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Indian Ocean Tuna Commission
Indian Ocean Tuna Commission
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27th Working Party on Tropical Tunas (WPTT27)

Meeting: 
Working Party on Tropical Tunas (WPTT)
Meeting year: 
2025
Meeting session: 
27
Date: 
Tue, 21/10/2025 - 09:00 to Sat, 25/10/2025 - 17:00
Venue country/city: 
Seychelles
Location: 
Laïla Resort, E. Coast Road, Anse Royale
Chairperson: 
Dr Gorka Merino
Vice-Chairperson: 
Dr Shiham Adam
Deadlines: 
  • Meeting Participation Fund applications due 45 days before meeting starts (6 September 2025)
  • Paper titles  are due 30 days before the meeting starts (21September 2025)
  • Full papers are due 15 days before the meeting starts (6 October 2025)

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

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Meeting information documents

Title File
Information Document

Documents

Datasets
Reference Title Available on File
IOTC-2025-WPTT27-DATA02_Rev2 Annual amount of fish caught and retained - IOTC species 22/10/2025
IOTC-2025-WPTT27-DATA03 Geo-referenced catch and effort data - All fisheries 10/10/2025
IOTC-2025-WPTT27-DATA04 Geo-referenced size-frequency data - Bigeye tuna (BET) 10/10/2025
IOTC-2025-WPTT27-DATA05 Geo-referenced size-frequency data - Skipjack tuna (SKJ) 10/10/2025
IOTC-2025-WPTT27-DATA06 Geo-referenced size-frequency data - Yellowfin tuna (YFT) 10/10/2025
IOTC-2025-WPTT27-DATA07 Inputs for stock assessment - Bigeye tuna (BET) 13/10/2025
IOTC-2025-WPTT27-DATA08 IOTC Conversion Factors and Morphometric Equations 13/10/2025
Information papers
Reference Title Available on File
IOTC-2025-WPTT27-INF01 Is my red the same as your red? Improving the communication of stock status and support for management in the Indian Ocean Tuna Commission with specific recommendations for Indian Ocean skipjack 24/09/2025
IOTC-2025-WPTT27-INF02 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 17/10/2025
IOTC-2025-WPTT27-INF03 Revision and adaptation of IOTC Data Collection Forms Related to FADs and abandoned, lost or discarded fishing gears (ADLFG) 21/10/2025
IOTC-2025-WPTT27-INF04 Maturity Ogives for South Pacific Albacore Tuna (Thunnus alalunga) That Account for Spatial and Seasonal Variation in the Distributions of Mature and Immature Fish 21/10/2025
Meeting documents
Reference Title Available on File
IOTC-2025-WPTT27-01a Agenda of the 27th Working Party on Tropical Tunas 13/08/2025
IOTC-2025-WPTT27-01b Annotated agenda of the 27th Working Party on Tropical Tunas 13/08/2025
IOTC-2025-WPTT27-02 List of documents for the 26th Working Party on Tropical Tunas 13/08/2025
IOTC-2025-WPTT27-03_Rev2 Update on the Statistics for Indian Ocean Tropical Tuna Fisheries, 1950-2024 21/10/2025
IOTC-2025-WPTT27-05 Revision of the WPTT program of work (IOTC Secretariat) 13/08/2025
IOTC-2025-WPTT27-06 Statistics on tropical tuna landings at Thai fishing ports 24/09/2025
IOTC-2025-WPTT27-07 Analysis of the yellowfin tuna, bigeye tuna and skipjack tuna caught in 2024 by the industrial tuna fishery in Kenya 24/09/2025
IOTC-2025-WPTT27-08 Comparative analysis of ERS Data on tropical tuna fisheries in Madagascar: longline and purse seine fleets, 2024–2025 24/09/2025
IOTC-2025-WPTT27-09 The status of tuna stocks with special reference to tropical tunas in Pakistan 24/09/2025
IOTC-2025-WPTT27-10rev1 Review of Indonesian tuna purse seine fisheries in Indian Ocean 24/09/2025
IOTC-2025-WPTT27-11 Assessing catch rate dynamics of yellowfin tuna in Sri Lanka’s longline fishery: linear and non-linear approches 24/09/2025
IOTC-2025-WPTT27-12 Length-based assessment and biological review of skipjack tuna in the Indian EEZ: Insights into stock status and trophic ecology 24/09/2025
IOTC-2025-WPTT27-13 Length-Based Assessment of Yellowfin Tuna (Thunnus albacares) in the Tanzania EEZ: Applying LBB and LB-SPR Methods for Data-Limited Fisheries Management 24/09/2025
IOTC-2025-WPTT27-15_rev2 Preliminary Indian Ocean bigeye tuna stock assessment 1950-2024 (stock synthesis) 10/10/2025
IOTC-2025-WPTT27-16 An update on consideration of exceptional circumstances for the bigeye tuna MP 2025 24/09/2025
IOTC-2025-WPTT27-17 Running the IOTC skipjack tuna management procedure for 2025 24/09/2025
IOTC-2025-WPTT27-18rev1 Update of joint CPUE indices for yellowfin tunas in the Indian Ocean based on Japanese, Korean and Taiwanese longline fisheries data (up to 2024) 20/10/2025
IOTC-2025-WPTT27-19 Conditioning of OMs and preliminary evaluation of MPs for Indian Ocean yellowfin 24/09/2025
IOTC-2025-WPTT27-20 Catch level projections and management benchmarks in the face of non-stationarity - an application to Indian Ocean yellowfin tuna 24/09/2025
IOTC-2025-WPTT27-21rev1 Analysis of the recoveries by sex of adult yellowfin and bigeye in the Indian Ocean 24/09/2025
IOTC-2025-WPTT27-22 A dFAD retrieval project: A case study on the utility of retrieval vessels 24/09/2025
IOTC-2025-WPTT27-23 Advances in the use of state-space assessment models for tuna stocks: application to the Indian Ocean bigeye tuna 25/09/2025
IOTC-2025-WPTT27-25 Spawning features of yellowfin and bigeye tuna in the Indian Ocean revealed by decadal Chinese longline observer data 29/09/2025
IOTC-2025-WPTT27-26 Status, Trends, and Biological Insights of Tropical Tuna Fisheries in Indian Waters 07/10/2025
IOTC-2025-WPTT27-27 Consideration of Exceptional Circumstances for the skipjack tuna Management Procedure adopted by the IOTC in 2023 13/10/2025
IOTC-2025-WPTT27-28 Preliminary evaluation of Seychelles longline length, catch and effort data: summary of findings 16/10/2025

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