Rapid temperature-dependent wound closure following adipose fin clipping of Atlantic salmon Salmo salar L.

Andrews, M; Stormoen, M; Schmidt-Posthaus, Heike; Wahli, Thomas; Midtlyng, P J (2015). Rapid temperature-dependent wound closure following adipose fin clipping of Atlantic salmon Salmo salar L. Journal of fish diseases, 38(6), pp. 523-531. Blackwell 10.1111/jfd.12261

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Three groups of Atlantic salmon were kept at a constant temperature of 4, 10 and 14 °C. The adipose fins were removed; six fish/group were sampled at 11 subsequent time points post-clipping. Samples were prepared for histopathological examination to study the course of re-epithelization. A score sheet was developed to assess the regeneration of epidermal and dermal cell types. Wounds were covered by a thin epidermal layer between 4 and 6 h post-clipping at 10 and 14 °C. In contrast, wound closure was completed between 6 and 12 h in fish held at a constant temperature of 4 °C. By 18 h post-clipping, superficial cells, cuboidal cells, prismatic basal cells and mucous cells were discernible in all temperature groups, rapidly progressing towards normal epidermal structure and thickness. Within the observation period, only minor regeneration was found in the dermal layers. A positive correlation between water temperature and healing rates was established for the epidermis. The rapid wound closure rate, epidermal normalization and the absence of inflammatory reaction signs suggest that adipose fin clipping under anaesthesia constitutes a minimally invasive method that may be used to mark large numbers of salmon presmolts without compromising fish welfare.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP)
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Center for Fish and Wildlife Health (FIWI)

UniBE Contributor:

Schmidt-Posthaus, Heike and Wahli, Thomas

Subjects:

600 Technology > 630 Agriculture

ISSN:

0140-7775

Publisher:

Blackwell

Language:

English

Submitter:

Lucia Gugger-Raaflaub

Date Deposited:

19 Apr 2016 15:18

Last Modified:

19 Apr 2016 15:18

Publisher DOI:

10.1111/jfd.12261

PubMed ID:

24917430

Uncontrolled Keywords:

animal welfare; epidermis; healing; integument; marking; skin

BORIS DOI:

10.7892/boris.79782

URI:

https://boris.unibe.ch/id/eprint/79782

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