15 0 0 0 OA 昆虫走光性の新しい理解と誘引要因としてのエッジ属性の解明
昆虫が正の走光性によって人工光源に集まることは,身近な生物現象である.昆虫走光性に関しては,コンパス理論,マッハバンド理論,オープンスペース理論という3つの主要な仮説が提案されているが,いずれも多様な走光性反応を十分に説明できてはいない.本研究では,顕著な走光性反応を示す幾つかの分類群の昆虫の飛翔軌跡と到達地点を解析し,それらの昆虫が光源と背景との境界部に向かうことを示した.本研究の結果は,既存の3つの仮説とは異なり,昆虫がその正の走光性において明暗や波長,そして偏光による視覚的エッジへ誘引されていることを示唆している.
3 0 0 0 OA 光源の違いがカメムシ類の誘引に及ぼす影響
- 著者
- 遠藤 信幸 弘中 満太郎
- 出版者
- 九州病害虫研究会
- 雑誌
- 九州病害虫研究会報 (ISSN:03856410)
- 巻号頁・発行日
- vol.63, pp.55-61, 2017-11-28 (Released:2019-02-13)
- 参考文献数
- 16
- 被引用文献数
- 2 2
The attractiveness of incandescent lamp (54W) and mercury lamp (100W) light sources to stink bugs (Heteroptera: Pentatomidae) was compared under field conditions. Although the degree of the attractive effect differed among stink bug species, 5.6–304.6 times as many bugs were caught in the mercury lamp trap than in the incandescent lamp trap. The total photon numbers in the spectral sensitivity region for stink bugs (250–650nm) were almost the same between the two lamps; however, the mercury lamp emitted about 16 times more photons than the incandescent lamp in the ultraviolet region (250–400nm), which is highly attractive to stink bugs. When the mercury lamp was covered with a UV-absorbing filter, which blocked about 90% of the photons in the ultraviolet region, the numbers of trapped Glaucias subpunctatus (Walker), Plautia stali Scott, and Halyomorpha halys(Stål) decreased to less than 25% of those trapped using the non-filtered mercury lamp. These results indicate that the high attractiveness of the mercury lamp to some stink bug species is partly due to strong light intensity in the ultraviolet region.