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Fact Sheet Title Fact Sheet |
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Blackspot seabream - Northern and Southern Alboran Sea |
Pagellus bogaraveo - Northern and Southern Alboran Sea (GSAs 1, 3) |
| 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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Monitoring Range Min2010. ident Block | ident Block | | Species List: | Species Ref: en - Blackspot(=red) seabream, fr - Dorade rose, es - Besugo, ar - مرجان وردي, zh - 黑斑小鲷, ru - Пагель пятнистый |
Fishery IndicatorsProduction: Landed Volume |
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| ident Block Blackspot seabream - Northern and Southern Alboran Sea
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gfcm Sub Area |
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1 | Northern Alboran Sea |
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3 | Southern Alboran 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 and the stock size is overexploited. [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; Hard bottom. Depth Zone: Shelf (50 m - 200 m); Slope (200 m - 1000 m). Horizontal Dist: Neritic. Vertical Dist: Demersal/Benthic. Water Area Overview Spatial Scale: Sub-Regional Water Area Overview | Water Area Overview Blackspot seabream - Northern and Southern Alboran Sea
gfcm Sub Area | 1: Northern Alboran Sea | 3: Southern Alboran Sea |
| | | | Water Area Overview
| | | | Water Area Overview |
Water Area OverviewBlackspot seabream - Northern and Southern Alboran 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 This species is one of the most important commercial demersal species in the Strait of Gibraltar area. Discards might be considered negligible. However, there is not much information available on the stock structure of blackspot seabream in this narrow site. The Spanish fishery targeting blackspot seabream has been developing along the Strait of Gibraltar since the earliest 1980s. It is almost a mono-specific fishery, with one clear target species representing 74 percent from the total landed species, which constitutes a metier by itself. The voracera, a local mechanized hook-line baited with sardine, is the gear used by the fleet from the Tarifa and Algeciras ports in Spain. The most important Moroccan fleets targeting blackspot seabream (among other species) are the longliners mainly based at the port of Tangier and the artisanal fleet of the Strait of Gibraltar area. The fishery is carried out at 200-700 m depth and the gear used is the longline known as well as voracera. The Moroccan fishery is considered multi-specific. A consistent part of landings (even from Morocco) is sold on the Spanish market. Fishery Indicators Type | Measure | Value | Unit | Time period |
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Production | Landed Volume | 101 | tonnes | 1983 | Landed Volume | 166 | tonnes | 1984 | Landed Volume | 196 | tonnes | 1985 | Landed Volume | 225 | tonnes | 1986 | Landed Volume | 296 | tonnes | 1987 | Landed Volume | 319 | tonnes | 1988 | Landed Volume | 416 | tonnes | 1989 | Landed Volume | 428 | tonnes | 1990 | Landed Volume | 423 | tonnes | 1991 | Landed Volume | 631 | tonnes | 1992 | Landed Volume | 765 | tonnes | 1993 | Landed Volume | 854 | tonnes | 1994 | Landed Volume | 625 | tonnes | 1995 | Landed Volume | 769 | tonnes | 1996 | Landed Volume | 808 | tonnes | 1997 | Landed Volume | 534 | tonnes | 1998 | Landed Volume | 281 | tonnes | 1999 | Landed Volume | 305 | tonnes | 2000 | Landed Volume | 253 | tonnes | 2001 | Landed Volume | 198 | tonnes | 2002 | Landed Volume | 232 | tonnes | 2003 | Landed Volume | 271 | tonnes | 2004 | Landed Volume | 367 | tonnes | 2005 | Landed Volume | 416 | tonnes | 2006 | Landed Volume | 446 | tonnes | 2007 | Landed Volume | 488 | tonnes | 2008 | Landed Volume | 669 | tonnes | 2009 | Landed Volume | 507 | tonnes | 2010 | Landed Volume | 388 | tonnes | 2011 | Landed Volume | 261 | tonnes | 2012 | Landed Volume | 173 | tonnes | 2013 | Landed Volume | 269 | tonnes | 2014 | Landed Volume | 392 | tonnes | 2015 | Landed Volume | 261 | tonnes | 2016 | Landed Volume | 233 | tonnes | 2017 | Landed Volume | 83 | tonnes | 2018 | Landed Volume | 137 | tonnes | 2019 |
Bio Assess Data Landings, nominal fishing effort and length composition come from Spanish and Moroccan voracera fleets, when available. Biological parameters (sex ratio) come from Spain and Morocco sampling programmes while ageing comes from the Spanish National Data Collection Programme. Standardized CPUEs from Spain and Morocco have been used as biomass index since 2009. M scalar has a value of 0.2 and fix length-weight relationship (a = 3.14 and b = 0.0087, respectively). Model length range was from 18 cm to 62 cm and from ages 3 to 17. Every likelihood component weight was estimated using the iterative re-weighting function. Assess Models Type: Others Gadget Globally applicable area-disaggregated general ecosystem toolbox (gadget) model using Rgadget package. 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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