【摘要】 通过室内饲养和野外观察研究了红棕象甲(Rhychophorus ferrugineus)在浙江丽水的生活史和适生性,结果表明:红棕象甲在浙江丽水1 a发生1～2代,以成虫、幼虫、蛹在植株内部结茧越冬,翌年3月下旬成虫开始活动,第一、第二代卵4月上旬和8月上旬出现,成虫产卵期长,世代重叠严重,3-11月为危害期,12月上旬开始越冬;红棕象甲成虫、幼虫、蛹的过冷却点分别为(-7.44±2.971)℃、(-3.35±0.596)℃和(-2.74±1.483)℃,能适应丽水的气候条件。更多还原

【Abstract】 Red palm weevil(Rhychophorus ferrugineus)occurs 1-2 generations a year in Lishui,Zhejiang province,overwinters with larva,pupa and adult in cocoon inside plant.Adult starts activity next year by late March,and eggs of first and second generation happen in early April and August.Laying period of adult is long,causing generation overlap.R.ferrugineus damages from March to November,and starts overwinter in early December.Determination of supercooling point of adult,larva and pupa indicated-7.44±2.971℃,-3.35±0.596℃ and-2.74±1.483℃.According to temperature history in Lishui,red palm weevil can be adapted the climatic conditions.更多还原