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Oceans and fisheries
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Innovative solutions saving sharks

New technologies aim to reduce shark bycatch in longline fishing, enhancing survival rates of accidentally caught sharks. 

Shark longline catch
© Institut de Recherche pour le Développement (IRD)

Longline fishing, vital for small-scale fishers targeting tuna and billfish, often results in accidental shark bycatch, threatening vulnerable shark populations. In La Reunion, a project was developed to address this by assessing shark survival after accidental capture and testing methods to reduce mortality. In three phases, researchers tagged and released sharks, identifying that cutting branch lines closer to the hook significantly improved survival. A prototype automatic branch line cutter was also developed to minimize risks for both sharks and fishers. The project raised awareness among fishers, promoting sustainable practices and advancing shark conservation efforts.

Results

  • Raised awareness among fishers on minimizing stress on accidentally caught sharks.
  • Created a prototype for cutting branch lines closer to hooks, improving shark survival and reducing crew injury risk.
  • Contributed to reducing the environmental impact of fishing operations.
  • Improved working conditions aboard small-scale long-line fishing vessels.

Contact

Pascal BACH

Name
Pascal BACH
Organisation
Institut de Recherche pour le Développement (IRD)
Email
pascal [dot] bachatird [dot] fr
Phone number
+33 4 99 57 61 29