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Indian Ocean Tuna Commission
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21st Working Party on Ecosystems and Bycatch (WPEB21)

Meeting: 
Working Party on Ecosystems and Bycatch (WPEB)
Meeting year: 
2025
Meeting session: 
21
Date: 
Tue, 09/09/2025 - 09:00 to Sat, 13/09/2025 - 17:00
Venue country/city: 
France, Sete
Location: 
Ifremer
Chairperson: 
Dr Mariana Tolotti
Vice-Chairperson: 
Mr Mohammed Koya and Dr Charlene da Silva
Summary: 

IMPORTANT: due to security requirements at the meeting venue in Sete, the Secretariat needs to be informed if you plan to attend the meeting in person - please contact us in advance. 

Deadlines: 
  • Meeting Participation Fund applications due 45 days before meeting starts (26 July 2025) 
  • Paper titles  are due 30 days before the meeting starts (10 August 2025)
  • Full papers are due 15 days before the meeting starts (25 August 2025)

(all submissions should be sent to [email protected])

IMPORTANT: due to security requirements at the meeting venue in Sete, the Secretariat needs to be informed if you plan to attend the meeting in person - please contact us in advance. 

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Please register for this meeting

Please note that participation in IOTC meetings requires pre-approval by the Commission. If you are not from a CPC or a pre-approved observer, please consult the Observers page for details on the application process.

Meeting information documents

Title File
Information Document

Documents

Datasets
Reference Title Available on File
IOTC-2025-WPEB21-DATA02 Annual amount of fish caught and retained 24/07/2025
IOTC-2025-WPEB21-DATA03 Geo-referenced catch and effort data - Sharks 24/07/2025
IOTC-2025-WPEB21-DATA04 Geo-referenced size-frequency data - Sharks 24/07/2025
IOTC-2025-WPEB21-DATA05 Sharks CPUE indices 31/07/2025
Information papers
Reference Title Available on File
IOTC-2025-WPEB21(AS)-INF01 Bycatch trend and its fate of the Spanish-owned tuna purse seiners fleet from the Atlantic and Indian oceans: impacts of the implementation of good practices 13/08/2025
IOTC-2025-WPEB21(AS)-INF02 Deep diving into shark catch and trade mismatches 13/08/2025
IOTC-2025-WPEB21(AS)-INF03 Revised mobulid handling guidelines 13/08/2025
IOTC-2025-WPEB21(AS)-INF05 Best Practices for the disentanglement of free-swimming small cetaceans 13/08/2025
IOTC-2025-WPEB21(AS)-INF06 Which processes structure global pelagic ecosystems and control their trophic functioning? Insights from the mechanistic model APECOSM 20/08/2025
IOTC-2025-WPEB21(AS)-INF07 Insights into bycatch reduction based on underwater observations of Yelkouan shearwater (Puffinus yelkouan) and Atlantic Puffin (Fratercula arctica) interactions with the French pelagic longline fishery in the Western Mediterranean 22/08/2025
Meeting documents
Reference Title Available on File
IOTC-2025-WPEB21(AS)-01a Draft Agenda of the 21st Working Party on Ecosystems and Bycatch: Assessment meeting 24/07/2025
IOTC-2025-WPEB21(AS)-01b Annotated agenda of the 21st Working Party on Ecosystems and Bycatch Assessment Meeting 13/08/2025
IOTC-2025-WPEB21(AS)-02 List of documents of the 21st Working Party on Ecosystems and Bycatch Assessment Meeting 13/08/2025
IOTC-2025-WPEB21(AS)-03 Outcomes of the 27th Session of the Scientific Committee 13/08/2025
IOTC-2025-WPEB21(AS)-04 Outcomes of the 29th Session of the Commission 13/08/2025
IOTC-2025-WPEB21(AS)-05 Review of Conservation and Management Measures relevant to ecosystems and bycatch 13/08/2025
IOTC-2025-WPEB21(AS)-06 Progress made on the recommendations and requests of WPEB20 and SC27 13/08/2025
IOTC-2025-WPEB21(AS)-07 Review of the statistical data and fishery trends for ecosystems and bycatch species 13/08/2025
IOTC-2025-WPEB21(AS)-08 Status of development and implementation of National Plans of Action for seabirds and sharks, and implementation of the FAO guidelines to reduce marine turtle mortality in fishing operations 13/08/2025
IOTC-2025-WPEB21(AS)-09 Revision of the WPEB Program of Work (2026–2030) 13/08/2025
IOTC-2025-WPEB21(AS)-11 Enhancing conservation and sustainable use of sharks and rays in Mozambique: The first NPAO-Shark of Mozambique 2025-2029 13/08/2025
IOTC-2025-WPEB21(AS)-12 Blue shark (Prionace glauca) bycatch in the tuna longline fishery in Sri Lanka 13/08/2025
IOTC-2025-WPEB21(AS)-13 Impacts of Industrial Longline Fisheries on Elasmobranch Species Captured in Kenya’s Exclusive Economic Zone 13/08/2025
IOTC-2025-WPEB21(AS)-14 Bycatch of Thai handline fishery in Western Indian Ocean 13/08/2025
IOTC-2025-WPEB21(AS)-15 Status of sharks in India’s artisanal fisheries with a focus on shark conservation in India 13/08/2025
IOTC-2025-WPEB21(AS)-17 An update for 2024-2025 on the development of IOTC BTH PRM Project 13/08/2025
IOTC-2025-WPEB21(AS)-18 Standardized CPUE of oceanic whitetip shark bycaught by the French Reunion-based pelagic longline fishery (2007-2024) 13/08/2025
IOTC-2025-WPEB21(AS)-19 Distribution of blue sharks and shortfin mako sharks across the IOTC/ICCAT tRFMO boundary 13/08/2025
IOTC-2025-WPEB21(AS)-20 Updated Insights into the Reproductive Biology of Blue Sharks (Prionace glauca) in the Western Indian Ocean Based on Longline Observer Data from 2010–2023 13/08/2025
IOTC-2025-WPEB21(AS)-21 Best practices, habitat and survival rate of elasmobranch caught by French tropical tuna purse seiners - BEHAVE project 13/08/2025
IOTC-2025-WPEB21(AS)-22 Comparison of catch rate and mortality of sharks by leader-type based on observer data in the Indian Ocean 13/08/2025
IOTC-2025-WPEB21(AS)-23 Post-release mortality of pelagic sharks caught by longliners – POREMO and ASUR projects 13/08/2025
IOTC-2025-WPEB21(AS)-24 Best practice criteria and principles for designing experimental fishing trials to investigate the effects of leader material on catch and mortality of sharks 13/08/2025
IOTC-2025-WPEB21(AS)-25 Resolution 2025-08 as an opportunity to step up science driven conservation and management measure at IOTC for both sharks that are directly targeted and sharks caught as a bycatch in tuna and multi-ispecies fisheries? 13/08/2025
IOTC-2025-WPEB21(AS)-26 Information about “Ring-shaped branchline (Meka-ring)" in pelagic longline fisheries and research plan 13/08/2025
IOTC-2025-WPEB21(AS)-27 Updated on CPUE standardization of blue shark (Prionace glauca) from Indonesian tuna longline fleets 2006-2024 13/08/2025
IOTC-2025-WPEB21(AS)-28 Catch estimates of blue shark (Prionace glauca) in the IOTC area 13/08/2025
IOTC-2025-WPEB21(AS)-29 Comparison of indices of abundance for blue shark (Prionace glauca) in the IOTC area 13/08/2025
IOTC-2025-WPEB21(AS)-30 Stock assessment of blue shark (Prionace glauca) in the IOTC area using SS3 13/08/2025
IOTC-2025-WPEB21(AS)-31 Abundance, visiting frequency, interactions, fishery connectivity and economics of exploitation of pelagic species by Réunion's artisanal fishery on anchored FADs (AFICHE): a research project implying tagging of dolphinfish, wahoo and tuna 13/08/2025
IOTC-2025-WPEB21(AS)-32 Mitigating the Ecological Impacts of Drifting Fish Aggregating Devices in Seychelles Waters – A Review of the FADWatch Programme 13/08/2025
IOTC-2025-WPEB21(AS)-33 Have Non-Entangling DFADs Reduced Ghost Fishing in the Indian Ocean? 13/08/2025
IOTC-2025-WPEB21(AS)-34 Review of the proposed form for the collection of data on ALDFG 13/08/2025
IOTC-2025-WPEB21(AS)-35 Incorporating bycatch release devices in guidelines for best bycatch handling and release practices in tropical tuna purse seiners 13/08/2025
IOTC-2025-WPEB21(AS)-36 Ecosystem Fisheries Overviews as Advisory Products: A Pilot Application in the Indian Ocean Monsoon Gyre Ecoregion 13/08/2025
IOTC-2025-WPEB21(AS)-37 Advancing Regional Ecosystem Fisheries Overview with Climate and Environmental Indicators to Enhance Fisheries Management Advice in the Indian Ocean Tuna Commission 13/08/2025
IOTC-2025-WPEB21(AS)-38 Hindcasting the food-web dynamics of the tropical Indian Ocean pelagic ecosystem over the last two decades 13/08/2025
IOTC-2025-WPEB21(AS)-40 Conservation of Whale Sharks (Rhincodon typus) Bycaught in IOTC: Review of Biology, Interactions with Purse Seine Fisheries and Best Practices on Handling and Release 13/08/2025
IOTC-2025-WPEB21(AS)-41 Consideration of sampling requirements and logistics for close-kin mark recapture and a reappraisal of potential for stock structure in Indian Ocean shortfin mako shark 13/08/2025
IOTC-2025-WPEB21(AS)-42 Evaluation of potential close-kin mark recapture sampling designs for Indian Ocean shortfin mako shark 13/08/2025
IOTC-2025-WPEB21(AS)-43 Co-Designing a Trial for reduction of cetacean bycatch: A Proposal for Collaborative Bycatch Mitigation Research 13/08/2025
IOTC-2025-WPEB21(AS)-44 A Regional Conservation Management Plan for Arabian Sea Humpback Whales: Summary, Status and Timeline 13/08/2025
IOTC-2025-WPEB21(AS)-45 Developing an IOTC multi-year Seabird Strategy 13/08/2025
IOTC-2025-WPEB21(AS)-46 Collaborative approaches to monitor and reduce sea turtle bycatch mortality in the French longline fisheries in the SWIO: latest data and insights 13/08/2025
IOTC-2025-WPEB21(AS)-47 Launching ACTIVE: strengthening collaborative efforts for sea turtle bycatch mitigation and conservation in the SWIO 13/08/2025
IOTC-2025-WPEB21(AS)-49 Influence of drifting FAD immersion time on bycatch rate in the tropical tuna purse seine fishery 20/08/2025
IOTC-2025-WPEB21(AS)-50 Insights from the Data of the Crew-Based Observer Program: Identifying Blue Corridors for Marine Turtles in Pakistan’s EEZ 25/08/2025

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