{"title":"Studies on insects and mites causing galls on the leaves of common ash Fraxinus excelsior L. in the Ojców National Park in Poland","authors":"Małgorzata Skrzypczyńska","doi":"10.1046/j.1439-0280.2002.02002.x","DOIUrl":null,"url":null,"abstract":"<p>The occurrence frequency of galls caused by insects and mites on the leaves of <i>Fraxinus excelsior</i> 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 <i>Dasineura fraxinea</i> (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 <i>Dasineura fraxinea</i> and <i>Vasates fraxini</i> (Nalepa) in 2000 as well as <i>D. fraxinea</i> and <i>Psyllopsis fraxini</i> (L.) in 2001.</p>","PeriodicalId":100103,"journal":{"name":"Anzeiger für Sch?dlingskunde","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2002-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1046/j.1439-0280.2002.02002.x","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Anzeiger für Sch?dlingskunde","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1046/j.1439-0280.2002.02002.x","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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.
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