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DNR study: chronic wasting disease cuts adult deer survival and suppresses population growth at high prevalence
Summary
An applied-science study that collared and monitored more than 1,000 deer in southwest Wisconsin found CWD-positive adult females have sharply lower annual survival than uninfected does, and modeled population growth falls below replacement when CWD prevalence exceeds about 29% in the study area.
Department of Natural Resources researchers presented results from a multi‑year Southwest Wisconsin study showing chronic wasting disease (CWD) substantially reduces adult deer survival and can suppress population growth where prevalence is high.
Dr. Dan Storm (ungulate research scientist, Office of Applied Science) described the study approach: researchers captured and GPS‑collared 766 adult deer and more than 300 newborn fawns beginning in 2020, collected a live rectal biopsy for CWD testing at capture, and monitored mortalities and causes. Using…
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