Bycatch is the biggest threat to many dolphin species and populations worldwide. The La Plata dolphin or Franciscana - Toninha in particular is a species where bycatch is reaching unsustainable levels in some regions. To counteract this problem, we are actively involved alongside our partners and are working together on practical solutions.
A first promising approach is to attach empty PET bottles (filled with air) to fishing nets. These bottles produce a strong echo when the dolphins use their echolocation and approach the net.
The preliminary results of this approach are encouraging, although further testing is required to statistically confirm this positive trend. This simple and cost-effective solution to a serious problem could, if successful, represent an important step towards reducing bycatch. Furthermore, this method could also be applied in other regions of the world where there are similar challenges in dealing with other dolphin species.
Our partner GEMARS in Brazil has recognized that the success of such projects is only possible through close cooperation with the fishing community. Raising awareness among the local population of the urgency and effectiveness of such measures is therefore a central component of their work.
