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Subject:	Re: Regent
From:	Peter Edwards <[log in to unmask]>
Reply To:	Informed Discussion of Beekeeping Issues and Bee Biology <[log in to unmask]>
Date:	Mon, 8 Apr 2013 23:16:40 +0100
Content-Type:	text/plain
Parts/Attachments:	text/plain (15 lines)

>The LD50 for fipronil (Regent) is 3.7 to 6 ng/bee compared to Imid of
>3.7-81 ng/bee. Regent is 6 max while Imid is 81 a factor of more than 10!"

Does LD50 have any real relevance fo neonicotinoids?  Surely it is the
sublethal effects that are important.

Best wishes

Peter

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