[CC to cfprmb at aisl.bc.ca]
> I am wondering if anyone can advise me on what to do about a Polydora
> infestation on Abalone broodstock.
Depends what harm the worms are doing, in what way, and what species
of Polydora. The message doesn't say. Wild Haliotis iris in New Zealand
tolerate quite enormous populations of various Polydora & Boccardia, and
one would be hard put to demonstrate a negative effect apart from a
tolerable shell weakening. Normally inner shell blisters don't occur. But in
hatchery culture one very probably wouldn't want worms establishing on the
youngest abalone. Simple air drying for several hours as a treatment for
40 mm abalone has been used successfully in an Australian study.
--
Geoff Read <g.read at niwa.cri.nz>
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