title: Spectral characteristics of photoreceptors and horizontal cells in the retina of the Siberian sturgeon Acipenser baeri Brandt.
abstract: In the retina of Siberian sturgeon, three spectral classes of photoreceptors were identified by microspectrophotometry. These were rods, oil drop-containing and oil drop-free cones possessing P549, and oil drop-containing cones possessing P613 and P465. With intracellular recordings, rod-driven, cone-driven, and mixed horizontal cells of luminosity type were found, as well as color-opponent horizontal cells of, at least, 6 kinds. Biphasic R/G cells received hyperpolarizing input either from rods or from green cones; in R/B cells, it was from blue cones. Other three types comprised biphasic G/B (or Y/B), RG/B, and triphasic G/BR cells. So the Chondrostean retina has the color-processing circuitry common for all ray-finned fishes.
authors.affiliation: Institute of Evolutionary Physiology & Biochemistry, Leningrad, Moscow, U.S.S.R.
authors.forename: V I
authors.initials: VI
authors.lastname: Govardovskii
authors.forename: A L
authors.initials: AL
authors.lastname: Byzov
authors.forename: L V
authors.initials: LV
authors.lastname: Zueva
authors.forename: N A
authors.initials: NA
authors.lastname: Polisczuk
authors.forename: E A
authors.initials: EA
authors.lastname: Baburina
mesh_terms: D000200:Action Potentials / Q000502:physiology; D000818:Animals; D003118:Color Perception / Q000502:physiology*; D005399:Fishes / Q000502:physiology*; D015591:Microspectrophotometry; D010786:Photoreceptor Cells / Q000502:physiology; D012160:Retina / Q000166:cytology / Q000502:physiology*