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A study on the structure of the whiting integument merlangius merlangus

, : A study on the structure of the whiting integument merlangius merlangus. Journal of the Marine Biological Association of the United Kingdom 56(1): 213-226

The histology and histochemistry of whiting skin was studied in larval, juvenile and adult fish. The adult specimens were obtained throughout the year but there was no evidence of seasonal variation in the areas of the body sampled. The skin of the whiting was considerably more complex than that of any other teleost fish which was described in detail. The epidermis of the mature fish comprises 5 layers, consisting of Malpighian cells and a variety of other structures including large cystic bullae, which ultrastructurally and histochemically are relatively amorphous but comprise a major proportion of the epidermis. A reticulum of epidermal melanocytes occurs above these structures and 2 types of mucous cells are described. The major histochemical feature of the epidermis was the alkaline phosphatase reaction, similar to that found in higher animals. Succinic dehydrogenase activity was found at all levels. The epithelial mucins were mainly acid mucopolysaccharide with a small sialic acid component and a greater proportion of sulfated muco-substance. The dermis was morphologically similar to that of other scaled fishes. Mast cells were particularly prominent and occasional non-pigmented melanophores were seen.


DOI: 10.1017/s0025315400020555

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