Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-22T18:14:03.194Z Has data issue: false hasContentIssue false
  • English
  • Français

On the organization of silvery layers in the skin of the Atlantic salmon (Salmo salar) during smoltification and on the regeneration of these layers underAbnormal lighting conditions

Published online by Cambridge University Press:  11 May 2009

E. J. Denton  and
R. L. Saunders
E. J. Denton
Affiliation:
Biological Station, St Andrews, New Brunswick, Canada
R. L. Saunders
Affiliation:
Biological Station, St Andrews, New Brunswick, Canada
Get access Rights & Permissions [Opens in a new window]

Extract

The reflecting layers in the external surfaces of salmon were studied during smoltification by making direct observations on the reflecting structures. The relationships between the reflecting layers in the epithelium external to the scales, in the tissues of the scales, and in the skin internal to the scales are given. Some fish, including fish blinded by pseudobranchectomy were reared under very abnormal lighting conditions and the processes of silvering and regeneration of scales followed on them. It was found that the pattern of silvering in smoltification and regeneration was not at all affected by lighting and that, although regenerated scales can easily be distinguished in other ways from those they replace, the orientations and reflectivities of their plate-lets are, with occasional exceptions, almost indistinguishable from those they replace.

Type
Research Article
Information
Journal of the Marine Biological Association of the United Kingdom , Volume 52 , Issue 4 , November 1972 , pp. 889 - 898
Copyright
Copyright © Marine Biological Association of the United Kingdom 1972

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

Bone, Q. & Denton, E. J. 1971. The osmotic effects of electron microscope fixatives. J. Cell Biol., Vol. 49, pp. 571–81.CrossRefGoogle ScholarPubMed
Denton, E. J. 1970. On the organization of reflecting surfaces in some marine animals. Phil. Trans. R. Soc. B, Vol. 258, pp. 285–313.Google ScholarPubMed
Denton, E. J. & Land, M. F. 1971. Mechanism of reflexion in silvery layersoffish and cephalo-pods. Proc. R. Soc. B, Vol. 178, pp. 43–61.Google Scholar
Denton, E. J. & Nicol, J. A. C 1966. A survey of reflectivity in silvery teleosts. J. mar. biol. Ass. U.K., Vol. 46, pp. 685–722.CrossRefGoogle Scholar
Johnston, C. E. & Eales, J. G. 1967. Purinesin the integument of the Atlantic salmon (Salmo salar) during parr-smolt transformations. J. Fish. Res. Bd Can., Vol. 24, pp. 955–64.CrossRefGoogle Scholar
Johnston, C. E. & Eales, J. G. 1968. Influence of temperature and photoperiod on guanine and hypoxanthine levels in skin and scales of Atlantic salmon (Salmosalar) during parr-smolt transformations. J.Fish. Res. Bd Can., Vol. 25, pp. 1901–9.CrossRefGoogle Scholar
Markert, J. R. & Vanstone, W. E. 1966. Pigments in the belly skin of coho salmon (Oncorhynchus kisutch). J. Fish. Res.Bd Can., Vol. 23, pp. 1095–8.CrossRefGoogle Scholar
Morgan, T. H. 1901. Regeneration, Columbia University Biological Series VII. 316 pp. London: Macmillan.Google Scholar
Parry, G. & Holliday, F. G. T. 1960. An experimental analysis of the function of the pseudo-branch in teleosts. J. exp. Biol., Vol. 37, pp. 344–54.Google Scholar
Robertson, O. H. 1948. The occurrence of increased activity of the thyroid gland in rainbow trout at the time of transformation from parr to silvery smolt. Physiol. Zool., Vol. 21, pp. 282–95.CrossRefGoogle ScholarPubMed
Sumner, F. B. 1944. Vision and guanine production in fish. Proc. Natn. Acad. Set., Vol. 30, pp. 285–94.CrossRefGoogle Scholar