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Evidence for instantaneous e-vector detection in the honeybee using an associative learning paradigm

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タイトル: Evidence for instantaneous e-vector detection in the honeybee using an associative learning paradigm
著者: Sakura, Midori 著作を一覧する
Okada, Ryuichi 著作を一覧する
Aonuma, Hitoshi 著作を一覧する
キーワード: polarization vision
dorsal rim area
proboscis extension reflex
発行日: 2012年 2月 7日
出版者: The Royal Society
誌名: Proceedings of the Royal Society B : Biological Sciences
巻: 279
号: 1728
開始ページ: 535
終了ページ: 542
出版社 DOI: 10.1098/rspb.2011.0929
抄録: Many insects use the polarization pattern of the sky for obtaining compass information during orientation or navigation. E-vector information is collected by a specialized area in the dorsal-most part of the compound eye, the dorsal rim area (DRA). We tested honeybees' capability of learning certain e-vector orientations by using a classical conditioning paradigm with the proboscis extension reflex. When one e-vector orientation (CS+) was associated with sugar water (US), while another orientation (CS-) was not rewarded, the honeybees could discriminate CS+ from CS-. Bees, whose DRA was inactivated by painting, did not learn CS+. When ultraviolet polarized light (350 nm) was used for CS, the bees discriminated CS+ from CS-, but no discrimination was observed in blue (442 nm) or green light (546 nm). Our data indicate that honeybees can learn and discriminate between different e-vector orientations, sensed by the UV receptors of the DRA, suggesting that bees can determine their flight direction from polarized UV skylight during foraging. Fixing the bees' heads during the experiments did not prevent learning, indicating that they use an "instantaneous" algorithm of e-vector detection; i.e. the bees do not need to actively scan the sky with their DRAs ("sequential" method) to determine e-vector orientation.
Relation (URI):
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 青沼 仁志


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