Exposure to Electromagnetic Fields from Submarine Power Cables Can Trigger Strength-Dependent Behavioural and Physiological Responses in Edible Crab

Abstract

Overview

The study focusses on the behavioural and physiological impacts of Electromagnetic Field (EMF) exposure from submarine power cables on Cancer pagurus, commonly known as edible crab. The research primarily examines effects at varying EMF strengths, including 250 µT, 500 µT, and 1000 µT.

Findings

• At 250 µT, crabs showed limited physiological and behavioural changes.
• Exposure at 500 µT and 1000 µT significantly disrupted circadian rhythms of L-Lactate and D-Glucose and altered Total Haemocyte Count (THC).
• Higher EMF strengths led crabs to display a clear preference for EMF-exposed shelters and reduced roaming time.

Conclusion

The study highlights the strength-dependent response of crabs to EMF, suggesting a maximum exposure limit to 250 µT to avoid significant physiological and behavioural changes. Further research is encouraged to fully understand EMF sensitivity across various stages of life and environmental conditions within marine crustaceans.