温度对椰心叶甲实验种群生长的影响  

Effects of temperature on Brontispa longissima population growth.

作　　者：钟义海[1] 李洪[2] 刘奎[1] 温海波[1] 金启安[1] 彭正强[1] 

机构地区：[1]中国热带农业科学院环境与植物保护研究所,儋州571737 [2]海南省林业局,海口570203

出　　处：《应用生态学报》2005年第12期2369-2372,共4页Chinese Journal of Applied Ecology

基　　金：国家"十五"科技攻关项目(2004BA509B17);社会公益研究专项(2004DIA4J02);海南省重点科技项目(04112);海南省教育厅资助项目(2004-2006hjkj200417).

摘　　要：在不同温度(16、20、24、28和32℃)条件下观察椰心叶甲的发育、存活及繁殖情况.结果表明,椰心叶甲在32℃恒温下不能存活,在16～28℃世代发育起点温度为11.08℃,有效积温为966.22日.度,在海南省儋州市1年可发生4～5代.椰心叶甲世代存活率在28℃时最高,达92.5%.净增殖率、内禀增长率及周限增长率均在28℃时最高,分别为54.1、0.0260和1.0263.平均世代历期和种群加倍时间分别以20℃和28℃时最短,前者为123.1d,后者为26.7d.种群趋势指数以28℃时最高,为50.8,表明24～28℃为椰心叶甲种群生长的适合温度.The study on the development, survival and reproduction of Brontispa longissima at 5 different temperature （16, 20, 24, 28, 32℃） showed that the threshold temperature and effective accumulative temperature for the whole generations of Brontispa longissima were 11.08℃ and 966.22 ℃, respectively, and 4 - 5 generations could occur in a year in Danzhou, Hainan Province. One generation had the highest survival rate （92.5 % ） at 28℃, but failed to survive at 32℃. Brontispa longissima reared at 28℃ had the greatest intrinsic increasing rate （ r m = 0. 0260）, finite increasing capacity （ λ= 1.0263 ）, and population trend index （ I = 50.8）. The shortest mean generation time （123.1 d） and population doubling time （26.7 d） were obtained at 20 ℃ and 28 ℃, respectively. The temperature from 24℃ to 28℃ was suitable for the development and reproduction of Brontispa longissirna .

关 键 词：椰心叶甲 实验种群 温度 生命表 种群参数 

分 类 号：S433[农业科学—农业昆虫与害虫防治]