摘要
[目的]井上蛀果斑螟Assara inouei Yanmanaka是为害云南石榴的重要蛀果害虫,本研究主要明确该虫生长发育和繁殖等生物学特性。[方法]在室内条件下,对井上蛀果斑螟的发育历期、存活率、蛹重、性比、寿命和繁殖力等特性进行了系统研究。[结果]在温度25°C、相对湿度(RH)70%、光周期15L:9D条件下,井上蛀果斑螟卵、幼虫、蛹、成虫的发育历期分别为6.58、18.64、6.21、13.81 d,完成一个世代需35.93 d;卵孵化率、幼虫存活率、化蛹率和羽化率分别为44.57%、64.02%、86.72%和96.48%,世代存活率为32.49%;雌蛹重16.85 mg,雄蛹重13.36 mg,雌雄蛹性比为1.37:1;蛹羽化盛期为化蛹后第6至第8天;井上蛀果斑螟产卵前期为1.94 d,产卵期为6.84 d,雌虫平均寿命为14.88 d,雄虫平均寿命为12.74 d;不同性比结构下,单雌平均产卵量在31.24~118.34粒之间波动,以雌雄比为6:4时,单雌平均产卵量最高。相同雌雄比下,RH为70%时,25℃下的单雌产卵量明显高于22℃;25℃时,RH为70%下的单雌产卵量明显高于RH为50%。[结论]确定了井上蛀果斑螟主要生物学特性;性比及温湿度对井上蛀果斑螟的繁殖有显著影响。这些结果可为井上蛀果斑螟的人工饲养和科学防控提供基础资料。
[Objectives] To clarify the growth, development and reproduction of Assara inouei Yanmanaka, an important pest of pomegranate fruits in Yunnan province. [Methods] The developmental duration, survival rate, pupal weight, sex ratio, longevity, and fecundity, of A. inouei were systematically observed under laboratory conditions. [Results] The developmental duration of the eggs, larvae, pupae, and adults, of A. inouei at 25℃, a relative humidity of 70% and a photoperiod of 15L∶9D, was 6.58, 18.64, 6.21 and 13.81 d, respectively, and that of a complete generation was 35.93 d. The hatching, larval survival, pupation, and emergence rates were 44.57%, 64.02%, 86.72% and 96.48%, respectively, and the generational survival rate was 32.49%. Female and male pupal weights were 16.85 mg and 13.36 mg, respectively. Female and male pupae had a sex ratio of 1.37∶1. Peak pupal eclosion was 6 to 8 d after pupation. The duration of the pre-oviposition and oviposition periods were 1.94 d and 6.84 d, respectively. The average longevity of female and male adults was 14.88 d and 12.74 d, respectively. Under different female： male sex ratios, the average number of eggs laid per female ranged from 31.24 to 118.34. The highest number of eggs laid per female was recorded at a sex ratio of 6∶4. The average number of eggs laid per female at 25℃ was significantly higher than at 22℃, and the average number of eggs laid per female at a relative humidity of 70% was significantly higher than at a relative humidity of 50%. [Conclusion] Sex ratio, temperature and humidity have a significant impact on the fecundity of female A. inouei. These results provide basic information for the artificial rearing, prevention, and control of this pest.
出处
《应用昆虫学报》
CAS
CSCD
北大核心
2017年第2期292-297,共6页
Chinese Journal of Applied Entomology
基金
红河学院博士科研启动专项(14bs15)
红河学院大学生创新训练项目(DCXL1406)
红河学院植物保护硕士点建设项目
云南省教育厅科研基金项目(2014Y460)
关键词
井上蛀果斑螟
生物学特性
发育历期
存活率
繁殖
性比
Assara inouei, biologigical characteristics, developmental period, survival rate, fecundity, sex ratio
