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Effects of electromagnetic fields from an alternating current power cable on the embryogenesis of three benthic associated marine species
Paoletti, S.; Brabant, R.; Strammer, I.; Sigray, P.; Rolleberg, N.; Stewart, B.G.; Aerts, J.; Degraer, S.; Hutchison, Z.L.; Gill, A. (2026). Effects of electromagnetic fields from an alternating current power cable on the embryogenesis of three benthic associated marine species. Mar. Environ. Res. 213: 107727. https://dx.doi.org/10.1016/j.marenvres.2025.107727
In: Marine Environmental Research. Applied Science Publishers: Barking. ISSN 0141-1136; e-ISSN 1879-0291, meer
Peer reviewed article  
Beschikbaar in  Auteurs 
Author keywords
    EMFs; Subsea power cables; Embryogenesis; Behaviour; Offshore wind farms; Elasmobranch; Cephalopod
Auteurs  Top 
  • Paoletti, S., meer
  • Brabant, R., meer
  • Strammer, I., meer
  • Sigray, P.
  • Rolleberg, N.
  • Stewart, B.G.
  • Aerts, J., meer
  • Degraer, S., meer
  • Hutchison, Z.L.
  • Gill, A.
Abstract
    The global expansion in offshore renewable energy, primarily through offshore wind, is associated with the proliferation of subsea power cables (SPCs) throughout marine and coastal benthic environments. The transmission of electrical power through these SPCs will introduce electromagnetic fields (EMFs) into the seabed and the adjacent water column, which raises questions regarding the potential impact on benthic fauna, particularly during critical developmental early-life stages for which research considering the effects of both the electric and magnetic components of SPC EMFs is lacking. We conducted an experiment on three benthic egg-laying species, – the elasmobranch Scyliorhinus canicula, the cephalopod Loligo vulgaris, and the cephalopod Sepia officinalis – found in areas under consideration for the routing of SPCs. We exposed the embryos to realistic EMF levels (magnetic field 4–6 μT) recreated in the laboratory using an AC power cable set-up that simulated the EMF conditions, and examined the morphological, physiological, and behavioural responses. Our findings indicate subtle responses to EMF exposure in S. canicula and L. vulgaris with faster growth rates and morphometric differences, but no responses in S. officinalis. Our results highlight the value of a multiple end point approach to determine the potential influence of chronic exposure to EMFs on embryogenesis in benthic fauna and provide a baseline for future studies to build upon. Although our study cannot extrapolate the consequences of individual-level effects to population-level impacts, it does underscore the necessity of realistic and longer-term studies to assess the potential consequences of EMFs to marine fauna
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