摘要
本研究对实验室内饲养的葱蝇种群数量进行了动态预测,旨在为自然种群的研究提供参考。在实验室饲养从日本引进的葱蝇,建立了稳定的实验室种群,编制和分析了该种群的生命表。结果表明,葱蝇实验种群的存活曲线为Ⅱ型曲线,说明葱蝇的卵、幼虫、蛹以及成虫的存活率都比较稳定;种群趋势指数(I)为9.81,世代总存活率为12%。同时,用组分分析的方法分析了各虫态对种群趋势指数贡献的大小。结果表明,对种群趋势指数起主要作用的虫期为蛹期,而成虫产卵前期作用最小。此外,利用不等期年龄组的种群矩阵模型组建方法,并参考所编制的实验种群生命表,组建了葱蝇实验种群矩阵模型。本研究认为,利用该矩阵模型可对实验室里饲养的葱蝇种群动态进行简单预测。
The onion maggot Delia antique is an ideal model species for the study of the molecular mechanism of insect diapause.This study investigated the life cycle of the onion maggat,D.antiqua,with life table of experimental population to understand population growth,population dynamics and population forecast.The experimental population of the onion maggot has been reared under constant laboratory conditions with the artificial diet.And the life table has been established with standard ecological method.The results showed that the population trend index（I） reached 9.81,overall survival for generations reached to 12%,and the experimental population survivorship curve was obviously typeⅡsurvivorship curve which indicated that the suvival rates of eggs,larvas,pupas and adults were stable.The component analysis formula was used to analyze the contribution of every stage to the index of population trend.The result indicated the pupa stage was the main effect stage,and the preoviposition adult stage had a minimal effect.The insect population matrix model of the D.antiqua had been established with the method of nonequal development time.With the matrix model,age distribution of every stage and the population variation with the sequence of time could be predicted.
出处
《重庆师范大学学报（自然科学版）》
CAS
2011年第2期19-22,61,共5页
Journal of Chongqing Normal University:Natural Science
基金
国家自然科学基金(No.30870340)
重庆市教委科学技术研究项目(No.KJ100620)
关键词
葱蝇
实验种群
生命表
矩阵模型
Delia antique； experimental population； life table； matrix model
