植物次生物质对美国白蛾食物利用的影响  

Effects of Secondary Substances on Food Utilization by Hyphantria cunea Larvae

作　　者：刘晓霞 姜礅 孟昭军[2] 严善春[1] Liu Xiaoxia;Jiang Dun;Meng Zhaojun;Yan Shanchun(Key Laboratory of Sustainable Forest Ecosystem Management,Ministry of Education,Northeast Forestry University,Harbin 150040,P.R.China)

机构地区：[1]东北林业大学林学院、森林生态系统可持续经营教育部重点实验室,哈尔滨150040 [2]东北林业大学林学院,哈尔滨150040

出　　处：《东北林业大学学报》2020年第5期99-103,共5页Journal of Northeast Forestry University

基　　金：国家重点研发计划项目(2018YFC1200400)。

摘　　要：在人工饲料中分别添加质量分数为0.50%、0.75%、1.00%、1.50%的水杨苷或0.20%、0.40%、0.60%、0.80%的单宁,饲喂美国白蛾(Hyphantria cunea)幼虫,用湿质量称量法测量其营养指标,分析植物次生物质对美国白蛾食物利用的影响。结果显示:与对照相比,单宁各处理组随着幼虫龄期的增长,幼虫的取食量和排粪量变化趋势均表现为先促后抑;食物消耗率、转化率和食物利用率在4龄时多与对照组差异不显著(P>0.05);在5~6龄时,食物消耗率均显著高于对照组,食物转化率与利用率多显著低于对照组,且在同一质量分数处理组随龄期的增加与对照的差异越来越大。水杨苷处理,多数处理组4~6龄幼虫的取食量高于对照组,排粪量随龄期的增长逐渐减少;食物消耗率,1.00%处理组在4~5龄显著低于对照(P<0.05),6龄时与对照差异不显著(P>0.05),其余处理组在4~5龄与对照均无显著差异(P>0.05),6龄时均显著高于对照(P<0.05)。食物转化率和利用率,0.50%处理组4~6龄均低于或显著低于对照;0.75%处理组,在各龄期与对照之间均无显著差异(P>0.05);1.00%处理组,在4~5龄时高于或显著高于对照(P<0.05),6龄时低于对照但差异不显著(P>0.05);1.50%处理组在4龄、6龄时低于或显著低于对照,5龄时显著高于对照(P<0.05)。说明单宁对美国白蛾幼虫的食物利用有明显的抑制作用,水杨苷对其食物利用的影响与剂量有关,质量分数0.75%无明显影响,1.00%有促进作用,0.50%和1.50%表现为抑制作用。In order to investigate the effects of plant secondary substances on food utilization by the fall webworm(Hyphantria cunea),salicin(0.50%,0.75%,1.00%and 1.50%)or tannin(0.20%,0.40%,0.60%and 0.80%)were added to the artificial diets for rearing the fall webworm larvae.Compared with the control group,the amounts of larval food intake and feces produced increased first and then decreased as the increase of H.cunea larval instars in the tannin treatment groups.Food consumption,conversion and utilization by the 4th instar larvae in the tannin groups were not significantly different from those in the control group.The food consumption by the 5 th-6 th instar larvae in the tannin treated groups was significantly higher than that in the control group,while their food conversion and utilization were significantly lower than those of the control.Moreover,the differences in the food consumption,conversion and utilization between a tannin treatment group and the control increased as the increase of larval instars(from 5th to 6th instars).With regard to salicin,food consumption by the 4 th-6 th instar larvae in most treatment groups was higher than that in the control group,and the amount of feces produced decreased with the increase of the larval instars.Food consumption by the 4 th-5 th instar larvae from 1.00%salicin treatment group was significantly lower than that in the control group(P<0.05),but they were not different for the 6th instar larvae(P>0.05).There were no significant differences in food consumption by the 4 th-5 th instar larvae between the other three salicin treatment groups(0.50%,0.75%and 1.50%,respectively)and the control group(P>0.05);however,food consumption by the 6 th instar larvae in these three treatment groups were significantly higher than that in the control group(P<0.05).The food conversion and utilization by the 4 th-6 th instar larvae in 0.50%salicin group were slightly or significantly lower than those in the control group,while 0.75%salicin had no effects on food conversion and utilization by

关 键 词：美国白蛾 水杨苷 单宁 食物利用 

分 类 号：S763.42[农业科学—森林保护学] Q965[农业科学—林学]