Comparing Body Density of Lumpfish ( Cyclopterus lumpus ) to Different Operational Welfare Indicators
Farmed lumpfish ( Cyclopterus lumpus ) are commonly used as cleaner fish in the salmonid aquaculture industry, but a knowledge gap exists with regards to their body density. Filling this knowledge gap is of importance, as the lumpfish has no swim bladder and thus relies on alternative methods for bu...
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ftdoajarticles:oai:doaj.org/article:6b7dfd3be38d4689bb1a41f9845b46de 2023-05-15T16:10:55+02:00 Comparing Body Density of Lumpfish ( Cyclopterus lumpus ) to Different Operational Welfare Indicators Albert Kjartan Dagbjartarson Imsland Magnus Sunason Berg Gyri Teien Haugland Kirstin Eliasen 2022-10-01T00:00:00Z https://doi.org/10.3390/fishes7050284 https://doaj.org/article/6b7dfd3be38d4689bb1a41f9845b46de EN eng MDPI AG https://www.mdpi.com/2410-3888/7/5/284 https://doaj.org/toc/2410-3888 doi:10.3390/fishes7050284 2410-3888 https://doaj.org/article/6b7dfd3be38d4689bb1a41f9845b46de Fishes, Vol 7, Iss 284, p 284 (2022) aquaculture buoyancy body density lumpfish operational welfare indicators Biology (General) QH301-705.5 Genetics QH426-470 article 2022 ftdoajarticles https://doi.org/10.3390/fishes7050284 2022-12-30T23:07:10Z Farmed lumpfish ( Cyclopterus lumpus ) are commonly used as cleaner fish in the salmonid aquaculture industry, but a knowledge gap exists with regards to their body density. Filling this knowledge gap is of importance, as the lumpfish has no swim bladder and thus relies on alternative methods for buoyancy, i.e., the body density difference between the fish and its surroundings. The aims of this study were to measure the body density of lumpfish and investigate the correlation between body density and different operational welfare indicators. A total of 138 lumpfish were sampled at five different aquaculture sites situated in the Faroe Islands. Weight in water and air was measured, body density was calculated, and operational welfare was assessed. The average body density of the juvenile lumpfish was 1.030 g mL −1 . Fulton’s K, stomach score, and length were negatively correlated to body density, while the hepatosomatic index was positively correlated to body density. Liver colour was correlated to body density, but the groupings were too broad for a final definitive conclusion. The knowledge gained from this study might help the industry improve their understanding of the operational welfare indicators used for lumpfish. Additionally, the knowledge might also help the aquaculture industry improve their husbandry and feeding practices. Article in Journal/Newspaper Faroe Islands Directory of Open Access Journals: DOAJ Articles Faroe Islands Fishes 7 5 284 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
aquaculture buoyancy body density lumpfish operational welfare indicators Biology (General) QH301-705.5 Genetics QH426-470 |
spellingShingle |
aquaculture buoyancy body density lumpfish operational welfare indicators Biology (General) QH301-705.5 Genetics QH426-470 Albert Kjartan Dagbjartarson Imsland Magnus Sunason Berg Gyri Teien Haugland Kirstin Eliasen Comparing Body Density of Lumpfish ( Cyclopterus lumpus ) to Different Operational Welfare Indicators |
topic_facet |
aquaculture buoyancy body density lumpfish operational welfare indicators Biology (General) QH301-705.5 Genetics QH426-470 |
description |
Farmed lumpfish ( Cyclopterus lumpus ) are commonly used as cleaner fish in the salmonid aquaculture industry, but a knowledge gap exists with regards to their body density. Filling this knowledge gap is of importance, as the lumpfish has no swim bladder and thus relies on alternative methods for buoyancy, i.e., the body density difference between the fish and its surroundings. The aims of this study were to measure the body density of lumpfish and investigate the correlation between body density and different operational welfare indicators. A total of 138 lumpfish were sampled at five different aquaculture sites situated in the Faroe Islands. Weight in water and air was measured, body density was calculated, and operational welfare was assessed. The average body density of the juvenile lumpfish was 1.030 g mL −1 . Fulton’s K, stomach score, and length were negatively correlated to body density, while the hepatosomatic index was positively correlated to body density. Liver colour was correlated to body density, but the groupings were too broad for a final definitive conclusion. The knowledge gained from this study might help the industry improve their understanding of the operational welfare indicators used for lumpfish. Additionally, the knowledge might also help the aquaculture industry improve their husbandry and feeding practices. |
format |
Article in Journal/Newspaper |
author |
Albert Kjartan Dagbjartarson Imsland Magnus Sunason Berg Gyri Teien Haugland Kirstin Eliasen |
author_facet |
Albert Kjartan Dagbjartarson Imsland Magnus Sunason Berg Gyri Teien Haugland Kirstin Eliasen |
author_sort |
Albert Kjartan Dagbjartarson Imsland |
title |
Comparing Body Density of Lumpfish ( Cyclopterus lumpus ) to Different Operational Welfare Indicators |
title_short |
Comparing Body Density of Lumpfish ( Cyclopterus lumpus ) to Different Operational Welfare Indicators |
title_full |
Comparing Body Density of Lumpfish ( Cyclopterus lumpus ) to Different Operational Welfare Indicators |
title_fullStr |
Comparing Body Density of Lumpfish ( Cyclopterus lumpus ) to Different Operational Welfare Indicators |
title_full_unstemmed |
Comparing Body Density of Lumpfish ( Cyclopterus lumpus ) to Different Operational Welfare Indicators |
title_sort |
comparing body density of lumpfish ( cyclopterus lumpus ) to different operational welfare indicators |
publisher |
MDPI AG |
publishDate |
2022 |
url |
https://doi.org/10.3390/fishes7050284 https://doaj.org/article/6b7dfd3be38d4689bb1a41f9845b46de |
geographic |
Faroe Islands |
geographic_facet |
Faroe Islands |
genre |
Faroe Islands |
genre_facet |
Faroe Islands |
op_source |
Fishes, Vol 7, Iss 284, p 284 (2022) |
op_relation |
https://www.mdpi.com/2410-3888/7/5/284 https://doaj.org/toc/2410-3888 doi:10.3390/fishes7050284 2410-3888 https://doaj.org/article/6b7dfd3be38d4689bb1a41f9845b46de |
op_doi |
https://doi.org/10.3390/fishes7050284 |
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Fishes |
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7 |
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5 |
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284 |
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1765996047624044544 |