The relationship between flesh quality and numbers of Kudoa thyrsites plasmodia and spores in farmed Atlantic salmon, Salmo salar L.
Abstract Atlantic salmon, Salmo salar L., were exposed to Kudoa thyrsites (Myxozoa, Myxosporea)‐containing sea water for 15 months, and then harvested and assessed for parasite burden and fillet quality. At harvest, parasites were enumerated in muscle samples from a variety of somatic and opercular...
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crwiley:10.1046/j.1365-2761.2003.00477.x 2024-06-23T07:51:18+00:00 The relationship between flesh quality and numbers of Kudoa thyrsites plasmodia and spores in farmed Atlantic salmon, Salmo salar L. Dawson‐Coates, J A Chase, J C Funk, V Booy, M H Haines, L R Falkenberg, C L Whitaker, D J Olafson, R W Pearson, T W 2003 http://dx.doi.org/10.1046/j.1365-2761.2003.00477.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2761.2003.00477.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2761.2003.00477.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Journal of Fish Diseases volume 26, issue 8, page 451-459 ISSN 0140-7775 1365-2761 journal-article 2003 crwiley https://doi.org/10.1046/j.1365-2761.2003.00477.x 2024-06-06T04:21:50Z Abstract Atlantic salmon, Salmo salar L., were exposed to Kudoa thyrsites (Myxozoa, Myxosporea)‐containing sea water for 15 months, and then harvested and assessed for parasite burden and fillet quality. At harvest, parasites were enumerated in muscle samples from a variety of somatic and opercular sites, and mean counts were determined for each fish. After 6 days storage at 4 °C, fillet quality was determined by visual assessment and by analysis of muscle firmness using a texture analyzer. Fillet quality could best be predicted by determining mean parasite numbers and spore counts in all eight tissue samples (somatic and opercular) or in four fillet samples, as the counts from opercular samples alone showed greater variability and thus decreased reliability. The variability in both plasmodia and spore numbers between tissue samples taken from an individual fish indicated that the parasites were not uniformly distributed in the somatic musculature. Therefore, to best predict the probable level of fillet degradation caused by K. thyrsites infections, multiple samples must be taken from each fish. If this is performed, a mean plasmodia count of 0.3 mm −2 or a mean spore count of 4.0 × 10 5 g −1 of tissue are the levels where the probability of severe myoliquefaction becomes a significant risk. Article in Journal/Newspaper Atlantic salmon Salmo salar Wiley Online Library Journal of Fish Diseases 26 8 451 459 |
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Open Polar |
collection |
Wiley Online Library |
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crwiley |
language |
English |
description |
Abstract Atlantic salmon, Salmo salar L., were exposed to Kudoa thyrsites (Myxozoa, Myxosporea)‐containing sea water for 15 months, and then harvested and assessed for parasite burden and fillet quality. At harvest, parasites were enumerated in muscle samples from a variety of somatic and opercular sites, and mean counts were determined for each fish. After 6 days storage at 4 °C, fillet quality was determined by visual assessment and by analysis of muscle firmness using a texture analyzer. Fillet quality could best be predicted by determining mean parasite numbers and spore counts in all eight tissue samples (somatic and opercular) or in four fillet samples, as the counts from opercular samples alone showed greater variability and thus decreased reliability. The variability in both plasmodia and spore numbers between tissue samples taken from an individual fish indicated that the parasites were not uniformly distributed in the somatic musculature. Therefore, to best predict the probable level of fillet degradation caused by K. thyrsites infections, multiple samples must be taken from each fish. If this is performed, a mean plasmodia count of 0.3 mm −2 or a mean spore count of 4.0 × 10 5 g −1 of tissue are the levels where the probability of severe myoliquefaction becomes a significant risk. |
format |
Article in Journal/Newspaper |
author |
Dawson‐Coates, J A Chase, J C Funk, V Booy, M H Haines, L R Falkenberg, C L Whitaker, D J Olafson, R W Pearson, T W |
spellingShingle |
Dawson‐Coates, J A Chase, J C Funk, V Booy, M H Haines, L R Falkenberg, C L Whitaker, D J Olafson, R W Pearson, T W The relationship between flesh quality and numbers of Kudoa thyrsites plasmodia and spores in farmed Atlantic salmon, Salmo salar L. |
author_facet |
Dawson‐Coates, J A Chase, J C Funk, V Booy, M H Haines, L R Falkenberg, C L Whitaker, D J Olafson, R W Pearson, T W |
author_sort |
Dawson‐Coates, J A |
title |
The relationship between flesh quality and numbers of Kudoa thyrsites plasmodia and spores in farmed Atlantic salmon, Salmo salar L. |
title_short |
The relationship between flesh quality and numbers of Kudoa thyrsites plasmodia and spores in farmed Atlantic salmon, Salmo salar L. |
title_full |
The relationship between flesh quality and numbers of Kudoa thyrsites plasmodia and spores in farmed Atlantic salmon, Salmo salar L. |
title_fullStr |
The relationship between flesh quality and numbers of Kudoa thyrsites plasmodia and spores in farmed Atlantic salmon, Salmo salar L. |
title_full_unstemmed |
The relationship between flesh quality and numbers of Kudoa thyrsites plasmodia and spores in farmed Atlantic salmon, Salmo salar L. |
title_sort |
relationship between flesh quality and numbers of kudoa thyrsites plasmodia and spores in farmed atlantic salmon, salmo salar l. |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1046/j.1365-2761.2003.00477.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1365-2761.2003.00477.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1365-2761.2003.00477.x |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
Journal of Fish Diseases volume 26, issue 8, page 451-459 ISSN 0140-7775 1365-2761 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1365-2761.2003.00477.x |
container_title |
Journal of Fish Diseases |
container_volume |
26 |
container_issue |
8 |
container_start_page |
451 |
op_container_end_page |
459 |
_version_ |
1802642356248248320 |