西花蓟马在6种蔬菜寄主上的实验种群生命表  

Life tables for experimental populations of Frankliniella occidentalis on 6 vegetable host plants

作　　者：曹宇[1] 郅军锐[1] 孔译贤[1] 

机构地区：[1]贵州大学昆虫研究所,贵州山地农业病虫害重点实验室,贵阳550025

出　　处：《生态学报》2012年第4期1249-1256,共8页Acta Ecologica Sinica

基　　金：国家自然科学基金项目(31060244);公益性行业专项项目(20080325);贵州省优秀科技教育人才省长专项资金项目(黔省专合字(2007)20号)资助

摘　　要：自西花蓟马Frankliniella occidentalis传入我国后,该虫对蔬菜寄主的危害趋于严重,组建了25℃条件下,西花蓟马在黄瓜、甘蓝、莴苣、茄子、芹菜和大蒜叶片的实验种群生命表,以研究西花蓟马的危害差异性,为西花蓟马的防治提供基础数据。结果表明西花蓟马的生长发育、繁殖和生命表参数等在不同寄主之间有明显差异。西花蓟马在黄瓜上发育最快,其未成熟期为11.43 d,同时在黄瓜上最先开始产卵,产卵前期为1.22 d,在芹菜上发育最慢,为16.11 d。其每雌每天在甘蓝上和莴苣上产卵量最大,分别为2.88粒和2.48粒,在大蒜上最小,为0.77粒;每雌每天产雌率、子代雌性比在甘蓝和莴苣上都大于其他寄主。雌虫寿命在甘蓝上最长(29.06 d)、雄虫寿命在莴苣上最长(13.22 d)。西花蓟马在黄瓜、莴苣、茄子、甘蓝、芹菜和大蒜上的内禀增长力rm值分别为0.1318、0.1228、0.1154、0.1197、0.0860和0.0791;净增殖率R0分别为19.1248、30.8523、17.9322、34.5322、8.9491和8.3536。种群趋势预测指数(I)在甘蓝(34.17)、莴苣(30.09)上明显高于其它寄主,在芹菜(8.00)和大蒜(8.22)上最低。Western flower thrips,Frankliniella occidentalis（Pergande）,has become one of the most important agricultural pests worldwide,because of its extensive host range,reproductive capacity,invasion potential,plant viruses transmition ability and insecticide resistance.All of these interrelating factors are related to the basic life cycle and life history of the species,making western flower thrips the significant,difficult pest to manage.More than 500 kinds of host plants of western flower thrips have been reported.Notably,more and more serious damage to vegetables by F.occidentalis has been observed in recent years and the levels of damages were different with vegetable species.In order to know the differences and offer basis data for control,the life tables for experimental populations of F.occidentalis were established at constant temperature of 25 ℃,relative humidity of 70% and photoperiod of 16L∶ 8D,on cucumber,lettuce,eggplant,cabbage,celery and garlic leaves,respectively.The results showed that the thrip could develop and reproduce on all tested host plants,and there were significantly differences in the developmental periods,survival rates and fecundities on the 6 vegetable hosts.The shortest time for F.occidentalis to complete one generation was 11.43 days on cucumber,and the longest was 16.11 days on celery.The survival rates of F.occidentalis at different stages were different on different host plants.In short,the highest generation survival rates were on eggplant and garlic,and the lowest were on celery and cucumber.The fecundities per female per day were 2.88 on cabbage and 2.48 on lettuce,which were much bigger than those on other hosts,and the least was 0.77 on garlic.From all the life history of F.occidentalis,the number of female offsping increased at beginning and then declined,with the obvious oviposition peaks varying with different hosts as time increased.The rates of F.occidentalis female offspring on cabbage 1.9694 and lettuce 1.7649 per female per day were significantly higher than on ot

关 键 词：西花蓟马 蔬菜寄主 实验种群 生命表 

分 类 号：S436.3[农业科学—农业昆虫与害虫防治]