Certifier : 
Bureau Veritas Certification
Certified status : 
Withdrawn
Certified since : 
11 Jul 2016
Certificate expires : 
10 Jul 2021

Overview

Fisheries are composed of one or more parts, each of which is entitled to receive an MSC certificate. These parts or “units” are defined by their target stock(s), fishing gear type(s) and if relevant vessel type(s), and the fishing fleets or groups of vessels.

When the term “Unit of Certification” is used for fishing units that are in assessment, it refers to the “Unit of Assessment” or “Unit of potential certification”. Expand a status below to view the parts that form this fishery. To check the detailed scope, download the latest certificate or open the Assessments page to get the latest report. Find out more by visiting our page on Fisheries

Units of Certification & Certificate Information

  • No longer in the program
    MSC UoC Number Species Gear Type Ocean Area Status (Units of Certification) Certificate Code
    UoC-1271 American slipper-limpet (Crepidula fornicata) Dredges - Boat dredges 27 (Atlantic, Northeast) Withdrawn MSC-F-31255 (F-BV-1271)

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Catch by Species

Species Reported Catch Year Metric Tonnes
American slipper-limpet (Crepidula fornicata) 2017 0

Information is provided by an independent Conformity Assessment Body as live weight (the weight of species at the time of catch, before processing) and where a fishing season covers multiple years, the end year is given as the reported catch year. Additional information is available in the latest report, see the assessments page.

About this Fishery

The slipper limpet (Crepidula fornicata) is a native of the Atlantic coast of North America, with an arched, rounded shell which varies in size from 20-50mm. It was introduced accidentally into European waters during the 1930s. The species acclimated well, and has since spread to all bays and estuaries from Norway to Spain, mostly living at depths from 0-5m. Today, the highest concentrations are found in the English Channel.

Cancale Bay is located in the western part of France’s famous Bay of Mont St Michel, covering a wide shallow sandy area in the lee of the Herpin Islands. The invasive slipper limpet is first thought to have reached the area at the beginning of the 1970s, the larvae finding favourable conditions due partly to the shell substrates created by the oyster farming which takes place in the bay. Dredging for the oysters has also dispersed the limpets over a wider area. The limpets now cause problems for the oyster fishery.