Climate change poses risks to aquaculture, threatening food security GlobalWarming Aquaculture ViralDisease FoodSecurity SustainableAquaculture OneHealth ClimateChange Fisheries Seafood AnimalHealth Micro_MDPI umontpellier PlymUni
By Dr. Sanchari Sinha Dutta, Ph.D.Apr 19 2023Reviewed by Danielle Ellis, B.Sc. In a study published in the journal Microorganisms, scientists have depicted the effect of global warming on viral infection-related mortality in farmed aquatic animals. The meta-analysis conducted in the study reveals an association between increasing temperature and increasing viral pathogenicity.
Aquaculture is one of the fast-growing food production sectors in the world. As a result, it plays a substantial role in global food security. However, the rapid emergence and transmission of infectious diseases among animals due to global warming have become a major problem restricting the sustainable development of aquaculture.
Linear regression models were developed to investigate the effect of temperature on the mortality of farmed aquatic animals due to infection by each of these pathogens. Fixed effects included in the models were temperature, life stage, type of infection, and infection dose. The findings revealed that induction in water temperature leads to higher mortality rates in CyHV-3-infected carps, OsHV-1-infected oysters, and Betanodavirus-infected fish.
Considering three types of infections together, the models predicted that an overall increase in water temperature of 1 °C is associated with 3.07–5.70% induction in mortality rates among infected aquatic animals.
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