果,綠豆象在福建省永安1年發生9代,生活史極不整齊。3.綠豆象在福建永安、福州、越冬現象不顯著,冬季除卵外,各蟲期常可同時發現。4.成蟲畫夜都可活動,棲息在豆上或倉庫板壁,受外物驚動時,略有假死性。5.成蟲羽化出豆半小時後即可交尾,但一般需要5小時半以上。交尾歷時短30(最短)～123(年均)～60秒(最長)。雌蟲交尾一次,即可完成其繁殖的任務。6.產卵前期0.15～5.41～20.5小時,卵散產在豆上,產卵期3～7.68～13日,每雌一生產卯14～67.4～115粒,產卵日期3～7.46～13日。7.長期光照對於成蟲交尾,產卵影響根大,由於光線的長期刺激,使成蟲過於活動,交尾前期延長,交尾歷時過短,不能產卵或產卵很少,而且大部不能孵化。8.成蟲壽命最短3天,最長46天,冬季不能繁殖的成蟲的壽命平均比夏秋長,而且雌蟲比雄蟲長,雌蟲32～39～45日,雄蟲29～36.4～46日。而夏秋則雄蟲比雌蟲長,雌蟲4～7.66～11日,雄蟲8～10.23...

A PRELIMINARY STUDY ON THE LIFE HISTORY OF THE COWPEA-WEEVIL(Collosobruchus chinensis Linn.)

This paper is a preliminary report on the life history studies of Collosobruchus chinensis Linn. conducted at Yungan, Fukien, in 1945-1946. The cowpea weevil is one of the major pests of the various stored peas and beans in Yungan. There are 9 over-lapping. generations in a year. The winter is passed chiefly as larvae or pupae, although adults may continuously emerge out during winter, but the female cannot lay any egg, and die about one month later. The adult begins to mate one half hour after emergence, a...