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タイトル: | Effects of combination between web density and size of spider mite on predation by a generalist and a specialist phytoseiid mite. |
著者: | Iwasa, Takuya Osakabe, Masahiro https://orcid.org/0000-0002-2246-3431 (unconfirmed) |
著者名の別形: | 刑部, 正博 |
キーワード: | Web size Web density Euseius sojaensis Neoseiulus womersleyi Tetranychidae Phytoseiidae |
発行日: | 10-Apr-2015 |
出版者: | Springer International Publishing |
誌名: | Experimental & applied acarology |
巻: | 66 |
号: | 2 |
開始ページ: | 219 |
終了ページ: | 225 |
抄録: | Complicated three-dimensional webs of silk threads produced by Tetranychus spider mites provide protection from predation by many generalist phytoseiid mite species. Accessibility to prey may be the most significant criterion for successful predation in complicated webs. To assess the protective effects of combination between web size and density, we compared predation on eggs of the two-spotted spider mite, Tetranychus urticae, by a generalist (Euseius sojaensis) and a specialist (Neoseiulus womersleyi) phytoseiid mite in the laboratory under manipulated web size and density. Web sizes negatively affected to the predation. Significant interactions were found between phytoseiid mite species and prey distribution; egg consumption by E. sojaensis was more in uniform distribution, but that by N. womersleyi, in contrast, was larger in contagious distribution. However, the egg consumption by E. sojaensis and N. womersleyi were both mitigated in larger webs. This area size depending mitigation was more effective to the predation by E. sojaensis. Although the mechanism of web size depending mitigation is unknown, web sizes might affect prey searching efficiency of this phytoseiid mite. Consequently, combination between web density and size are likely to affect not only a generalist E. sojaensis but also a specialist N. wormersleyi. |
著作権等: | The final publication is available at Springer via http://dx.doi.org/10.1007/s10493-015-9902-7. 許諾条件により本文ファイルは2016-04-10に公開. この論文は出版社版でありません。引用の際には出版社版をご確認ご利用ください。 This is not the published version. Please cite only the published version. |
URI: | http://hdl.handle.net/2433/198653 |
DOI(出版社版): | 10.1007/s10493-015-9902-7 |
PubMed ID: | 25860857 |
出現コレクション: | 学術雑誌掲載論文等 |
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