摘要
20 0 0 - 0 3从陕西武功采集花绒坚甲成虫 36 0头 ,每 5头 1组放入用杨树木块凿制的人工虫道内 ,在实验室中饲养 ,观测其生物学特性。结果表明 ,花绒坚甲成虫寿命 3年以上 ,3年内可连续发生 6代及 2 1对姊妹代 ,世代重叠。成虫 10月上旬开始在虫道内越冬 ,翌年 3月下旬开始活动 ,越冬成虫 1年产卵 2次 ,卵期平均 12 .7d,幼虫期平均 8.4 d,茧蛹期平均 2 5 .6 d。第 1次和第 2次产卵发育的成虫分别为第 1姊妹代和第 2姊妹代成虫。第 1姊妹代成虫部分于 8月上旬开始产卵 ,9月中旬产卵结束 ,9月下旬第 2代成虫羽化 ;第 2姊妹代成虫当年不产卵。
We collected 360 adults of Dastarcus longulus from Wugong,Shaanxi province in March of 2000.Every 5 adults as a group are put in the artificial tunnels made of poplar wood.They are reared in the laboratory and observe and record their biological features.The results showed that the adult life of Dastarcus longulus is over three years.In laboratory,the adult breeds no more than 6 generations and 21 couples of sister generations in three years.The adults hibernate in artificial tunnels after mid October.In the early March of the next year,adults begin to be active.Hibernant adults lay eggs twice in a year,egg period is 12.7 days,larva period is 8.4 days,the pupa period is 25.6 days.Only some of the first sister generation adults begin to lay eggs in the early August and end in mid September.The second generation adults emerge in late September.The second sister generation adults dont lay eggs in this year.
出处
《西北农林科技大学学报（自然科学版）》
CSCD
北大核心
2003年第2期62-66,共5页
Journal of Northwest A&F University(Natural Science Edition)
基金
国家"十五"科技攻关项目 (2 0 0 1BA5 0 9B10 11)
