苜蓿叶象甲自然种群生命表的初步研究  

Studies on Natural Population Life Table of Alfalfa Weevil(Hypera postica Cyllenhal)

作　　者：王春华[1] 赵莉[1] 王万林 张新[1] 唐玲[1] 佐合热古丽.艾海提 邵伟林[1] 

机构地区：[1]新疆农业大学农学院新疆草地资源与生态实验室,乌鲁木齐830052 [2]新疆畜牧厅外资项目执行办公室,乌鲁木齐830000

出　　处：《新疆农业大学学报》2006年第1期24-27,共4页Journal of Xinjiang Agricultural University

基　　金：新疆维吾尔自治区科技攻关和重点项目(200231107);新疆现代化畜牧业试验示范项目办资助

摘　　要：通过对新疆苜蓿叶象甲第1代自然种群数量动态规律的研究，组建了自然种群生命表，存活曲线属于PriceA型，曲线显示种群数量减少最大的阶段是生命早期卵至二龄期。决定因子Leroux r^2分析法表明，三龄期的大风、四龄被寄生、蛹期和二龄的感病是影响种群年度间数量变动的关键因子。种群的内禀增殖力为0．15，周限增长率为1．15，趋势控制指数IPC为11．92．单雌平均产卵量307．56粒，经过一个世代种群的净增殖力为4．75。Leslie转移矩阵预测第二代成虫数量将是第一代的3．68～5．00倍。The magnitude of alfalfa weevil population in Xinjiang was researched, natural population life table was made. was decreased in dynamic of alfalf instar, fungal inf Price analysis of the survey curve showed forepart stage, from egg to second stage. a weevil population was determined by big ection of second instar etc. alfalfa weevil that the magnitude of alfalfa weevil population LeRoux r^2 analysis sowed that the magnitude wind of third instar, larval parasitism of fourth longevity averaged was 10.26 week. Englacial rate of increase was 0. 15, finite rate of increase was 1. each adult female produces 307.56 granular eggs. The of alfalfa weevil population were rose for 4.75. Leslie of second generation rose by 3.68-5.00 times. 15, IPC（index population control）was 11.92. The life cycle was completed, however, the magnitude transfer matrix forecasted that the adults number of second generation rose by 3.68-5. 00 times.

关 键 词：苜蓿叶象甲 自然种群 生命表 致死因素 

分 类 号：S435.4[农业科学—农业昆虫与害虫防治]