Notice of Hearing on the Application to Use Sodium Fluoroacetate ...

73. The t~xic col lzr crsnsists 3= 3 rirCcer reswr.ioir zgntainins'a :c~::ic
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liquid, in chis case a solution <strong>of</strong> IC80, attached to he necks
<strong>of</strong> sheep or goats by straps. Use <strong>of</strong> the toxic collar is based
upon th2 principle that coyotes normally attack shee~ and goats
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by bicing the necks or ~hroats. ine iS22 is that in the course
<strong>of</strong> such an attack the cgllar woui~ be aunctured and ihe csyots
~ould rocsi ve a lst3a1, sral dose <strong>of</strong> 1C80. A? though ?unc:ure 3f
;he collar in this fashion resul~s in rsnoval zf che <strong>of</strong>Fznding
coyote, the coyocs's a:tack usually also results in the death <strong>of</strong>
the sheep or gcat t3 vdhich the co1 I ar was at-cacned.
7 . The toxic coi lsr has been ?xt?nsil/sly testgd by. cke F:JS unc2r an
experiinenta; use permi t and the 7,iS has mpi i ed far r",-4-rv'" bt ! > - 4 d Ll on
<strong>of</strong> Ccuncouna 'I 082 in zce ccxic zol iar. Fiela :?st8 cf the co? :zrs
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were conducted in Idano, 3ontan5, 12x2s and Alber~a, Canada, during
the period June 7, 1978 to and i ncl udi ng March 31 , 1980. Of 28
field tgsts during chis period, 17 were consider%! successf~l in
that preoation eicner sxopped or declzned following use <strong>of</strong> the
collars. Eleven tests wern U ~ S U C C ~ ~ Sccause S ~ U ~ predation st~pped
for unknown reasons or coyotes did not attack collared animals. O f
52 attacks by coyotes on collared sheep during the period June
through October 1978, 36 cr 69 percent <strong>of</strong> collars were punctured
8/ In addition to sodium fluoroacetate, field tests <strong>of</strong> the collar
have 6een conducted using sodium cyanide and diphacinone as the toxicant
So;j."m fl"oi-fiacetate has "-A- '-';"A"^-' -A"+ ",""^"F"l
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