摘要
以甘兰叶为食料,系统观察不同温度下斜纹夜蛾实验种群幼虫龄次、发育历期、存活率和繁殖力结果表明,在15℃、19℃、24℃、29℃、34℃恒温下幼虫7龄以上的个体分别达55.4％、41.2％、21.3％、16.6％和14.3％,卵、幼虫、预蛹、蛹、产卵前期的发育起点温度分别为11.52±1.78℃、11.97±0.91℃、12.52±1.22℃、11.47±0.92℃、10.59±2.65℃,有效积温分别为56.75℃/d、224.06℃/d、28.65℃/d、153.33℃/d、41.18℃/d,发育最高临界温度为38.2820℃、38.8766℃、39.5080℃、39.5403℃、37.4907℃,发育最低临界温度为4.9509℃、4.8974℃、4.7435℃、4.7430℃、4.6471℃,发育最适温度为23.0702℃、22.0024℃、25.6765℃、26.5453℃、23.2649℃。温度对各虫态存活率和成虫繁殖力有显著影响,各虫态存活率和繁殖力与温度呈二次抛物线关系。
Instars number of larvae, the development, survival rate and fecundity of laboratory population of Spodoptera litura F. under various temperatures on a cabbage diet are studied. The results show that the numbers of larvae over 7 in-stars are 55.4% ,41.2% ,21. 3% , 16. 6% , 14. 3% at the constant temperature of 15℃ ,19℃ ,24℃ ,29℃ ,34℃, respectively. The development threshold temperatures for egg, larvae, prepupae, pupae, precede period of egg oviposition are 11.52±1.78℃,11.97±0.91℃,12.52±1.22℃ ,11.47±0.92℃,10. 59±2. 65℃.respectively. Their effective accumulated temperatures are 56. 75℃/d,224. 06℃/d,28. 65℃/d, 153. 33℃/d,41. 18℃/d, respectively. The development critical maximum temperatures are 38. 2820℃,38. 8766℃,39. 5080℃,39. 5403℃,37. 4907℃, respectively. The development critical minimum temperatures are 4.9509℃,4.8974℃,4.7435℃,4.7430℃ ,4.6471℃ , respectively. The most suitable temperatures are 23.0702℃,22.0024℃,25.6765℃,26.5453℃,23.2649℃, respectively. The effect of temperature on the rate of each development stage and fecundity of female is significant. The survival rate of each development stage and fecundity of female increases with temperature as parabola.
出处
《中国生态农业学报》
CAS
CSCD
2002年第3期76-79,共4页
Chinese Journal of Eco-Agriculture
基金
江西省自然科学基金
江西省跨世纪学术和技术带头人培养项目
关键词
存活率
繁殖力
农业害虫
温度
斜纹夜蛾
发育
Spodoptera litura Fabricius, Development, Survival rate, Fecundity, Temperature
