摘要
柚木野螟Eutectona machaeralis主要取食为害珍贵树种柚木Tectona grandis。为了明确不同波长LED光源对柚木野螟生长发育和繁殖的影响,本研究于室内观察分析了380 nm、450 nm、530 nm、600 nm、650 nm和白色(复合光:LL)6种LED光源对试虫生长发育和繁殖的影响。结果显示:不同波长LED光源照射对柚木野螟卵孵化率和成虫羽化率虽无显著影响,却显著降低幼虫化蛹率,380 nm处理组幼虫化蛹率最低;LL和450nm处理组均显著延长卵期;各色光处理组幼虫期、蛹期和世代发育历期均延长;LL处理显著减轻雌、雄蛹重;除380 nm处理组成虫期显著缩短外,其余各色光处理均延长。不同波长LED光源照射显著抑制其繁殖,其中,380 nm(12.00%)和450 nm(16.00%)处理组交配率显著低于对照组(68.00%);各色光处理显著降低柚木野螟单雌产卵量,其中LL处理组最低(18.96±1.92)粒,产卵前期最长(6.67±0.21)d。综上,6种LED光源均可延长柚木野螟的发育历期,降低幼虫化蛹率,减轻蛹重;并且6种LED光照显著抑制其繁殖,其中LL、380 nm和450 nm光源影响尤为显著。
Eutectona machaeralis mainly feed on teak,a precious tree species.The effects of different wavelength LED light sources on the growth,development,and reproduction of E.machaeralis were measured by exposing the insects tof six LED light sources,380 nm,450 nm,530 nm,600 nm,650 nm,and white(composite light:LL).The results showed that different wavelengths of LED light had no significant effect on the egg hatching rate and adult emergence rate of E.machaeralis,but significantly reduced the pupation rate,with the pupation rate at 380 nm light the lowest.White light and 450 nm light significantly prolonged the egg duration.The larval duration,pupal duration and generation duration of different wavelength light treatment groups were respectively longer than those of the control group.The 380 nm light significantly shortened the adult duration,while the other wavelength light treatments prolonged the adult duration.The mating rate of 380 nm(12%)and 450 nm(16%)treatment group was significantly lower than that of the control group(68%).Under different wavelength light sources,the fecundity of E.machaeralis was significantly reduced.Under white light irradiation,the fecundity of E.machaeralis was the lowest(18.96±1.92 eggs/female),and the pre-oviposition period was the longest(6.67±0.21 d).In addition,under white light irradiation, the weight of female and male pupae was significantly reduced. The results indicate that LED light sources of six wavelengths can prolong the development of E. machaeralis, reduce the pupation rate and pupal weight. Moreover, they significantly inhibit the reproduction of E. machaeralis, with light of white, 380 nm and 450 nm having the most significant effects.
作者
苑鹏宇
张定怡
董祥
林娜
王胜坤
温秀军
马涛
YUAN Pengyu;ZHANG Dingyi;DONG Xiang;LIN Na;WANG Shengkun;WEN Xiujun;MA Tao(College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou 510642,China;Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,China)
出处
《中国生物防治学报》
CSCD
北大核心
2024年第3期575-582,共8页
Chinese Journal of Biological Control
基金
广东省林业科技创新项目(2019KJCX013,2017KJCX045)。
关键词
柚木野螟
LED光源
生长发育
存活率
繁殖力
Eutectona machaeralis
LED light
growth and development
survival rate
fecundity
