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Publication - Statistics Publication

Scottish shellfish farm production survey 2016

Published: 31 May 2017
Part of:
Marine and fisheries
ISBN:
9781786529770

Report based on returns from annual survey questionnaire sent to all active authorised shellfish farming businesses in Scotland.

25 page PDF

2.3MB

25 page PDF

2.3MB

Contents
Scottish shellfish farm production survey 2016
Production

25 page PDF

2.3MB

Production

The survey indicates that the shellfish species cultivated in Scottish waters in 2016 were:

Mussel: Mytilus spp .
Pacific oyster: Crassostrea gigas
Native oyster: Ostrea edulis
Queen scallop: Aequipecten opercularis
Scallop: Pecten maximus

Production was dominated by mussel and Pacific oyster, although small quantities of scallop, queen scallop (queen) and native oyster were also produced. The 2016 production data for each species by region are given in Table 1.

Table 1: Scottish shellfish production by region, 2016.

Region Businesses Mussel Pacific oyster Native oyster Queen Scallop
(tonnes) (000s) (000s) (000s) (000s)
Tonnes Table Tonnes on-growing 000s Table 000s on-growing 000s Table 000s on-growing 000s Table 000s on-growing 000s Table 000s on-growing
Highland 47 703 0 1,321 3,527 0 3 1 0 32 20
Orkney 3 0 0 0 0 0 0 0 0 0 0
Shetland 25 5,686 2,331 0 0 0 0 0 0 0 0
Strathclyde 49 616 278 2,143 1,057 201 320 154 17 3 3
Western Isles 14 727 10 70 0 0 0 0 0 0 0
All Scotland 138 7,732 2,619 3,534 4,584 201 323 155 17 35 23
Weight (Tonnes) 7,732 2,619 283 16 6 4

NB: this report lists regions with active shellfish farms operated by Authorised Aquaculture Production Businesses.
Conversion to weight used the following assumptions (based on industry figures): individual oysters averaged 80g; individual scallops averaged 120g; individual queens averaged 40g.
Table = sales directly for human consumption;
on-growing = sales to other businesses for on-growing.

Table production by species is illustrated in Figure 1 ( see below), while trends in production for the table market and on-growing in Scotland are presented in Table 2.

Table 2: Trends in production data for the table and on-growing 2007-2016.

For the table 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 % change 15-16
Pacific oyster (000s) 2,603 3,093 2,900 3,008 3,136 2,706 1,891 3,392 2,693 3,534 31
Native oyster (000s) 273 250 490 350 350 317 260 242 200 201 0.5
Queen (000s) 384 687 138 184 27 9 33 18 33 155 370
Scallop (000s) 15 15 35 64 78 58 40 48 30 35 17
Mussel (tonnes) 4,806 5,869 6,302 7,199 6,996 6,277 6,757 7,683 7,270 7,732 6
For on-growing 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016
Pacific oyster (000s) 945 26 45 1,633 1,400 3,190 6,216 6,792 5,864 4,584
Native oyster (000s) 10 0 0 300 1 677 1,015 749 13 323
Queen (000s) 0 0 30 0 0 0 1,490 500 900 17
Scallop (000s) 45 0 0 0 104 16 1,470 136 49 23
Mussel (tonnes) 44 30 391 175 282 309 1,281 1,263 1,841 2,619

Mussel production, for the table, increased by 6% in 2016 ( see figure 1) to 7,732 tonnes. This is the highest level of mussel production recorded in Scotland. The greatest contribution in regional mussel production was from Shetland, accounting for 5,686 tonnes or 74% of Scotland's total. Pacific oyster production increased by 31% from 2015. The Strathclyde region produced 61% of Scotland's farmed Pacific oysters. Queen scallop production increased by 370% since 2015 and the production of farmed scallops increased by 17%, both these sectors continue to target small niche markets. Production of native oysters increased by 0.5% from 2015. Native oyster production accounts for a small percentage of total oyster production, however, demand for this species continues to be high. Historical data for all shellfish species show that production levels vary year on year, this can be due to a number of different factors such as poor spat fall, algal toxins, poor growth, adverse weather and fluctuations in market prices.

Figure 1: Table production by species 2007-2016

Figure 1: Table production by species 2007-2016

Prices of farmed shellfish fluctuated throughout the year. Their value at first sale was estimated from the following figures (supplied by industry these vary with demand, level of production and geographical area of origin). The average price of Pacific oyster was £0.39 per shell; native oyster, £0.60 per shell; scallop, £2.03 per shell; queen scallop, £0.12 per shell and mussels £1300 per tonne. The value of the table trade is estimated from the production figures shown in Table 1 ( see above).

Mussel: £10.1 million
Native oyster: £0.12 million
Queen: £0.02 million
Pacific oyster: £1.4 million
Scallop: £0.07 million

The 2016 total value, at first sale for all species, was calculated at approximately £11.7 million, a increase from £10.1 million estimated in 2015.


Contact

Email: Lorna Munro

Phone: 0300 244 4000 – Central Enquiry Unit

The Scottish Government
St Andrew's House
Regent Road
Edinburgh
EH1 3DG