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Proceedings of the Helminthological Society of Washington 36(1) 1969

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Proceedings of the Helminthological Society of Washington 36(1) 1969 Volume 36 January 1969 /Nurrtbef V PROCEEDINGS The Helmintholoafcal Society -•. "- ' • "'x'"' '""•• ' '; ' • ' ' '' :':-' ;' ' on . x x L V ^ semiannual /ouriid/V-of rfesearcli< devoted fo : : ^ / ^vHe/minflio/dgy and dlf branches of Parasifo/og'" y" .Supported ir^paft by the \ ''••'•• { -^. n H.,Rahspm MeiiiorJal Try^t Fu,ricl /\.^'-. /'/ :^tt^ Subscription ^7/OQ<ci Volume; Fpr9Jgri/l$7.50l ^ • . - -. r V<'-";"-'^\-.-' CONTENTS ^|^f%S ;ABRAM, JAMES B. , Some Gastrointestinal' Helminths of Ondatra zihethicus , . ,; .Linnaeus, tlie Muskrat in Maryland -,...--------:_-..--..--.--.._..-A----->------l-- ---.---.rr ,93 -CABLE, ;R. MJ, AND HADAR ISSEROFF^ VA Protandrotis Uaplopqrid Cercaria, r , Probably Jthe Larva of SaccocQelid.ides sogandanqsi Lumsden, 1963 1..^. COI.GLAZIER, M. L., K. C. KATES/kNb F, D. ENZIE. \. Activity of , ,'V-Tetfainisole, Thiabendazble, and Purified Fin^ Particle Thenothiazine, .-.':Against Experimental/Infections of Haernojichus contorUis--JanA Triclio- stroiigylus Speeies in Sheep ,Liivir— .:-—1^ l-.,r.__...-.i-.J.«__:.: -4^212 68 CROLL, N./A^ ANDLTD, R. \ViGLjERcmo. Osmpregulatioh arid the Uptilce pf \;:; > ^/. Ions in a Marine Nematode ..^^.^.: ....::..„-.-../......^^.,^...^..'r'r-l.^.....L~^.'.. •;"-!' DORAN, DAVID J., AND JO&N M.^VEiTteRriiNG. Infectiyity of Two Species of ' • r J Poultry Coccidia After Freezing, arid Storage in. Liquid JNfitrogen Vapor\:l._- r30 DORAN;) DAVID ,J.y AND JOHN M. VErrteRirNTG. Influence of Storage Period;on; /' Excystation; and i Development in Cell Culture bf Sporozoites of Eimeria '...-' ••£ - fneleOfgrimitis Tyzzeir, 1929^. -.^--^—^.. .--l.u--.-Z2 ^_ii.r.—....^..^.-:_^lL-. 'f /,,;- -X;K ;/; "';"^ vv ;;'K r- - / -'(Continued on BackCover),' - J- '.: .^,;/ \ ... .r -''/:> '•#• Copyright © 2011, The Helminthological Society of Washington i'l Vx.: -;^: • i THE HEI^INTHOLOGJCAL SOCIETY OF WASHINGTON : ^ ' ' ".' ''S ' •' ' ' -~ ' ' -J' '' / ' ' • . ' '~~L.' ' ' "'• -~~' "I •-•' -'""' •' ''I *'_- .'' -' "• ^ '- / i -;'.'.;"r'••••;• THE SOCIETY meets once a mpriUi from October dirough May for the presentation, and T ^/ •;' discussion'pf papers in .any \and all branches of parasitology or "related .sciences. All .interested f /_r persons are invited to attend. ;J ' //' "/' . ' •.""'-"-,'; / :\, x ; ''Persons interested^in inembership in die HelrriintliQlogical Society of.;Was3bin"gton.i may obtain Vir vapplicatibn blanks from the Gorresponding gecretalry-Treasurer^ Miss Edna ,/M. Bulirer, Belts-- /, N '; ville Parasitplogidal Laboratory, Agricultural Research Center, Beltsville, Maryland, 20705.. A i ^ year's subscription to,, die Proceedings is^included in die1 annual dues ($6:00).v ;"/ --/ OFFICERS OF7THE SOCIETY FOR Ptesident:^ALA.N C. PIPKIN : — V .; . .f r , .-;'. *+. • V .. '<£ ,.; . .1.^ Vice President: A. JAMES HALEY . *, ), ' • .;• . ^V*:'-•'•;:M;.;,;,v; ! -y Corresponding Seer•etary-Treamrer: EDNA M; BUHRER -^ ? ^--\1 -. - '/1. Associate Treasurer; LLOYD E. ROZEBOOM ;" ;f i ;" ^/" :Assistant Correspondin^Seeretanj-Treasiirer:, HALSEY H. VEGQRS {. ^ \ ;r ^; Recording Secretary: E, J>>L;i SOUL'SBY ' - >v ^ ; - >* ^ ; " -V :' Librarian: JUDIT^ M. HUMPHREY .(1962- ) ,' x- "^ \:\4 ^ 1'; :; Afc/iiui^:,;WXLLARD W/BECKLUND (1967- ) ^ ] .V^'--'^/^ Representative to the Washington Academy of Sciences: AtlREL O.~F9§TER (1965- , ), Representative to the American Society \of Parasitologists: i ! ^'l ; > C , ' :\..^-.;....-,...-' r '; , M,V , GEORGE ^l LUTTERMOSER (1969- Execittive'Gomniittee Members-at-Large: HARLEY^ G. SHEFFIELE^ 1869 ';"A." ', '/! "\vC-.<^ :/ s, ',-;"' / .-'.' "'.' 'r' GILBERT F.-OT^TO, 1970 -'gv. / .'^v^^-' "THE PROCEEDINGS <OF THE HELMINTH0LOGICAL OF WASHINGTON . _• - ^ _ ,. .- - : .. s- : - • - - • -. • -. THE PROCEEDINGS are published semiannually at Lawrence, /.Kansas by die Helmintho- Ipgical 'Society of Washington, "".papers, need not: be '.presented at a meeting to be /published/ in'jthe .Proceedirigs. / However, non-members may publish in the Proceedings /only , if Contribute die full cost pf pi\blicatiohv '\-.\ - ,' , «• • should be sent:te ^ the EjDITOR, /Francis \Gk Tromba.; Beltsville Parasito- logic(al Labordtory-, Agricultural Research Center, Belfsville, Maryland 20705. Manuscripts must be typewritten, double i spaced, apd un Nf inished form. Only the, ribbon /copy will /be accepted for publicatiori; ; it is hce'epted w,ith die understanding that it ^'ill be published only 'in the Proceedings, . \ "; '-. , •'--''/-' y, .•;.'. /^ ;. ',/ ' • ;, '!• \:\ V-: '•"'-./ •• i - REPRlMTS may (be Ordered from the 'PRINTER J at 'die same' time, the corrected proof is retiihiedj'io/die EMTOR./" , 'I ^. ; ^ ^'"'^ -• '\:^^^ "'•'"/• . ! •-("'- - /BACK VOLUMES of the Proceedings are .available; /Inquiries /concerning back volumes and current isubscriptions, .should be directed to: Hehri^thplogical Society, of "Washington, c^p Allen Press, -Inc., ^.041 Newjilampshire St., Lawrence, 'I|ansas ;66044, U;S.A. ; BUSINESS OFFICE. The Sopety^s 'business office is at; , Lawrence,. Kansas'. 'All/inquiries^ concerning subscriptions , or back issues and -all /payments. "for dues, subscriptions, and bapk , issues should be addressed vto- Hejniindiplogical Society ' of 'Wasliihgton^ c/o Allen-Press, Inc., /1041 New Hampshire St., tawrencef Kansas 66044, '. tl.'SiA. ',-: ' ^ , /-' :,,-„/ ' ' '' ' ' ' '' • • '- ' •' s - ' ^PITORIAL! BOARD> ^ I FRANCIS G. TROMBA/ Editor^ WILBUR L. BULLOCK -ALLEN iMcINTOSH ' V,:/XA MAY BELLE ,CHITWOOD WILLIAM R. NICKLE i JACOB H. FISCHTHAL" .GILBERT F. OTTO :\Y J. RASKI: si ' WILLIAM J. HARGIS, JR.: GLENN L. :HOFFMAN/ l"i HARLEY G^ SHEFFIELD , LOREN R. KRUSBERG V ARISEN .C.^IRJAN-" £.!. JOHN T.;LUCKER -" )' / PAUL P. WEINSTEIN .- Copyright © 2011, The Helminthological Society of Washington PROCEEDINGS OF THE HELMINTHOLOGICAL SOCIETY OF WASHINGTON VOLUME 36 JANUARY 1969 NUMBER 1 Osmoregulation and the Uptake of Ions in a Marine Nematode N. A. CROLL1 AND D. R. VlGLIERCHIO Department of Nematology, University of California, Davis, California Past studies have demonstrated that if cer- conditions the worms remained in an appar- tain animal-parasitic, plant-parasitic and free- ently good state for up to 6 weeks. All experi- living nematodes are placed in hypertonic ments were conducted on adult worms from solutions they lose water causing a reduction this supply at 25 C. in volume (Stephenson, 1942; Osche, 1952; Through water transfer nematodes become Lee, 1960; Wallace and Greet, 1964; Anya, greatly reduced in size and distended in hyper- 1966; and Myers, 1966). In most cases osmo- tonic and hypotonic solutions respectively. The regulation has then occurred enabling the nematode response to osmotic solutions and nematodes to regain their original size. Sim- osmoregulation was measurable by changes in ilarly when placed in hypotonic media there its physical dimensions. The distance from the is an increase in volume and sometimes a re- oesophago—intestinal junction to the anterior turn to normal body size (Stephenson, 1942; tip was found to be a convenient sensitive Anya, 1966; and Myers, 1966). This com- parameter. In preliminary experimentation it munication complements these observations by was found that this measurement was in direct characterizing osmoregulatioii and uptake of proportion to changes in width and overall ions in the marine nematode—Deontostoma length. (= Thoracostoma) calif ornicum. Each worm was placed in a perspex groove Reviewing the data on osmoregulatory mech- containing seawater, held by a coverglass and anisms in invertebrates, Beadle (1957) was measured with an ocular micrometer. The able to say that "There is no convincing evi- nematodes then were placed in test solution dence as yet that osmotic gradients between in 2 cm diameter glass cells in covered Petri body fluid and external medium are due in dishes. A little tap water was placed in each any degree to the active transport of water." Petri dish to ensure a high humidity while It is, therefore, with the movements of ions allowing free gaseous exchange. The nema- that osmoregulation is achieved and the ability todes became inactive or less active during to osmoregulate will depend on the ability to the experiments. take up and lose ions. Frequently, exosmosis proceeded until con- Experimental Methods and Materials tortion and crumpling of the worms occurred and at these extremities of water loss, volume Deontostoma calif ornicum was collected changes were not truly reflected by length from the holdfasts of Laminaria digitata and measurements. These excessive losses were Egregria laevigata at Dillon Beach, California, at extreme low water spring tide. D. califor- accommodated within 15 min and the usual nicum was removed from the holdfasts and body shape was recovered. The first reliable stored in seawater on gauze at 5 C as this was measurement of water loss (ME) was on the found to reduce "clumping." The seawater was recovery curve R which approximated to changed at weekly intervals, and under these linearity in all but the two cases described below. T was the time taken to regain original 1 Fulbright Scholar, permanent address: Department of (seawater) size (Fig. 1). The rate of recovery Zoology and Applied Entomology, Imperial College, Uni- versity of London. was expressed as ME/T or tan «°. Copyright © 2011, The Helminthological Society of Washington PROCEEDINGS OF THE HELMINTHOLOGICAL SOCIETY Table 1. Osmotic regulation of Deontostoma cali- fornicum following immersion in various hypertonic media. PERCENTAGE CHANGE IN LENGTH Compound Regulation-;- Compound
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