蠋蝽对3种主要松毛虫的捕食功能反应  

Predation function responses of Arma chinensis to 3 Dendrolimus spp.

作　　者：熊跃芝 李密[2] 伍绍龙 邓婉[2] XIONG Yuezhi;LI Mi;WU Shaolong;DENG Wan(Taojiang County Bureau of Natural Resources of Hunan Province,Taojiang 413400,Hunan,China;Hunan Academy of Forestry,Changsha 410004,Hunan,China;Tobacco Company of Hunan Province,Changsha 410004,Hunan,China)

机构地区：[1]桃江县自然资源局,湖南桃江413400 [2]湖南省林业科学院,湖南长沙410004 [3]湖南省烟草公司,湖南长沙410004

出　　处：《湖南林业科技》2020年第3期49-53,共5页Hunan Forestry Science & Technology

基　　金：中国烟草绿色防控重大专项(18-20Aa07)。

摘　　要：马尾松毛虫、思茅松毛虫和云南松毛虫是湖南省3种主要松树害虫,蠋蝽是一种重要的捕食性昆虫。为探究蠋蝽对3种松毛虫的控害潜能,在实验室条件下,研究了不同龄期的蠋蝽3龄若虫、5龄若虫和成虫对松毛虫3龄幼虫的捕食能力。结果表明:每个虫态的蠋蝽对3种松毛虫3龄幼虫的捕食功能反应都符合HollingⅡ圆盘方程,在饱和猎物密度条件下,蠋蝽各虫态对马尾松毛虫3龄幼虫平均日最大捕食量依次为5.86头(成虫)>5.10头(5龄若虫)>2.79头(3龄若虫);蠋蝽各虫态对思茅松毛虫3龄幼虫平均日最大捕食量依次为4.10头(5龄若虫)>4.02头(成虫)>2.65头(3龄若虫);蠋蝽各虫态对云南松毛虫3龄幼虫平均日最大捕食量依次为4.27头(成虫)>3.65头(5龄若虫)>2.42头(3龄若虫)。其中,蠋蝽成虫对马尾松毛虫3龄幼虫控害潜能最大,a/T h值为3.2931。可见蠋蝽对3种松毛虫具有较大的捕食潜能,在松毛虫低龄幼虫期,选择蠋蝽成虫或5龄若虫释放防控效果最好。Dendrolimus punctatus,Dendrolimus kikuchi,Dendrolimus houi are three kinds of the main forestry pests to damage the pine in Hunan Province.Arma chinensis is an important predatory insect which can prey on pests in different families.In order to to evaluate the control potential to Dendrolimus spp.in biological control,the predation ability of A.chinensis at 3 rd,5 th and adult individuals to 3 rd instar caterpillars was studied under the laboratory condition.All the predator stages exhibited Holling II functional responses.Under the condition of saturated prey densities,the maximum daily predation average number of the 3 rd instar larvae of D.punctatus consumed by A.chinensis was 5.86(adult)>5.10(5 th instar nymph)>2.79(3 rd instar nymph),the maximum daily predation average number of the 3 rd instar larvae of D.kikuchi consumed by A.chinensis was 4.10(5 th instar nymph)>4.02(adult)>2.65(3 rd instar nymph),and the maximum daily predation average number of the 3 rd instar larvae of D.houi consumed by A.chinensis was 4.27(adult)>3.65(5 th instar nymph)>2.42(3 rd instar nymph).Among them,the lagerst predation capacity(a·Th^-1)of A.chinensis adult to 3 rd larvae of D.punctatus was 3.2931.The results herein showed that the adult and 5 th of A.chinensis had greater predation potential for the early stage of Dendrolimus spp.by releasing in the forest.

关 键 词：蠋蝽 马尾松毛虫 思茅松毛虫 云南松毛虫 捕食 生物防治 

分 类 号：S763.421[农业科学—森林保护学]