Dear All, While the above topic is being discussed by the group, I was wondering if any one had any thoughts on a problem I have. I work on sperm in the guppy (Poecilia reticulata) and I would like to bring some preserved females across from Trinidad. What I'm looking for is a method of killing and preserving them such that the sperm in the ovarian cavity of the female remains undisturbed. Ideally the preserving fluid would stop all cellular action immediately. I would like the female to reach me (in Scotland) with her ovarian cavity (and any sperm present) in exactly the same condition as when she was caught. I would be most grateful for any ideas that you may have on suitable methods of treatment, and will be happy to pass these on to any one else interested. Yours sincerely, Iain Matthews, School of Biological and Medical Sciences, University of St Andrews, St Andrews, Fife. Scotland. Tel + 44 1334 476161 Ext. 3220 Fax + 44 1334 463600
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