美洲斑潜蝇的为害及生物学特性研究

研究表明，美洲斑潜蝇的寄主植物主要有茄科、豆科、葫芦科，其次有十字花科、菊科、锦葵科等。受害严重的作物，平均单叶有虫道１００．４个，单叶有幼虫４６．３头，被害叶率达８５．２％，有虫株率和被害株率均达１００％；研究还表明，美洲斑潜蝇从植株下部开始为害，且以植株中上部虫量最多，而被害叶位多逐叶上移；通过室内饲养和田间观察获知美洲斑潜蝇在茄子、西葫芦和地芸豆上各虫态的发育历期，并描述了其习性

STUDIES ON THE ENDANGERMENTS AND THE BIOLOGICAL CHARACTERISTICS OF AMERICAN LEAFMINER (liriomyza sativae blanchard)

Studies showed that the main host plants of American leafminer were Nightshade Family, Pea Family and Gourd Family, and then Mustard Family, Composite Family, Mallow Family as well as view and admire plants. On severelly damaged crops, there were 100.4 tunnels and 46.3 larvae on each leaf, the rate of damaged leaf was 85.2%, the plant rate of bearing insect pests and damaged were all 100%. And studies showed that American leafminer began to tunnel leaf from lower leaf segments of plants, there were much more larvea on middle and upper than on lower leaf segments, and most of damaged leaf segments moved up step by step. According to rearing in laboratory and observing in field, we obtained the developmental durations of esch developmental stage of American leafminer on eggplant, pumpkin and kidney bean, respectively. Meanwhile, we observed and described the habits of each developmental stage of it.