摘要:
对闽东南沿海龙眼园进行为期7个月的调查研究结果表明,龙眼园节肢动物群落物种共包括102种,其中害虫54种、天敌35种、中性昆虫13种。在植食性营养层中,咀嚼式口器类群以鳞翅目为主,优势种为荔枝蛀蒂虫、三角新小卷叶蛾、荔枝尖细蛾,刺吸式口器类群优势种为龙眼角颊木虱;在天敌营养层中,捕食性天敌优势种为中华通草蛉、四斑月瓢虫,寄生性天敌优势种为广大腿小蜂、日本平腹小蜂、黄长体茧蜂。群落动态分析,群落特征指数都有明显的时间变化,6月29日到9月27日期间,生态优势度低,多样性和均匀度指数高,群落结构较合理。
Abstract:
The structure and diversity of arthropod community in longan orchard were studied. The result showed that there were 102 species of arthropod in longan orchard, they included 54 species of pest, 35 species of natural enemy and 13 species of moderate insect. If judging pest groups by the plant nutrition, Lepidoptera take the first place in the chewing mouthparts pests. Its dominant species were the Conopomorpha sinensis Bradley, Olethreutes leucaspis Meyrick and Conopomorpha litchiella Bradley. The Cornegenapsylla canarium Yang et Li was the dominant species in the piercing-sucking mouthparts pests. The Chrysoperla Sinica (Tjeter), Chilomenes quadriplaglata (Swartz) were the dominant species in the meat nutrition insects group. The Brochymena lasus (Walker), Anastatus japonicus Ashmead and Macrocintrtus addomiulis Fabricius were the dominant species in the parasitical insects group. Analysis on the dynamics of community showed that the indices of the community were obviously fluctuated with time. During the period of June, 29 to Sept, 27, the indices of ecological concentration was low, the diversity and evenness were high. So the structure of arthropod community was rational.
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