NORTH WESTERN AND NORTH WALES SEA FISHERIES COMMITTEE

OFFICER’S REPORT

 

SEED MUSSEL MOVEMENTS

Report by the Senior Scientist.

A. Purpose of Report

To update Members on authorisations to harvest and relay seed mussels in the District in 2006.

B. Recommendations

1. That Officers’ actions to make effective use of the 2006 mussel spatfall be endorsed.

1. Background

1.1 At the Joint Committee Meeting in September 2006 Members were informed of the exceptionally heavy spatfall of mussels in Morecambe Bay and proposals for making the best use of it as a seed resource

1.2 This report updates Members with the progress of these proposals and the issuing of further authorisations.

1.3 Further applications to create experimental cultivation areas in Morecambe Bay under Byelaw 1 are considered in a separate report at Agenda Item 4.

2. Seed Mussel Dredging

2.1 Seed mussel harvesting was initially authorised on the "Falklands" area, further offshore than the usual "South America" seed mussel area. However, by mid September this area had become difficult to fish, with the remaining mussels being embedded in the substrate. Inspection of the "South America" area showed that a substantial seed resource, probably amounting to 5,000 tonnes, was present here. Officers therefore consulted with English Nature (now Natural England) regarding the conservation implications of harvesting these mussels. Seed mussel dredging on "South America" was authorised and licensed in early October.

3. Seed Mussel Hand-Gathering

3.1 Hand gathering of seed mussels on Heysham Flat commenced on 24th August. This fishery attracted much more effort than in 2005, but regular inspections showed that the stock of seed, which was much greater and more extensive than in 2005, held up very well. Only one area showed very heavy losses, and this was due to erosion rather than fishing. It is hoped that the fishery will have had the effect of thinning out the mussel stock and therefore improving its survival over the winter period. This could benefit both the future mussel fishery and wildlife, as the juvenile mussels are used as food by oystercatchers over the winter months. It is planned to visit the area regularly during the winter, to monitor the survival of the remaining stock.

3.2 A further stock of intertidal seed mussels exists on Black and Perch Scars, near Fleetwood. Recent inspection shows that much of the stock on Perch Scar has been lost through erosion. A significant stock still remains on Black Scar, but it is already showing signs of scour and loss. Officers intend to consult with Natural England, and if possible to issue authorisations to hand-gather this stock for use as seed.

4. Seed Mussel Relaying

4.1 Seed mussel relaying has taken place at a number of locations. As well as the mussels deposited for ongrowing on the Menai Strait Several Order lays, the following activity has now taken place:

4.2 Ballast Bank. The agreed relaying of 1,000 tonnes of mussels onto Ballast Bank, in order to over-winter and harden the stock, has been successfully carried out. It is proposed that half of this stock will be removed by dredger in 2007, with half being left to benefit the hand-gathering fishery.

4.3 Conwy. Some 750 tonnes of mussels has been relayed at Conwy, onto the Morfa and Gamlwys beds. A preliminary inspection has shown that the Morfa relaying has been very successful, although a bigger tide will be necessary to see if mussels laid on the Gamlwys have remained in the area.

4.4 Walney Channel. Agreement was reached with English Nature to relay 2,500 tonnes of seed mussel along the west side of Foulney Twist, adjacent to the Walney Channel. To date, some 800 tonnes of mussels have been relayed in this area. The shortfall is due to authorised harvesting area (the "Falklands" area) becoming difficult to fish. It is hoped to make up the shortfall by taking seed mussels from the "South America" skear.

4.5 Ring Hole. To date, there has been no relaying of seed in the area around Baiting Knott and the Reap Skear.

BILL COOK

Senior Scientist

9th October 2006

LOCAL GOVERNMENT (ACCESS TO INFORMATION) ACT, 1985

List of Background Papers

There are no background papers to this report.

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