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Marine Resource Fact Sheet |
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Indo-Pacific king mackerel - Indian Ocean |
Indo-Pacific king mackerel 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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Related observations | Locate in inventory | | Species: | FAO Names: en - Indo-Pacific king mackerel, fr - Thazard ponctué indo-pacifique, es - Carite del Indo-Pacífico |
Fishery IndicatorsProduction: Catch |
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| Geographic extent of Indo-Pacific king mackerel - Indian Ocean Map tips - Click on
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FAO Major Fishing Areas |
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51 | Indian Ocean, Western |
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57 | Indian Ocean, Eastern |
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Main Descriptors | Considered a single stock: Yes Management unit: Yes Reference year: 2019 |
Considered a single stock: A group of individuals in a species occupying a well defined spatial range independent of other stocks of the same species. It can be affected by random dispersal movements and directed migrations due to seasonal or reproductive activity. |
Spatial Scale: Spatial scale contains a standard term such as Global, Regional (e.g. for the whole Atlantic), sub-regional (e.g. for a part of the Atlantic), national, local (for sub-national levels). |
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. |
| | | | Biological State and Trend Habitat and Biology Climatic zone: Temperate; Tropical. Horizontal distribution: Oceanic. Vertical distribution: Pelagic. Geographical Distribution Jurisdictional distribution: Highly migratory Geo References  | Geographic extent of Indo-Pacific king mackerel - Indian Ocean
FAO Major Fishing Areas | 51: Indian Ocean, Western | 57: Indian Ocean, Eastern |
| | | | Intersecting Major FAO areas and LME areas |
The following area codes have been found as intersecting the distribution of Indo-Pacific king mackerel - Indian Ocean FAO Major Fishing Areas | 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 |
Resource Structure Considered a single stock: Yes No information is available on the stock structure of Indo-Pacific king mackerel stock structure 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 Type | Measure | Value | Unit | Time period |
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Production | Catch | 4630 | tonnes | Average 1950 - 1959 | Catch | 7268 | tonnes | Average 1960 - 1969 | Catch | 14798 | tonnes | Average 1970 - 1979 | Catch | 22288 | tonnes | Average 1980 - 1989 | Catch | 27149 | tonnes | Average 1990 - 1999 | Catch | 34584 | tonnes | Average 2000 - 2009 | Catch | 44423 | tonnes | Average 2010 - 2019 | Catch | 43012 | tonnes | 2011 | Catch | 40708 | tonnes | 2012 | Catch | 44595 | tonnes | 2013 | Catch | 47609 | tonnes | 2014 | Catch | 45685 | tonnes | 2015 | Catch | 44973 | tonnes | 2016 | Catch | 48096 | tonnes | 2017 | Catch | 43015 | tonnes | 2018 | Catch | 45796 | tonnes | 2019 | Catch | 42471 | tonnes | 2020 |
Assessment Level of uncertainty: High A new assessment was carried out in 2021 using the data-limited techniques (CMSY and LB-SPR). Analysis using the catch only method CMSY indicates the stock is being exploited at a rate that is below FMSY in recent years and that the stock appears to be above BMSY, although the estimates would be more pessimistic if the stock productivity is assumed to be less resilient. The analysis using the length-based approach (LB-SPR) was also undertaken in 2021 and the results are not conflicting with CMSY in terms of status. The catch-only model has provided a more defensible approach in addressing the uncertainty of key parameters and the currently available catch data for the Indo-Pacific king mackerel appear to be of sufficiently improved quality for conducting an assessment albeit still with some uncertainty. Based on the weight-of-evidence currently available, the stock is considered to be not overfished and not subject to overfishing (Table 1; Fig. 2). Assessment Model Type: Biomass-aggregated Optimised Catch Only Method (OCOM) Scientific Advice Reported catches of Indo-Pacific king mackerel in the Indian Ocean has increased considerably since the late 2000s with recent catches fluctuating around estimated MSY, although the catch in 2020 was below the estimated MSY. This suggests that the stock is very close to being fished at MSY levels and that higher catches may not be sustained despite the substantial uncertainty associated with the assessment, a precautionary approach to management is recommended. Management Management unit: Yes Source of information 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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