HC Deb 22 June 1990 vol 174 c745W
Mr. Allan Stewart

To ask the Secretary of State for Scotland if he will publish the findings of research carried out by scientists of his Department on the effects of Aquagard sea lice treatment.

Mr. Lang

Scientists of the Department of Agriculture and Fisheries for Scotland's marine laboratory have carried out the following studies on the use and the effects of dichlorvos (the active ingredient of Aquagard).

  1. 1. Toxicity of dichlorvos to larvae of the common lobster (Homarus gammarus L.) and herring (Clupea harengus L.).
  2. 2. Comparative toxicity of dichlorvos to marine invertebrates.
  3. 3. Toxicity of dichlorvos to stage 4 Homarus gammarus larvae.
  4. 4. Effects of repeated short exposures to dichlorvos on lobster larvae.
  5. 5. Effects of dichlorvos treatment at fish farms upon lobster larvae and mussels maintained in cages.
  6. 6. Survey of invertebrate communities in the vicinity of salmon farm cages in Scottish west coast sea lochs.
  7. 7. Toxicity of insecticides to larvae of the common lobster (Homarus gammarus L.).
  8. 8. Fate of dichlorvos (DDVP) in sea water following treatment for salmon louse Lepeophtheirus salmonis infestation in Scottish fish farms.

I have arranged for copies of reports on these studies to be placed in the Library and they will also be made available as Scottish fisheries working papers.