摘要
为了更全面地了解美国白蛾Hyphantria cunea (Drury)的天敌种类,探究美国白蛾天敌复合体的组成以及天敌复合体中不同种群间的互作关系,为开展美国白蛾的生物防治提供新思路和新方法,本研究自2017年9月至2019年3月对中国沈阳地区的美国白蛾天敌开展了系统调查。结果显示:沈阳地区有33种美国白蛾天敌,其中,寄生性天敌14种,捕食性天敌19种。在国内首次发现锦州细颚姬蜂Enicospilus kigasirae(Uchida)、黄须盆地寄蝇Bessaremota(Aldrich)和黑须菲寄蝇Phebellianigripalpis(Robineau-Desuoidy)3种天敌可以寄生美国白蛾幼虫。通过对美国白蛾各世代和虫态的天敌多样性等指标分析发现,沈阳地区美国白蛾天敌复合体优势种群由高到低为白蛾聚集盘绒茧蜂CotesiagregalisYanget You,康刺腹寄蝇Compsilura concinnata (Meigen),白蛾周氏啮小蜂Chouioia cunea Yang。采用主成分分析的方法,对美国白蛾天敌复合体各世代与虫期进行综合评价和排序,结果表明美国白蛾天敌复合体在幼虫期复合程度较高,并且在第2代幼虫期复合程度达到最高。
To comprehend natural enemy species of the fall webworm Hyphantria cunea(Drury) and to provide new ideas and approaches for biological control, the composition and the interaction among different populations in the natural enemy complex were investigated in Shenyang, China, from September 2017 to March 2019. Thirty three species of natural enemies were collected, including 14 parasitoids and 19 predators. The 3 species, Enicospilus kigasirae(Uchida), Bessa Remota(Aldrich) and Phebellia Nigripalpis(Robineau-Desuoidy), were the first parasitoid records of the fall webworm larvae in China. Analysis on natural enemy diversity indexes of each generation and developmental stages of the fall webworm showed that the dominant population in the natural enemy complex sorted from high to low were Cotesia gregalis, Compsilura concinnata, and Chouioia Cunea. Using principal component analysis to evaluate and sort the natural enemy complexes of each generation and developmental stage, it was found that natural enemy complexity of the fall webworm’s larval stage was higher among all developmental stages, reaching the highest in the second generation.
作者
陈沉
宋丽文
左彤彤
王悦
南俊科
孙守慧
CHEN Chen;SONG Liwen;Zuo Tongtong;WANG Yue;NAN Junke;SUN Shouhui(College of Forestry,Shenyang Agricultural University,Shenyang 110161,China;Jilin Provincial Forestry Research Institute,Changchun 130033,China)
出处
《中国生物防治学报》
CSCD
北大核心
2020年第3期353-360,共8页
Chinese Journal of Biological Control
基金
国家重点研发计划(2018YFC1200400)
国家自然科学基金(31370648)。
