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Parasites of fingerling herring Clupea harengus L.: ecology and fine morphology

Published online by Cambridge University Press:  01 June 2007

Hassan Rahimian
Hassan Rahimian*
Affiliation:
Box 14155-6455, School of Biology, University College of Science, University of Tehran, Tehran, Iran
*
*E-mail: rahimian@khayam.ut.ac.ir
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Abstract

The parasite fauna of young-of-the-year herring Clupea harengus L., off Gullmarsfjord and Brofjorden, west coast of Sweden, was studied between May and October for 4 years, from 1994 to 1997. Fifteen species of parasites were found: two Protozoa – Trichodina sp. and Ceratomyxa auerbachi; one species of uncertain affinity – Ichthyophonus hoferi; two Monogenea – Gyrodactylus harengi and Pseudanthocotyloides heterocotyle; five Digenea – Cryptocotyle lingua metacercariae, Cercaria pythionike metacercariae, Hemiurus luehei, Lecithaster confusus and Pseudobacciger harengulae; three Cestoda plerocercoids – Bothriocephalus sp., an acrobothriid and a tetraphyllid; one Nematoda – Hysterothylacium aduncum larva; and one Copepoda – Caligus elongatus. The number of species found in this study represents more than one-sixth of all parasites reported in herring worldwide and all parasites were acquired locally. The parasite fauna of herring from the west coast of Sweden is compared with that of herring from the Baltic Sea and other areas of the north-east Atlantic. The prevalence and intensity of parasites are presented and discussed. Morphological descriptions are based on both light and scanning electron microscopy and new features are described. Possible applications of this new information about the parasite fauna, in different areas of fisheries and fish biology studies, are discussed.

Type
ICOPAXI Papers
Information
Journal of Helminthology , Volume 81 , Issue 2: Special Issue , June 2007 , pp. 199 - 217
Copyright
Copyright © Cambridge University Press 2007

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References

Andree, K.B.S., Gresoviac, J. & Hedrick, R.P. (1997) Small subunit ribosomal RNA sequences unite alternate Actinosporean and Myxosporean stages of Myxobolus cerebralis, the causative agent of whirling disease in salmonid fish. Journal of Eukarytic Microbiology 44, 208–215.CrossRefGoogle ScholarPubMed
Arthur, J.R. (1978) Studies on the parasites of Pacific herring (Clupea harengus pallasi) in North American waters. PhD thesis, University of Calgary, Calgary, Alberta.Google Scholar
Arthur, J.R. & Arai, H.P. (1980a) Studies on the parasites of Pacific herring (Clupea harengus pallasi Valenciennes): survey results. Canadian Journal of Zoology 58, 64–70.CrossRefGoogle Scholar
Arthur, J.R. & Arai, H.P. (1980b) Studies on the parasites of Pacific herring (Clupea harengus pallasi Valenciennes): a preliminary evaluation of parasites as indicators of geographical origin for spawning herring. Canadian Journal of Zoology 58, 521–527.CrossRefGoogle Scholar
Arthur, J.R. & Arai, H.P. (1984) Annotated checklist and bibliography of parasites of herring (Clupea harengus). Canadian Special Publication of Fisheries and Aquatic Sciences 70, 26.Google Scholar
Avdeeva, H.B. (1989) On the generic position of three types of larvae of cestodes of the collective genus ‘Scolex’. Parazitologiya 23, 351–355.Google Scholar
Bartholomew, J.L., Whipple, M.J., Stevens, D.G. & Fryer, J.L. (1997) The life cycle of Ceratomyxa shasta, a myxosporean parasite of salmonids, requires a freshwater polychaete as an alternate host. Journal of Parasitology 83, 859–868.CrossRefGoogle ScholarPubMed
Berland, B. (1995) Novel techniques in helminthology. Proceeding of the IV International Symposium of Fish Parasitology, Munich, Germany, 3–7 October 1995. Abs. No. 92.Google Scholar
Bray, R.A. (1994) Order Nippotaeniidea Yamaguti, 1939. pp. 768, in Kalil, L.F., Jones, A. & Bray, R.A. (Eds) Key to the cestode parasites of vertebrates. Wallingford, Oxon, CAB International.Google Scholar
Bray, R.A. & MacKenzie, K. (1990) Aponurus laguncula Looss, 1907 (Digenea: Lecithasteridae): a report from herring, Clupea harengus L., in the eastern English Channel and a review of its biology. Systematic Parasitology 17, 115–124.CrossRefGoogle Scholar
Cheng, T.C. (1986) General parasitology. 827 pp. 2nd edn, London, Academic Press.Google Scholar
Diamant, A. (1997) Fish-to-fish transmission of a marine myxosporean. Diseases of Aquatic Organisms 30, 99–105.CrossRefGoogle Scholar
Dimitrov, G.I., Bray, R.A. & Gibson, G.I. (1999) A redescription of Pseudobacciger harengulae (Yamaguti, 1938) (Digenea: Faustulidae) from Sprattus sprattus phalericus (Risso) and Engraulis encrasicholus ponticus Alexandrov off the Bulgarian Black Sea coast, with a review of the genus Pseudobacciger Nahhas and Cable, 1964. Systematic Parasitology 43, 133–146.CrossRefGoogle ScholarPubMed
Dollfus, R.P. (1956) Liste des parasites animaux du hareng de l'Atlantique Nord et de la Baltique. Journal du Conseil International pour l'Exploration de la Mer 22, 58–65.CrossRefGoogle Scholar
Ellis, M.F. (1930) Investigation on the protozoan fish parasites of the St. Andrew's region. Transactions of the Nova Scotian Institute of Science 17, 268–275.Google Scholar
El-Matbouli, M. & Hofmann, R.W. (1989) Experimental transmission of two Myxobolus spp. developing bispogeny via tubificid worms. Parasitology Research 75, 461–464.CrossRefGoogle ScholarPubMed
Euzet, L. & Prost, M. (1969) Pseudanthocotyloides heterocotyle (van Beneden, 1871) (Monogenea: Polyopisthocotylea), parasite de Clupea sprattus (L) en Méditerranée. Revision anatomique et position systématique. Acta Parasitologica Polonica 17, 109–114.Google Scholar
Gaevskaya, A.V. (1977) Parasitofauna of Baltic herring (Clupea harengus membras) from the Southeast Baltic Sea. International Council for the Exploration of the Sea. C.M. 1977/H: 7, 11 pp. Pelagic Fish (Northern) Committee of the ICES.Google Scholar
Gaevskaya, A.V. (1996) New records of trematodes from eastern Atlantic fishes. Parazitologiya (St. Petersburg) 30, 504–509.Google Scholar
Gibson, D.I. (1994) Order Spathebothriidea Wardle and McLeod, 1952. in Khalil, L.F., Jones, A. & Bray, R.A. (Eds) Key to the cestode parasites of vertebrates., Wallingford, Oxon, CAB International.Google Scholar
Gibson, D.I. (1996) Guide to the parasites of fishes of Canada. Canadian Special Publication of Fisheries and Aquatic Sciences; 124: Part V, Trematoda. Ottawa, NRC Research Press.Google Scholar
Gibson, D.I. & Bray, R.A. (1979) The Hemiuroidea: terminology, systematics, and evolution. Bulletin of the British Museum of Natural History (Zoology) 36, 35–146.Google Scholar
Gibson, D.I. & Bray, R.A. (1986) The Hemiuridae (Digenea) of fishes from the north-east Atlantic. Bulletin of the British Museum of Natural History (Zoology) 51, 1–125.Google Scholar
Golomazou, E., Athanassopoulou, F., Karagouni, E., Tsagozis, P., Tsantilas, H. & Vagianou, S. (2006) Experimental transmission of Enteromyxum leei Diamant, Lom and Dykova, 1994 in sharpsnout sea bream, Diplodus puntazzo C. and the effect on some innate immune parameters. Aquaculture 260, 44–53.CrossRefGoogle Scholar
Grossheider, G. & Körting, W. (1993) Experimental transmission of Sphaerospora renicola to common carp Cyprinus carpio. Diseases of Aquatic Organisms 16, 91–95.CrossRefGoogle Scholar
Hallett, S.L., Erseus, C. & Lester, R.J.G. (1999) Actinosporeans (Myxozoa) from marine oligochaetes of the Great Barrier. Systematic Parasitology 44, 49–57.CrossRefGoogle ScholarPubMed
Hansen, V. (1955) The food of herring on the Bløden Ground (North Sea) in 1953. Journal du Conseil 21, 61–64.CrossRefGoogle Scholar
Heath, M.R. (1984) Reports on an acoustic survey carried in the northern part of Division VIA on herring and mackerel. International Council for the Exploration of the Sea. C.M. 1984/H: 62, 10 pp. Pelagic fish Committee of the ICES.Google Scholar
Heath, M. & Nicoll, N. (1991) Infection of larval herring by helminth parasites in the North Sea and the effect on feeding incidence. Continental Shelf Research 11, 1477–1489.CrossRefGoogle Scholar
Hughes, G.M. (1984) General anatomy of the gills. pp. 1–72, in Hoar, W.S. & Randall, D.J. (Eds) Fish physiology, Vol. 10, part A. London, Academic Press.CrossRefGoogle Scholar
Hunninen, A.V. & Cable, R.M. (1943) The life history of Lecithaster confusus Odhner. Journal of Parasitology 29, 71–79.CrossRefGoogle Scholar
Ibarra, A.M., Gall, G.A. & Hedrick, R.P. (1991) Susceptibility of two strains of rainbow trout (Oncorhynchus mykiss) to experimentally induced infections with the myxosporean Ceratomyxa Shasta. Diseases of Aquatic Organisms 10, 191–194.CrossRefGoogle Scholar
Ikeda, J. (1912) Studies on some sporozoan parasites of sipunculoids. I. The life history of a new Actinomyxidian, Tetractinomyxon intermedium g. et sp. nov. Archiv für Protistenkunde 25, 240–242.Google Scholar
Ivanchenko, O.F. & Grozdilova, T.A. (1985) Comparative parasitological analysis of juvenile herring (Clupea pallasi) reared in experimental conditions and caught in the sea. Parazitologiya (St. Petersburg) 19, 264–267.Google Scholar
Kabata, Z. (1962) Five new species of Myxosporidia from marine fishes. Parasitology 52, 177–186.CrossRefGoogle Scholar
Kabata, Z. (1979) Parasitic copepoda of British fishes. pp. 650London, Ray Society, British Museum.Google Scholar
Kent, M., Andree, K.B., Bartholomew, J.L., El-Matbouli, M., Desser, S.S., Devlin, R.H., Feist, S.W., Hallet, S.L., Hedrick, R.P., Hoffmann, R.W., Khattra, J., Lester, R.J.G., Longshaw, M., Palenzuela, O. & Xiao, L. (2001) Recent advances in our knowledge of Myxozoa. Journal of Eukarytic Microbiology 48, 395–413.CrossRefGoogle ScholarPubMed
Kim, Y.G. & Chun, S.K. (1984) Studies on the life history of Bacciger harengulae. Bulletin of the Korean Fisheries Society 17, 449–470.CrossRefGoogle Scholar
Køie, M. (1977) Stereoscan studies of cercariae, metacercariae, and adults of Cryptocotyle lingua (Creplin 1825) Fischoeder 1903 (Trematoda: Heterophyidae). Journal of Parasitology 63, 835–839.CrossRefGoogle ScholarPubMed
Køie, M. (1983) Digenetic trematodes from Limanda limanda (L.) (Osteichthyes, Pleuronectidae) from Danish and adjacent waters, with special reference to their life-histories. Ophelia 22, 201–228.CrossRefGoogle Scholar
Køie, M. (1990) On the morphology and life-history of Hemiurus luehei Odhner, 1905 (Digenea: Hemiuridae). Journal of Helminthology 64, 193–202.CrossRefGoogle ScholarPubMed
Køie, M. (1993) Aspects of the life cycle and morphology of Hysterothylacium aduncum (Rudolphi, 1802) (Nematoda, Ascaridoidea, Anisakidae). Canadian Journal of Zoology 71, 1289–1296.CrossRefGoogle Scholar
Køie, M. (2000) First record of an actinosporean (Myxozoa) in a marine polychaete annelid. Journal of Parasitology 86, 871–872.CrossRefGoogle Scholar
Køie, M. (2002) Spirorchid and serpulid polychaetes are candidates as invertebrate hosts for Myxozoa. Folia Parasitologia 49, 160–162.CrossRefGoogle ScholarPubMed
Køie, M. (2005) The Spionidae (Polychaeta) act as invertebrate hosts for marine Myxozoa. Bulletin of European Association of Fish Pathologists 25, 179–181.Google Scholar
Kulachkova, V.G. (1989) Parasites as tags in biological studies of the White Sea herring (Clupea pallasi). pp. 73–80 in Parasites of freshwater fishes of North-West Europe. International Symposium within the Program of Soviet–Finnish Cooperation.Google Scholar
Lauckner, G. (1984) Diseases caused by microorganisms: Agents: Fungi. pp. 89–113 in Kinne, O. (Ed.) Diseases of marine animals, Vol. 4, Part 1. Hamburg, Biologische Anstalt Helgoland.Google Scholar
Linton, E. (1940) Trematodes from fishes, mainly from the Woods Hole region, Massachusetts. Proceeding of the United States National Museum 88, 1–172.CrossRefGoogle Scholar
Linton, E. (1941) Cestode parasites of teleost fishes of the Woods Hole region, Massachusetts. Proceeding of the United States National Museum 90, 417–442.CrossRefGoogle Scholar
Lom, J. & Laird, M. (1969) Parasitic protozoa from marine and euryhaline fish of Newfoundland and New Brunswick. I. Peritrichous ciliates. Canadian Journal of Zoology 47, 1367–1380.CrossRefGoogle Scholar
Longshaw, M. (1996) Mortality of captive herring, Clupea harengus L. (Teleostei: Clupeidae) due to Pseudanthocotyloides heterocotyle (van Beneden, 1871) (Monogenea: Polyopisthocotylea: Mazocraeidae). Bulletin of European Association of Fish Pathologists 16, 143–144.Google Scholar
Longshaw, M., Fiest, S., Canning, E.U. & Okamura, B. (1999) First identification of PKX in bryozoans from the United Kingdom—molecular evidence. Bulletin of European Association of Fish Pathologists 19, 146–148.Google Scholar
MacKenzie, K. (1975) Renicola metacercariae (Digenea: Renicolidae) in clupeoid fish: new host records. Journal of Fish Biology 7, 359–360.CrossRefGoogle Scholar
MacKenzie, K. (1985) The use of parasites as biological tags in population studies of herring (Clupea harengus L.) in the North Sea and to the north and west of Scotland. Journal du Conseil International pour l'Exploration de la Mer 42, 33–64.CrossRefGoogle Scholar
MacKenzie, K. (1987a) Relationships between the herring, Clupea harengus L., and its parasites. Advances in Marine Biology 24, 246–319.Google Scholar
MacKenzie, K. (1987b) Parasites as indicators of host populations. Parasitology-Quo V Proceedings of the 6th International Congress of Parasitology, Brisbane, Australia. International Journal for Parasitology 17, 345–352.CrossRefGoogle Scholar
MacKenzie, K. & Gibson, D.I. (1970) Ecological studies on some parasites of plaice, Pleuronectes platessa (L) and flounder, Platichthys flesus (L). Symposium of the British Society for Parasitology 8, 1–42.Google Scholar
Madhavi, R. (1975) Digenetic trematodes from marine fishes of Waltair coast, Bay of Bengal. Family Fellodistomatidae. Rivista di Parassitologia 36, 267–278.Google Scholar
Malmberg, G. (1957) Om förekomsten av Gyrodactylus på svenska fiskar. Skrifter utgivna av Södra Sveriges Fiskeriförening.Årsskrift 1956, 16–76.Google Scholar
Malmberg, G. (1970) The excretory systems and the marginal hooks as a basis for the systematics of Gyrodactylus (Trematoda: Monogenea Seri). Kungl Sevenska Vetenskapsakademien, Arkiv för Zoologi 2, 23 (1), 1–235.Google Scholar
Manter, H.W. (1947) The digenetic trematodes of marine fishes of Tortugas, Florida. The American Midland Naturalist 38, 257–416.CrossRefGoogle Scholar
Markiw, M.E. & Wolf, K. (1983) Myxosoma cerebralis (Myxozoa, Myxosporea) etiologic agent of salmonid whirling disease requires tubificid worms (Annelida: Oligochaeta) in its life cycle. Journal of Parasitology 30, 561–564.Google Scholar
Matthews, B.F. & Matthews, R.A. (1988) The tegument in Hemiuridae (Digenea: Hemiuroidea): structure and function in the adult. Journal of Helminthology 62, 305–316.CrossRefGoogle Scholar
McGladdery, S.E. & Burt, M.D.B. (1985) Potential of parasites for use as biological indicators of migration, feeding and spawning behaviour of northwestern Atlantic herring (Clupea harengus). Canadian Journal of Fisheries and Aquatic Sciences 42, 1957–1968.CrossRefGoogle Scholar
Moran, J.D.W., Whitaker, D.J. & Kent, M.L. (1999) Natural and laboratory transmission of the marine Myxozoan parasite Kudoa thyrsites to Atlantic salmon. Journal of Aquatic Animal Health 11, 10–115.2.0.CO;2>CrossRefGoogle Scholar
Morris, D.J. & Adams, A. (2006) Transmission of freshwater myxozoans during the asexual propagation of invertebrate hosts. International Journal for Parasitology 36, 371–377.CrossRefGoogle ScholarPubMed
Moser, M. (1991) Parasites as biological tag. Parasitology Today 7, 182–185.CrossRefGoogle Scholar
Naidenova, N.N. (1974) The parasite fauna of the family Gobiidae from the Black and Azov Seas. 182 pp. Kiev, USSR, Naukova Dumka.Google Scholar
Nicoll, W. (1907) A contribution towards a knowledge of the Entozoa of British marine fishes. Part 1. Annals and Magazine of Natural History 19 (7), 66–94.CrossRefGoogle Scholar
Odening, K. (1978) Trematodenliste der DDR. Angewandte Parasitologie 19, 168–186 (in German).Google Scholar
Piasecki, W. (1996) The developmental stages of Caligus elongatus von Nordmann, 1832 (Copepoda: Caligidae). Canadian Journal of Zoology 74, 1459–1478.CrossRefGoogle Scholar
Polyansky, Yu.I. (1955) Parasites of the fish of the Barents Sea. Zoologicheskogo Instituta Akademiya Nauk SSSR 19, 158 pp. (English translation 1966, by Israel Program for Scientific Translations).Google Scholar
Polyansky, Yu.I. & Shulman, S.S. (1956) Age alteration in the parasite fauna of fish. Trudy Karelo-Finskogo Filiala. Akademiya Nauk SSSR (4), 3–26.Google Scholar
Príhoda, J. (1983) Experimental infection of rainbow trout fry with Myxosoma cerebralis Hoffer, 1903. Parasites and Parasitic Diseases of Fish: Proceedings of the First International Symposium of Ichthyoparasitology. p. 98. Ceské Budejovice, Czechoslovakia, Institute of Parasitology of the Czechoslovak Academy of Sciences.Google Scholar
Ragan, M.A., Goggin, C.L., Richard, J.C., Cerenius, L., Jamieson, A.V.C., Plourde, S.M., Rand, T.G. & Söderhäll, K. (1996) A novel clade of protistan near the animal–fungal divergence. Proceedings of the National Academy of Sciences USA 93, 11907–11912.CrossRefGoogle ScholarPubMed
Rahimian, H. (1998) Pathology and morphology of Ichthyophonus hoferi in naturally infected fishes off the Swedish west coast. Diseases of Aquatic Organisms 34, 109–123.CrossRefGoogle ScholarPubMed
Rahimian, H. & Thulin, J. (1996) Epizootiology of Ichthyophonus hoferi in herring population off the Swedish west coast. Diseases of Aquatic Organisms 27, 187–195.CrossRefGoogle Scholar
Rahimian, H. & Thulin, J. (2003) Pseudobacciger harengulae from the Atlantic herring Clupea harengus: a new host and locality record. Journal of Helminthology 77, 69–75.CrossRefGoogle ScholarPubMed
Rahimian, H., Longshaw, M., MacKenzie, K. & Thulin, J. (1999) Pseudanthocotyloides heterocotyle (van Beneden, 1871) Euzet and Prost, 1969 (Monogenea: Polyopisthocotylea: Mazocraeidae), a parasite of herring Clupea harengus L. (Teleostei: Clupeidae) and of sprat Sprattus sprattus L. (Teleostei: Clupeidae). Systematic Parasitology 42, 193–201.CrossRefGoogle Scholar
Rand, T.G. (1990) Studies of Ichthyophonus hoferi Plehn and Mulsow 1991, from Nova Scotian yellow tail flounder, Limanda ferruginea. PhD thesis, Department of Biology, University of New Brunswick.Google Scholar
Reimer, L.W. (1970) Digene Trematoden und Cestoden der Ostseefische als natürliche Fischmarken. Parasitologische Schriftenreihe 20, 1–143.Google Scholar
Rokicki, J. (1973) Helminths of certain Clupeidae mainly of the herring Clupea harengus L., in south Baltic. Acta Parasitologica Polonica 21, 443–464.Google Scholar
Rosenthal, H. (1967) Parasites in larvae of herring (Clupea harengus L.) fed with wild plankton. Marine Biology (Berlin) 1, 10–15.CrossRefGoogle Scholar
Rothschild, M. & Sproston, N. (1941) The metacercaria of Cercaria doricha Rothschild 1935 or a closely related species. Parasitology 33, 359–362.CrossRefGoogle Scholar
Shulman, S.S. (1956) Parasite fauna of Clupea harengus, Osmerus eperlanus, and Eleginus navaga in the White Sea (in Russian). Trudy Karelo-Finskogo Filiala. Akademiya Nauk SSSR, Ser. Parasitol. 4, 50–67.Google Scholar
Sindermann, C.J. (1957) Diseases of fishes of the western North Atlantic. V. Parasites as indicators of herring movements. Maine Department of Sea Shore Fisheries Research Bulletin 27, 30.Google Scholar
Sindermann, C.J. (1961) Sporozoan parasites of sea herring. Journal of Parasitology 47, 34.Google Scholar
Sindermann, C.J. (1966) Larval ecology of the trematode Cryptocotyle lingua. pp. 12–13, Proceeding of the first International Congress of Parasitology, Vol. 1. Milano, Pergamon Press.CrossRefGoogle Scholar
Sindermann, C.J. (1990) Principal diseases of marine fish and shellfish Vol. 1, 2nd edn. New York, Academic Press.Google Scholar
Sindermann, C.J. & Rosenfield, A. (1954) Diseases of fishes of the western North Atlantic I. Diseases of the sea herring (Clupea harengus). Maine Department of Sea Shore Fisheries Research Bulletin 18, 23.Google Scholar
Sindermann, C.J. & Scattergood, L.W. (1954) Diseases of fishes of western North Atlantic. II. Ichthyosporidium disease of the sea herring (Clupea harengus). Maine Department of Sea Shore Fisheries Research Bulletin, 19 pp.Google Scholar
Smith, J.W. (1983) Larval Anisakis simplex (Rudolphi, 1809, det. Krabbe, 1878) and larval Hysterothylacium sp. (Nematoda: Ascaridoidea) in euphausiids (Crustacea: Malacostraca) in the North-East Atlantic and nothern North Sea. Journal of Helminthology 57, 167–177.CrossRefGoogle Scholar
Spanggaard, B., Skouboe, P. & Rossen, L. (1996) Phylogenetic relationships of the intercellular fish pathogen Ichthyophonus hoferi and fungi, choanoflagellates and the rosette agent. Marine Biology 126, 109–115.CrossRefGoogle Scholar
Sproston, N.G. (1946) A synopsis of the monogenetic trematodes. Transactions of the Zoological Society, London 25, 185–600.CrossRefGoogle Scholar
Swearer, S.E. & Robertson, D.R. (1999) Life history, pathology, and description of Kudoa ovivora n. sp. (Myxozoa, Myxosporea): An ovarian parasite of Caribbean labroid fishes. Journal of Parasitology 85, 337–353.CrossRefGoogle Scholar
Timon-David, J. (1953) Sur une métacercaire de la sardine et ses affinités avec le groupe Rhodometopa. Compte Rendu Académie des Sciences (Paris) 237, 1182–1184.Google Scholar
Tolonen, A. & Karlsbakk, E. (2003) The parasite fauna of the Norwegian spring spawning herring (Clupea harengus L.). ICES Journal of Marine Science 60, 77–84.CrossRefGoogle Scholar
van Beneden, P.J. (1871) Les poissons des côtes de Belgique, leures parasites et leur commensaux. Mémoires de l'Académie Royale des Sciences, des Letters et des Deaux-Arts de Belgique 38, 1–100.Google Scholar
van Beneden, P.J. & Hesse, C.-E. (1863) Recherches sur les Bdellodes (Hirudinées) et les trématodes marins. Mémoires de l'Académie Royale de Belgique 34, 1–142.Google Scholar
von Cosel, R., Doerjes, J. & Muehlenhardt-Siegel, U. (1982) The American jackknife clam Ensis directus in German Bight: 1. Zoogeography and taxonomy in comparison with the native jackknife and razor clams. Senckenbergiana Maritima 14, 147–173(in German).Google Scholar
Williams, H.H. & Jones, A. (1994) Parasitic worms of fish. London, Taylor & Francis.CrossRefGoogle Scholar
Wolf, K. & Markiw, M.E. (1984) Biology contravenes taxonomy in the Myxozoa: new discoveries show alternation of invertebrate and vertebrate hosts. Science 225, 1449–1452.CrossRefGoogle ScholarPubMed
Wright, C.A. (1956) Studies on the life-history and ecology of the trematode genus Renicola Cohn, 1904. Proceedings of the Zoology Society of London 126, 1–49.CrossRefGoogle Scholar
Wyatt, E.J. (1978) Studies on the epizootiology of Myxobolus insidiosus Wyatt and Pratt, 1963 (Protozoa: Myxosporida). Journal of Fish Diseases 1, 233–240.CrossRefGoogle Scholar
Yamaguti, S. (1938) Studies on the helminth fauna of Japan. Part 21. Trematodes of fishes, IV. Tokyo, Maruzan Co.Google Scholar
Zhukov, E.V. (1960) Parasitofauna of Chukotsk. I. Monogenetic trematodes of marine and freshwater fishes. Parazitologicheskii sbornik 19, 308–331(in Russian).Google Scholar
Zhukov, E.V. (1963) On the parasite fauna of fishes of the Chukotsk Peninsula and adjoining seas. II. Endoparasitic worms of marine and freshwater fishes. Parazitologiya (St. Petersburg) 21, 96–139 (in Russian).Google Scholar