Last updated on 27 June 2016

SUMMARY

SUMMARY

IDENTIFICATION

SCIENTIFIC NAME(s)

Sander vitreus

SPECIES NAME(s)

Walleye, Yellow , Pickerel

Lake Erie walleye comprises different stocks and this group profile is related to the West and Central basins stock (SOLEC, 2011).

 


ANALYSIS

No related analysis

FISHSOURCE SCORES

Management Quality:

Management Strategy:

NOT YET SCORED

Managers Compliance:

NOT YET SCORED

Fishers Compliance:

NOT YET SCORED

Stock Health:

Current
Health:

NOT YET SCORED

Future Health:

NOT YET SCORED


RECOMMENDATIONS

RETAILERS & SUPPLY CHAIN
  • Identify and rectify issues that are preventing the MSC certification conditions from being closed out in the agreed timeframe. Offer assistance in closing conditions where possible.

FIPS

No related FIPs

CERTIFICATIONS

  • Lake Erie Multi-species Commercial:

    MSC Certified

Fisheries

Within FishSource, the term "fishery" is used to indicate each unique combination of a flag country with a fishing gear, operating within a particular management unit, upon a resource. That resource may have a known biological stock structure and/or may be assessed at another level for practical or jurisdictional reasons. A fishery is the finest scale of resolution captured in FishSource profiles, as it is generally the scale at which sustainability can most fairly and practically be evaluated.

ASSESSMENT UNIT MANAGEMENT UNIT FLAG COUNTRY FISHING GEAR
Lake Erie western and central Canada, Lake Erie Canada Gillnets and entangling nets
Traps
United States, Lake Erie United States Gillnets and entangling nets
Traps

Analysis

OVERVIEW

RECOMMENDATIONS

Last updated on 1 November 2018

Recommendations to Retailers & Supply Chain
  • Identify and rectify issues that are preventing the MSC certification conditions from being closed out in the agreed timeframe. Offer assistance in closing conditions where possible.

1.STOCK STATUS

STOCK ASSESSMENT

Last updated on 4 July 2012

Stock assessment is accomplished by the Walleye Task Group (WTG) of the Lake Erie Committee’s (LEC) that is part of the Great Lakes Fishery Commission (GLFC); recommendations are also made by some universities (e.g. Michigan State University).
An Automatic Differentiation Model Builder (ADMB) statistical catch-at-age (SCAA) analysis (introduced in 2001) was performed to determine population abundance on the Lake Erie, including data from three indexes of gillnet surveys and from sport (Ohio, west and central basins; Michigan, west basin) and commercial fisheries (Ontario, west and central basins); natural mortality (M) is fixed at 0.32. Recruitment is influenced by biotic and abiotic factors; the spawner-recruit relationship is poorly known (LEWTG, 2012).

SCIENTIFIC ADVICE

Last updated on 4 July 2012

Reference Points

Last updated on 04 Jul 2012

Reference points are set in the management plan. Blim at 20,000 fish is the low limit of the “low quality” population category and Btarget at 40,000 fish, the upper limit of the “high quality” population category. Fat low biomass is set at 0.2 and Ftarget at 0.35(Locke et al., 2005).

Canada
Gillnets and entangling nets

Last updated on 21 February 2011

The advised TAC (Recommended Allowable Harvest, RAH) is provided by WTG in annual reports. Is based on the WTG 2012 model (ADMB) and on the sliding-F scale harvest policy – a state-dependent approach defined in the 2005 management plan that varies target fishing mortality (Ftarget) rates depending on population abundance – and selectivity values from the current fisheries (LEWTG, 2012).

Traps

Last updated on 21 February 2011

The advised TAC (Recommended Allowable Harvest, RAH) is provided by WTG in annual reports. Is based on the WTG 2012 model (ADMB) and on the sliding-F scale harvest policy – a state-dependent approach defined in the 2005 management plan that varies target fishing mortality (Ftarget) rates depending on population abundance – and selectivity values from the current fisheries (LEWTG, 2012).

CURRENT STATUS

Last updated on 4 July 2012

Total abundance is at around 26,000 fish (LEWTG, 2012) below the long-term average and in the lower limit of the range established in the management plan (Locke et al., 2005). F is at 0.07, below Ftarget. The fishery is highly dependent on recruitment: poor year classes alternate with the 2003 strong year class and recently the 2007 moderate year class (SOLEC, 2011). A reduction in the stock abundance is expected to occur in 2013, to around 19,600 fish (LEWTG, 2012).

Trends

Last updated on 04 Jul 2012

During 2001-2003 a Coordinated Percid Management Strategy (CPMS) was adopted and a TAC of 3,400 tonnes established; in 2004, a TAC reduction of 30% was applied (=1,020 tonnes) (Locke et al., 2005). After the 2006 peak of 9,886 fish, the TAC has been progressively decreasing until 2010. Total catches increased progressively until 1988 reaching 10,030 fish, after then fluctuated around 4,000 – 8,000 fish but since 2001 is around 3,000 fish. After the peak at 76,700 fish in 1988, total abundance decreased until 2004 (15,850 fish) but reached the maximum peak in the following year (almost 93,000 fish); since then has been gradually decreasing. 1989 is the maximum peak for F (at 0.44), since then has been decreasing with the exception of the late 1990s period.

2.MANAGEMENT QUALITY

MANAGEMENT

Last updated on 4 July 2012

Recovery Plans

Last updated on 04 Jul 2012

The Walleye Management Plan was developed in 2005 to promote the stock recovery after a decreasing trend in the western and central basins in the 1960s. The main goal is to “secure a balanced, predominantly cool water fish community with walleye as a key predator in the western basin, central basin, and the nearshore waters of the eastern basin” and guarantee an abundance of around 26-40,000 fish (Locke et al., 2005). A Lake Erie Percid Management Advisory Group (LEPMAG) was created to follow the plan’s revision and assemble stakeholder groups and jurisdictions (LEWTG, 2012).

Canada
Gillnets and entangling nets

Last updated on 4 July 2012

The Ontario Ministry of Natural Resources (OMNR) manages Ontario’s commercial fisheries under the bi-national Great Lakes Fisheries Commission (that joins USA and Canada resources research and management) and different state agencies, the Ontario Commercial Fisheries Association (OCFA), the Ontario Fisheries Resource Centre and Aboriginal fishers (ECO, 2011).
The TAC is set annually by LEC and excludes the eastern Lake Erie stock. Is based on the RAH, allocated to each of the management areas (reasoned on the lake correspondent area), redistributed in “amounts of fish for conservation, subsistence and ceremonial use” and splitted in commercial and sport fisheries by OMNR (ECO, 2011). As well as in 2011 (2919,000 tonnes), the TAC for 2012 is in line with the advised TAC of 3487,000 tonnes. The minimum size is of 38.1 cm (15 inches). Sport and commercial fisheries are allowed during all year. A management plan is in place since 2005 and is currently under revision (SOLEC, 2011; LEWTG, 2012).

Traps

Last updated on 4 July 2012

The Ontario Ministry of Natural Resources (OMNR) manages Ontario’s commercial fisheries under the bi-national Great Lakes Fisheries Commission (that joins USA and Canada resources research and management) and different state agencies, the Ontario Commercial Fisheries Association (OCFA), the Ontario Fisheries Resource Centre and Aboriginal fishers (ECO, 2011).
The TAC is set annually by LEC and excludes the eastern Lake Erie stock. Is based on the RAH, allocated to each of the management areas (reasoned on the lake correspondent area), redistributed in “amounts of fish for conservation, subsistence and ceremonial use” and splitted in commercial and sport fisheries by OMNR (ECO, 2011). As well as in 2011 (2919,000 tonnes), the TAC for 2012 is in line with the advised TAC of 3487,000 tonnes. The minimum size is of 38.1 cm (15 inches). Sport and commercial fisheries are allowed during all year. A management plan is in place since 2005 and is currently under revision (SOLEC, 2011; LEWTG, 2012).

COMPLIANCE
Canada
Gillnets and entangling nets

Last updated on 4 July 2012

Fishers’ compliance is high; in 2011 the total walleye harvest was around 62% of the TAC and Ontario’s harvest was about 58% of quota (LEWTG, 2012). In Ontario, catch daily reports include declaration of bycatch and incidental catches (ECO, 2011).

Traps

Last updated on 4 July 2012

Fishers’ compliance is high; in 2011 the total walleye harvest was around 62% of the TAC and Ontario’s harvest was about 58% of quota (LEWTG, 2012). In Ontario, catch daily reports include declaration of bycatch and incidental catches (ECO, 2011).

3.ENVIRONMENT AND BIODIVERSITY

BYCATCH
ETP Species

Last updated on 4 July 2012

Lake Erie hosts eight fish species at risk. The gillnet bycatch is an additional threat for the recovery of the population of Lake sturgeon Acipenser fulvescens (Least Concern; 2008 IUCN Red List), especially in the west basin (ECO, 2011; Li & Jiao, 2011). The impact on the remaining Protected, Endangered and Threatened (PET) species is not known (ECO, 2011).

Other Species

Last updated on 4 July 2012

Other target and bycatch species are not known.

HABITAT

Last updated on 4 July 2012

Walleye is an apex predator and this should be considered in management, to guarantee the ecosystem’s equilibrium. Is severely influenced by biotic (predation of juveniles) and mainly abiotic factors (rainfall, water temperature on SSB). The spawning habitat is being reduced due to anthropic impacts (e.g. pollution, degradation of rivers) (Locke et al., 2005).
A new Strategic Vision of the Great Lakes Fishery Commission 2011–2020 was announced recently with the aim to achieve healthy ecosystems and sustainable fisheries.

Marine Reserves

Last updated on 04 Jul 2012

Protected areas are not designated in Lake Erie.

FishSource Scores

SELECT SCORES

MANAGEMENT QUALITY

STOCK HEALTH:

No data available
No data available
No data available
No data available
No data available
No data available
No data available
No data available
No data available
No data available
No data available
No data available

No related analysis

Fishery Improvement Projects (FIPs)

No related FIPs

Certifications

Marine Stewardship Council (MSC)

SELECT MSC

NAME

Lake Erie Multi-species Commercial

STATUS

MSC Certified on 20 August 2015

SCORES

Principle Level Scores for Walleye Large Mesh Gillnet:

Principle Score
Principle 1 – Target Species 90.0
Principle 2 - Ecosystem 80.3
Principle 3 – Management System 85.3

Principle Level Scores for Yellow Perch:

Gill Net Units of Certification (UoC):QZ1, QZ2, QZ3(E), QZ3(W)

Trap Net Units of Certification (UoC):MU1, MU2, MU3

Principle QZ1 QZ2 QZ3(E) QZ3(W) MU1 MU2 MU3
Principle 1 – Target Species 81.9 84.4 84.4 84.4 81.9 84.4 84.4
Principle 2 - Ecosystem 81.7 81.7 81.7 81.7 80.0 81.3 81.7
Principle 3 – Management System 85.3 85.3 85.3 85.3 85.3 85.3 85.3

Certification Type: Bronze

Sources

Credits
  1. Environmental Commissioner of Ontario (ECO), 2011. Ontario's Commercial Fisheries Policies,Engaging Solutions, ECO Annual Report, 2010/11. Toronto: The Queen's Printer for Ontario. 180 pp.http://www.eco.on.ca/uploads/Reports-Annual/2010_11/Final-English-Bookmarked-2010-AR.pdf
  2. Kerr, S., Dextrase, A. J., Lester, N. P., Lewis, C. A., Rietveld, H. J., 2004. Strategies for Managing Walleye in Ontario, Walleye Management Strategies Working Group, Percid Community Synthesis, 30 pp.http://www.mnr.gov.on.ca/stdprodconsume/groups/lr/@mnr/@letsfish/documents/document/226882.pdf
  3. Lake Erie Walleye Task Group (LEWTG), 2012. Report for 2011 by the Lake Erie Walleye Task Group, March 2012. Standing Technical Committee, Lake Erie Committee, Great Lakes Fishery Commission, 28 pp.http://www.glfc.org/lakecom/lec/WTG_docs/annual_reports/WTG_report_2012.pdf
  4. Locke, B., Belore, M., Cook, A., Einhouse, D., Kayle, K., Kenyon, R., Knight, R., Newman, K., Ryan, P., Wright, E. 2005. Lake Erie Walleye Management Plan, Lake Erie Committee, Great Lakes Fishery Commission, 46 pp.http://www.glfc.org/lakecom/lec/WTG_docs/other_reports_and_docs/wmp20051207.pdf
  5. State of the Lakes Ecosystem Conference (SOLEC), 2011. Draft Indicator Reports – Walleye, 7 pp.http://www.solecregistration.ca/documents/Walleye%20DRAFT%20Nov2011.pdf

Appended content

      References

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        Walleye - Lake Erie western and central

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