Some Aspects of Photoreception and Vision in Fishes

摘要: Publisher Summary The most important organ for photoreception in fishes is the eye. eye has special significance because it a visual organ, capable of image-formation. This chapter discusses several aspects fishes, especially marine fishes. It deals with photobehavior and functioning environments. Rhodopsins, based on vitamin A 1 aldehyde, are characteristic They have great range absorption maxima, ranging from maxima around 480 mμ (visual golds or chrysopsins deep-sea species) to purple rhodopsins 510 turbid coastal waters. characteristics these various scotopic pigments related quality light environment–residual blue daylight luminescence clear oceanic waters, filtered blue-green green inshore Recent ethological ecological studies concerned photio stimuli dealt color changes, schooling, migratory movements katadromous salmon trout, diurnal vertical migrations, responses intermittent light, colored lights strong steady lights, operation sun-compass reactions horizontal migrations.