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Indian Ocean Tuna Commission, Commission des Thons de líOcÈan Indien

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Science

Status and Conservation of the Stocks

Status summary for tuna and tuna-like species under the IOTC mandate, as well as other species impacted by IOTC fisheries (and measures to mitigate these impacts).

  • 2016: Summary stock status table from the latest Scientific Committee report (PDF file)
  • Executive Summaries by species or species group
  • 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

Science Process

The IOTC is essentially based on a three-step approach:

  • Collection of information on fisheries and scientific analysis to supply advice as needed.
  • Decision-making on the basis of the advice received.
  • Implementation and monitoring of compliance with the actions agreed.

The primary functions of the Scientific Committee and its Working Parties are to provide the Commission with the information it needs to manage fish stocks under the IOTC mandate, as well as the ecosystems in which the fisheries operate.

  • Commission
  • Scientific Committee
  • Working Parties (WP)
    • WP on Billfish (WPB)
    • WP on Data Collection and Statistics (WPDCS)
    • WP on Ecosystems and Bycatch (WPEB)
    • WP on Methods (WPM)
    • WP on Neritic Tunas (WPNT)
    • WP on Temperate Tunas (WPTmT)
    • WP on Tropical Tunas (WPTT)

Regional Observer Scheme

The objective of the IOTC Regional Observer Scheme is to collect verified catch data and other scientific data related to the fisheries for tuna and tuna-like species in the IOTC area of competence. More information can be found on this page.

  • IOTC Resolution 11/04 On a regional observer scheme
  • IOTC Regional observer manual (PDF file)
  • IOTC Observer Trip Report Template (PDF file)
  • IOTC Observer Forms (available in English and in French)
  • IOTC Species identification cards

Capacity Building: Science

  • Data collection and monitoring
  • Stock assessment training

Research projects and partners

Active research programs

The IOTC (Contracting Parties and Cooperating Non-Contracting Parties) and affiliated organisations have numerous research programs currently in progress. Below are links to several of the key projects/programs which are addressing direct requests of the Commission:

  • CSIRO Australia: Wealth from oceans
  • MADE Project
  • UMR 212 "écosystèmes marins exploités"
  • IRD's monitoring of the tuna purse seiners operating in the Indian and Atlantic Oceans
  • CLIOTP global program
  • Genetic Structure and Migration of albacore tuna (GERMON) (French only)
  • The French Fisheries data collection System of La Réunion (SIH) (French only)
  • Electronic tagging of yellowfin and bigeye tuna, PROSPER Project Phase 2

Past research programs

  • Regional Tuna Tagging Program
  • South West Indian Ocean Fisheries Project
  • Indian Ocean Swordfish Stock Structure Project (IOSSS) (French only)

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