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The Helminthological Society of Washinqton I . Volume 46 1979 Number 2 PROCEEDINGS The Helminthological Society %Hi.-s'^ k •''"v-'.'."'/..^Vi-":W-• — • '.'V ' ;>~>: vf-; • ' ' / '••-!' . • '.' -V- o<•' fA • WashinQto" , ' •- V ' ,• -. " ' <- < 'y' : n I •;.T'''-;«-''•••.'/ v''.•'••/••'; •;•-.-•• : ' . -•" 3 •/"-:•-:•-• ..,!>.>>, • >; A semiannual: journal Jof research devoted to Helminthology and a// branches of Paras/fo/ogy ,I ^Supported in part by<the / ^ ^ ;>"' JBrayton H. Ransom^Memorial TrustJiund /^ v ''•',''•'•- '-- ^ I/ •'/"! '' " '''-'• ' • '' * ' •/ -"."'• Subscription $i;iB.OO a Volume; foreign, $1 ?1QO /' rv 'I, > ->\ ., W./JR. Polypocephalus sp. (CeModa; Lecanieephalidae): ADescrip- / ^xtion, of .Tentaculo-PJerocercoids .'from Bay Scallops of the Northeastern Gulf ( ,:. ••-,' X)f Mexico^-— u-':..-., ____ :-i>-.— /— ,-v-— -— ;---- ^i--l-L4^,- _____ —.—.;—— -.u <165 r CAREER, GEORGE^ J.^ANDKENNETI^: C, CORKUM. 'Life jpycle (Studies of Three Di- .:•';' genetic; Trpmatodes, Including /Descriptions of Two New' Species (Digenea: ' r vCryptpgonirnidae) ,^.: _____ --—cr? ..... ______ v-^---^---<lw--t->-7----^--'r-- ___ ~Lf. \8 . ; HAXHA WAY, RONALD P, The Morphology of Crystalline Inclusions in, Primary Qo: ^ - r ',{••' cylesfafiAspidogaJter conchicola von Baer,;1827((Trematoda: A^pidobpthria)— : ' 201 HAYUNGA, EUGENE ,G. (The Structure and Function of the GlaJids1! of .. Three .Carypphyllid T;ape\y,orms_Jr-_-_.--_--.r-_t_:_.l..r ____ ^._ ______ ^..—.^— —....: rJ7l ' KAYT0N , ROBERT J . , PELANE C. I^RITSKY, AND RICHARD C. TbaiAS. Rhabdochona /• ;A ; ycfitostomi sp. n. (Nematoifja: Rhaibdochonidae)"from the-Intestine of Catdstomusi ' 'i -<•'• ' spp.XGatostpmjdae)— ^ilL.^—:-;..-L_y— 1..:^^-_— -L.iv'-- ___ -—- ?~~ -~—:- — -^— '— -,--- X '--224- -: /McLoUGHON, D. K. AND M:JB. CHUTE: \ tenellq.in Chickens:, Resistance to y a Mixture .of Suifadimethoxine and'Ormetpprim (Rofenaid) ,___ _ ... .. ......... ^...j.. , 265 , M, C.-AND RV A;. KHAN. Taxonomy, Biology, and Occurrence of Some " Manhe>Lee^ches in 'Newfoundland Waters-i-^-\---il.^ , R. T., R; A.irSiDNER AI'JP F> J. ETGES. Sphaeridiotrema echinosaurerise :; n. ;(TrLematoda: Psiiostomidae) fro^EchinosaurahorriddhomdainEcua- v^'^^^v^^^P^1^ L / !'!Tv : ;..XGonittfi«ed on 'Back -Cover) ~ ' / •'' Copyright © 2011, The Helminthological Society of Washington , ,,, • - -, Y THE HELMINTHOLOGICAL SOCIETY OF WASHINGTON JH£ SOCIETY meets once a month from October through May for the presentation and discussion ofpapers in any and all branches of parasitology or related sciences.! All interested persons are invited to attend. " /. .- Persons interes.ted in membership in the Helminthdlogical Society of Washington may obtain ap- plication blanks from the Recording Secretary, Nancy D. Pacheco, Immunoparasitology Department, Naval Medical Research Institute, Bethesda, Maryland 20014. A year's subscription to the Proceed- ings is included in the annual dues ($12.00). vl ^, \- ; t .'• - '• ' "•' \ 'v.y i ;• ' ,—• : -~i: •' I"'.. • ,-^' *,,'•.' ' ••• "• ?i - *?''• , , ' V k ''V" \ '•'• ". -'. -\ ' '] J N : i ' OFFICERS OF THE SOCIETY FOR 1979 > ,{r , • ' - •• /• . - i & ';•;::•-• \ RONALD PAYER * ' -, -- '-^'•- IfTC/'K;', :\ : ^ •-. r \ V ''1- .'^ ' Vice President: JAMES C. BURKE i; ! : r^ ^ v ' -^ , : v \ Secretary-Treasurer. J.1 RALPH LICHTENFELS " ^''- s^Sy Assistant Corresponding Secretary-Treasurer: ANTHONY J. JOHNSON ' < ' \ Secretary: NANCY D. PACHECO \1'1/ !^ / ' T/ Archivist: AUREL ©. FOSTER ( 1979-^ ^ ' -^ '. ''',' ,!;.'/ ^,>'| -\ t,Cf:." '^V^ Custodian of Back Issues.-. MILORD N. LUNDE ' Representative torfie ^ashinglon ^Academy of Sciences:; ROBERT S.'ISENSTEIN (197,6f ^£ Representative to'the American Society of Parasitologists: HARRY .HERLICH (1975- ) V Executive' Committee Members-at-Large:,' JEFFERY 1W. BIER, '1979 " ;' "";v " y<;, -f'K\ GERHARDT A. SCHAD, J980 RAL'PH ECKERLIN, 1980, '•' jmmediate^Past "President: HARLEY;iG. •'/'<' •'•''/.' .-] ' ''..'' ",/:'' /',•'•' • • ;' • |-/-'' "•.>,/.' .'' ;1 ''"'':•/' »' . i :. 'vj' c". if}" i"^?'i\/'. '•'•'/. n THE)PROCEED»N(SS ,OP tHE HEtMINTHOLOGICAU SOblETY OF WASHINGtdN / ;,THE f-ROCEEDljNGvS are published 'semiarinually at Lawrence, Kansas 'by the~ Helminthological SQciety of Washington. /Papers need not be presented at a meeting to be published in the Proceedings. ^MANUSCRIPTS should be sent to the' EDITOR, A. Janles Haley, rjepartment. of Zoology, Uni- versity of Maryland, College Park,fMaryland20742.vManuscripts must be typewritten, double spaced, and1, in finished form. The original and two copies ar|e required.' Photocopies of figures and, drawipgs may be; submitted for review purposes; Originals W'ill beirequested after acceptance of the manuscript. Papers are,accepted with the ^understanding, that the,y will be published only in ;the Proceedings,." ;. / REPRINTS mavy be ordered from the PRINTER at the: Carrie time thercofrected,proof is returned ^ihe EDITOR. ';>;; . /,' /.' •' ',: " ...^'^; ' ._', ,_• •.^:".: ' '? ; H '0 p ' ' ,BACK VOLUMES of the Proceedings are available. Inquiries concerhirig back volumes and current f subscriptions should "be directed .toffH'elminthological Society of Washington, c/o -Allen 'PiNess^Inc., 1041 New Mairipshire^St., 'Lawrence, Kansas .66044, U.S.A. /,- BUSINESS OFFICE. The Society's -business office is:at La wrerice^ Kansas. All inquiries con- cerriing subscriptions or/back issues an7d all payments for dues, subscriptions, and back issue&jshould ; be addressed to: Helminthological Society of Washington, c/o Allen Press, Inc., 1041 New Hampshire St. , /Lawrence, Kansas 66044, U.S.A. „. '-'r,/',' fr>;;*/ .0 -'\'/./ t'%; iO ":- :'^---- /--'; -''-v^ BOARD Yt ; A. JAMES/HALEY, E&itor'' /19791 & '!/• •'.{' [ 1980 v % ]';-[+ :- ^DOMINIC DE (3IUSTI ; , JOHNL. CRITES' ' V : /WIliLIAM C. CAMPBELL' DONALD J. FORRESTER DELANE-C KRITSKY;-,'! ( JOHN C. HOLMES -< : " KENNETH Ci KATES ; BRENT B. NICKOL H'-f RALPH J. LICHTENFELS JOHN D. MIZELLE ^ StEWARTvG. SCHELL '/- JOHN S. MACKIEWICZ MARTIN J.ULMER HORACE <\VY STUNKARD MARIETTA VOGE " i-i>l:f''''V^ •/':'%- -^T*.'1 -, r ' .1 '. • x /^^' •V> Copyright © 2011, The Helminthological Society of Washington Proc. Helminthol. Soc. Wash. 46(2), 1979, pp. 165-170 Polypocephalus sp. (Cestoda; Lecanicephalidae): A Description of Tentaculo-Plerocercoids from Bay Scallops of the Northeastern Gulf of Mexico EDWIN W. CAKE, JR. Gulf Coast Research Laboratory, Ocean Springs, Mississippi 39564 ABSTRACT: Tentaculo-plerocercoids of Polypocephalus Braun are described from digestive gland tissues of the Atlantic bay scallop, Argopecten irradians concentricus (Say), from the northeastern Gulf of Mexico. Forty-two of 55 scallops (76%) collected from four Florida bays adjacent to the Apalachicola River delta exhibited a mean infection intensity of 18.5 ± 5.5 plerocercoids/scallop. Bay scallops appear to be intermediate hosts in the life cycle of this cestode. Nine species of Polypocephalus Braun (Cestoda; Lecanicephalidae) are known worldwide (Subhapradha, 1951). Although there are no published reports of Po- lypocephalus adults in elasmobranchs from the Gulf of Mexico, their presence has been confirmed (Tom Mattis, Gulf Coast Research Laboratory Parasitology Section, personal communication). I reported tentaculo-plerocercoids of Poly- pocephalus sp. from digestive gland tissues of the Atlantic bay scallop, Argo- pecten irradians concentricus (Say) (Mollusca; Pectinidae), at St. Teresa Beach, Florida (Cake, 1972). Six additional species of larval cestodes infect bay scallops in the eastern Gulf (Cake, 1976, 1977) including three tetraphyllideans, two try- panorhynchs, and one other lecanicephaloidean, Tylocephalum sp. sensu Burton (1963). This report, which presents descriptive and infection data and proposes life cycle pathways, was derived, in part, from my doctoral research on larval ces- todes of coastal, benthic mollusks of the eastern Gulf of Mexico (Cake, 1975). Materials and Methods Bay scallops were collected while skin diving over marine grassflats in shallow coastal bays adjacent to the Apalachicola River delta in the northeastern Gulf of Mexico. The stomach, intestine, digestive gland, digestive diverticula, and mes- enteries of each scallop were examined with the aid of a stereo-zoom, dissection microscope. After the initial examination, all visceral tissues were held in petri dishes containing filtered seawater (ca. 30%0) and permitted to putrefy. Complete recovery of the plerocercoids required partial decomposition of visceral tissues and examination of the supernatant saline. Examinations were repeated every few hours until no plerocercoids were recovered during two or more consecutive examinations. Excysted plerocercoids were counted and either fixed, preserved, and stained using standard helminthological techniques, or maintained in glucose-enriched, artificial elasmobranch saline (vide Read et al., 1960; Hamilton and Byram, 1974) for futher study. Plerocercoids were stained with Ehrlich's acid hematoxylin and mounted in Permount. Illustrations were made with the aid of a microprojector and measurements were made with an ocular micrometer. Descriptive measure- ments are given in micrometers and include the mean ± the standard error, the range, and the total number of structures measured. 165 Copyright © 2011, The Helminthological Society of Washington 166 • PROCEEDINGS OF THE HELMINTHOLOGICAL SOCIETY I have chosen to follow the taxonomy of Polypocephalus proposed by South- well (1930) who considered Lecanicephaloidea separate from Tetraphyllidea, and of Pintner (1928) who separated the order into
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