›› 1994, Vol. 37 ›› Issue (4): 426-434.

• 研究论文 • 上一篇    下一篇

粘虫的年龄—发育期结构生命表

吴坤君 龚佩瑜 李秀珍 何剑   

  • 出版日期:1994-11-20 发布日期:1994-11-20

THE AGE-STAGE-SPECIFIC LIFE TABLE OF THE ARMYWORM, MYT HIMNA SEPARATA(WALKER)

WU KUN-JUN GONG PEI-YU LI XIU-ZHEN HE JIAN   

  • Online:1994-11-20 Published:1994-11-20

摘要: 在23℃下用玉米嫩叶饲养幼虫,组建了粘虫的年龄-发育期结构生命表。这种生命表考虑到种群内个体发育进度的差异并包括雄性成虫。根据生命表资料计算的粘虫种群主要参数是:净繁殖率RO= l55.88,内禀增长率rm=0.1120,平均世代长度T=45.08天。讨论了年龄-发育期结沟生命表方法和传绕生命表方法的主要差别及各自的优缺点,比较了用这两种方法得到的粘虫种群的主要参数值。

关键词: 粘虫, 发育进度差异, 生命表, 种群参数

Abstract: The age-stage-specific life table that incorporates variable developmental rate among individuals and male adults is reported for the armyworm, Mythimna separata (Walker), reared on young corn leaves at 23℃. The method of its construction is diagramed, according to which, the net reproduction rate of the worm population(R0) was calculated to be 155.88; the intrinsic rate of increase (rm), 0.1120; and the mean generation time (T), 45.08. Days. All values of these parameters are somewhat different from those obtained by means of the traditional age-specific life table,and the cause of such differences is analysed. Advantage of the new life table incomparison to the traditional one is briefly discussed.

Key words: Mythimna separata——variable development rate——life table- population parameter