不同温度下茄二十八星瓢虫的实验种群生命表  

Life table of the laboratory population of Henosepilachna vigintioctopunctata at different temperatures

作　　者：周雷[1] 王香萍[1] 李传仁[1] 桂连友[1] 张友军[1,2] 

机构地区：[1]长江大学农学院,湖北荆州434025 [2]中国农科院蔬菜花卉研究所,北京100000

出　　处：《环境昆虫学报》2014年第4期494-500,共7页Journal of Environmental Entomology

基　　金："十二五"农村领域国家科技计划课题(2012BAD19B06-09)

摘　　要：近年来,茄二十八星瓢虫Henosepilachna vigintioctopunctata在江汉平原地区危害严重,本研究旨在探明温度对该地区茄二十八星瓢虫生长发育和繁殖的影响,组建茄二十八星瓢虫的实验种群生命表,为该虫防治提供一定的理论依据。本研究采用室内恒温饲养方法,分别设置19℃、22℃、25℃、28℃、31℃和34℃等6个温度,测定各温度下用马铃薯饲养不同虫态的生长发育历期。结果表明,茄二十八星瓢虫在不同恒温条件下各虫态的发育历期随着温度的升高而逐渐缩短,19℃恒温下发育历期最长为32.19 d,31℃恒温下仅为13.15 d。幼虫期和蛹期的发育起点温度分别为10.93和12.13℃,日有效积温为186.04和57.06 d·℃。在19-31℃5个温区下幼虫和蛹的存活率都很高,并依据该温区内的发育起点温度和有效积温建立了发育历期预测式与Logistic模型。在25℃时单雌平均产卵量达到最大值1074.50粒,世代存活率和种群趋势指数最高,分别为93.33%和501.47,高温和低温均不利于其种群数量增加。Recently, Henosepilachna vigintioctopunctata is outbreak in the Jianghan plain. In order to explore the effects of temperature on the population growth of the H.vigintioctopunctata in the Jianghan plain area, life tables of the laboratory population of the H.vigintioctopunctata were constructed in order to provide certain theoretical basis for prevention and control of the pest. H.vigintioctopunctata populations were artificially reared at six constant temperatures （19℃,22℃,25℃,28℃,31℃,and 34 ℃） with potato leaves.The developmental threshold temperature and effective accumulated temperatures were calculated.The results showed that Henosepilachna vigintioctopunctata in each development period of insect states gradually shortened with the increase of temperature. The developmental period was longest for 32.19 d at the constant temperature of 19℃, but it was only13.15 d under 31℃. The developmental threshold temperature of larval stage and pupal stage was followed 10.93 and 12.13℃, and effective accumulated temperature were 186.04 and 57.06 d·℃, respectively. The survival rate of larval stage and pupal stage were high from 19 to 31℃.The developmental duration predicting equations and Logistic models were also made on the developmental threshold temperature and effective accumulated temperature according to the 5 temperatures. The maximum number of eggs laid per female was 1074.50 at 25℃,both survival rate of immature stage and population trend index were the highest of 93.33% and 501.47 at 25℃,it was not suitable for H.vigintioctopunctata to live at high or low temperature. 

关 键 词：茄二十八星瓢虫 发育历期 发育起点温度 有效积温 生命表 种群趋势指数 

分 类 号：Q968.1[生物学—昆虫学] S433.5[农业科学—农业昆虫与害虫防治]