02-07-1977 Planning Packet - Laserfiche WebLink

Home Browse Search

id ned cks (d the cks in sum- ent t*f f that rmfut s and '.gton. botul- itures shore 's fish dead id dis- ne-pit from ecoH' ;s by ■aging ivhere y .#•• :| r f i. « Ml i rM hu I MIL in / )( By JOE HENNESSY I,- No shore birds were affected b^^i^id there is no danger to humans liMnaeapolis Star Outdoor Writer I the outbreak. He said that when the\ from the outbreak. water is foul, shore birds move to undreds_ of wild ducks- erell^ither feeding grounds, but the dyinf. on Twia_Dtics gtsii £onii$ and lakes, and part of the reason is that the juhfic h'as~Been feeding thm, a state p^Qiogis t sald'yes- lerday,__ Many deaths are caused by bo tulism. contracted by the birds in gesting the toxin with contamina ted food. Concentrating t.*:e ducks greases the cfiances ot infection. ks sru f f eT I n g from botulism, show neck paralysis and flop around helole^^lv. _ ucks remain because of the artifi tal feeding. Economon said he *>uld stop short of saying the Li.Js never \ should be fed. But he said the abundance of ducks on smaller lakes, v/hich now are quitewarni. definitely is a factor in the death.s. He said that without the feeding — thTTfu^s would seek .cleaier.wa- "Unless humans were to eat the same insects and vegetation or drink the \s*ater, they would not get the same type of botulism." Krosch said. Samples of blood from the birds also were sent to the Nat:or.al Fish and Wildlife Labratory in Maryland and to the University of Wisconsin. Severe outbreaks of b*3luI*s.Ti in the North Dakota arid South Dnko- ta and on ther west coast in recent Howard Krosen, ‘^nheaeparP yers resulted in t.he deaths of t«.n$ ment's ecological services section of thousands of duck.s. ilism was confirmed this week In at least some of the birds ^ ^ , the Minneapolis Minnesota veterinary diagnostic thurs., July 29, 1976 | Biateratories.51/TD THE FIRST outbreak about 3 weeks ago was at Adelman Pond in Bloomington, where 110 dead or dying ducks were picked up. Since then, ducks have been coJiected at Washburn Pond, in Bloomington and at Lake Cainoun. Weed-cutting crews have been picking up ducks elsewhere in the metropolitan area. Dead ducks not taken to the lab oratories for testing have been burned at Bloomington ’s diseased elm-tree site. / •• / VL J * ' . V / "High temperatures and reced ing shorelines result in a conditicn in which the o.-gar:;;ms (of botul ism) thrive," said Econom on. DNR fish and wiidlii'e patnoioVTJT "Low oxygen and hea*.y vegetation cause exiri’me pro!::er.ii:cri (of bo tulism) when the t c .m p e r a i u r e reaches 03 degrees. "The study sho'Acd that one or two imyjtots fccdii.'.» on the dead ducks concentrate th« toxin enough to kill a healthy adult duvk." he f said. » • s 4 \ t I i i ) "Concentrating the ducks by fecdTng ThbW ha-»-aan:.jkcit&!y7H:i- cciit^ on ■the cutbrmrttt^ -EccTrmaon X, V ♦ • ‘V 5.^ said. "It uTTrac’s iV.rrn !ro:n ’o*b.?r pla<:»-s. I rihew •?.:• i- >! iriVwitl.'jl i.’-ui5“ic inr*n:. iiui-’w/.'; •hor.-cir- cuits n'tlVii.aJ i ■• •• 4. • 1. ■* . R ’ hi. 4 it.f / i i V- /' I r * #' % 9i f ' 4 • ^ iT'* • ' . ■ It ^ • ‘i. f ^‘.1 ' : 'r- t * ‘i r t /• * * 4* 0 ' • /y- ‘m: • •. •d ♦ I f f :» - -. V . f - •.* i I * i •I • .- / ^ ‘' >*v I: Vvir'A;,.? • ^ ' *. 1* : •* • •,*> *f. . ^ • •.. • . -a ' X • ♦ ' • ••• " ' ^ I - ■ f' f ..‘.-it ^ J ^ i I •• .r . ■ I-'f i. ;'iV- ^ V 4 . <%■.' • ' * • % ■■ ■i ; f ■ i. ».a.# « tt::*v A. ' V • V t. V f • • •