摘要
为探讨硒(selenium)对亚洲玉米螟Ostrinia furnacalis(Guenée)的营养作用及其生长发育、生殖行为的影响,选用添加不同浓度硒的人工饲料饲喂3龄幼虫,观察了蛹、成虫的生长发育及成虫生殖行为情况。结果表明,不同浓度的硒对蛹和成虫的发育影响差异较大,其中硒浓度为0.75 mg/kg时生长发育最好,化蛹率、雄蛹体重和雄蛾寿命显著高于对照,分别提高了7.4%、12.7%和19.1%;硒浓度为5.00 mg/kg时生长发育最差,化蛹率和羽化率最低,雌、雄蛹重最小,成虫寿命最短。当硒浓度为0.75 mg/kg时,雌蛾求偶百分率和求偶持续时间均有所降低,且求偶高峰期推迟1~2 h。以正常雌蛾为诱源时,硒雄蛾的定向能力显著低于对照,而以硒雌蛾为诱源时,硒雄蛾的定向能力显著高于对照雄蛾;硒雌蛾的产卵量和卵孵化率显著提高,硒雌蛾×硒雄蛾组合提高最多,分别为28.9粒和9.3%。研究表明,适量硒可以促进亚洲玉米螟生长发育,并能显著影响成虫的生殖行为。
In order to explore nutritional effects of selenium on the Asian corn borer Ostrinia furnacalis（Guenée） and its relationship with O. furnacalis development and reproductive behaviors in the laboratory, the 3rd-instar larvae were fed by the artificial diet with different concentrations of selenium, and the growth, development and reproductive behaviors of O. furnacalis were observed. The results showed that the effects of different concentrations of selenium on the development of pupae and adults were different. The average pupation rate, male pupa weight and adult duration were significantly higher than that of the control at the concentration of 0.75 mg/kg, which were improved by 7.4%, 12.7% and19.1%, respectively. The O. furnacalis treated by selenium at the concentration of 5.00 mg/kg had the lowest pupation rate and emergence rate, the smallest pupal weight and the shortest adult longevity among different treatments. Furthermore, at an appropriate concentration of 0.75 mg/kg, the female had lower courtship percentage and duration than the control, and the courtship peak time was delayed by 1-2 h. Compared to the control, the male treated by selenium had significantly lower orientation to the control female, but significantly higher orientation to the female treated with selenium. Moreover, the fecundity and egg hatching rates of females treated by selenium significantly increased, especially in SeACB pairs, which laid 28.9 more eggs than the control, and the emergence rate increased by 9.3%. The results indicated that the proper amount of selenium could promote development of O. furnacalis, and significantly influence reproductive behaviors.
出处
《植物保护学报》
CAS
CSCD
北大核心
2017年第3期400-405,共6页
Journal of Plant Protection
基金
国家自然科学基金(31640064)
"十二五"国家科技支撑计划(2012BAD14B14)
关键词
硒
亚洲玉米螟
生长发育
交配成功率
生殖力
selenium
Ostrinia furnacalis（Guenée）
development
mating success
fecundity
