Saccular cells in the epidermis of Atlantic cod Gadus morhua L.
Infectious diseases are one of the main factors having a negative influence on the Atlantic cod aquaculture. Fish epidermis is a barrier which provides primary interaction between the host and pathogenic organisms. The study of the epidermis of the Atlantic cod Gadus morhua L. has been carried out o...
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Murmansk State Technical University
2019
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ftdoajarticles:oai:doaj.org/article:e010e7fa5f04474497400a5693741f44 2023-05-15T15:26:44+02:00 Saccular cells in the epidermis of Atlantic cod Gadus morhua L. N. G. Zhuravleva Е. A. Ishkova Ottesen Oddvar 2019-06-01T00:00:00Z https://doi.org/10.21443/1560-9278-2019-22-2-282-287 https://doaj.org/article/e010e7fa5f04474497400a5693741f44 RU rus Murmansk State Technical University http://vestnik.mstu.edu.ru/show.shtml?art=2017 https://doaj.org/toc/1560-9278 https://doaj.org/toc/1997-4736 doi:10.21443/1560-9278-2019-22-2-282-287 1560-9278 1997-4736 https://doaj.org/article/e010e7fa5f04474497400a5693741f44 Vestnik MGTU, Vol 22, Iss 2, Pp 282-287 (2019) saccular cells epidermis Atlantic cod secretory material мешковидные клетки эпидермис атлантическая треска секреторный материал General Works A article 2019 ftdoajarticles https://doi.org/10.21443/1560-9278-2019-22-2-282-287 2022-12-31T09:21:05Z Infectious diseases are one of the main factors having a negative influence on the Atlantic cod aquaculture. Fish epidermis is a barrier which provides primary interaction between the host and pathogenic organisms. The study of the epidermis of the Atlantic cod Gadus morhua L. has been carried out on the experimental base of the Nord University of Bodo (Norway). Ultrathin sectioning of cod epidermis has been carried out with the help of the Department of Electronic Microscopy of the University of Tromso (Norway). Embryos, pre-larvae from the moment of hatching and larvae up to 3 weeks after hatching, as well as juvenile cod at the age of 5 months, 1 year and 1.5 years have been selected for light-optical and electronic microscope examination. The material for optical studies is fixed with 10 % neutral formalin. The fixation of the material for electronic microscope studies has been made with 25 % glutaraldehyde (sodium cacodylate, pH 7.2). Saccular cells have been found in the cod epidermis of all investigated age groups. The cells have a round or predominantly oval shape and also vacuoles. Vacuoles are filled with an electron-transparent material, but most cells do not have secretory content. It has been found out that secretory material in most cases was absent in the vacuoles of opened cells, where vesicles and tubules, however, remained. During the research, morphological and functional features of these cells are first identified on the basis of studying their distribution, quantity and chemical composition depending on the age of the fish. New data on the spatial distribution of Atlantic cod saccular cells at different stages of ontogenesis have been presented. The results indicate the secretory, bactericidal and protective functions of the saccular cells in the epidermis of Atlantic cod and reflect the ecological features of cod as an epibenthic-pelagic species. Article in Journal/Newspaper atlantic cod Gadus morhua Tromso University of Tromso Directory of Open Access Journals: DOAJ Articles Norway Tromso ENVELOPE(16.546,16.546,68.801,68.801) Vestnik MGTU 22 1 282 287 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
Russian |
topic |
saccular cells epidermis Atlantic cod secretory material мешковидные клетки эпидермис атлантическая треска секреторный материал General Works A |
spellingShingle |
saccular cells epidermis Atlantic cod secretory material мешковидные клетки эпидермис атлантическая треска секреторный материал General Works A N. G. Zhuravleva Е. A. Ishkova Ottesen Oddvar Saccular cells in the epidermis of Atlantic cod Gadus morhua L. |
topic_facet |
saccular cells epidermis Atlantic cod secretory material мешковидные клетки эпидермис атлантическая треска секреторный материал General Works A |
description |
Infectious diseases are one of the main factors having a negative influence on the Atlantic cod aquaculture. Fish epidermis is a barrier which provides primary interaction between the host and pathogenic organisms. The study of the epidermis of the Atlantic cod Gadus morhua L. has been carried out on the experimental base of the Nord University of Bodo (Norway). Ultrathin sectioning of cod epidermis has been carried out with the help of the Department of Electronic Microscopy of the University of Tromso (Norway). Embryos, pre-larvae from the moment of hatching and larvae up to 3 weeks after hatching, as well as juvenile cod at the age of 5 months, 1 year and 1.5 years have been selected for light-optical and electronic microscope examination. The material for optical studies is fixed with 10 % neutral formalin. The fixation of the material for electronic microscope studies has been made with 25 % glutaraldehyde (sodium cacodylate, pH 7.2). Saccular cells have been found in the cod epidermis of all investigated age groups. The cells have a round or predominantly oval shape and also vacuoles. Vacuoles are filled with an electron-transparent material, but most cells do not have secretory content. It has been found out that secretory material in most cases was absent in the vacuoles of opened cells, where vesicles and tubules, however, remained. During the research, morphological and functional features of these cells are first identified on the basis of studying their distribution, quantity and chemical composition depending on the age of the fish. New data on the spatial distribution of Atlantic cod saccular cells at different stages of ontogenesis have been presented. The results indicate the secretory, bactericidal and protective functions of the saccular cells in the epidermis of Atlantic cod and reflect the ecological features of cod as an epibenthic-pelagic species. |
format |
Article in Journal/Newspaper |
author |
N. G. Zhuravleva Е. A. Ishkova Ottesen Oddvar |
author_facet |
N. G. Zhuravleva Е. A. Ishkova Ottesen Oddvar |
author_sort |
N. G. Zhuravleva |
title |
Saccular cells in the epidermis of Atlantic cod Gadus morhua L. |
title_short |
Saccular cells in the epidermis of Atlantic cod Gadus morhua L. |
title_full |
Saccular cells in the epidermis of Atlantic cod Gadus morhua L. |
title_fullStr |
Saccular cells in the epidermis of Atlantic cod Gadus morhua L. |
title_full_unstemmed |
Saccular cells in the epidermis of Atlantic cod Gadus morhua L. |
title_sort |
saccular cells in the epidermis of atlantic cod gadus morhua l. |
publisher |
Murmansk State Technical University |
publishDate |
2019 |
url |
https://doi.org/10.21443/1560-9278-2019-22-2-282-287 https://doaj.org/article/e010e7fa5f04474497400a5693741f44 |
long_lat |
ENVELOPE(16.546,16.546,68.801,68.801) |
geographic |
Norway Tromso |
geographic_facet |
Norway Tromso |
genre |
atlantic cod Gadus morhua Tromso University of Tromso |
genre_facet |
atlantic cod Gadus morhua Tromso University of Tromso |
op_source |
Vestnik MGTU, Vol 22, Iss 2, Pp 282-287 (2019) |
op_relation |
http://vestnik.mstu.edu.ru/show.shtml?art=2017 https://doaj.org/toc/1560-9278 https://doaj.org/toc/1997-4736 doi:10.21443/1560-9278-2019-22-2-282-287 1560-9278 1997-4736 https://doaj.org/article/e010e7fa5f04474497400a5693741f44 |
op_doi |
https://doi.org/10.21443/1560-9278-2019-22-2-282-287 |
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22 |
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