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为明确外来入侵害虫西花蓟马与本地物种烟蓟马的发育和繁殖的区别,在25℃恒温条件下,组建了西花蓟马与烟蓟马在紫甘蓝上的实验种群生命表。结果显示,西花蓟马在紫甘蓝上的未成熟期为11.55天,显著低于烟蓟马;西花蓟马两性生殖时,雌成虫平均寿命为32.06天,单雌产卵量为125.19粒,孤雌生殖时,雌成虫平均寿命可达43.33天,单雌产卵量上升到246.40粒,而烟蓟马雌成虫平均寿命仅为23.44天,终生可产卵186.06粒;西花蓟马取食紫甘蓝的内禀增长率为0.1543,低于烟蓟马的0.1872;西花蓟马的种群增长趋势指数为72.2456,而烟蓟马为126.2272;西花蓟马在紫甘蓝上的稳定年龄组配中未成熟期所占的比例低于烟蓟马,而成虫期所占的比例相对较高。
In order to clarify the difference between the development and reproduction of the invasive pest western flower thrips and native species Thrips tabaci, the experimental population life table of western flower thrips and thrips tabaci was constructed at 25 ℃. The results showed that the immature stage of western flower thrips in purple cabbage was 11.55 days, which was significantly lower than that of Thrips tabaci. The average life span of adult female adults was 32.06 days with 125. 7 females , Parthenogenesis, the average life expectancy of female adults up to 43.33 days, the number of single females raised to 246.40, and the average life expectancy of adult female thrips was only 23.44 days, life can be spawned 186.06; Western flower thrips to take The intrinsic rate of increase of purple cabbage was 0.1543, lower than 0.1872 of Thrips tabaci; the population growth trend index of F. occidentalis was 72.2456, while that of Thrips tabaci was 126.2272; the stable age group of F. occidentalis on purple cabbage Proportion in the immature stage is lower than that of Thrips tabaci, while adult stage accounts for a relatively high proportion.