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Related Experiment Video

Updated: Jul 27, 2025

Quantifying Fish Swimming Behavior in Response to Acute Exposure of Aqueous Copper Using Computer Assisted Video and Digital Image Analysis
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Temperature impacts Atlantic salmon's (

L Groves1, S K Whyte1, S L Purcell1

  • 1Hoplite Lab, Department of Pathology and Microbiology, Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, PEI, Canada.

Fish and Shellfish Immunology Reports
|June 9, 2023
PubMed
Summary
This summary is machine-generated.

Rising ocean temperatures impact Atlantic salmon immunity. This study found that both temperature and family genetics significantly influence infectious salmon anemia virus (ISAv) susceptibility and mortality in salmon.

Keywords:
Anti-viralISAvImmune responseSalmonTemperatureVaccination

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Area of Science:

  • Aquaculture
  • Fish Immunology
  • Climate Change Biology

Background:

  • Aquaculture faces significant economic losses due to fish diseases.
  • Infectious salmon anemia virus (ISAv) is a major concern for the salmon farming industry.
  • Rising ocean temperatures due to climate change may exacerbate disease impacts on fish health.

Purpose of the Study:

  • To investigate the impact of elevated water temperatures on Atlantic salmon susceptibility to ISAv.
  • To determine if Atlantic salmon family background influences resistance to ISAv.
  • To understand the interplay between temperature, genetics, and ISAv infection dynamics.

Main Methods:

  • Atlantic salmon from 20 families were exposed to ISAv at two temperatures (10°C and 20°C).
  • Infection was established via cohabitation with infected donor fish.
  • Mortality, ISAv load (qPCR), and antiviral gene expression were assessed.

Main Results:

  • Both temperature and family background significantly affected ISAv load, time to mortality, and overall mortality.
  • Higher acute mortality occurred at 20°C, while higher overall mortality was observed at 10°C.
  • Specific antiviral genes (mx1, il4/13a, il12rb2, trim25) were upregulated upon ISAv exposure, with temperature-dependent effects.

Conclusions:

  • Temperature and genetic factors are critical in determining Atlantic salmon's response to ISAv.
  • Findings can inform strategies for managing ISAv outbreaks and enhancing salmon immunity in changing climates.
  • Understanding these interactions is vital for mitigating disease risks in aquaculture.