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Frigate tuna - Indian Ocean
Marine Resource  Fact Sheet
Stock status report 2016
Frigate tuna - Indian Ocean
Fact Sheet Citation  
Frigate tuna Indian Ocean
Owned byIndian Ocean Tuna Commission (IOTC) – More
Related observationsLocate in inventorydisplay tree map
 
Species:
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
PartnerFIRMS
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.
Exploitation
 
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionCatch 3191tonnesAverage 1950 - 1959
Catch 5670tonnesAverage 1960 - 1969
Catch 10428tonnesAverage 1970 - 1979
Catch 22728tonnesAverage 1980 - 1989
Catch 45098tonnesAverage 1990 - 1999
Catch 71031tonnesAverage 2000 - 2009
Catch 74030tonnes2006
Catch 80862tonnes2007
Catch 79582tonnes2008
Catch 86448tonnes2009
Catch 99710tonnes2010
Catch 98618tonnes2011
Catch 95725tonnes2012
Catch 98524tonnes2013
Catch 98977tonnes2014
Catch 81441tonnes2015
Assessment
 

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
Management unit: Yes
Source of information
 
IOTC–WPNT06 2016. Report of the 6th Session of the IOTC Working Party on Neritic Tunas. Mahe, Seychelles 21 – 24 June 2016. IOTC–2016–WPNT06– R[E]: 89 pp.  Click to openhttp://www.iotc.org/sites/default/files/documents/2016/08/IOTC-2016-WPNT06-RE_-_FINAL_DO_NOT_MODIFY.pdf
Bibliography
 
Frigate tuna supporting information for the 6th Session of the IOTC Working Party on Neritic Tunas. 2016.  Click to openhttp://www.iotc.org/sites/default/files/documents/science/species_summaries/english/Frigate%20tuna%20Supporting%20Information.pdf
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