The Yorkshire rivers are all thought to be parasite free. Let's hope they were sourced from there. Makes sense distance wise. Fingers x'd for the Clyde system.
The Hampshire Avon and Dorset Stour were infected bythen legal re-distrubition of Kennet barbel in the fifties, as was the river Severn. Illegal stocking by thoughtless barbel 'enthusiasts' then spread the, always infected, offspring further into Wales and the Wye.
Yellow/orange P. laevis larvae are visible, unmistakable really, in Gammarus pulex kick samples. SEPA will know, unlike some blinkered EA regions.
I'll find some images for this thread tomorrow.
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Save the softmouth trout
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