Spawning aggregation of bigeye trevally, Caranx sexfasciatus, highlights the ecological importance of oil and gas platforms

Alethea S. Madgett* (Corresponding Author), Euan S. Harvey, Damon Driessen, Karl D. Schramm, Laura A.F. Fullwood, Se Songploy, Jes Kettratad, Paweena Sitaworawet, Sarin Chaiyakul, Travis S. Elsdon, Michael J. Marnane

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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There is growing interest in understanding the ecological benefits of oil and gas structures. This is the first reported case of the spawning aggregation and mating behaviour of bigeye trevally, Caranx sexfasciatus, associated with an oil and gas platform; demonstrating that oil and gas jackets are capable of not only attracting large aggregations of fish, but can provide suitable conditions for reproductive purposes. Fish spawning aggregations (FSAs) are highly vulnerable events that are vitally important for the persistence of many fish species. Urgent protection and conservation of FSA sites is required to secure them from the threat of overfishing. The findings of this study bring into question the management strategies required for oil and gas structures, particularly related to removal during decommissioning, or where structures are left in place and safety exclusion zones no longer apply. These aggregations and behaviours were captured using underwater stereo-video Remotely Operated Vehicle (ROV) methods, allowing for detailed observations.
Original languageEnglish
Article number108024
Number of pages6
JournalEstuarine, Coastal and Shelf Science
Early online date26 Aug 2022
Publication statusPublished - 5 Oct 2022

Bibliographical note

Open Access via the Elsevier Agreement

We gratefully acknowledge the field and logistical support provided by the Crew of the Resolution. This research project was funded by Chevron through its Anchor Partnership with the UK National Decommissioning Centre. We also acknowledge in-kind support from Net Zero Technology Centre and the University of Aberdeen through their partnership in the UK National Decommissioning Centre.


  • Decommissioning
  • Bigeye trevally
  • Fish spawning aggregations
  • Gulf of Thailand (GoT)
  • Marine conservation
  • Oil and gas platform jackets
  • Offshore platform ecology
  • Environmental management
  • Stereo-video


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