Early Stages in the Recovery to Injury in the Dorsal Fin of the Atlantic Cod ( Gadus morhua )

• Published in: Journal of the Fisheries Research Board of Canada
• Main Authors: Townsley, P. M., Hughes, M. L.
• Format: Article in Journal/Newspaper
• Language: English
• Published: Canadian Science Publishing 1964
• Subjects: General Medicine; atlantic cod; Gadus morhua
• Online Access: http://dx.doi.org/10.1139/f64-027; http://www.nrcresearchpress.com/doi/pdf/10.1139/f64-027

The early stages in the recovery of the dorsal fin of the Atlantic cod (Gadus morhua) to a "clean cut injury" are described. It is concluded that the observed rapid epidermal migration, wound closure and cell mitosis are essentially the same in in-vivo as in in-vitro experiments. An accumulation of carbohydrate material occurs in the outermost layer of epidermal cells. There is a change in the carbohydrate composition or structure in the dermal layers at the site of injury. The basal epidermal cells rapidly divide in the in-vitro culture whereas only those basal epidermal cells in an in-vivo injury in close proximity to the injury divide. The surrounding nutrient medium in in-vitro cultures does not appear to be involved in the initial cell migration. However, ascorbic acid does stimulate epidermal migration, mucous secretion, and basal epidermal cell mitosis.