Co‐infection of Nucleospora cyclopteri (Microsporidia) and Kudoa islandica (Myxozoa) in farmed lumpfish, Cyclopterus lumpus L., in Norway: a case report
Abstract This study describes a co‐infection of Kudoa islandica (Myxozoa) and Nucleospora cyclopteri (Microsporida) in farmed lumpfish, Cyclopterus lumpus L. , in Norway. Several other parasites ( Cryptocotyle sp., protozoan ciliates and Gyrodactylus sp.) were also found in gills. In June 2013, the...
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crwiley:10.1111/jfd.12372 2024-03-31T07:53:32+00:00 Co‐infection of Nucleospora cyclopteri (Microsporidia) and Kudoa islandica (Myxozoa) in farmed lumpfish, Cyclopterus lumpus L., in Norway: a case report Alarcón, M Thoen, E Poppe, T T Bornø, G Mohammad, S N Hansen, H Norwegian Veterinary Institute 2015 http://dx.doi.org/10.1111/jfd.12372 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfd.12372 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12372 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Diseases volume 39, issue 4, page 411-418 ISSN 0140-7775 1365-2761 Veterinary (miscellaneous) Aquatic Science journal-article 2015 crwiley https://doi.org/10.1111/jfd.12372 2024-03-04T13:02:33Z Abstract This study describes a co‐infection of Kudoa islandica (Myxozoa) and Nucleospora cyclopteri (Microsporida) in farmed lumpfish, Cyclopterus lumpus L. , in Norway. Several other parasites ( Cryptocotyle sp., protozoan ciliates and Gyrodactylus sp.) were also found in gills. In June 2013, the mortality in a farmed lumpfish population increased to 65%. Lumpfish showed erratic swimming behaviour and loss of weight. At necropsy, nodules in the kidney were the only visible lesions. Histologically, all fish showed severe changes with gill inflammation and necrosis in the spleen, kidney and liver. Haemorrhages and necrosis were observed in some hearts. Intracellular microsporidians associated with the lesions were detected in most organs using histological examination and Calcofluor White. Kudoa spores were diagnosed in the skeletal muscle, but no inflammatory response was associated with the presence of the plasmodia. Comparison of 18S ribosomal DNA sequences showed 100% similarity to Kudoa islandica and Nucleospora cyclopteri. Kudoa islandica and N. cyclopteri have previously been described associated with lesions in wild lumpfish in Iceland. In the present case, N. cyclopteri is believed to be the main cause of systemic pathology. This is the first description of K. islandica and N. cyclopteri causing pathology in farmed lumpfish in Norway. Article in Journal/Newspaper Iceland Wiley Online Library Norway Journal of Fish Diseases 39 4 411 418 |
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language |
English |
topic |
Veterinary (miscellaneous) Aquatic Science |
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Veterinary (miscellaneous) Aquatic Science Alarcón, M Thoen, E Poppe, T T Bornø, G Mohammad, S N Hansen, H Co‐infection of Nucleospora cyclopteri (Microsporidia) and Kudoa islandica (Myxozoa) in farmed lumpfish, Cyclopterus lumpus L., in Norway: a case report |
topic_facet |
Veterinary (miscellaneous) Aquatic Science |
description |
Abstract This study describes a co‐infection of Kudoa islandica (Myxozoa) and Nucleospora cyclopteri (Microsporida) in farmed lumpfish, Cyclopterus lumpus L. , in Norway. Several other parasites ( Cryptocotyle sp., protozoan ciliates and Gyrodactylus sp.) were also found in gills. In June 2013, the mortality in a farmed lumpfish population increased to 65%. Lumpfish showed erratic swimming behaviour and loss of weight. At necropsy, nodules in the kidney were the only visible lesions. Histologically, all fish showed severe changes with gill inflammation and necrosis in the spleen, kidney and liver. Haemorrhages and necrosis were observed in some hearts. Intracellular microsporidians associated with the lesions were detected in most organs using histological examination and Calcofluor White. Kudoa spores were diagnosed in the skeletal muscle, but no inflammatory response was associated with the presence of the plasmodia. Comparison of 18S ribosomal DNA sequences showed 100% similarity to Kudoa islandica and Nucleospora cyclopteri. Kudoa islandica and N. cyclopteri have previously been described associated with lesions in wild lumpfish in Iceland. In the present case, N. cyclopteri is believed to be the main cause of systemic pathology. This is the first description of K. islandica and N. cyclopteri causing pathology in farmed lumpfish in Norway. |
author2 |
Norwegian Veterinary Institute |
format |
Article in Journal/Newspaper |
author |
Alarcón, M Thoen, E Poppe, T T Bornø, G Mohammad, S N Hansen, H |
author_facet |
Alarcón, M Thoen, E Poppe, T T Bornø, G Mohammad, S N Hansen, H |
author_sort |
Alarcón, M |
title |
Co‐infection of Nucleospora cyclopteri (Microsporidia) and Kudoa islandica (Myxozoa) in farmed lumpfish, Cyclopterus lumpus L., in Norway: a case report |
title_short |
Co‐infection of Nucleospora cyclopteri (Microsporidia) and Kudoa islandica (Myxozoa) in farmed lumpfish, Cyclopterus lumpus L., in Norway: a case report |
title_full |
Co‐infection of Nucleospora cyclopteri (Microsporidia) and Kudoa islandica (Myxozoa) in farmed lumpfish, Cyclopterus lumpus L., in Norway: a case report |
title_fullStr |
Co‐infection of Nucleospora cyclopteri (Microsporidia) and Kudoa islandica (Myxozoa) in farmed lumpfish, Cyclopterus lumpus L., in Norway: a case report |
title_full_unstemmed |
Co‐infection of Nucleospora cyclopteri (Microsporidia) and Kudoa islandica (Myxozoa) in farmed lumpfish, Cyclopterus lumpus L., in Norway: a case report |
title_sort |
co‐infection of nucleospora cyclopteri (microsporidia) and kudoa islandica (myxozoa) in farmed lumpfish, cyclopterus lumpus l., in norway: a case report |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1111/jfd.12372 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fjfd.12372 https://onlinelibrary.wiley.com/doi/pdf/10.1111/jfd.12372 |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Journal of Fish Diseases volume 39, issue 4, page 411-418 ISSN 0140-7775 1365-2761 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/jfd.12372 |
container_title |
Journal of Fish Diseases |
container_volume |
39 |
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4 |
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411 |
op_container_end_page |
418 |
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1795033387600183296 |