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

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122, sxay ;uhicn ?;la-i <strong>of</strong>iai
Irii id1 ife cecierati'on and a witness for -,he ;\I11F, 5s par-, 07 ni;
doctoral di ssertati on. The study , conductzd duri ng the peri cd
1974-78, examined separate coyote popuiations in the Curlsw Valley <strong>of</strong>
Utah and Idaho, which -,vas subject t3 noderate to high expioi cation,
and on ",he Idaho i?lar,ional Engi neeri ns Labora~ory (I?IEL) , lt~hich was
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considered to be unex?loited or at 123s-t moderafely so. ine stzdy
areas are approximataiy iGC km apart and ~nvironneneally similar.
Avai 1 abi 1 i t y and uti 1 i zation <strong>of</strong> pr2y were a? so simi 1 ar. Nei ?her
spring nor fall, density esiimaces oF coyoIes '~er? significantly
different betwen araas in any siven year or cvsrall. Huncing
accounted for rcughly 39 percent <strong>of</strong> all adult coyote iosszs and 54
percent G? juvenile deazhs jn the Curlew Ya112y. About 25 percznc
<strong>of</strong> adui 1 deaths and 12 ?er-c?nx <strong>of</strong> juvenil? deaths were due co hunting
in the INEL. Or. Cavison concIud2d thac his study showed chat
substantial exploi tation would not be effec-,ive in reduciny coyote
densities over wide arEas, becaus2 ?x~loita~ion losses wcuid ke
quickly <strong>of</strong>fset during fall and winter by reduced loss2s to other
causes and by reduced migration and are further <strong>of</strong>fset the following
spring by increased recruitment (birth and immigraticn) . He concluded
that increased recruitment would prevent any lasting reduction in
coyote density. Despite apparent differences in the levels <strong>of</strong>
~~u,;,zIT expi01 iai10fl, mere were t10 stacihilcai IY signlr icane --