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Indian Ocean Tuna Commission
Indian Ocean Tuna Commission
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23rd Working Party on Billfish (WPB23)

Meeting: 
Working Party on Billfish (WPB)
Meeting year: 
2025
Meeting session: 
23
Date: 
Mon, 15/09/2025 - 09:00 to Thu, 18/09/2025 - 17:00
Venue country/city: 
France Sete
Location: 
Ifremer
Chairperson: 
Dr Jie Cao
Vice-Chairperson: 
Dr Sylvain Bonhommeau
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 (1 August 2025)
  • Paper titles  are due 30 days before the meeting starts (16 August 2025)
  • Full papers are due 15 days before the meeting starts (31 August 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-WPB23-DATA02 Annual amount of fish caught and retained 09/07/2025
IOTC-2025-WPB23-DATA03 Geo-referenced catch and effort data - All fisheries 09/07/2025
IOTC-2025-WPB23-DATA04 Geo-referenced size-frequency data - Swordfish(SWO) 09/07/2025
IOTC-2025-WPB23-DATA05 Geo-referenced size-frequency data - Indo-Pacific Sailfish(SFA) 09/07/2025
IOTC-2025-WPB23-DATA06 Geo-referenced size-frequency data - Striped marlin(MLS) 09/07/2025
IOTC-2025-WPB23-DATA07 Geo-referenced size-frequency data - Blue marlin(BUM) 09/07/2025
IOTC-2025-WPB23-DATA08 Geo-referenced size-frequency data - Black marlin(BLM) 09/07/2025
Information papers
Reference Title Available on File
IOTC-2025-WPB23-INF01 Status of marlins and sailfish catches- resolution 18/05 (IOTC Secretariat) 13/08/2025
IOTC-2025-WPB23-INF02 Population structure of the swordfish, Xiphias gladius, across the Indian Ocean using next generation sequencing 17/08/2025
IOTC-2025-WPB23-INF03 Spatial and Temporal Variation in the Catch Rates and Size of Swordfish (Xiphias gladius) in the Tanzanian EEZ 17/09/2025
Meeting documents
Reference Title Available on File
IOTC-2025-WPB23-01a Draft agenda for the 23rd Working Party on Billfish 29/07/2025
IOTC-2025-WPB23-01b Draft annotated agenda for the 23rd Working Party on Billfish 29/07/2025
IOTC-2025-WPB23-02 List of documents for the 23rd Working Party on Billfish 29/07/2025
IOTC-2025-WPB23-03 Outcomes of the 27th session of the Scientific Committee 29/07/2025
IOTC-2025-WPB23-04 Outcomes of 29th sessions of the Commission 29/07/2025
IOTC-2025-WPB23-05 Review of current Conservation and Management Measures relating to billfish species 29/07/2025
IOTC-2025-WPB23-06 Progress made on the recommendations and requests of WPB22 and SC27 29/07/2025
IOTC-2025-WPB23-07_1 Review of the statistical data available for Indian Ocean billfish species (1950-2023) 14/09/2025
IOTC-2025-WPB23-07_2 Review of the statistical data available for Indian Ocean black marlin (1950-2023) 14/09/2025
IOTC-2025-WPB23-07_3 Review of the statistical data available for Indian Ocean blue marlin (1950-2023) 14/09/2025
IOTC-2025-WPB23-07_4 Review of the statistical data available for Indian Ocean striped marlin (1950-2023) 14/09/2025
IOTC-2025-WPB23-07_5 Review of the statistical data available for Indian Ocean Indo-Pacific Sailfish (1950-2023) 14/09/2025
IOTC-2025-WPB23-07_6 Review of the statistical data available for Indian Ocean Swordfish (1950-2023) 14/09/2025
IOTC-2025-WPB23-08 Revision of the WPB Program of Work (2026-2030) 29/07/2025
IOTC-2025-WPB23-10 Billfish resources of India with special reference to the fishery and biology of blue marlin (Makaira nigricans) landed caught from the Eastern Arabian Sea 13/08/2025
IOTC-2025-WPB23-11 Billfish landing by foreign IOTC fishing vessels at Thai fishing ports during 2020 – 2024 28/08/2025
IOTC-2025-WPB23-12 Spatial temporal distribution of for Swordfish (Xiphias Gladius) catches and catch rates from the Kenyan industrial longline fishery 13/08/2025
IOTC-2025-WPB23-13rev1 Spatio-temporal Trends of Sailfish (Istiophorus platypterus) Catch Rates in the Sri Lankan Tuna Longline Fishery 13/08/2025
IOTC-2025-WPB23-15 Update on CPUE Standardization of Blue Marlin (Makaira nigricans) from Indonesian Tuna Longline Fleets 2006-2023 13/08/2025
IOTC-2025-WPB23-16rev1 Spatio-temporal model for CPUE standardization: application to blue marlin caught by Japanese tuna longline fishery in the Indian ocean from 1979 to 2023 13/08/2025
IOTC-2025-WPB23-17 CPUE standardization of blue marlin (Makaira nigricans) caught by the Taiwanese large-scale longline fishery in the Indian Ocean using GLM and sdmTMB 13/08/2025
IOTC-2025-WPB23-18rev1 Stock assessment of blue marlin (Makaira nigricans) in the Indian Ocean using JABBA 13/08/2025
IOTC-2025-WPB23-19 Stock assessment of blue marlin (Makaira nigricans) in the Indian Ocean using Stock Synthesis 13/08/2025
IOTC-2025-WPB23-20 Stock assessment for Indo-Pacific sailfish (Istiophorus platypterus) in Indian Ocean using Bayesian surplus production model (JABBA) 18/08/2025
IOTC-2025-WPB23-21 Consideration of exceptional circumstances for the Swordfish Management Procedure 2025 15/08/2025
IOTC-2025-WPB23-22 Standardization of the catch per unit effort for Swordfish (Xiphias Gladius) for the South African longline fishery 13/08/2025
IOTC-2025-WPB23-23 A review of potential management options for IOTC marlin and sailfish 15/08/2025
IOTC-2025-WPB23-24 On-deck condition and mortality of Indo-Pacific Sailfish (Istiophorus platypterus) in Indian Ocean tuna longline fisheries 18/08/2025

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