Recent approaches to controlling mountain beavers (Aplodontia rufa) in Pacific Northwest forests

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" Recent approaches to controlling mountain beavers (Aplodontia rufa) in Pacific Northwest forests "
Campbell, Dan L.; Evans, James

Document Type	:	AL
Record Number	:	942850
Doc. No	:	LA3wq0z27s
Language of Document	:	English
Main Entry	:	Campbell, Dan L.; Evans, James
Title & Author	:	Recent approaches to controlling mountain beavers (Aplodontia rufa) in Pacific Northwest forests [Article]\ Campbell, Dan L.; Evans, James
Title of Periodical	:	Proceedings of the Vertebrate Pest Conference
Volume/ Issue Number	:	13
Date	:	1988
Abstract	:	Biologists of the Denver Wildlife Research Center are currently investigating ways of managing mountain beaver (Aplodontia rufa) populations and are developing methods for alleviating mountain beaver damage to conifer trees being grown for timber in the Pacific Northwest. Studies initiated in I 986 indicated that aversive conditioning with Big Game Repellent Powder (BGR-P) dusted on cull Douglas-fir (Pseudotsuga menziesii) seedlings placed in burrows significantly reduced mountain beaver damage to planted seedlings treated with BGR-P and to untreated seedlings. Trials also showed that strychnine-sword fem (Polystichum munitum) baits prepared with a 4.9% (active) strychnine paste concentrate (SLN Reg. No. ID-870003) are very effective and selective for mountain beaver control. Other subjects discussed include results of several probes with toxic baits and phosphine gas, trials with a drug and a wetting agent to induce hypothermia, destruction of underground nests to prevent reinvasion, and mountain beaver behavior associated with controlling damage.