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Fact Sheet Title Fact Sheet |
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Yellowfin tuna - Indian Ocean |
Yellowfin tuna Indian Ocean |
| Data Ownership | This document provided, maintained and owned by Indian Ocean Tuna Commission (IOTC) , is part of IOTC Stock Status Reports data collection. |
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ident Block | ident Block | | Species List: | Species Ref: en - Yellowfin tuna, fr - Albacore, es - Rabil, ru - Тунец желтоперый |
Fishery IndicatorsProduction: Catch |
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| ident Block Yellowfin tuna - Indian Ocean Map tips - Click on to turn layers on and off
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fao Major |
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51 | Indian Ocean, Western |
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57 | Indian Ocean, Eastern |
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Aq Res | Biological Stock: Yes Management unit: Yes Reference year: 2017 |
Considered a management unit: An aquatic resource or fishery is declared as [Fishery] Management Unit if it is effectively the focus for the application of selected management methods and measures, within the broader framework of a management system. According to the FAO Glossary for Responsible Fishing, "a Fishery Management Unit (FMU) is a fishery or a portion of a fishery identified in a Fishery Management Plan (FMP) relevant to the FMP's management objectives." FMU's may be organised around fisheries biological, geographic, economic, technical, social or ecological dimensions , and the makeup and attribute of a fishery management unit depends mainly on the FMP's management objectives. |
Jurisdictional distribution: Jurisdictional qualifier (e.g. "shared", "shared - highly migratory") of the aquatic resource related with its spatial distribution. |
Environmental group: Classification of the aquatic resource according to the environmental group (e.g. pelagic invertebrate, or demersal fish) to which the species belong. |
Reference Year: The Reference Year is the last year considered in the stock assessment and/or fishery status. |
| | | | Habitat Bio Climatic Zone: Temperate; Tropical. Horizontal Dist: Oceanic. Vertical Dist: Pelagic. Geo Dist Geo Dist: Highly migratory Geo Dist | Geo Dist Yellowfin tuna - Indian Ocean
fao Major | 51: Indian Ocean, Western | 57: Indian Ocean, Eastern |
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Geo DistYellowfin tuna - Indian Ocean fao Major | 51: Indian Ocean, Western | 57: Indian Ocean, Eastern | Large Marine Ecosystem Areas (LME) | 30: Agulhas Current | 31: Somali Coastal Current | 32: Arabian Sea | 33: Red Sea | 34: Bay of Bengal | 38: Indonesian Sea | 39: North Australian Shelf | 42: Southeast Australian Shelf | 43: Southwest Australian Shelf | 44: West-Central Australian Shelf | 45: Northwest Australian Shelf |
Aq Res Struct Biological Stock: Yes The tag recoveries of the RTTP-IO [Regional Tuna Tagging Project-Indian Ocean] provide evidence of large movements of yellowfin tuna, thus supporting the assumption of a single stock for the Indian Ocean. Exploit Fishery Indicators Type | Measure | Value | Unit | Time period |
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Production | Catch | 27548 | tonnes | Average 1950 - 1959 | Catch | 51704 | tonnes | Average 1960 - 1969 | Catch | 53344 | tonnes | Average 1970 - 1979 | Catch | 127986 | tonnes | Average 1980 - 1989 | Catch | 333379 | tonnes | Average 1990 - 1999 | Catch | 395540 | tonnes | Average 2000 - 2009 | Catch | 400063 | tonnes | Average 2010 - 2019 | Catch | 335928 | tonnes | 2011 | Catch | 399646 | tonnes | 2012 | Catch | 400885 | tonnes | 2013 | Catch | 405972 | tonnes | 2014 | Catch | 402828 | tonnes | 2015 | Catch | 427619 | tonnes | 2016 | Catch | 421818 | tonnes | 2017 | Catch | 442140 | tonnes | 2018 | Catch | 448643 | tonnes | 2019 | Catch | 430029 | tonnes | 2020 |
Bio Assess No new stock assessment was carried out for yellowfin tuna in 2020, thus, stock status is determined on the basis of the 2018 assessment and other information presented in 2020. In 2018 a new stock assessment was carried out for yellowfin tuna in the IOTC area of competence to update the stock status undertaken in 2016. On the weight-of-evidence available in 2018, the yellowfin tuna stock is determined to remain overfished and subject to overfishing. Assess Models Type: Age-structured Stock Synthesis III (SS3) Sci Advice The decline in stock status to below MSY level is not well understood due to various uncertainties. As a precautionary measure, the Commission should ensure that catches are reduced to end overfishing and allow the SSB to recover to SSBMSY levels. At this stage, specific catch limits are not provided. Management Management unit: Yes Sources IOTC–SC23 2020. Report of the 23rd Session of the IOTC Scientific Committee. Seychelles, 7 – 11 December 2020. IOTC–2020–SC23–R[E]: 211pp. https://www.iotc.org/sites/default/files/documents/2021/06/IOTC-2020-SC23-RE_Rev1.pdf Bibliography All references to figures, tables and bibliography in the text are found within the source of information. |
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