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..-ii <br />LMfiet No. 102 <br />X channels. FOr <br />troylng or limit- <br />fa ter plants, hovK <br />ural plant growth <br />icks and other <br />e» to destroy <br />iterferlng with <br />a” in the same <br />lation of waters <br />L weedy areas than <br />;s. Sunfishy our <br />lually nests of <br />.n marshy areas in <br />other nutrient ele- <br />ilgae for the plant <br />too many water weeds <br />Is of water plants. <br />Water plants, ooth <br />sen and thereby <br />bic animal life. <br />rushes and reeds. <br />seeds and tubers <br />Lally valuable and <br />i excellent shelter <br />ay enjoy. The yel- <br />waterlilies all of <br />Eis ornamental as <br />e aquatic plants. <br />duces seeds that are <br />the economy of Minn< <br />OO million ia spent <br />e aquatic plants grow- <br />e protected for the <br />the values of these <br />requests for control <br />be glad to help by <br />ling of water weeds <br />use of chemicGds. <br />however, only herbi- <br />servation Department. <br />. 'I <br />A <br />.>■ <br />I. •* <br />I <br />. ^ <br />*■: i. <br />r'i- <br />i f \ k w W* * * * <br />OF HATURAL RESOURCES <br />David B. Zacpetlllo <br />Aquatic Blolonist <br />Ecological Services Section <br />wune 25# 1^75 <br />Phil Econoron ‘ . ^ <br />Fish and v;ildlife Pathologist <br />Ecological Services Section <br />Adleman Pond, Bloomington, Minnesota <br />The field and laboratory data supports <br />Ivian botullsa as the cause of the recent duck norUllty <br />at the above location. <br />ISiicRs tbaiL-acanf »M< <nr» are parti^^ serisi.vive. JtO-Diu^eaKS- or <br />t)tuns5lEn3aieiLicMer£^':^r^ er^ncerby ’Tia> grovSiTof oovui.ir.un U aUo * <br />shrinki.-.o water levels vmi^xpose rore sh^ <br />Oh whi S. wr anaer^- ^ay,‘ <br />carcass“S*<:Sves%o cerpetuatc fcctulinun poisoning. <br />fMd^r,^0p■^he” r-:-ains ingest the toxin an-i ^avc <br />bat as few as one or tvo naggots »" <br />arolint of batulinun toxin lethal for an <br />Dwklinss and other srall birds ray die froo the ninute <br />quantities of toxin released in tne water. <br />a,.-nrJinrlv i* is cruclal that all dead and dying ducks be <br />Keyed when "outbreaks of totulisr. occur .at these ocation, <br />K to prevent additional poisoning of waterfowl and <br />« • I • ^ . <br />V V V ^ W ^ i <br />shoreline birds. <br />PPE:lls <br />cci Oliver Jarvanpa <br />UiIlian Lcr.gley <br />iK. <br />w» » <br />QiPA^fyiENTT:^ <br />*; -i <br />V; r <br />rnoM <br />SUaiECT:M< <br />Pursuant <br />June 25, <br />laborator <br />din Minnea <br />The most <br />Health La <br />botulism <br />Laborator <br />In July vj <br />died. Si <br />to botuli <br />• # <br />The botui <br />Bloomingt <br />are, be inf <br />Higi*- temr <br />tdilch the <br />resulting <br />coupled V <br />proliferc <br />of toxin, <br />toxin pre <br />ies } <br />^the magge <br />Ducklings <br />of toxin <br />all dead <br />lime-pit <br />prevent i <br />There is <br />rences o <br />Many peoj <br />concentr <br />magnitud' <br />at this *