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Studies on ulcerative dermal necrosis of salmonids
Author(s) -
Roberts Ronald J.,
Shearer W. M.,
Elson K. G. R.,
Munro A. L. S.
Publication year - 1970
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1970.tb03278.x
Subject(s) - biology , basement membrane , dermis , epithelium , necrosis , secretion , electron microscope , mucus , ultrastructure , anatomy , basal (medicine) , pathology , vesicle , microbiology and biotechnology , membrane , endocrinology , biochemistry , genetics , medicine , ecology , physics , insulin , optics
The skin of the head of adult Atlantic salmon S. solar L. was examined by light and electron microscopy. The general structure resembled that of most other vertebrates, but in common with other fish, the melanocytes were restricted to the papillary layer of the dermis. The mucus secreting cells were shown to elaborate a series of separate membrane bound vesicles of secretion. The basement‐membrane was complex, with a system of primary, and secondary micro‐papillae showing close adherence to the bases of the epithelial cells, which were modified to form a thick, electron dense basal plasma membrane. No evidence to suggest a reason for the localization of the early lesions of ulcerative dermal necrosis to specific areas of the epithelium of the head was adduced.