著者

香取 郁夫 土原 和子

出版者

近畿大学

雑誌

基盤研究(C)

巻号頁・発行日

2019-04-01

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仮説A「柔らかい突起は食草探索に役立つ」の検証実験をホソオチョウ幼虫を用いて行う。以下の2実験に細分される。実験A1:突起有り・無しの幼虫による食草探索実験。実験A2:突起表面の微細構造の観察と感覚子の種類の見極め仮説B「硬い突起は捕食者からの防衛に役立つ」の検証実験をゴマダラチョウ幼虫とフタオチョウ幼虫を用いて行う。以下の2実験に細分される。実験B1:天敵による突起有り・無しの幼虫の捕食実験。実験B2:突起表面の微細構造の観察と感覚子の種類の見極め

著者

香取 郁夫 田丸 真弓 横井 智之

出版者

日本応用動物昆虫学会

雑誌

日本応用動物昆虫学会誌 (ISSN:00214914)

巻号頁・発行日

vol.54, no.2, pp.77-84, 2010-05-25 (Released:2010-06-08)

参考文献数

29

被引用文献数

1 4

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Osmia orientalis has potential as a crop pollinator and this study examined its curious nesting habits. They were successfully induced to nest in empty snail shells placed in a field (19.8% nesting rate). The nesting rate was higher for larger shells of Euhadra amaliae than for smaller shells of Satsuma japonica. The rate was also higher for intact than damaged shells, but was not affected by the freshness of the shells. As a nesting environment, the insects preferred grass fields rather than denuded areas, spaces adjacent to buildings, or a forest edge. The overall sex ratio of O. orientalis within the shell nests was male biased (59.2% males). The sex distribution within the shell nests was as follows: when O. orientalis nested in S. japonica shells, all cells contained males; when they nested in E. amaliae shells, the innermost and second innermost cells were highly male biased, while the ratio of females increased gradually toward the outermost cells and was highest in the second outermost cells, while the male ratio recovered in the outermost cells. Finally, we discuss the possibility of using and the methods of managing O. orientalis as a crop pollinator.