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| Fact Sheet Title Fact Sheet |
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| Red mullet - Southern and Central Tyrrhenian Sea |
 | Mullus barbatus - Southern and Central Tyrrhenian Sea (GSA 10) |
| | Data Ownership | | This document provided, maintained and owned by General Fisheries Commission for the Mediterranean (GFCM) , is part of GFCM Stock Status Reports data collection. |
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| ident Block | ident Block | | | | Species List: | | Species Ref: en - Red mullet, fr - Rouget de vase, es - Salmonete de fango, ru - Султанка обыкновенная (=барабулька) |
Fishery IndicatorsProduction: Catch |
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| ident Block Red mullet - Southern and Central Tyrrhenian Sea
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| gfcm Sub Area |
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| 10 | Southern and Central Tyrrhenian Sea |
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| Aq Res | Biological Stock: No
Value: Sub-Regional
Reference year: 2019 |
| 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. |
| | | | | | Aq Res State Trend In overexploitation. [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  | | Water Area Overview Red mullet - Southern and Central Tyrrhenian Sea
| gfcm Sub Area | 10: Southern and Central Tyrrhenian Sea |
| | | | | | Water Area Overview
| | | | | | Water Area Overview |
Water Area OverviewRed mullet - Southern and Central Tyrrhenian Sea 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 The fishing gear used to catch red mullet in GSA 10 together with other species (mixed catches) are gillnets, trammel nets and otter trawls. The discard data in the years with no available information were reconstructed on the basis of the discard data available and included in the assessment. Fishery Indicators | Type | Measure | Value | Unit | Time period |
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| Production | Catch | 715 | tonnes | 2002 | | Catch | 530 | tonnes | 2003 | | Catch | 414 | tonnes | 2004 | | Catch | 382 | tonnes | 2005 | | Catch | 396 | tonnes | 2006 | | Catch | 408 | tonnes | 2007 | | Catch | 314 | tonnes | 2008 | | Catch | 236 | tonnes | 2009 | | Catch | 220 | tonnes | 2010 | | Catch | 218 | tonnes | 2011 | | Catch | 261 | tonnes | 2012 | | Catch | 326 | tonnes | 2013 | | Catch | 379 | tonnes | 2014 | | Catch | 402 | tonnes | 2015 | | Catch | 412 | tonnes | 2016 | | Catch | 434 | tonnes | 2017 | | Catch | 403 | tonnes | 2018 | | Catch | 417 | tonnes | 2019 |
Bio Assess Data The information on the ALK and on the von Bertalanffy growth parameters was available from 2002 and appeared consistent with the recent paper of Carbonara et al. (2018) on age validation of red mullet in Adriatic Sea. M was estimated according to the Chen and Watanabe model (1989). Maturity ogives by length and age were available from 2002 to 2018 by sex. DCF was the data source for landings, discards and MEDITS survey. MEDITS data show large variations between years. In 2017, the survey was carried out in October-November. Data on landings and discards in 2017 was incomplete. Age 0 class was not included in the tuning indices used for the assessment. Assess Models Type: Age-structured a4a SCAA model (a4a) (Jardim et al. 2015) and FLBRP package, FLR. Results The estimated SSB and recruitment show an increase in recent years, current values are the highest of the time series. This is consistent with the increase in the MEDITS abundance indices and the decrease in fishing mortality, the latter being well below the reference point F0.1, used as proxy of FMSY. F displayed a decreasing trend all through the analysed period, and is now very close to the reference point. Sci Advice Reduce fishing mortality; STF available. 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.  https://www.fao.org/3/cb7622en/cb7622en.pdfReport of the Working Group on Stock Assessment of Demersal Species (WGSAD). Online, 18–23 January 2021.  https://www.fao.org/gfcm/technical-meetings/detail/en/c/1412431/ Bibliography FAO. 2020. The State of Mediterranean and Black Sea Fisheries 2020. General Fisheries Commission for the Mediterranean. Rome. https://www.fao.org/3/cb2427en/cb2427en.pdfFAO. 2016. The State of Mediterranean and Black Sea Fisheries. General Fisheries Commission for the Mediterranean. Rome, Italy. https://www.fao.org/3/i5496e/i5496e.pdfFAO 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. https://www.fao.org/3/i4381b/i4381b.pdfGeneral Fisheries Commission for the Mediterranean (GFCM) Stock Assessment Results (STAR). https://www.fao.org/gfcm/data/star/en/ |
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