Hostname: page-component-8448b6f56d-c47g7 Total loading time: 0 Render date: 2024-04-23T23:16:50.883Z Has data issue: false hasContentIssue false

The photosensitive pigments in the retinae of deep-sea fish

Published online by Cambridge University Press:  11 May 2009

E. J. Denton
Affiliation:
The Plymouth Laboratory
F. J. Warren
Affiliation:
The Plymouth Laboratory

Extract

Measurements were made on the intact retinae dissected from freshly caught deep-sea fish. The unbleached retinae of such fish are not rose-pink like the retinae of most coastal fish or purple like the retinae of most freshwater fish, but are golden in colour.

The golden colours are of photosensitive pigments which give retinal absorption curves similar in shape to frog's rhodopsin, but with maxima of absorption displaced on the average about 15 mμ. towards the blue end of the spectrum. The names ‘chrysopsins’ or visual golds are suggested for this group of pigments.

The density of such photosensitive pigments is often very high. Retinal density changes on bleaching of more than 1.0 has been found for several deepsea fish. These probably correspond to absolute retinal densities of pigment of about 1.3, i.e. the absorption of 95% of blue-green light striking the retina.

The conger and silver freshwater eels have retinae containing similar golden-coloured pigments. These eels begin their lives in the deep ocean and return there when mature to spawn.

The significance of this type of photosensitive pigment in the vision of deep-sea fish is discussed, and an estimate is made of the depths at which deepsea fish will see daylight.

Type
Research Article
Copyright
Copyright © Marine Biological Association of the United Kingdom 1957

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Barlow, H., 1956. Retinal noise and absolute threshold. J. opt. Soc. Amer., Vol. 46, pp. 634–9.CrossRefGoogle ScholarPubMed
Barlow, H., 1957. Purkinje Shift and Retinal Noise. Nature, Lond., Vol. 179, pp. 255–6.Google Scholar
Beebe, W., 1935. Half Mile Down. London: John Lane.Google Scholar
Bridges, C. D. B., 1956. The visual pigments of the Rainbow trout (Salmo irideus). J. Physiol., Vol. 134, pp. 620–9.Google Scholar
Clarke, G. L., 1936. On the depth at which fish can see. Ecology, Vol. 17, pp. 452–6.Google Scholar
Clarke, G. L. & Wertheim, G. K., 1956. Measurements of illumination at great depths and at night in the Atlantic Ocean by means of a new bathyphotometer. Deep-Sea Res., Vol. 3, pp. 189205.Google Scholar
Dartnall, H. J. A., 1955. Visual pigments of the bleak (Alburnus lucidus). J. Physiol., Vol. 128, pp. 131–56.Google Scholar
Denton, E. J., 1954. Une novelle méthode pour determiner la courbe d'absorption du pourpre rétinien. C.R. Acad. Sci., Paris, T. 239, pp. 1315–6.Google Scholar
Denton, E. J. & Pirenne, M. H., 1954. The absolute sensitivity and functional stability of the human eye. J. Physiol., Vol. 123, pp. 417–42.CrossRefGoogle ScholarPubMed
Denton, E. J. & Walker, M. A., 1957. The visual pigment of the conger eel. (In preparation.)Google Scholar
Denton, E. J. & Warren, F. J., 1956. Visual pigments of deep sea fish. Nature, Lond., Vol. 178, p. 1059.CrossRefGoogle ScholarPubMed
Denton, E. J. & Wyllie, J. H., 1955. Study of the photosensitive pigments in the pink and green rods of the frog. J. Physiol., Vol. 127, pp. 81–9.CrossRefGoogle ScholarPubMed
Jerlov, N. G., 1947–8. Optical studies of ocean waters. Rep. Swedish deep-sea Exped., Vol. 3, Fasc. 1, Physics and Chemistry, pp. 159.Google Scholar
Kühne, W., 1878. The Photochemistry of the Retina and on Visual Purple. (Translated by M., Foster.) London: Macmillan.Google Scholar
Le Grand, Y., 1948. Lumière et couleurs. Optique Physiologique, Vol. 2. Paris. Editions de la Revue d'Optique.Google Scholar
Marshall, N. B., 1954. Aspects of Deep Sea Biology. London: Hutchinson's.Google Scholar
Rushton, W. A. H., 1956. The rhodopsin density in the human rods. J. Physiol., Vol. 134, pp. 3046.CrossRefGoogle ScholarPubMed
St George, R. C. C, 1952. The interplay of light and heat in bleaching rhodopsin. J. gen. Physiol., Vol. 35, pp. 495517Google Scholar
Stiles, W. S., 1948. The physical interpretation of the spectral sensitivity curve of the eye. Transactions of the Optical Convention of the Worshipful Company of Spectacle Makers, 1948, pp. 97107. London.Google Scholar
Wald, G., 1945–6. The chemical evolution of vision. Harvey Lect., Ser. 41, pp. 117–60.Google Scholar
Wald, G., 1938–9. The porphyropsin visual system. J. gen. Physiol., Vol. 22, PP. 775–93CrossRefGoogle Scholar