The influence of Gyrodactylus salaris Malmberg 1957 (Monogenea) on the epidermis of Atlantic salmon, Salmo salar L., and brook trout, Salvelinus fontinalis (Mitchill): experimental studies
Abstract The effect of Gyrodactylus salaris on the epidermal structure of hatchery‐reared brook trout parr and Norwegian Atlantic salmon parr was evaluated. Both species were initially susceptible to this parasite, but whereas populations on salmon increased until the host died, brook trout responde...
Published in: | Journal of Fish Diseases |
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Online Access: | http://dx.doi.org/10.1046/j.1365-2761.1998.00099.x http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2761.1998.00099.x https://onlinelibrary.wiley.com/doi/full-xml/10.1046/j.1365-2761.1998.00099.x https://onlinelibrary.wiley.com/doi/full/10.1046/j.1365-2761.1998.00099.x |
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crwiley:10.1046/j.1365-2761.1998.00099.x 2024-06-02T08:03:33+00:00 The influence of Gyrodactylus salaris Malmberg 1957 (Monogenea) on the epidermis of Atlantic salmon, Salmo salar L., and brook trout, Salvelinus fontinalis (Mitchill): experimental studies Sterud Harris Bakke 1998 http://dx.doi.org/10.1046/j.1365-2761.1998.00099.x http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2761.1998.00099.x https://onlinelibrary.wiley.com/doi/full-xml/10.1046/j.1365-2761.1998.00099.x https://onlinelibrary.wiley.com/doi/full/10.1046/j.1365-2761.1998.00099.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Diseases volume 21, issue 4, page 257-263 ISSN 0140-7775 1365-2761 journal-article 1998 crwiley https://doi.org/10.1046/j.1365-2761.1998.00099.x 2024-05-03T10:45:55Z Abstract The effect of Gyrodactylus salaris on the epidermal structure of hatchery‐reared brook trout parr and Norwegian Atlantic salmon parr was evaluated. Both species were initially susceptible to this parasite, but whereas populations on salmon increased until the host died, brook trout responded to, and eventually eliminated, their infections. Salmon skin samples taken 14 days p.i. showed a reduced mucous cell concentration (less than 1500 cells mm –2 on the head compared with 2000 cells mm –2 in controls; the same trend was also seen in other sites) and the epidermis was thinner (48 μm compared with 60 μm on pectoral fins; similar trend seen in other sites) than in uninfected controls kept under identical conditions. Brook trout skin samples were taken 50 days p.i., when the hosts had responded to, and almost eliminated, their infections. No change was then observed in mucous cell density, while the number of epidermal cell layers and the epidermal thickness of brook trout had increased slightly following infection. These results are related to the nature of the host response, and the thinning of the epidermis and loss of mucous cells may in some way be related to the inability of Norwegian salmon parr to respond to the parasite. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Diseases 21 4 257 263 |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract The effect of Gyrodactylus salaris on the epidermal structure of hatchery‐reared brook trout parr and Norwegian Atlantic salmon parr was evaluated. Both species were initially susceptible to this parasite, but whereas populations on salmon increased until the host died, brook trout responded to, and eventually eliminated, their infections. Salmon skin samples taken 14 days p.i. showed a reduced mucous cell concentration (less than 1500 cells mm –2 on the head compared with 2000 cells mm –2 in controls; the same trend was also seen in other sites) and the epidermis was thinner (48 μm compared with 60 μm on pectoral fins; similar trend seen in other sites) than in uninfected controls kept under identical conditions. Brook trout skin samples were taken 50 days p.i., when the hosts had responded to, and almost eliminated, their infections. No change was then observed in mucous cell density, while the number of epidermal cell layers and the epidermal thickness of brook trout had increased slightly following infection. These results are related to the nature of the host response, and the thinning of the epidermis and loss of mucous cells may in some way be related to the inability of Norwegian salmon parr to respond to the parasite. |
format |
Article in Journal/Newspaper |
author |
Sterud Harris Bakke |
spellingShingle |
Sterud Harris Bakke The influence of Gyrodactylus salaris Malmberg 1957 (Monogenea) on the epidermis of Atlantic salmon, Salmo salar L., and brook trout, Salvelinus fontinalis (Mitchill): experimental studies |
author_facet |
Sterud Harris Bakke |
author_sort |
Sterud |
title |
The influence of Gyrodactylus salaris Malmberg 1957 (Monogenea) on the epidermis of Atlantic salmon, Salmo salar L., and brook trout, Salvelinus fontinalis (Mitchill): experimental studies |
title_short |
The influence of Gyrodactylus salaris Malmberg 1957 (Monogenea) on the epidermis of Atlantic salmon, Salmo salar L., and brook trout, Salvelinus fontinalis (Mitchill): experimental studies |
title_full |
The influence of Gyrodactylus salaris Malmberg 1957 (Monogenea) on the epidermis of Atlantic salmon, Salmo salar L., and brook trout, Salvelinus fontinalis (Mitchill): experimental studies |
title_fullStr |
The influence of Gyrodactylus salaris Malmberg 1957 (Monogenea) on the epidermis of Atlantic salmon, Salmo salar L., and brook trout, Salvelinus fontinalis (Mitchill): experimental studies |
title_full_unstemmed |
The influence of Gyrodactylus salaris Malmberg 1957 (Monogenea) on the epidermis of Atlantic salmon, Salmo salar L., and brook trout, Salvelinus fontinalis (Mitchill): experimental studies |
title_sort |
influence of gyrodactylus salaris malmberg 1957 (monogenea) on the epidermis of atlantic salmon, salmo salar l., and brook trout, salvelinus fontinalis (mitchill): experimental studies |
publisher |
Wiley |
publishDate |
1998 |
url |
http://dx.doi.org/10.1046/j.1365-2761.1998.00099.x http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2761.1998.00099.x https://onlinelibrary.wiley.com/doi/full-xml/10.1046/j.1365-2761.1998.00099.x https://onlinelibrary.wiley.com/doi/full/10.1046/j.1365-2761.1998.00099.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Diseases volume 21, issue 4, page 257-263 ISSN 0140-7775 1365-2761 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2761.1998.00099.x |
container_title |
Journal of Fish Diseases |
container_volume |
21 |
container_issue |
4 |
container_start_page |
257 |
op_container_end_page |
263 |
_version_ |
1800748119050158080 |