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Number 31
TABLE 2: SURVEILLANCE FOR PSP TOXINS IN ENGLISH
SHELLFISH COLLECTED BETWEEN MARCH AND SEPTEMBER 1993.
A total of 423 samples of shellfish were collected from 8 sites along the
North East coast of England and 11 other sites from areas along the coast of
England and Wales and analysed for PSP toxins using a bioassay. The limit of
determination of this assay is 40 µg saxitoxin equivalent/100g shellfish
flesh.
Sample type |
Number of samples |
PSP toxin concentrations detected
(µg/100g
shellfish flesh) |
Maximum concentration detected |
Number of samples in the range |
|
|
<40
|
40-80
|
>80
|
|
Mussels:
|
|
|
|
|
|
|
March
|
10
|
10
|
-
|
-
|
-
|
|
April
|
19
|
19
|
-
|
-
|
-
|
|
May
|
50
|
21
|
-
|
29
|
1588
|
|
June
|
80
|
54
|
14
|
12
|
241
|
|
July
|
41
|
41
|
-
|
-
|
-
|
|
August
|
29
|
29
|
-
|
-
|
-
|
|
September
|
28
|
28
|
-
|
-
|
-
|
|
Total
|
257
|
202
|
14
|
41
|
1588
|
Crab
|
76
|
68
|
8
|
-
|
-
|
Cockles
|
38
|
38
|
-
|
-
|
-
|
Winkles
|
22
|
19
|
3
|
-
|
-
|
Whelks
|
3
|
3
|
-
|
-
|
-
|
Oysters
|
5
|
5
|
-
|
-
|
-
|
Nephrops (tail)
|
1
|
1
|
-
|
-
|
-
|
Lobster (tail)
|
8
|
8
|
-
|
-
|
-
|
Table 1
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These pages were last updated on 1 October 1996
