New Zealand Journal of Zoology abstracts
Evaluation of iophenoxic acid and rhodamine B for marking feral ferrets
(Mustela furo)
SHAUN C. OGILVIE
CHARLES T. EASON*
Landcare Research
P.O. Box 69
Lincoln, New Zealand
*Author for correspondence
Abstract The blood marker iophenoxic acid, and the
fluorescent dye rhodamine B, were evaluated as means of assessing bait
consumption in the ferret, Mustela furo. Iophenoxic acid was elevated
above baseline concentrations for a minimum of 28 days after dosing, indicating
that it is a suitable medium-term marker. Rhodamine B marked ferrets for a
maximum of 7 days, and would therefore have limited operational use with
feral ferrets. Iophenoxic acid was used in a field trial to assess the
effectiveness of a newly developed baiting strategy for control of wild
ferrets. All 21 ferrets captured after field baiting with iophenoxic acid had
elevated levels of serum iodine, indicating that the newly developed baiting
strategy is highly effective for marking ferrets.
Keywords ferret; Mustela furo; bait markers;
iophenoxic acid; rhodamine B; baiting strategies; pest control
technology
Received 12 May 1997; accepted 7 November 1997
PDF file of entire paper: medium quality (301K); (scanned from paper original: notes about this process)
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