Gene expression patterns in Atlantic salmon (<i>Salmo salar</i>) with severe nephrocalcinosis

Klykken, Christine; Boissonnot, Lauris; Reed, Anne Katrine; Whatmore, Paul; Attramadal, Kari J.K.; Olsen, Rolf Erik

doi:10.1111/jfd.13687

Cited by 5 publications

(1 citation statement)

References 48 publications

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“…Disease influences on salmon welfare vary widely, necessitating region-specific approaches to disease management. In Norway, haemorrhagic smolt syndrome (Krasnov et al 2020, Gasnes et al 2021, salmon gill poxvirus (Tartor et al 2022), pancreas disease, nephrocalcinosis (Gasnes et al 2021, Klykken et al 2022a, Klykken et al 2022b, and Moritella viscosa (Ramberg et al 2022, Tingbo et al 2024) are well-studied. In Chile, Piscirickettsia salmonis is of the most concern and Canadian studies have addressed how Piscine orthoreovirus affects the cardiorespiratory capabilities of Atlantic salmon.…”

Section: Health Issuesmentioning

confidence: 99%

A Review of Factors Affecting Farmed Atlantic Salmon (Salmo salar) Welfare in Australia and Beyond

Layman,

Kadar,

Lyall

et al. 2024

Preprint

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With the increasingly global scale and scope of aquaculture, the need to match this development with improvements in fish welfare is a central societal and industry goal. We provide a comprehensive assessment of the farmed Atlantic salmon (Salmo salar) literature with targeted examples focusing on Atlantic salmon farmed in Tasmania, Australia. We synthesise insights from both small- and industry-scale perspectives, highlighting other reviews that provide discussions of particular sub-areas of farmed salmon research. We focus on recent advances and improved methods for farmed Atlantic salmon handling and management, behaviour, health issues and breeding. We also address wildlife interactions resulting from fish farming, as well as future research directions and system development. This review can serve as the basis for the development of aquaculture management guidelines that place individual fish welfare as a primary goal.

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Section: Health Issuesmentioning

confidence: 99%

A Review of Factors Affecting Farmed Atlantic Salmon (Salmo salar) Welfare in Australia and Beyond

Layman,

Kadar,

Lyall

et al. 2024

Preprint

View full text Add to dashboard Cite

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Gene expression patterns in Atlantic salmon (Salmo salar) with severe nephrocalcinosis

Klykken

Boissonnot²,

Reed

et al. 2022

Journal of Fish Diseases

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Nephrocalcinosis is a common disorder in farmed Atlantic salmon, but the consequences for the fish physiology are not well understood. We performed a transcriptome study in kidneys of Atlantic salmon (Salmo salar) smolts without and with severe chronic nephrocalcinosis (NC). The study revealed that numerous genes are differentially expressed in fish with NC compared with healthy salmon. The most evident changes in gene expression patterns in the NC group were a massive downregulation of metabolism and energy production, upregulation of signalling pathways important for tissue repair and function maintenance and upregulation of inflammatory responses. Overall, the extensive tissue damage and the gene regulation responses that affect salmon with severe nephrocalcinosis are highly likely to have dramatic consequences on fish survival.

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Ultrastructure of disc found in the chorion of Atlantic salmon (Salmo salar) embryos

Pérez-Atehortúa,

Sandoval-Vargas,

Risopatrón

et al. 2024

Preprint

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The chorion is an acellular envelope that surrounds fish oocytes and embryos, playing a crucial role in protection against environmental factors until hatching. In salmonids, several chorion malformations have been documented, including white-spotted (disc-like) chorion. This study focused on investigating the ultrastructural modifications of the chorion with discs and their possible influence on embryonic viability in Atlantic salmon. A total of 136 females were included in the study. The incidence of disc chorion was evaluated at 130 °h and in pigmented eye embryos at 280 ATU (accumulated thermal units). Scanning electron microscopy (SEM) was used for this ultrastructural characterization. The results revealed that 3.17% of females had embryos with discs in the chorion at 130 °h, with a mean of 1.21 ± 7.24% of affected embryos per female. At 280 ATU, 15% of the females had embryos with discs in the chorion, with a mean of 0.45 ± 2.17% per female. Females with this malformation were observed to have a slightly higher fertilization rate (75 ± 21.21%) compared to females without this malformation (74.2 ± 23.7%). Embryonic survival at 280 ATU for both groups was 70.1 ± 20.6% and 71.6 ± 21.0%, respectively. Although a clear origin for the chorion with disc malformation is not known, the possibility is raised that it may be due to pathological conditions specific to the female and that it probably occurs in a similar way to nephrocalcinosis, by bioaccumulation of elements in the chorion during its synthesis. Further studies are needed to better understand this malformation to help refine economic projections in salmon farms dedicated to embryo production.

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Gene expression patterns in Atlantic salmon (Salmo salar) with severe nephrocalcinosis

Cited by 5 publications

References 48 publications

A Review of Factors Affecting Farmed Atlantic Salmon (Salmo salar) Welfare in Australia and Beyond

A Review of Factors Affecting Farmed Atlantic Salmon (Salmo salar) Welfare in Australia and Beyond

Gene expression patterns in Atlantic salmon (Salmo salar) with severe nephrocalcinosis

Ultrastructure of disc found in the chorion of Atlantic salmon (Salmo salar) embryos

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