title: Microspectrophotometric studies on the visual pigment in the intact retina of the goldfish, Carassius auratus (Linn.).
abstract: The visual pigments in intact retinas of the common goldfish were examined by microspectrophotometry. Difference spectra free of photoproduct contamination had absorbance maxima at lambda527 nm +/- 2 nm. The average pigment density, about 0.32, was almost invariant with regard to retinal location and specimen size. Traces of a photoproduct absorbing maximally at lambda480-490 nm were found. The normalized "absorbance" curve deviated from standard templates. It was suggested that this was an effect of cross-coupling of energy and among photoreceptors. Finally, known action spectra show a red shift relative to the absorbance spectra measured.
mesh_terms: D000818:Animals; D003530:Cyprinidae / Q000502:physiology*; D006054:Goldfish / Q000502:physiology*; D010786:Photoreceptor Cells / Q000032:analysis / Q000033:anatomy & histology; D012168:Retinal Pigments / Q000032:analysis* / Q000502:physiology; D013053:Spectrophotometry
chemical_list: D012168:Retinal Pigments