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wune ZSi 1^75 <br />c <br />ids <br />ents <br />gots <br />VO <br />be <br />itions <br />id <br />I >-•'■ <br />'ft <br />•r <br />i] <br />Ptf*ARTiyffMTT!^lQ]r NATURAL RtiSOURCES <br />% <br />'■!J I <br />» t <br />V: V <br />i ( <br />f <br />Roger Holmes* Chief <br />Wildlife Section <br />DATE:August 24, 197: <br />[4L <br />FROM Phil Economon <br />Fish and Wildlife Pathologist <br />Ecological Services Section <br />SUBJECT:Metro Duck Deaths from Avian Botulism <br />Pursuant to my ®J'3“heen'*corroborated*^y**two”add^{r.:UriU‘i.*5ii: as:°s 'sx,irii srsrfoju .m. . <br />in Minneapo'.is area lakes <br />Tha most recent ”Msconsin^ earlier^verification cf <br />by ?»e^s!rof Minnesota Veterinary Diagnostxc <br />Laboratories. <br />■4 <br />died?^^in=r?Senrat*$tLrilo^atSxfionffdLrdeat^^^ <br />to botulism have occurred. <br />■ j <br />• •M?gt o?! 11^ f le iriridinl <br />being ’ in'/es$j.gfl^.ed. <br />and reading _shbrel^_esi^ult^rtlgh temperatures and levels•Shlch the. bacteria of avxan botsli.|m,^ti-y^^er^ ,yg_^^^which the. bacteria or avian_octy^x,|u. - <br />iSsunlKT^-onr^ “LS IdH! conditions for theresulting_ from UK'decomposition conditions for the <br />^liferation of the °!®tucks’and eialorltion of <br />the .outbreakbf toxin. The rapid oecomposi^ion oi u.au ^ outbreak. <br />toxin produced in these carcasses P®j;P®e toxin and <br />Mag§9ts feeding on thebe duck^remains * ooisoned from <br />stud!xuc?ll hlvf sLSn tStfheaUhy dScks ’may^^become poisoned from eating <br />ha maggots from dead ducks a and in turn die^ - - --- -- <br />Ducklings and other small birds may die from the minute qu _ <br />of toxin released in the water. Accordingly, it is <br />all dead and dying ducks be promptly destroyed by incineration or <br />lime-pit burial v;henever outbreaks of botulism occur, in order to <br />prevent secondary poisoning of waterfowl. <br />There is no human health threat known or postulated from the occu­ <br />rences oi avian. Type C bCculism in v/ateriOv<l« <br />^ A <br />r* ' t ■ <br />F«g€ Two <br />Roger Holm <br />August 24, <br />i H <br />^»i-. ♦•iV> A • ♦ • * <br />V' <br />k, <br />t*- <br />V--.' (*■ <br />if ^ <br />ii <br />• 'f- <br />m <br />Wb ere con <br />have upon <br />their fall <br />have large <br />in contact <br />The latter <br />transmitte <br />PPE:ll8 <br />ee: Mike <br />Olive <br />Rober <br />Rober <br />Attachment