Chronic Wasting Disease (CWD) remains an inscrutable wildlife plague, confounding even seasoned experts, as it inflicts excruciating and protracted suffering on nearly every host it infiltrates.
Hunters, deeply rooted in their traditions, often shy away from receiving or acknowledging bad news. It’s easier to perpetuate the familiar deer camp rituals, maintain trophy-buck management programs, or dismiss CWD research as “junk science” than confront the looming reality that this disease could reshape deer hunting traditions in North America. Moreover, the specter of CWD potentially affecting human health adds another layer of concern.
This speculative narrative sheds light on the unspoken thoughts of CWD researchers, offering a glimpse into where the research is heading, the considerable challenges ahead, and why the implications should command our attention.
The Puzzling Nature of CWD
CWD’s scientific intricacies make it challenging to comprehend and combat. The elusive nature of CWD, caused by a misfolded protein known as a prion, makes detection only possible post-mortem, adding a layer of complexity to studying the disease.
While efforts to detect CWD in live animals have progressed, especially in controlled environments like commercial deer farms, obtaining samples from wild deer remains a formidable challenge. The prospect of efficiently and cost-effectively collecting samples from wild populations remains distant, hindering accurate assessments of infection rates.
Are We Culling the Key to Resistance?
The practical challenge of recognizing diseased deer raises concerns about state game agencies’ responses to CWD. Eradication policies, as witnessed in Wisconsin, might inadvertently eliminate healthy deer, potentially possessing natural resistance to CWD.
The captive deer industry has made strides in mapping and sequencing deer genotypes, identifying potential genetic mutations that confer resistance. However, applying this knowledge to wild populations remains an enigma, leaving the risk of inadvertently removing crucially resistant individuals during culling operations.
As CWD continues to affect deer and elk herds, some populations may face annihilation. In Wyoming and Colorado, isolated herds experience a 20% annual mortality rate due to CWD-related causes. Struggling populations may see restricted human harvests, impacting the age structure of deer, and potentially leading hunters to adjust their expectations and be content with younger game.
Researchers contemplate a slow recovery process, with ecological modeling suggesting a 50 to 100-year timeline for herds to rebuild with genetically resistant animals. The potential decline of deer populations within our lifetimes prompts a shift in hunting expectations, with pronghorns becoming a more prevalent target.
The Costly Management Challenge
State agencies allocate millions for CWD monitoring, testing, and public information campaigns, reflecting the economic importance of the $23 billion deer-hunting industry. Despite the substantial funding, research projects crucial for understanding and managing CWD face delays due to resource constraints. The slow pace of research exacerbates the dynamic spread of CWD, leaving gaps in our understanding and response strategies.
The question of whether CWD can infect humans remains unanswered. Public health advisories emphasize precautions like avoiding sick deer, wearing protective gear, and testing meat for CWD. While research injects prions from infected deer into various animals, the potential for cross-species transmission remains inconclusive. The uncertainty surrounding CWD has had a tangible impact on food banks, with concerns about potentially infected venison leading to a decline in donations to programs like Hunters For The Hungry.
Carcass Disposal: A Hunter’s Responsibility
Amidst the uncertainty and disagreements in CWD management, researchers unanimously stress the crucial role hunters play in containing the disease. Improper carcass disposal, particularly during transportation, poses a significant risk. Hunters must adhere to state-specific rules, avoid moving brain or nervous tissue, and dispose of carcasses in approved landfills. CWD containment ultimately relies on responsible hunting practices.
CWD technicians, witnessing the daily progression of the disease, draw a poignant parallel to watching a loved one with Alzheimer’s transform into a mere ghost. The suffering experienced by deer afflicted with CWD remains a haunting reality, highlighting the urgency of comprehensive research, responsible hunting practices, and public awareness to mitigate the impacts of this insidious wildlife plague.