摘要
为明确新入侵农业害虫草地贪夜蛾Spodoptera frugiperda对药用植物金银花Lonicera japonica的潜在为害风险,采用室内饲养观察法比较取食玉米Zea mays和金银花叶片后草地贪夜蛾的种群特征,并采用室内生测法测定取食2种植物幼虫体内消化酶和解毒酶的活性。结果显示,草地贪夜蛾在金银花上能完成完整的世代发育。取食金银花叶片的草地贪夜蛾幼虫发育历期为24.08 d,显著长于取食玉米的幼虫发育历期(18.47 d);取食金银花叶片的幼虫存活率为63.67%,较取食玉米叶片幼虫的存活率78.00%明显降低;取食金银花叶片的草地贪夜蛾雌、雄蛹重分别为197.98 mg和198.78 mg,显著大于取食玉米叶片时;取食金银花和玉米叶片的草地贪夜蛾成虫的繁殖力与寿命均无显著差异。取食金银花叶片的草地贪夜蛾5龄幼虫中肠中的淀粉酶、脂肪酶、胰蛋白酶、谷胱甘肽S-转移酶和细胞色素P450酶的活性均较取食玉米叶片时显著降低,但羧酸酯酶活性较取食玉米叶片时显著升高。表明草地贪夜蛾在金银花上能较好地生长发育和繁殖,这对金银花的安全生产构成潜在威胁。
To clarify the potential damage risk of fall armyworm Spodoptera frugiperda,a newly invading agricultural pest,to the medicinal plant Lonicera japonica,the indoor breeding observation method was used to compare the population characteristics of S.frugiperda after feeding on maize and L.japonica leaves,and the activities of digestive enzymes and detoxification enzymes in the larvae feeding on the two plants were determined with indoor bioassay.The results showed that S.frugiperda could complete its lifecycle when feeding on L.japonica leaves.The developmental duration of S.frugiperda larvae feeding on honeysuckle leaves was 24.08 d,which was significantly longer than that of larvae feeding on maize leaves(18.47 d);the survival rate of larvae feeding on honeysuckle leaves was 63.67%,which was significantly lower than that feeding on maize leaves(78.00%),but the pupal weight of S.frugiperda feeding on L.japonica leaves(197.98 mg and 198.78 mg for female and male pupal weight,respectively)was significantly higher than those on maize leaves.In addition,the fecundity and longevity of S.frugiperda adults feeding on L.japonica and maize leaves were not significantly different.The activities of amylase,lipase,trypsin,glutathione S-transferase and cytochrome P450 enzyme activities in the midgut of the 5th-instar larvae of S.frugiperda feeding on honeysuckle leaves were significantly lower than those feeding on maize leaves,but the carboxylesterase activity was significantly higher than that on maize leaves.It indicated that S.frugiperda could grow,develop and reproduce well on honeysuckle,posing a potential threat to the safety of honeysuckle production.
作者
周亚媛
韩世鹏
陈鑫婕
代子叶
何运转
Zhou Yayuan;Han Shipeng;Chen Xinjie;Dai Ziye;He Yunzhuan(College of Plant Protection,Hebei Agricultural University,Baoding 071000,Hebei Province,China)
出处
《植物保护学报》
CAS
CSCD
北大核心
2023年第2期421-429,共9页
Journal of Plant Protection
基金
河北省现代农业产业技术体系(HBCT2018060204)
国家现代农业产业技术体系(CARS-21)
河北省自然科学基金(C2022204009)。
关键词
草地贪夜蛾
金银花
消化酶
解毒酶
生长发育
繁殖
Spodoptera frugiperda
Lonicera japonica
digestive enzyme
detoxification enzyme
growth and development
fecundity
