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Bear Hair Traps Reveal Population Secrets
4 Jul
Summary
- Biologists use barbed wire corrals to collect bear hair for DNA analysis.
- Hair samples help estimate black bear population density in western Washington.
- Data informs hunting regulations and knowledge gaps about the species.
Wildlife biologists in western Washington are employing a unique strategy to monitor the region's black bear population. This method involves setting up simple corrals constructed with barbed wire and baited with a rancid mixture of cattle blood and fish oil. As bears investigate the scent, they inadvertently snag hair on the wire, leaving behind valuable genetic material for analysis.
These collected hair samples undergo DNA analysis to identify individual bears, allowing researchers to estimate population density. This data is vital for the Washington Department of Fish and Wildlife, influencing decisions on black bear hunting regulations and expanding understanding of the species' presence. Since 2019, the agency has collected thousands of samples across various study areas.
The current study in game management unit 121, located in western Stevens County, is the first of its kind in this specific area. Biologists Annemarie Prince and Healani Johnson are monitoring several corrals, expecting to compare findings with previous studies in adjacent regions. This ongoing effort contributes significantly to the state's broader initiative to map black bear densities.
