Fisheries and Resources Monitoring System

Frigate tuna - Indian Ocean
Marine Resource  Fact Sheet
Stock status report 2018
Frigate tuna - Indian Ocean
Fact Sheet Citation  
Frigate tuna Indian Ocean
Owned byIndian Ocean Tuna Commission (IOTC) – More
Related observationsLocate in inventorydisplay tree map
FAO Names: en - Frigate tuna, fr - Auxide, es - Melva

Fishery Indicators
Production: Catch
Geographic extent of Frigate tuna - Indian Ocean
Main Descriptors
Considered a single stock: Yes        Management unit: Yes
Reference year: 2014
Biological State and Trend
State & Trend Descriptors
Exploitation rateNot assessed/Uncertain (F2014/FMSY (80% CI) = unknown)Uncertain/Not assessed
Abundance levelNot assessed/Uncertain (B2014/BMSY (80% CI) = unknown)Uncertain/Not assessed
Habitat and Biology
Climatic zone: Temperate; Tropical.   Horizontal distribution: Oceanic.   Vertical distribution: Pelagic.  

Geographical Distribution
Jurisdictional distribution: Highly migratory

Water Area Overview
Geo References
Resource Structure
Considered a single stock: Yes

No information is available on the stock structure of frigate tuna in Indian Ocean. The IOTC coordinated Stock Structure Project, which commenced in early-2015, aims to supplement gaps in the existing knowledge on biological data, and in particular provide an insight on whether neritic tuna and tuna like species should be considered as a single Indian Ocean stock.
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionCatch 3192tonnesAverage 1950 - 1959
Catch 5671tonnesAverage 1960 - 1969
Catch 10428tonnesAverage 1970 - 1979
Catch 22728tonnesAverage 1980 - 1989
Catch 45099tonnesAverage 1990 - 1999
Catch 71031tonnesAverage 2000 - 2009
Catch 79582tonnes2008
Catch 86448tonnes2009
Catch 99710tonnes2010
Catch 98604tonnes2011
Catch 95800tonnes2012
Catch 99480tonnes2013
Catch 103833tonnes2014
Catch 88955tonnes2015
Catch 89603tonnes2016
Catch 86934tonnes2017

No quantitative stock assessment is currently available for frigate tuna in the Indian Ocean, and due to a lack of fishery data for several gears, only preliminary stock status indicators can be used. Aspects of the fisheries for frigate tuna combined with the lack of data on which to base a more formal assessment are a cause for considerable concern. 
Scientific Advice

A precautionary approach to the management of frigate tuna should be considered by the Commission, by ensuring that future catches do not exceed current catches (average 2010-2014). The stock should be closely monitored. Mechanisms need to be developed by the Commission to improve current statistics by encouraging CPCs [Contracting parties and cooperating non-contracting parties] to comply with their recording and reporting requirements, so as to better inform scientific advice.
Management unit: Yes
Source of information
IOTC–SC21 2018. Report of the 21st Session of the IOTC Scientific Committee. Seychelles, 3 – 7 December 2018. IOTC–2018–SC21–R[E]: 250 pp.  Click to open
All references to figures, tables and bibliography in the text are found within the source of information.
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