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CONFERENCE SCHEDULE UPDATES & CHANGES: As a result of the prolonged government shutdown, we experienced a number of cancellations and changes to the schedule. Cancellations and changes are listed here (as of January 26, 2019). 

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Monday, January 28 • 3:20pm - 3:40pm
(WILDLIFE: CERVIDS) Causes of Mortality in Minnesota’s Declining Moose Population

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AUTHORS: Michelle Carstensen, Erik C. Hildebrand, Dawn Plattner, Margaret Dexter – Minnesota Department of Natural Resources; Arno Wünschmann, Anibal Armien – University of Minnesota-Veterinary Diagnostic Laboratory

ABSTRACT: Minnesota’s moose (Alces alces) are dying at rates much higher than elsewhere in North America. Moose have been nearly extirpated from the northwestern part of the state and aerial surveys indicate the northeastern population has declined 55% over the past decade. In 2013, a new study began to determine cause-specific mortality of adult moose in northeastern Minnesota by using GPS-satellite collars to get rapid notification of mortality events and recover carcasses within 24 hours of death. A total of 173 moose were collared over 3 years with annual non-hunting mortality rates of 19%, 12%, 15%, 13% and 14% in 2013-2017, respectively, and an overall mean of 14.4%. In total, 57 moose have died from non-hunting sources of mortality and 3 moose were legally harvested. Response times from mortality notification to arrival at the carcass were within 24 hours for 65% of death events. Most causes of mortality were health-related (65%), which included parasites (30%; e.g., winter ticks, brainworm, and liver flukes), bacterial infections (20%), accidents (3%), calving (2%) and other undetermined health issues (10%).The remainder was wolf-related (30%), with predisposing health conditions identified in nearly half of these moose.  Legal harvest accounted for 5% of moose deaths. During the same time period, we also necropsied anecdotal moose deaths (n=91) across northern Minnesota, which included vehicle or train collisions, sick, and found dead animals. Parelaphostrongylus tenuis was confirmed in 42% of these cases, which is nearly twice the rate of detection of this parasite as in the collared moose studied during the same time period. 

Monday January 28, 2019 3:20pm - 3:40pm
CENTER STREET ROOM D

Attendees (25)