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Retinal Topography of Ganglion Cells and Putative UV-Sensitive Cones in Two Antarctic Fishes: Pagothenia borchgrevinki and Trematomus bernacchii (Nototheniidae)
https://repo.qst.go.jp/records/43021
https://repo.qst.go.jp/records/4302103f0f1ad-c20a-460c-83ce-1f381166e91c
| Item type | 学術雑誌論文 / Journal Article(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2002-12-19 | |||||
| タイトル | ||||||
| タイトル | Retinal Topography of Ganglion Cells and Putative UV-Sensitive Cones in Two Antarctic Fishes: Pagothenia borchgrevinki and Trematomus bernacchii (Nototheniidae) | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
| 資源タイプ | journal article | |||||
| アクセス権 | ||||||
| アクセス権 | metadata only access | |||||
| アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
| 著者 |
Miyazaki, Taeko
× Miyazaki, Taeko× Iwami, Tetsuo× Somiya, Hiroaki× Meyerrochow, Benno× 宮崎 多恵子 |
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| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Accessory corner cones (ACC) have recently been suggested to be UV-sensitive photoreceptor cells. With a view toward explaining prey detection, we examined the topography of retinal ganglion cells and ACCs in two Antarctic nototheniids occupying different ecological niches: the cryopelagic Pagothenia borchgrevinki and the benthic Trematomus bernacchii. Isodensity maps of retinal ganglion cells showed that the main visual axis, coincident with the feeding vector, was in a forward direction in both species. Visual acuity was determined as 3.64 and 4.77 cycles/degree for the respective species. In P. borchgrevinki the highest density of ACCs was associated with the eye’s main visual axis. This suggested that this species uses UV-vision during forward-swims and probably in encounters with prey. On the other hand, T. bernacchii possessed two horizontal band-shaped high-density areas of ACCs, which stretched from temporal to nasal and ventral to peripheral retinal regions. Therefore, this species apprears to use UV-vision to watch prey across the entire circumference of the lateral area and in the water column above its head. | |||||
| 書誌情報 |
Zoological Science 巻 19, p. 1223-1229, 発行日 2002 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 0289-0003 | |||||
