Contact the Wyoming Game And Fish Department At The Info Below To Give Input On The CWD Plan:
Zoom Meetings Are Scheduled For Thursday, July 16 @8:00 a.m. MST and Friday, July 17 @8:00 am. MST.
Our Take On CWD:
“How did he die?”, I asked my parents when a beloved uncle died in the 1980s.
“Oh, he died of ‘natural causes’,” they responded.
That sounded completely logical to me at the time. In fact, that was a logical response to the death of someone you knew until the last 20 years when our medical advances have increased exponentially. Now we are accustomed to knowing what, exactly, is ailing someone and what they die from. No more guessing or ignorant statements of “dying of natural causes”.
The question then arises with some medical conditions, let’s use cancer as an example, do we have more people getting cancer in our society today or are we better at diagnosing the disease and then potentially treating it? In addition, science has told us that the human body carries potential cancer-causing cells, yet not all of mankind shows signs of cancer nor dies from it.
This information has been rattling around in my brain with the recent resurgence of the Chronic Wasting Disease (CWD) topic. I worked through a similar scenario around the turn of the century while working as a biologist for a state game and fish agency. The scare of CWD was, and still is, a real concern (see Eastmans’ Hunting Journal article in the Oct/Nov issue 175), and during disease outbreaks it is natural to ask how we manage it, is it possible to treat it, is it a threat to the health of other wildlife, is it a threat to the health of humans, etc.
Questions I have never heard being asked regarding the topic of CWD currently nor 20 years ago, from either sportsmen or wildlife managers, are:
- Has CWD always existed and we are now better at identifying it with modern science?Are some cervids (deer, elk, etc.) potential carriers of the disease, yet never exhibit signs of the disease?
- Do some cervids exhibit signs of the disease and then recover from these symptoms (i.e. survival rates)?
- Are some cervids (deer, elk, etc.) potential carriers of the disease, yet never exhibit signs of the disease?
Do some cervids exhibit signs of the disease and then recover from these symptoms (i.e. survival rates)?
Recently we have heard lots of options on how states plan to deal with CWD, from culling herds on the winter range, to surveillance and lab testing, to reducing artificial concentrations of big game in certain areas, and the list goes on and on. Some of these ideas thrown out on social media are “fake news”, while some actually have credence.
Per the urging of our editorial staff, I took the time to go through both the Wyoming Game & Fish Department’s (WYGFD) CWD Management Plan (found by clicking here) and the Western Association of Fish & Wildlife Agencies’ (WAFWA) Recommendations for Adaptive Management of CWD in the West (found by clicking here).
These documents have pages and pages of recommendations along with potential action items on how to deal with CWD. Here are the listed items that may be of greatest interest to sportsmen and that have also caused alarm on social media lately:
WY CWD Management Plan BULLSEYES:
- Recommendation 7.3 (Pg. 122): Analyze & mine data for population and disease demographic information including male:female ratio, gender specific disease prevalence, survival rates, pre and post management.
- Recommendation 8.3 (Pg. 123): Investigate the relative importance of direct vs. indirect transmission of CWD prions
- Recommendation 8.11 (Pg. 124): We recommend WGFD collaborate on research on how environmental prion contamination correlates with disease prevalence and transmission.
- Recommendation 8.12 (Pg. 124): Conduct field studies to determine if artificial cervid aggregation is increasing CWD prevalence (e.g. underpasses/overpasses, water holes, feed grounds, etc).
WY CWD Management Plan MISSES:
- Recommendation 1.4 (Pg. 117): WGFD will work collaboratively with public stakeholder working groups to evaluate feeding practices of elk at feed grounds where possible to reduce risk and minimize negative impacts on elk population.
- This has already been implemented on the Elk Refuge in western Wyoming near Jackson
- Recommendation 5.2, Option 1 (Pg. 120) references the WAFWA document mentioned above with the provided link and states: Increase mature buck harvest in order to lower CWD prevalence from current levels by a percentage deemed appropriate through local processes and with consideration to the WAFWA Document.
- WAFWA Document reference:
- Harvest Management (page 7)
- Hypothesis 1: Increasing harvest on the segment of the population that is most likely to be CWD positive should result in reduced disease prevalence and subsequent transmission.
- Hypothesis 2: Because male deer harvested later in the season (post rut) appear more likely to be CWD positive, harvesting males later in the season will reduce prevalence.
- Hypothesis 3: If significant transmission occurs from animal-animal contact during breeding, then focusing harvest after the rut should remove animals sooner after infection and reduce transmission.
- Goal: Increase male harvest, bias harvest toward infected males, and/or shift or maintain timing of harvest to post rut. These manipulations can be applied either individually or in combination. Maintain female harvest at the same level during the assessment. The manipulation requires a significant increase over the current male harvest level. At minimum, agencies should consider an increase of at least 10 percentage points over the current buck harvest level (e.g., an increase from 20% to 30%). Modeling suggests a buck harvest level of ≥30% may be most effective to reduce prevalence. Multiple harvest levels need to be evaluated because the minimum level to effect a reduction in prevalence is unknown. (underlined and italicized for emphasis) Also, this strategy should be replicated at multiple levels of CWD prevalence to evaluate whether efficacy is dependent upon disease intensity. Therefore, management agencies should coordinate efforts in evaluating this strategy to allow for replication and comparison of efficacy in different populations.
- Prospective manipulations: Increase buck harvest
- Baseline treatment where prevalence is 10−20% is to increase harvest from < 20% to at least 30%.
- As feasible, evaluate >1 harvest level, particularly in the range of 30% to 50%.
- Ideally, male harvest of 30%, 40%, and 50% or more all should be evaluated.
- In areas of high prevalence or where otherwise desired to meet herd or population objectives, concurrent or independent assessment of doe harvest as a tool for CWD suppression may be warranted under guidelines similar to those above.
- Harvest Management (page 7)
- WAFWA Document reference:
- Recommendation 5.2, Option 2 (Pg. 120): Alter the timing of buck harvest in order to increase harvest of mature bucks. E.g. taking advantage of seasonal behaviors.
- Recommendation 5.2, Option 3 (Pg. 120): Reduce cervid populations to measurably decrease densities within an area of concern (e.g. herd unit, hunt area, portion of a hunt area). Maintain reduced densities for the appropriate amount of time to adequately evaluate effects on CWD (i.e. greater than 10 years). This may require a sustained increase in female harvest. Density and harvest goals must be clearly articulated and developed with public input prior to and during implementation.
- Recommendation 5.2, Option 5 (Pg. 120): Utilize a robust monitoring program to identify areas with a high density of CWD positive cervids (i.e. “hot spots”). Develop and implement lethal removal strategies to maximize removal of cervids (male and female) around locations of known “hot spots”, including but not limited to hunter harvest (preferred), targeted agency removal, and other designated methods.
- Recommendation 5.4 (Pg. 121): WGFD will consider CWD in the adjustment of harvest and population objectives and associated management strategies to manage cervid numbers (male & female) in areas of concern.
- Recommendation 5.8 (Pg. 121): We recommend WGFD cooperate with landowners to increase hunter access for CWD management.
- Recommendation 6.2 (Pg. 122): Consider issuing licenses and associated hunting seasons in relation to migratory herds that are intended to specifically address CWD management actions.
In my opinion, we don’t know anywhere near enough about CWD to go forward with the herd culling that is happening in some states and proposed in others. I like the recommendations of learning more on the disease (if possible) before we take drastic measures and kill deer during the rut or post-rut. In the middle of a mighty battle on protecting migration corridors across the West, this seems like an epicly bad time to be talking about killing deer on the winter range (see the awareness video we produced on this topic here).
What say you fellow sportsmen? Are the recommendations in these plans on the mark or way off base?
53 comments
It appears our wildlife biologist community is throwing a Hail Mary at the problem. Our wildlife herds suffer untold damage possibly irreparable damage by holding their value only to the dollar. Where are the men and women with the burning commitment to doing the right thing for the betterment of mankind And the wildlife we love and enjoy?
If the state of Wyoming would look closer at the data the state of Colorado has on unit 9 it may shine some light on what culling accomplishes.Seems to me I heard it had little effect but I am probably wrong. Just so you know CWD was first found by the late Beth Williams in the latter 1980s and there is much to be learned from Colorado.
I’m of the school of thought that CWD has been around for a long time, possibly forever, and we just learned what it is and how to test for it. I also believe there is nothing that can be done, or that anything should be done to try and stop it from spreading. It’s already spread or exists almost everywhere. Killing off herds of animals is the most horrible idea I have heard of. If we let them kill them all, then they are definitely Dead. Let it run its course, some may die, most wont! Dont buy into this crap, that we need to kill them all. To do what? To stop the spread of something that is already there?
The more alarming idea is that the state game departments are more then willing to slaughter their people wildlife. Is it a growing trend towards big game management without the use of recreational hunting? Absolutely! With states unknowingly voting to replace hunter dollars with lotteries and state taxes and fees we have given up the one thing that helped hunters hold some power over the decision making process. At the end of the day the anti hunting agenda is to stop the hunting and killing of animals by humans for recreational purposes. By taking the responsibility for paying for wildlife management out of the hunters hands…they are winning. This is just another step in the direction to eliminate a NEED to hunt.
Good Luck!
Patrick Montgomery
I’m just a eastern hick{not because I want to be} but I’ll stick with Mike Eastman on this! Dave Junk-Ohio
CWD is for real and getting worse. In my county in SD the disease has been devastating. The CWD prion is not alive and lies viable in the soil for years. How do you kill something (prions) that is not alive? You can start by following the science and rejecting all politics. Want some easy low hanging fruit that will reduce CWD? Well anything that concentrates deer increases CWD transmission, like baiting AND food plots. Many States banned baiting but not food plots…why?…politics and money. Food plots grow big deer and generate big lease dollars so money and politics win and deer herd health looses Science doesn’t have all the answers…it’s an imperfect process that includes success and failures. But it beats politics and science deniers who through delay, tradition, fear and mismanagement made the situation worse. Hunters should reject any proposal that smells of politics. All proposals should have a solid basis in fact and confirmable data.
I think the author could have educated himself a lot more before writing this article. All of his questions have scientific answers. CWD is new. It’s spreading. And yes, animals can carry/host/spread the disease without showing symptoms themselves. The prions the carry that disease live in the soil and cannot be killed by mechanical methods. Watch the recent Joe Rogan podcast with the disease investigator. I don’t want politicians to kill deer either, I eat venison every week of the year and don’t plan to stop. But we need to follow the science. We politicians, sportsman and authors should use our soapbox to spread an informed message and keep our opinions to ourselves.
Dip Spit, here is some info for you to check out. CWD isn’t new. The earliest case is in 1967 and I’m sure it existed before that. This is the CWD Alliance website with the timeline: http://cwd-info.org/timeline/
You are right, we should follow the SCIENCE, which requires more info before making a drastic decision like culling our dwindling mule deer herds.
In science, you develop a hypothesis and use research to try and disprove the hypothesis. If you cannot disprove it, then it stands as scientific fact. This is the basis of the scientific method and isn’t a new concept.
Brandon suggests some logical data mining that sounds extremely viable to increase the understanding of cause and effect. Strategic culling is 1 tool, but in and of itself it should be done according to a verifiable metric. Other environmental factors play a bigger role than the transmission itself.
How many animals have cwd but die from another cause first such as hunting, predation, vehicles, etc? So if left to their natural course they would have died of cwd, think of how understated all cwd statistics could be for this reason.
Is culling the answer? Not sure I guess but I definitely think the topic needs more funding and research and it needs to be done ASAP.
Good article Brandon
Why in the world does every State and Province act like this is something new and they have to come up with some ingenious but stupid way to deal with it?! The only thing the science will say is kill all the deer to save all the deer! Or at least greatly lower the population to slow the spread, and it spreads anyway. Colorado has had it 50-60+ yrs, Saskatchewan for 30-40+ yrs, if it was so deadly the mule deer would be wiped out of both of those fantastic mule deer hunting meccas! The only thing that wipes out the mule deer in CWD areas is wildlife biologists wanting to kill them all!!
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