[Leica] Deer and Goose

[benedenia at gmail.com (Marty Deveney)]

What I mean is that the origin of CWD is unlikely to be manufactured
feeds; the prion appears unrelated to scrapie (which has been known
for hundreds of years), the vCJD/BSE prion, or human CJD.  It is one
of the few recent completely 'emergent' terrestrial wildlife diseases,
unrelated to all other known diseases of its type.  I face working
with emergent diseases in aquatic wildlife all the time, but it was
interesting to see that much of the animal health infrastructure built
to monitor AND MANAGE known diseases failed to detect the emergence of
a new disease or to manage its spread.  This paper:
http://www.oie.int/boutique/extrait/phchardonnet.pdf examines the
fundamental questions of the value of wildlife.  Although a lot of
people like the idea that we have wild animals, pristine places and
'wilderness' when it comes to acting (and paying) to protect and
manage them we often fall down.

Marty


On Sat, Apr 3, 2010 at 1:04 PM, Greg Lorenzo <gregj_lorenzo at hotmail.com> 
wrote:
>
> Marty Deveney writes:
>
>>
>> I'm well aware of CWD Greg, and the changes in the last 4 years - the
>> disease is quite slow moving for a disease of a mobile wild host; in
>> the 20 years or so since it was identified it hasn't spread very far
>> at all. This map:
>> http://www.cwd-info.org/index.php/fuseaction/about.map is up to date
>> at 3/10 and is based on a wide range of surveys tools, not just from
>> hunted deer.
>
> I agree that the above map is more up to date then the 1st one and I see 
> CWD is shown as having being found (state wide) in NY State on this map. 
> CWD (from memory) was 1st identified in NA more then 40 years ago (1968) 
> and first identified in the wild NY state deer population in 2002.
>
>> Also note that the prion that causes CWD is unrelated to those that
>> cause disease in humans or other animals, making it unlikely that it
>> was originally derived from consumption of human foods.
>> http://wildlife.state.co.us/NR/rdonlyres/BF3BE1C5-5835-47E3-8737-5AA566AA5245/0/EID_CDWPotTrans.pdf
>
> Not sure what you mean by 'human foods'? I was referring to man-made 
> feeds. The presumed origin of CWD (and BSE) in my neck of the woods is 
> sheep scrapie. Some feed companies until a few years ago were using animal 
> byproducts including sheep by-product in cattle feed (no longer legally 
> allowed here since the discovery of BSE in an Alberta cattle herd).
>
> CWD has been a very significant problem in farm raised Elk both in 
> Alberta, Saskatchewan and in the three northern US States to the south of 
> us. Most ranchers that were raising elk here have either eliminated their 
> herds or gone out of business.
>
>> This review, although from 2002, is very interesting:
>> http://www.oie.int/boutique/index.php?page=ficprod&id_prec=81&id_produit=619&lang=en&fichrech=1
>>
>> Marty
>
> Agree, interesting, esp. wrt CJD in humans.
>
> Greg Lorenzo
> Calgary, Canada
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