Fisheries and Resources Monitoring System

Northern Prawn - Grand Bank
Fact Sheet Title  Fact Sheet
Stocks management recommendations 2019
Northern Prawn - Grand Bank
Fact Sheet Citation  
Northern Shrimp in Div. 3LNO
Owned byNorthwest Atlantic Fisheries Organization (NAFO) – ownership
ident Blockident Blockdisplay tree map
Species List:
Species Ref: en - Northern prawn, fr - Crevette nordique, es - Camarón norteño, ru - Креветка северная
ident Block Northern Prawn - Grand Bank
Aq Res
Biological Stock: Yes         Value: Regional
Management unit: Yes        Reference year: 2018
Aq Res State Trend
Aq Res State Trend
Aq Res State Trend Aq Res State Trend
Aq Res State TrendNone-Low Fishing Mortality (fishing mortality may not be the main driver of biomass for Flemish Cap shrimp)No or low fishing mortalityRed
Aq Res State TrendDepleted Stock SizeDepleted

Currently the risk of the stock being below Blim is greater than 95%. There is no indication of improved recruitment.
Habitat Bio
Climatic Zone: Temperate.   Bottom Type: Unspecified.   Depth Zone: Slope - Deepslope (500 m - 1000 m).   Horizontal Dist: Neritic.   Vertical Dist: Demersal/Benthic.  

Geo Dist
Geo Dist: Straddling between High Seas and EEZ

Water Area Overview
Spatial Scale: Regional

Water Area Overview
Aq Res Struct
Biological Stock: Yes

The fishery, until 2014, was a directed bottom trawl fishery and there is little or no bycatch of shrimp in other trawl fisheries. The fishery in Div. 3LNO is regulated by quota.
  2010 2011 2012 2013 2014 2015 2016 2017 2018 2019
Enacted TAC1 32767 20971 13108 9393 4697 ndf ndf ndf ndf ndf
STATLANT 21 19745 13013 10099 7919 2282 0 0 0 0  
NIPAG2 20536 12900 10108 8647 2289 0 0 0 0  
1 Includes autonomous TAC as set by Denmark in respect of Faroes and Greenland.
2 NIPAG catch estimates have been updated using various data sources (see p. 13, SCR. 14/048).

Effects of the fishery on the ecosystem

The fishery was closed to directed fishing beginning in 2015.
Bio Assess
Ref Point

Scientific Council considers that a female survey biomass index of 15% of its maximum observed level provides a proxy for Blim (SCS Doc. 04/12).

Quantitative assessment of risk at various catch options is not possible for this stock at this time.
Assess Models
Analytical assessment

Based upon a qualitative evaluation of trends in stock biomass, fishing mortality proxy and recruitment. Input data are research survey indices and fishery catches.

Next full assessment is planned for 2021.

Human impact

Mainly fishery related mortality has been documented. Other sources (e.g. pollution, shipping, oil-industry) are considered minor.

Biological and Environmental Interactions

After reaching record-high conditions in 2010-2011 (warmest conditions since 1980), the bottom temperature in 3LNO have cooled down to near-normal conditions in 2014-2018. Direct effects of temperature on shrimp distribution, recruitment, growth and survival are poorly understood.

Predation (by cod, Greenland halibut and redfish), low abundance of high energy prey (such as capelin) and environmental factors (including phytoplankton bloom dynamics) appear to be important drivers of the decline of Northern Shrimp in Divs. 2J3KL.

Fishing Mortality


Sci Advice

Special comments

Shrimp in Div. 3LNO are genetically distinct from those in Div. 3M and the Gulf of Maine, but not from those further north. Work is ongoing to investigate the contribution of stocks north of Div. 3L to the production of Div. 3LNO shrimp.

Research on transport of larval shrimp indicates that most larvae that originate in Div. 3L are transported out of that division. Additionally, it was found that most recruitment in Div. 3L originates further north of the area. The results of this research have not yet been quantified in order to develop a more comprehensive recruitment index for Div. 3LNO.
Management unit: Yes


Recommendation October 2019 for 2020 - 2021

No directed fishery in 2020 and 2021 as the stock is below Blim with no indication of short-term recovery.

No explicit management plan or objectives defined by Fisheries Commission. General convention objectives (GC Doc. 08/3) are applied. Advice is based on qualitative evaluation of biomass indices in relation to historic levels, and provided in the context of the precautionary approach framework (FC Doc. 04/18).

Stock definition for management purposes

The stock in Div. 3LNO is assessed and managed as a discrete population (see special comment).
Northwest Atlantic Fisheries Organization (NAFO). 2019. Report of the Scientific Council Meeting, 10 September 2019. Halifax, Nova Scotia, Canada. NAFO SCS Doc. 19/21. Click to open
Northwest Atlantic Fisheries Organization (NAFO). 2008. Resolution on the Interpretation and Implementation of the Convention on the Future Multilateral Cooperation in the Northwest Atlantic Fisheries. 30th Annual Meeting, September 2008. NAFO GC Doc. 08/3. Click to open
Northwest Atlantic Fisheries Organization (NAFO). 2004. NAFO Precautionary Approach Framework. Annual Meeting, September 2004. NAFO FC Doc. 04/18. Click to open
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