作　　者： ; ; ;

机构地区： 贵州大学农学院贵州省山地农业病虫害综合防治重点实验室

出　　处： 《植物保护学报》 2011年第6期521-526,共6页

摘　　要： 在室内研究了19、22、25、28和31℃条件下两种蓟马在辣椒上的存活率、成虫寿命、繁殖力及生命参数,以揭示温度对入侵害虫西花蓟马Frankliniella occidentalis和本地害虫花蓟马Frankliniellaintonsa的影响。结果显示,在19～31℃范围内两种蓟马雌、雄成虫寿命均随温度的升高而缩短,内禀增长率随温度的升高而增大,西花蓟马和花蓟马皆是在31℃时最高,分别为0.1347和0.1822。两种蓟马的种群趋势指数及净增殖率与温度之间呈曲线关系。在相同温度条件下,西花蓟马在各温度下的存活率高于花蓟马,但内禀增长率低于花蓟马。西花蓟马的繁殖力、种群趋势指数及净增值率在22℃时最高,花蓟马在25℃时最高。两种蓟马对温度的适应能力不同,22℃是西花蓟马的最适温度,而25℃更适合于花蓟马。 The survival rate,adult longevity,fecundity and life parameters of invasive species of Frankliniella occidentalis and indigenous species of F.intonsa feeding on capsicum were studied at 19,22,25,28 and 31℃ in laboratory to evaluate the effects of the temperature on two species of thrips.The results showed that the longevity of female and male adults of both F.occidentalis and F.intonsa decreased with the increase of temperature from 19℃ to 31℃.The intrinsic rates of natural increase（rm） increased with the increase of temperature,rm of F.occidentalis and F.intonsa were highest at 31℃,with 0.1347 and 0.1822 respectively.The population trend indexes（I） and net reproductive rate（R0） of both thrips had the curve relationship with temperatures.At the same temperature,the survival rate of F.occidentalis was higher than that of F.intonsa,however rm of F.occidentalis was lower than that of F.intonsa.The fecundity,I and rm of F.occidentalis were highest at 22℃,while F.intonsa were highest at 25℃.The results indicated that 22℃ was the most suitable temperature for F.occidentalis,while 25℃ for F.intonsa.

关 键 词： 西花蓟马 花蓟马 存活 繁殖力 种群参数

领　　域： [农业科学] [农业科学]