Lindy Whitehouse. The effect of thermal stress on fish development: a mini-review

Posted on: Dec 21, 2024, 21:49:23

Description: Projected temperature increases are predicted to significantly affect fish populations globally, impacting fish recruitment processes and altering population distribution. Fish embryos are perhaps at the most risk from temperature changes due to their sessile nature and overall sensitivity to temperature changes which could impact how well a fish population performs in a changing world. Research has shown that temperature can alter developmental trajectories, induce damage and abnormalities, increase development, and early hatching, and reduce survival. Other studies have shown that exposure to thermal stress can prime stress responses and result in changes in metabolic enzyme activity that persists post-hatch. Moreover, exposure to fluctuating temperature, which most closely mimics natural environments, can have a protective effect, increasing thermotolerance and survival while appearing to have no impact on developmental processes or hatching rate. Understanding how these early life stages respond to thermal stress and fluctuations is important for predicting how fish populations will respond to climate change.

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