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Red mullet - Northern Levant Sea
Fact Sheet Title  Fact Sheet
Stock status report 2021
Red mullet - Northern Levant Sea
Fact Sheet Citation  
Mullus barbatus - Northern Levant Sea (GSA 24)
Owned byGeneral Fisheries Commission for the Mediterranean (GFCM) – ownership
ident Blockident Blockdisplay tree map
 
Species List:
Species Ref: en - Red mullet, fr - Rouget de vase, es - Salmonete de fango, ru - Султанка обыкновенная (=барабулька)

Fishery Indicators
Production: Landed Volume
ident Block Red mullet - Northern Levant Sea
Aq Res
Biological Stock: No         Value: Sub-Regional
Reference year: 2019
 
 
Aq Res State Trend
Aq Res State Trend
Aq Res State Trend Aq Res State Trend
Aq Res State TrendPossibly sustainable exploitedNot applicable
Aq Res State TrendNot applicable
Aq Res State Trend
Aq Res State TrendNot applicable

Possibly sustainable exploitated.
[The GFCM methodology to provide stock status and management advice is described in the Appendix F of the Sixteenth Session of the Scientific Advisory Committee Report. See the Bibliography section.]
Habitat Bio
Climatic Zone: Temperate.   Bottom Type: Soft bottom.   Depth Zone: Shelf (50 m - 200 m).   Horizontal Dist: Neritic; Littoral.   Vertical Dist: Demersal/Benthic.  

Water Area Overview
Spatial Scale: Sub-Regional

Water Area Overview
Aq Res Struct
Biological Stock: No


Stock assessment in the GFCM area of application is often conducted by management units, based on GSAs. This method does not ensure that the whole stock is assessed, since stocks may cover several different management units. In some cases, when there is scientific evidence of a stock spreading through different GSAs, as well as information on species from different GSAs, existing information is combined across GSAs. This is then defined as a “joint stock assessment of a shared stock”. The GFCM recommends that when scientific evidence of shared stocks exists, joint stock assessments should be attempted. A number of activities aimed at achieving a better definition of stock boundaries are currently being conducted at the GFCM level. [The State of Mediterranean and Black Sea Fisheries, 2016]
Exploit
 

Red mullet is an important species for commercial fisheries, as it is one of the most landed demersal species in GSA 24. About 80 percent of red mullet is fished by bottom trawls and most of the remaining part is fished by gillnets. The stock in the eastern side is mainly exploited by bottom trawls, whereas in the western part, bottom trawling is very limited due to a 3 mile trawl exclusion zone where red mullet is mainly fished by small-scale fishers in negligible quantities.
Fishery Indicators
TypeMeasureValueUnitTime period
ProductionLanded Volume 890tonnes2019
Bio Assess
 
Data

Official landing data of red mullet by region used in the assessment were obtained from the Turkish Statistical Institute. Biological and monthly length frequencies data were collected from commercial fisheries by the Mediterranean Fisheries Research, Production, and Training Institute (MEDFRI) between 2018 and 2020 supported by the FAO EastMed project. Von Bertalanffy growth parameters reported in the previous stock assessment were used. L50 were estimated using the biological data from the MEDFRI.
Assess Models
Type:  Biomass-aggregated
CMSY

Length-based Bayesian Biomass (LBB), LBSPR and LIME length-based data limited stock assessment models were used in addition to catch-based data limited stock assessment model CMSY.
Sci Advice

Not to increase fishing mortality.
Sources
 
FAO. 2021. General Fisheries Commission for the Mediterranean (GFCM). Report of the twenty-second session of the Scientific Advisory Committee on Fisheries, online, 22–25 June 2021. FAO Fisheries and Aquaculture Report No. 1347. Rome. Click to openhttps://www.fao.org/3/cb7622en/cb7622en.pdf
Report of the Working Group on Stock Assessment of Demersal Species (WGSAD). Online, 18–23 January 2021. Click to openhttps://www.fao.org/gfcm/technical-meetings/detail/en/c/1412431/
GFCM Stock Assessment Results (STAR) for red mullet in GSA 24 (reporting year: 2021). Click to openhttps://gfcm.sharepoint.com/EG/_layouts/15/download.aspx?share=EWQWHl0OB31Bj-SgmNFp0BUBGHlyalotqZR3uAEBMfaghA
Bibliography
 
FAO. 2020. The State of Mediterranean and Black Sea Fisheries 2020. General Fisheries Commission for the Mediterranean. Rome. Click to openhttps://www.fao.org/3/cb2427en/cb2427en.pdf
FAO. 2016. The State of Mediterranean and Black Sea Fisheries. General Fisheries Commission for the Mediterranean. Rome, Italy. Click to openhttps://www.fao.org/3/i5496e/i5496e.pdf
FAO General Fisheries Commission for the Mediterranean/Commission générale des pêches pour la Méditerranée. Report of the sixteenth session of the Scientific Advisory Committee. St. Julian’s, Malta, 17–20 March 2014/Rapport de la seizième session du Comité scientifique consultatif. Saint Julien, Malte, Malte, 17-20 mars 2014. FAO Fisheries and Aquaculture Report/FAO Rapport sur les pêches et l’aquaculture. No. R1102. Rome. 2015. 250 pp. Click to openhttps://www.fao.org/3/i4381b/i4381b.pdf
General Fisheries Commission for the Mediterranean (GFCM) Stock Assessment Results (STAR). Click to openhttps://www.fao.org/gfcm/data/star/en/
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