Article
Virology
Jessica Benkaroun, Katherine Fiona Muir, Rosa Allshire, Cuneyt Tamer, Manfred Weidmann
Summary: The aquatic virus, IPNV, infects farmed fish such as salmonids and causes economic losses. To investigate a serotyping discrepancy, the complete genome of new IPNV isolates was determined using next-generation sequencing. Phylogenetic analyses revealed the emergence of a new variant possibly due to selective pressure from vaccinated IPNV-resistant farmed fish.
Article
Fisheries
Sebastian Wacker, Geir H. Bolstad, Ola H. Diserud, Kjetil Hindar, Sten Karlsson
Summary: Farm-raised Atlantic salmon escape and mate with wild ones, introducing non-native mitochondrial haplotypes to the wild population. This genetic introgression can cause long-lasting functional maladaptation in the hybrids due to the important role of mitochondrial genome and maternal inheritance. The widespread use of farm-raised salmon from non-native groups in aquaculture poses greater ecological risks to wild salmon than previously recognized.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2023)
Article
Fisheries
Sebastian Wacker, Geir H. Bolstad, Ola H. Diserud, Kjetil Hindar, Sten Karlsson
Summary: Farmed Atlantic salmon escape and hybridize with wild Atlantic salmon, introducing non-native haplotypes into the wild population. This genetic introgression can cause functional maladaptation in the hybrids, particularly in the mitochondrial genome inherited from the mother. As the use of farmed salmon from different phylogenetic groups is widespread in aquaculture, the impact on wild salmon may be more severe than previously recognized. This study highlights the ecological risks of releasing non-native domesticated animals into the wild.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2023)
Article
Immunology
Carlos Munoz, Josue Gonzalez-Lorca, Mick Parra, Sarita Soto, Natalia Valdes, Ana Maria Sandino, Rodrigo Vargas, Alex Gonzalez, Mario Tello
Summary: The study explored the use of Lactococcus lactis as a type I interferon expression system in Atlantic salmon to stimulate the antiviral immune response, showing that oral administration of L. lactis producing interferon I induces systemic effects, reduces IPNV viral load, and increases Mx and PKR expression.
FRONTIERS IN IMMUNOLOGY
(2021)
Article
Biotechnology & Applied Microbiology
Carolina P. Moraleda, Diego Robledo, Alejandro P. Gutierrez, Jorge del-Pozo, Jose M. Yanez, Ross D. Houston
Summary: The resistance to SRS is a polygenic trait, and this study has identified relevant genes and pathways that are likely to play a role in mediating genetic resistance through genome-wide association analysis and RNA-sequencing.
Article
Engineering, Marine
Bibbi Maria Kallay Hjelle, Albert Kjartan Dagbjartarson Imsland, Pablo Vigo Balseiro, Sigurd Olav Handeland
Summary: The AcuLice system, which uses a composite acoustic sound image, has been shown to effectively reduce the number of salmon lice on Atlantic salmon without causing additional stress to the fish.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2022)
Article
Fisheries
Morten Omholt Alver, Martin Fore, Jo Arve Alfredsen
Summary: The research team developed a mathematical model based on the advection-diffusion equation to predict dissolved oxygen levels in fish sea cages. The model was tested in a large production unit and performed well, but may require more detailed information on fish behavior and current conditions within the cages to improve accuracy.
Article
Environmental Sciences
Jaewoon Jeong, Marit Stormoen, Krishna K. Thakur, Crawford W. Revie
Summary: Accurate monitoring of sea lice levels on salmon farms is crucial for efficient management of louse infestation. Increasing sample sizes, using appropriate treatment thresholds, and adjusting sampling intervals can improve the accuracy of abundance estimates and thus increase the frequency of effective treatments.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
O. Gervais, A. Barria, A. Papadopoulou, R. L. Gratacap, B. Hillestad, A. E. Tinch, S. A. M. Martin, D. Robledo, R. D. Houston
Summary: The study found that the heritability of ISAV resistance is moderate with a polygenic architecture, but a significant quantitative trait locus was detected on chromosome 13. A mild up-regulation of the interferon pathway characterizes the response to the virus in heart samples from this population of Atlantic salmon, and candidate genes showing differential expression between samples with high and low breeding values for resistance were identified.
Article
Fisheries
Omar Sickander, Ramon Filgueira
Summary: Aquaculture is a rapidly growing industry, and Integrated Multi-Trophic Aquaculture (IMTA) is a potential solution to minimize waste impact on ecosystems. However, there are challenges to implementing IMTA in Atlantic Salmon farms, such as scaling up extractive species and economic issues.
Article
Fisheries
Per Gunnar Fjelldal, Thomas W. K. Fraser, Tom J. Hansen, Orjan Karlsen, Samantha Bui
Summary: The elevated salmon louse infection pressure caused by salmon farming poses a major threat to wild Atlantic salmon. This study found that lice had a negative impact on the growth and survival of wild Atlantic salmon in seawater, but only affected the length growth in freshwater after the lice had detached. The parasites did not affect the size of the fish's reproductive organs.
ICES JOURNAL OF MARINE SCIENCE
(2022)
Article
Biotechnology & Applied Microbiology
Ophelie Gervais, Carolina Penaloza, Remi Gratacap, Athina Papadopoulou, Mariana Beltran, Neil C. Henderson, Ross D. Houston, Musa A. Hassan, Diego Robledo
Summary: In this study, single-cell RNA sequencing was used to provide a high-dimensional insight into the transcriptional landscape of Atlantic salmon cells during early Infectious Salmon Anaemia Virus (ISAV) infection. The results showed a clear anti-viral response in infected cells, characterized by the upregulation of IFNA2 or IRF2. Additionally, uninfected bystander cells exhibited transcriptional differences, suggesting paracrine signaling from infected cells. This study identified potential key genes involved in the host-virus interaction, which can be targeted in future functional studies to enhance the resistance of Atlantic salmon to ISAV.
Article
Fisheries
Ingrid A. Johnsen, Alison Harvey, Pal Naeverlid Saevik, Anne D. Sandvik, Ola Ugedal, Bjorn Adlandsvik, Vidar Wennevik, Kevin A. Glover, Orjan Karlsen
Summary: This study focused on the environmental challenges of salmonid aquaculture, estimating the impact of salmon lice on wild salmon mortality in Norwegian waters using models and data analysis. Results showed that aquaculture-produced salmon lice led to varying mortality rates of wild salmon post-smolts in different rivers.
ICES JOURNAL OF MARINE SCIENCE
(2021)
Article
Environmental Sciences
Marlene Lorgen-Ritchie, Michael Clarkson, Lynn Chalmers, John F. Taylor, Herve Migaud, Samuel A. M. Martin
Summary: This study analyzed temporal changes in the microbiome associated with the intestine in Atlantic salmon during smolt production, finding a sharp decline in microbial diversity 1-week post-seawater transfer (SWT) followed by re-establishment with a different community structure after 4 weeks. Core microbial taxa were classified into three categories: omnipresent, salinity specific, and transient. Additionally, an increase in microbial richness in the water was observed, possibly due to a temporal increase in organic load, while dominance of Vibrionaceae was attributed to higher temperatures during RAS production.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Agricultural Economics & Policy
Andreea L. Cojocaru, Audun Iversen, Ragnar Tveteras
Summary: The farmed salmon value chain has undergone significant changes and rapid production growth, but differentiation in farmed salmon remains limited compared to meat production, indicating an immature industry.
AQUACULTURE ECONOMICS & MANAGEMENT
(2021)
Article
Fisheries
J. K. Downes, T. Yatabe, M. Marcos-Lopez, H. D. Rodger, E. MacCarthy, I. O'Connor, E. Collins, N. M. Ruane
JOURNAL OF FISH DISEASES
(2018)
Article
Multidisciplinary Sciences
Michael D. Gallagher, Iveta Matejusova, Lien Nguyen, Neil M. Ruane, Knut Falk, Daniel J. Macqueen
SCIENTIFIC REPORTS
(2018)
Article
Fisheries
Niccolo Vendramin, Argelia Cuenca, Juliane Sorensen, Anna L. F. Alencar, Debes H. Christiansen, Jan A. Jacobsen, Charlotte Axen, Francois Lieffrig, Neil M. Ruane, Patrick Martin, Timothy Sheehan, Tine M. Iburg, Espen Rimstad, Niels J. Olesen
JOURNAL OF FISH DISEASES
(2019)
Article
Fisheries
Andrew J. Tighe, Jens Carlsson, Teresa Morrissey, Fiona Swords, Neil M. Ruane
JOURNAL OF FISH DISEASES
(2019)
Article
Fisheries
Chloe J. English, Fiona Swords, Jamie K. Downes, Neil M. Ruane, Natasha A. Botwright, Richard S. Taylor, Andrew C. Barnes, James W. Wynne, Paula C. Lima, Mathew T. Cook
AQUACULTURE ENVIRONMENT INTERACTIONS
(2019)
Article
Fisheries
Haakon Hansen, Natasha A. Botwright, Mathew T. Cook, Alex Douglas, Jamie Downes, Michael D. Gallagher, Neil M. Ruane, Iveta Matejusova
DISEASES OF AQUATIC ORGANISMS
(2019)
Article
Fisheries
Michael D. Gallagher, Iveta Matejusova, Neil M. Ruane, Daniel J. Macqueen
Article
Veterinary Sciences
Tadaishi Yatabe, Beatriz Martinez-Lopez, Jose Manuel Diaz-Cao, Fiona Geoghegan, Neil M. Ruane, Teresa Morrissey, Catherine McManus, Ashley E. Hill, Simon J. More
FRONTIERS IN VETERINARY SCIENCE
(2020)
Article
Fisheries
Andrew J. Tighe, Michael D. Gallagher, Jens Carlsson, Iveta Matejusova, Fiona Swords, Daniel J. Macqueen, Neil M. Ruane
DISEASES OF AQUATIC ORGANISMS
(2020)
Article
Fisheries
Tom Mc Dermott, Jack D'Arcy, Suzanne Kelly, Jamie K. Downes, Bogna Griffin, Robert F. Kerr, Damien O'Keeffe, Micheal O'Ceallachain, Louise Lenighan, Felix Scholz, Neil M. Ruane
Summary: Salmon infestations by the salmon louse and amoebic gill disease are major concerns in the Atlantic salmon aquaculture industry in Ireland. Researchers have found that using nano-filtered hyposaline water has proved to be an effective non-medicinal method to reduce parasite levels.
AQUACULTURE REPORTS
(2021)
Article
Multidisciplinary Sciences
Andrew J. Tighe, Sean Grayson, John Byrne, Sanni Hintikka, Lisa Jessen, Jake Dempsey, Lauren Browne, Mary Kelly-Quinn, Bernerd Fulanda, Neil M. Ruane, Jens Carlsson
Summary: This study reveals that Shigella bacteria are still a major cause of dysentery in sub-Saharan Africa, resulting in approximately 600,000 deaths annually. The study also highlights the potential role of wild-caught freshwater catfish as vectors for Shigella flexneri in Southern Kenya.
SCIENTIFIC REPORTS
(2022)
Article
Fisheries
Felix Scholz, Niccolo Vendramin, Niels Jorgen Olesen, Argelia Cuenca, Tine Moesgaard Iburg, Luca Mirimin, Ian O'Connor, Neil M. Ruane, Hamish D. Rodger, Eugene MacCarthy
Summary: This study aimed to investigate the virulence of European North Atlantic ranavirus (ENARV) isolates to lumpfish and salmon, as well as horizontal transmission and virus replication. The results showed that different isolates had different virulence to lumpfish, and horizontal transmission was observed, but no clinical impact was demonstrated in cohabitants. Furthermore, the study established guidelines for the diagnosis of ENARV infection and provided a basis for further investigations into virulence markers.
JOURNAL OF FISH DISEASES
(2022)
Article
Fisheries
Petra R. Quezada-Rodriguez, Richard S. Taylor, Jamie Downes, Fintan Egan, Samantha White, Aisling Brenan, Megan Rigby, Barbara F. Nowak, Neil M. Ruane, James W. Wynne
Summary: This study investigated the prevalence and intensity of epitheliocystis infection in two strains of Atlantic salmon reared in flow-through and recirculation aquaculture systems in Ireland. The results showed that the infection was present throughout the rearing period and the intensity was correlated with gill lesions. There was a significant interaction between hatchery system and fish strain on the prevalence and intensity of gill epitheliocystis.
JOURNAL OF FISH DISEASES
(2022)
Article
Biotechnology & Applied Microbiology
Andrew J. Tighe, Neil M. Ruane, Jens Carlsson
Summary: The Totiviridae virus family, originally believed to infect only fungi and protists, has been found in increasing numbers in invertebrates and fish since 2006. These viruses pose new threats to aquaculture, particularly to whiteleg shrimp and Atlantic salmon. Research suggests that fish toti-like viruses may have originated from arthropod hosts.
JOURNAL OF GENERAL VIROLOGY
(2022)
Article
Biotechnology & Applied Microbiology
Hannah E. B. Stagg, Sigridur Gudmundsdottir, Niccola Vendramin, Neil M. Ruane, Heida Sigurdardottir, Debes H. Christiansen, Argelia Cuenca, Petra E. Petersen, Eann S. Munro, Vsevolod L. Pobov, Kuttichantran Subramaniam, Kamonchai Imnoi, Thomas B. Waltzek, Niels Jorgen Olesen
JOURNAL OF GENERAL VIROLOGY
(2020)