Volume 60 Number 1 JOURNAL of jfe '?\f Washington <^ > ' '• A semiannual journal of research devoted to Helminthology and all branches of Parasitology • ' \ "^- ~- / -<" V "N X * N -"- v - v -^ Supported in parfby th,e - ''.-'•.<"-•' Brayton H. RarisorrrMernorial Trust Fund - ; ~ >-'• ;.-S' -ii:v "-i ^ " CONTENTS /''-_ '( _, v/x,s \'_;1 }' "' CONE, D. K. AND-Kl.; ROTH. Prevalence and intensity of Gyrodactylus maculosi sp. n. (Monpgenea) parasitizing gills'-of sculpm (Oligocottits maculosus) m 'coastal British Columbia, Canada _.- ^ .. _ . :. DAILEY,M.D.,M.L.FAST,ANDG.H.BALAZS; ^Hapalotremadorsoporasp.n.(Trem- v atoda: Spirorchidae) from the heart of the green l\\r\\^(€heloma mydas) with a ^ •redescription of Hapalotrema posiorchis'.............-... ........:... ...... ..l....^.£..^.™_i. MCLAUGHLIN, G. S., M. OBSTBAUM, D. J. FORRESTER,,M.E. ROELKE, AND J. R.- ^ v BRADY. ""Hookworms of bobcats (Felis mtfus) from Florida ~:...^L ^......,_.™™_ 10 HUSSEIN, H. S. AND AT M. N. ,KALANTAN. Dentostomella tqmimi sp. -Ji. (Nema- ,"~ toda: Heieroxynematidae) from .the spiny mouse, Acomys dimidiatus, in Saudi Arabia a .._....._ :.„.:. .>..,...,..._'....... , , „ '.. i 1ENDO, B. Y^ Ultrastructure of subventral gland'secretory granules In parasitic juver niles of the soybean cyst nemalode, Heteroderaglycines^. ,.„...._ _....,..<:.r.....C....... ,22 FEDYNICH, A. M., D. B. PENCE, ANoR. D. GODFREY, JR. -Hemosporids (Apiconiplexa, - Hematozoea, Hemosporida) of anatids from the Southern Higlr Plains of Texas / - HASEOAWA, H., S. ARAI, AND S. SHIRAISHI. Nematodes collected from rodents on Uotsuri Island, Okinawa, Japan ~. ;;.;=v....._._;........T '1 ,._ _„ 3 9 KELLY, R^AND J. L. CRITES. - Ultrastructure of the" first-stage larvae of a Rhilometra ^ ••- ~;sp. (Nematoda: Philometridae) from freshwater drum (Aplodinotus grun^iens)._. ^48 MuzzALL,P. M. Parasites of parr andlakeiage Chinook salmon, Oncorhynchus tshaw- ' - ' '• ytscha, from the Pere Marquette-River and vicinity, Michigan ...,._........ ,._;.......... 55 "MEASURES, L. N. Annotated list of metazoan parasites reported from therblue whale, -^ - Balaenoptera musculw ,..j...,....Z~..^.J......~,^:.::.. .:.: „_...„ ;... 62 .V ' y {Continued on Outside Back Cover) "7./, - Copyright © 2011, The Helminthological Society of Washington THE HELMINTHOLOGICAL SOCIETY OF WASHINGTON - ~ THE SOCIETY meets once a month from October through May for the presentation and discussion of papers in any and all branches of parasitology or related sciences. All interested persons are invited to attend. ^Persons interested in membership in-th& Helminthological Society/of Washington may obtain ^application blanks in recent issues of THE JOURNAL. A year's subscription to the Journal is included in the annual dues. -President: RUT H M. KULSTAD ~~ -, - ._ - Vice President: MARK C. 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All inquiries concerning subscriptions or back issues and all payments for dues, subscriptions, and back issues should be addressed to: Helminthological Society of Washington, % Allen Press, Inc., 1041 New Hampshire St., Lawrence, Kansas 66044, U.S.A. ~*! " -,.-- EDITORIAL BOARD RALPH P: ECKERLIN, Editor ; 1 1993 \994 -^ 1995 :,.^ DWIGHT D. BOWMAN v. ROY C. ANDERSON DANIEL R. BROOKS RAYMOND H. FETTERER RAYMOND M. CABLE ERIC;P. HOBERG WILLIAM F. FONT : RONALD PAYER ROBIN M. OVERSTREET JOHN C. HOLMES A. MORGAN GOLDEN MARY H. PRITCHARD J. RALPH LICHTENFELS SHERMAN S. HENDRIX ROBERT'L. RAUSCH / JOHN S. MACKIEWICZ RQBIN N. HUETTEL HARLEY G. SHEFFIELD BRENT B.-NICK6L DANNY B. PENCE DENNIS A. THONEY s VASSILIOS THEODORIDES 7OSEPH F. URBAN , -•' STEVE J. UPTON © The Helminthological Society of Washington 1993 ' 'N • ", • ,'---' ' '"': •' - "---.•/ ISSN 1049-233X THIS PUBLICATION IS PRINTED ON ACID-FREE PAPER. Copyright © 2011, The Helminthological Society of Washington J. Helminthol. Soc. Wash. 60(1), 1993, pp. \-4 Prevalence and Intensity of Gyrodactylus maculosi sp. n. (Monogenea) Parasitizing Gills of Sculpin (Oligocottus maculosus) in Coastal British Columbia, Canada D. K. CONE1 AND M. ROTH2'3 1 Department of Biology, Saint Mary's University, Halifax, Nova Scotia, Canada B3H 3C3 and 2 Vancouver Public Aquarium, P.O. Box 3232, Vancouver, British Columbia, Canada V6K 3X8 ABSTRACT: Gyrodactylus maculosi sp. n. (Monogenea: Gyrodactylidae) is described from the gills of tidepool sculpin (Oligocottus maculosus) in coastal British Columbia, Canada. The parasite resembles most closely G. cranei Mizelle and Kritsky, 1967, and G. pacificus Mizelle and Kritsky, 1967, described from the Pacific tomcod (Microgadus proximus). The 3 species appear to represent a lineage that has radiated among neritic fishes off the coast of western North America. Members have stout hamuli with a short recurved point and long recurved root and a ventral bar devoid of anterolateral processes. The marginal hook sickle has a well-developed base with a relatively slender blade. Each species has characteristic haptoral sclerites. Host fishes were collected bimonthly from January 1988 through December 1988. Prevalence was 61-100%. Intensity was 1-598, with highest numbers of parasites recovered in June and July. In spite of intense infections there was no sign of gross pathology of the gills or of host mortality. KEY WORDS: Gyrodactylus maculosi sp. n., Monogenea, Oligocottus maculosus, British Columbia. During a study of parasites of sculpin (Oligo- Results cottus maculosus Girard) inhabiting tidepools in Gyrodactylus maculosi sp. n. coastal British Columbia, a previously unde- (Figs. 1-3) scribed species of Gyrodactylus was found. The present study describes the new worms as Gy- DESCRIPTION: Mounted specimens 410 (360- rodactylus maculosus sp. n. and reports on the 450) long, 100 (90-140) wide at midbody. Phar- parasite's seasonal occurrence and effect on the ynx 40 (39-42) long, with long cellular processes. host. Penis (12-15) in diameter, with a single large spine and 2 pairs of small spines in single row Materials and Methods at opening of ejaculatory duct. Hamuli robust, Semimonthly samples of 13-16 adult O. maculosus 67 (63-67) long; root 31 (29-31), shaft 44 (42- were collected from tidepools located around Popham 44), point 22 (20-23). Ventral bar dumb-bell Island, Howe Sound (49°21'N, 123°29'W), British Co- shaped, 31 (21-25) wide, 7 (5-7) long medially. lumbia, Canada, between January and December 1988. Fish were captured by dip net during low tide and fixed Ventral bar anterolateral processes absent. Ven- immediately in 10% formalin. Standard length and tral bar membrane rectangular in shape, 25 (21- weight of each fish were recorded. Gills were excised 25) long with posterior margin indistinct. Dorsal and examined microscopically for parasites. Preva- bar simple, without median notch. Marginal hook lence refers to the percentage of infected fish in a sam- ple. Mean intensity refers to the mean number of par- 36 (33-36) long. Marginal hook sickle 6 (6-7) asites per infected fish. A Kolmogorov-Smirnov test long, 4 (4-6) wide basally, 7 (6-7) wide distally, statistic revealed that the intensity data were overdis- with strongly recurved blade. Marginal hook persed, approaching a negative binomial distribution. handle consistent width along entire length and We therefore applied the nonparametric Kruskall-Wal- without distinct terminal swelling, 30 (30-31) lis test when comparing grouped bimonthly intensities. We also found it appropriate to calculate median in- long. Filament 9 (9-11) long. tensities, so as to minimize the influence of the over- TYPE HOST: Oligocottus maculosus Girard dispersed data. Ten parasites were mounted unstained (adults). in glycerine jelly and used for morphological study; 6 TYPE LOCALITY: Popham Island, Howe Sound were measured by means of an ocular graticule. Mea- surements of the holotype