魚類網膜の明暗順応の状態と照度との関係
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概要
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1) Roughly speaking, the retinae of Lzteolabrax japonicus and Cyprinus carpio show more marked dark-adaptation before than after midnight, when the fish are kept in very low intensity of illumination. In Lateolabrax, the change from bright- to dark-adaptation of the cone position can be brought forth in the illumination of about 0. 04 lux before midnight and in about 0. 01 lux after that (Fig. 3). In Cyprinus, it is 0. 0005 lux before midnight and less than 0. 00006 lux after that (Fig. 4). 2) The difference of illumination between before and after midnight may be one of the reasons why the fish-gathering by light in the fishery is usually more effective before midnight than after that. 3) The difference of the illumination between the two species may show that the retina of Cyprinus is more sensitive to low illumination than that of Lateolabrax.
- 公益社団法人 日本水産学会の論文