Increasing intensities of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae with weight and sea age in returning adult Atlantic salmon, Salmo salar L., of coastal waters of Norway
Ninety wild Atlantic salmon, Salmo salar L., (1.5–10.3 kg) were caught in the Namsen Fjord near the mouth of River Namsen, mid-Norway, and examined for the presence and distribution of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae by di-gestion of the viscera and muscles in a pepsin/HCl...
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Online Access: | https://hdl.handle.net/11250/3041252 https://doi.org/10.1111/jfd.13369 |
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ftninstnf:oai:brage.nina.no:11250/3041252 2023-05-15T15:29:58+02:00 Increasing intensities of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae with weight and sea age in returning adult Atlantic salmon, Salmo salar L., of coastal waters of Norway Mo, Tor Atle Fossøy, Frode Poppe, Trygve T Namsen fjord, river Namsen, mid-Norway, Atlantic Ocean 2021 application/pdf https://hdl.handle.net/11250/3041252 https://doi.org/10.1111/jfd.13369 eng eng Journal of Fish Diseases. 2021, 1-15. urn:issn:0140-7775 https://hdl.handle.net/11250/3041252 https://doi.org/10.1111/jfd.13369 cristin:1903162 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021 The Authors CC-BY 1075-1089 44 Journal of Fish Diseases Anisakidae distribution musculature RVS Salmosalar viscera VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Peer reviewed Journal article 2021 ftninstnf https://doi.org/10.1111/jfd.13369 2023-01-11T23:45:16Z Ninety wild Atlantic salmon, Salmo salar L., (1.5–10.3 kg) were caught in the Namsen Fjord near the mouth of River Namsen, mid-Norway, and examined for the presence and distribution of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae by di-gestion of the viscera and muscles in a pepsin/HCl solution. All salmon were migrat-ing spawners after 1–4 years of feeding in the Atlantic Ocean. All 90 Atlantic salmon had A. simplex larvae in the viscera, and all, except two, had A. simplex larvae in the musculature. The number of A. simplex larvae in each fish varied between 3 and 181, and the total mean number of nematode larvae was 44.5. The intensity of A. sim-plex larvae was positively correlated with increasing weight and sea age of the host. However, the proportion of larvae in the muscle fillets decreased with increasing host weight and sea age. Atlantic salmon females had more A. simplex larvae than males. In all the fish examined, 70.2% of the A. simplex larvae were found in the viscera and 29.8% in the musculature. The majority (93%) of the larvae in the musculature oc-curred in the hypaxial sections anterior to the anus. As A. simplex larvae commonly occur in the musculature of wild Atlantic salmon, consumption of unfrozen, raw or semi- raw musculature represents a risk for humans developing anisakiasis.KEYWORDSAnisakidae, distribution, musculature, RVS, Salmosalar, viscera publishedVersion Article in Journal/Newspaper Atlantic salmon Salmo salar Norwegian Institute for Nature Research: Brage NINA Norway Journal of Fish Diseases 44 8 1075 1089 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
Anisakidae distribution musculature RVS Salmosalar viscera VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
spellingShingle |
Anisakidae distribution musculature RVS Salmosalar viscera VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 Mo, Tor Atle Fossøy, Frode Poppe, Trygve T Increasing intensities of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae with weight and sea age in returning adult Atlantic salmon, Salmo salar L., of coastal waters of Norway |
topic_facet |
Anisakidae distribution musculature RVS Salmosalar viscera VDP::Zoologiske og botaniske fag: 480 VDP::Zoology and botany: 480 |
description |
Ninety wild Atlantic salmon, Salmo salar L., (1.5–10.3 kg) were caught in the Namsen Fjord near the mouth of River Namsen, mid-Norway, and examined for the presence and distribution of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae by di-gestion of the viscera and muscles in a pepsin/HCl solution. All salmon were migrat-ing spawners after 1–4 years of feeding in the Atlantic Ocean. All 90 Atlantic salmon had A. simplex larvae in the viscera, and all, except two, had A. simplex larvae in the musculature. The number of A. simplex larvae in each fish varied between 3 and 181, and the total mean number of nematode larvae was 44.5. The intensity of A. sim-plex larvae was positively correlated with increasing weight and sea age of the host. However, the proportion of larvae in the muscle fillets decreased with increasing host weight and sea age. Atlantic salmon females had more A. simplex larvae than males. In all the fish examined, 70.2% of the A. simplex larvae were found in the viscera and 29.8% in the musculature. The majority (93%) of the larvae in the musculature oc-curred in the hypaxial sections anterior to the anus. As A. simplex larvae commonly occur in the musculature of wild Atlantic salmon, consumption of unfrozen, raw or semi- raw musculature represents a risk for humans developing anisakiasis.KEYWORDSAnisakidae, distribution, musculature, RVS, Salmosalar, viscera publishedVersion |
format |
Article in Journal/Newspaper |
author |
Mo, Tor Atle Fossøy, Frode Poppe, Trygve T |
author_facet |
Mo, Tor Atle Fossøy, Frode Poppe, Trygve T |
author_sort |
Mo, Tor Atle |
title |
Increasing intensities of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae with weight and sea age in returning adult Atlantic salmon, Salmo salar L., of coastal waters of Norway |
title_short |
Increasing intensities of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae with weight and sea age in returning adult Atlantic salmon, Salmo salar L., of coastal waters of Norway |
title_full |
Increasing intensities of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae with weight and sea age in returning adult Atlantic salmon, Salmo salar L., of coastal waters of Norway |
title_fullStr |
Increasing intensities of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae with weight and sea age in returning adult Atlantic salmon, Salmo salar L., of coastal waters of Norway |
title_full_unstemmed |
Increasing intensities of Anisakis simplex (Rudolphi, 1809 det. Krabbe, 1878) larvae with weight and sea age in returning adult Atlantic salmon, Salmo salar L., of coastal waters of Norway |
title_sort |
increasing intensities of anisakis simplex (rudolphi, 1809 det. krabbe, 1878) larvae with weight and sea age in returning adult atlantic salmon, salmo salar l., of coastal waters of norway |
publishDate |
2021 |
url |
https://hdl.handle.net/11250/3041252 https://doi.org/10.1111/jfd.13369 |
op_coverage |
Namsen fjord, river Namsen, mid-Norway, Atlantic Ocean |
geographic |
Norway |
geographic_facet |
Norway |
genre |
Atlantic salmon Salmo salar |
genre_facet |
Atlantic salmon Salmo salar |
op_source |
1075-1089 44 Journal of Fish Diseases |
op_relation |
Journal of Fish Diseases. 2021, 1-15. urn:issn:0140-7775 https://hdl.handle.net/11250/3041252 https://doi.org/10.1111/jfd.13369 cristin:1903162 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2021 The Authors |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1111/jfd.13369 |
container_title |
Journal of Fish Diseases |
container_volume |
44 |
container_issue |
8 |
container_start_page |
1075 |
op_container_end_page |
1089 |
_version_ |
1766360413682794496 |