Studies on insects and mites causing galls on the leaves of common ash Fraxinus excelsior L. in the Ojców National Park in Poland

Małgorzata Skrzypczyńska
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引用次数: 2

Abstract

The occurrence frequency of galls caused by insects and mites on the leaves of Fraxinus excelsior L. was investigated, based on leaf samples collected in the Ojców National Park in 2000 – 2001. The species composition of galls was identical in two consecutive years. Galls were caused by 5 species a total of 2881 galls. The most numerous species was Dasineura fraxinea (Kieffer) in both years.Index of occurrence frequency and Agrell's index of species co-existence have been calculated. This index reached the highest values in case of Dasineura fraxinea and Vasates fraxini (Nalepa) in 2000 as well as D. fraxinea and Psyllopsis fraxini (L.) in 2001.

波兰Ojców国家公园常见白蜡叶上引起虫蛀的虫螨研究
以2000 ~ 2001年在Ojców国家公园采集的黄曲霉(Fraxinus excelsior L.)叶片为研究对象,调查了黄曲霉(Fraxinus excelsior L.)叶片虫螨虫瘿的发生频率。连续两年虫瘿的种类组成基本一致。5种病原菌共产生2881个虫瘿。在这两年中最多的种是Dasineura fraxinea (Kieffer)。计算了物种共存的发生频率指数和格雷尔指数。该指数在2000年和2001年分别以水曲柳(Dasineura fraxinea)和水曲柳(Vasates fraxini)和水曲柳(Psyllopsis fraxini)最高。
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