No one organization can achieve tuna fishery sustainability on its own; we must work collectively with those that share our goals and wish to work together to achieve them. ISSF convenes a diverse group of stakeholdersNGOs, vessel owners, retailers, tuna processors and more — to make recommendations to Regional Fisheries Management Organizations (RFMOs). Here are some of the most recent advocacy letters that have resulted from that collaborative work.

ISSF 2018-20: Compendium of at-Sea Bycatch Mitigation Research Activities as of September 2018*

Date Added: October 4, 2018
Downloaded: 453 times
Tags: Acoustic Discrimination, Bigeye Tuna, Biodegradable FADs, Bycatch, Bycatch Mitigation, Dagorn, Hutchinson, Itano, Moreno, Purse Seine, Rays, Restrepo, science, Sea Turtles, Sharks
Authors: Dagorn, Forget, Hutchinson, Itano, Moreno, Restrepo, Sancristobal, Schaefer
Language: English
Author(s): V. Restrepo, L. Dagorn, G. Moreno, F. Forget, K. Schaefer, I. Sancristobal, J. Muir, D. Itano, M. Hutchinson
report_type: Technical Report


ISSF conducts at-sea research to investigate potential mitigation measures for tropical tuna purse seiners, especially to reduce catches of bigeye tuna and sharks. Research activities can be classified in one of four hierarchical stages along a fishing trip: 1) Passive mitigation, 2) Avoid catching bycatch, 3) Release bycatch from the net, and 4) Release bycatch from the deck.

This Technical Report summarizes all of the at-sea research that ISSF has conducted through September 2018, in chronological order. Most of the research has been done onboard tuna purse-seine fishing vessels, but other vessel types have been used.

For each research activity, a table that summarizes the objectives, methods, results and conclusions is presented. Following each research activity, there is a list of publications (peer reviewed as well as other literature) derived from that activity.

The Conclusions section at the end of this report highlights some of the main findings of these research activities, with a focus on sharks, bigeye tuna, and turtles.

This report is an update of ISSF 2016-13A, which covered research activities through December 2016.