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BYCATCH OF FRANCISCANA DOLPHINS AND SEA TURTLES IN ARTISANAL BOTTOM GILLNETS: ARE LED LIGHTS AN ADEQUATE MITIGATION MEASURE TO BE APPLIED IN ARGENTINA?

LOCATION: ARGENTINA

Victoria González Carman, PhD
Maria Paula Polizzi, PhD
Instituto Nacional De Investigación Y Desarrollo Pesquero (INIDEP) – Instituto De Investigaciones Marinas Y Costeras (UNMDP – CONICET)
Agustina Caride
Ximena Merelle D´Herve
Adrián Feldman
Ignacio Bruno
Maria Fernanda Zapata
AquaMarina

Randall Wells
Brookfield Zoo Chicago’s Sarasota Dolphin Research Program

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PROJECT SUMMARY

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AquaMarina

The interaction of fishing gear with non-target megafauna is of global concern. AquaMarina has a long history of bycatch mitigation, using acoustic devices and modifications of fishing gear. In this pilot project, AquaMarina aims to explore LED lights as a mitigation measure to reduce the bycatch of the franciscana dolphin (Pontoporia blainvillei) and three sea turtle species (Chelonia mydas, Caretta caretta, Dermochelys coriacea) in the artisanal gillnet fishery of northern Buenos Aires province (Argentina).

 

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AquaMarina

According to the International Union for the Conservation of Nature, the franciscana dolphin is listed as Vulnerable and the three sea turtle species are globally listed from Vulnerable to Endangered. During 2025 and 2026, field trials will be conducted in southern Bahia Samborombón to explore the effect of LED lights on: 1) the bycatch of dolphins and sea turtles, 2) fishing success, and 3) sea lion behavior. Trials will be conducted by fishers and AquaMarina’s personnel. Fishers’ perceptions on the efficiency and potential implementation of LED lights to reduce the bycatch will also be explored through semi-structured interviews.

 

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In the framework of the “School of the Sea”, educational and outreach activities will be performed to increase awareness of the conservation status of these species.

 

AquaMarina