Skeletal deformities in wild and farmed cleaner fish species used in Atlantic salmon Salmo salar aquaculture

Overview
TitleSkeletal deformities in wild and farmed cleaner fish species used in Atlantic salmon Salmo salar aquaculture
AuthorsFjelldal PG, Madaro A, Hvas M, Stien LH, Oppedal F, Fraser TW
TypeJournal Article
Journal NameJournal of fish biology
VolumeN/A
IssueN/A
Year2020
Page(s)N/A
CitationFjelldal PG, Madaro A, Hvas M, Stien LH, Oppedal F, Fraser TW. Skeletal deformities in wild and farmed cleaner fish species used in Atlantic salmon Salmo salar aquaculture. Journal of fish biology. 2020 Apr 03.

Abstract

As a first attempt to assess bone health in cleaner fish production, wild and cultured ballan wrasse Labrus bergylta and lumpfish Cyclopterus lumpus were examined by radiology. In C. lumpus, wild fish (57%) had more vertebra deformities (≥1 deformed vertebrae) than cultured fish (2-16%). One wild C. lumpus had lordosis and another was missing the tail fin. In L. bergylta, wild fish (11%) had less vertebra deformities than cultured individuals (78-91%). Among the cultured L. bergylta, 17-53% of the fish had severe vertebra deformities (≥6 deformed vertebrae) with two predominate sites of location, one between vertebra 4 and 10 (S1) in the trunk, and one between 19 and 26 (S2) in the tail. Fusions dominated S1, while compressions dominated S2. Although wild L. bergylta had a low vertebra deformity level, 83% had calluses and 14% had fractures in haemal/neural spines and/or ribs. The site-specific appearance and pathology of fracture and callus in wild L. bergylta suggests these are induced by chronic mechanical stress, and a possible pathogenesis for fish hyperostosis is presented based on this notion. In conclusion, good bone health was documented in cultured C. lumpus, however, cultured L. bergylta suffered poor bone health. How this affects survival, growth, swimming abilities and welfare in cultured wrasse should be further investigated. This article is protected by copyright. All rights reserved.

Author Details
Additional information about authors:
Details
1Per Gunnar Fjelldal
2Angelico Madaro
3Malthe Hvas
4Lars Helge Stien
5Frode Oppedal
6Thomas Wk Fraser
Properties
Additional details for this publication include:
Property NameValue
Journal CountryEngland
Publication TypeJournal Article
Language Abbreng
LanguageEnglish
CopyrightThis article is protected by copyright. All rights reserved.
Elocation10.1111/jfb.14337
DOI10.1111/jfb.14337
Journal AbbreviationJ. Fish Biol.
Publication Date2020 Apr 03
eISSN1095-8649
ISSN1095-8649
Publication ModelPrint-Electronic
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PMID: PMID:32243571