| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2013-01-18 |
| タイトル |
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タイトル |
Color discrimination at the spatial resolution limit in a swallowtail butterfly, Papilio xuthus |
| タイトル |
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タイトル |
Color discrimination at the spatial resolution limit in a swallowtail butterfly, Papilio xuthus |
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言語 |
en |
| 言語 |
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言語 |
eng |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 著者 |
TAKEUCHI, Yuichi
ARIKAWA, Kentaro
KINOSHITA, Michiyo
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| 著者別名 |
木下, 充代
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
Spatial resolution of insect compound eyes is much coarser than that of humans: a single pixel of the human visual system covers about 0.008° whereas that of diurnal insects is typically about 1.0°. Anatomically, the pixels correspond to single cone outer segments in humans and to single rhabdoms in insects. Although an outer segment and a rhabdom are equivalent organelles containing visual pigment molecules, they are strikingly different in spectral terms. The cone outer segment is the photoreceptor cell part that expresses a single type of visual pigment, and is therefore monochromatic. On the other hand, a rhabdom is composed of several photoreceptor cells with different spectral sensitivities and is therefore polychromatic. The polychromatic organization of the rhabdom suggests that insects can resolve wavelength information in a single pixel, which is an ability that humans do not have. We first trained the Japanese yellow swallowtail butterfly Papilio xuthus to feed on sucrose solution at a paper disk of certain color. We then let the trained butterflies discriminate disks of the training color and grey disks each presented in a Y-maze apparatus. Papilio correctly selected the colored disk when the visual angle was greater than 1.18° for blue, 1.53° for green or 0.96° for red: they appeared to see colors in single pixels to some extent. This ability may compensate their rather low spatial resolution. |
| 書誌情報 |
Journal of Experimental Biology
en : Journal of Experimental Biology
巻 209,
号 15,
p. 2873-2879,
発行日 2006-05-04
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| 出版者 |
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出版者 |
The Company of Biologists Ltd |
| ISSN |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
00220949 |
| DOI |
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関連タイプ |
isIdenticalTo |
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識別子タイプ |
DOI |
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関連識別子 |
http://doi.org/10.1242/jeb.02311 |
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関連名称 |
10.1242/jeb.02311 |
| 権利 |
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権利情報 |
© The Company of Biologists Limited 2006 |
| 関連サイト |
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識別子タイプ |
URI |
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関連識別子 |
http://www.biologists.com/dmm/dmm_information.html#anchor_access |
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関連名称 |
Copyright |
| フォーマット |
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内容記述タイプ |
Other |
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内容記述 |
application/pdf |
| 著者版フラグ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
2873.full (234.6 kB)
