中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 棉红铃虫自然种群的生命统计特征 昆虫学报 1993,36 (3) 308-314
Position: Home > Articles > THE DEMOGRAPHY OF PINK BOLLWORM NATURAL POPULATION Acta Entomologica Sinica 1993,36 (3) 308-314

棉红铃虫自然种群的生命统计特征

作  者：
邝幸泉;黄汉文;张国安
单  位：
华中农业大学植保系
关键词：
棉红铃虫;自然种群;生命统计
摘  要：
1978—1988年,在湖北省江汉平原棉区,用编制特定年龄生命表的方法,研究棉红铃虫Pectimophora gossypiella(Saunders),第1至3代的自然种群生命统计特征值。世代存活率(S)为3.23、4.01和1.46;各虫态发育阶段(X)与相应阶段存活率的关系为:Y_1=61.66e~(-0.58#)、Y_2=142.47e~(-0.73#)、Y_3=146.68e~(-0.0(?)#);种群趋势指数(I):1.12、2.03和0.45;每雌蛾平均及最高产卵量:35(253)、51(235)、31(293)粒;自然内禀增长率(r′(?))为0.0390、0.0403和0.0026;净增殖率(R_o):4.39、4.43和2.04;周限增长率(λ):1.0398、1.0411和1.0026;世代长度(T):38、37和276日;种群加倍时间(t)18、17和267天。上列十个生命统计值已成为组建棉红铃虫的计算机辅助决策模型所必须的基质。第二代是全年的关键世代,各代钻蛀期的幼虫数及越冬期的幼虫数是影响下一世代或次年种群数量的关键虫态,钻蛀期幼虫的自然死亡是致死的主导因子。
译  名：
THE DEMOGRAPHY OF PINK BOLLWORM NATURAL POPULATION
作  者：
KUANG XlNG-QUAN HuANG HAN-WEN ZHANG GUO-AN (Department of Plant Protection, Central China University of Agriculture, Wuhan 430070)
关键词：
Pectinophora gossypiella-natural population-demography
摘  要：
The pink bollworm Pectinophora gossypiella is an important pest of cotton in Central China. It breeds three generations a year and its mature larva passes over winter. The life tables of its natural population were constructed from 1978 to 1988 in Jianghan Plain and the average values of demographic constants of the first, second and third generation were determined as follows: The survival rates were 3.23 ±1.07, 4.01±1.83, and 1.46±1.09; and the exponential equations were Y1= 61.66 e0.52x, Y2=142.47e-0.73x and Y3 = 146.68e-0.8.x where x = stage of development, the type of curve appeared to fit in with type A of Price(1975), which gave over 80% self mortality from egg to the mature larva in each generation. The population trend indices were 1.12, 2.03 and 0.45. The second generation had the highest index in each year which caused eventually heavy damage to the cotton bolls and resulted in a rapid increase of population density of the third generation. The average and ma-ximal numbers of eggs produced per female moth were 34.8/253, 50.66/235 and 30.79/293. Sex percentage of the female moths were 54.6%, 54.8% and 51.1%. The natural instananeous rate of population increase r were 0.0390, 0.0430 and 0.0026. Net replacement rate R were 4.39, 4.43 and 2.04. Mean length of a generation T were 38, 37 and 276 days. Finite rate of increase were 1.0398, 1.0411 and 1.0026 times. Population doubling time t were 18,17 and 267 days respectively. The population fluctuation was essentially affected by the self mortality of the intrusive borers in each generation and the overwintering larvae, which could be called as the key stages of pest mortality relevant to population density.

相似文章

导出引用
计量
文章访问数: 11
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46