几种十字花科蔬菜害虫生态位的研究
The ecological niches of several pests of cruciferous vegetables.
吴伟坚
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作者单位：华南农业大学昆虫生态研究室,广州510642
中文关键词：小菜蛾;黄曲条跳甲;菜粉蝶;小猿叶甲;生态位
英文关键词：Plutella xylostella; Pieris rapae; Phyllotreta st riolata; Phaedon brassicae; niche
中文摘要：以Levins生态位宽度指数和Pianka生态位重叠指数估计发生在同一营养阶层的 4种主要十字花科植物害虫营养生态位、时间生态位和空间生态位的生态位宽度和重叠度。结果表明小菜蛾、黄曲条跳甲、菜粉蝶和小猿叶甲 4种昆虫的生态位并不完全重叠。
英文摘要：The niche breadth and niche overlap of four pests on the same trophic level (cruciferous plants) were estimated with Levins index and Pianka's measure in three dimensions: trophic level, time and spatial resources array. The resul ts show that the four