Abstract

Overview

Controlled source electromagnetics (CSEM) uses electromagnetic fields (EMF) to detect oil reservoirs. Atlantic haddock, a commercially important species, may be affected by these activities due to overlap with egg distribution.

Findings

• Haddock eggs were exposed to varying EMF intensities in a lab setting replicating CSEM conditions.
• The experiment included exposures lasting for 15 min, and a worst-case scenario of 1 hour at the highest EMF level.
• No malformations, mortality, or impacts on hatching were observed in any treatment groups.
• Significant findings included tachycardia in newly hatched larvae and a reduction in yolk sac size, predominantly at the lowest EMF intensity.

Conclusion

The study provides insights into potential environmental impacts of EMF exposure from oil and gas explorations on Atlantic haddock, particularly affecting larval stages without causing mortality or malformation.