REVIEW ARTICLE

Gupta Sapna and Srivastava Arvind K. - Biochemical targets in filarial worms for selective antifilarial drug design 1-18.

ORIGINAL PAPERS

Donskow Katarzyna, Bajer Anna, Bednarska Malgorzata and Sinski Edward - Experimental transmission of Cryptosporidium parvum isolates from wild rodents and calves to laboratory bred common voles (Microtus arvalis) 19-24.
Chomicz Lidia, Zebrowska Justyna, Piekarczyk Janusz, Starociak Bohdan, Myjak Przemyslaw, Walski Michal and Kazimierczuk Zygmunt - In vitro studies on susceptibility of Acanthamoeba castellanii to selected chemical agents 25-31.
Kearn Graham C. and Whittington Ian D. - Neoentobdella gen. nov. for species of Entobdella Blainville in Lamarck, 1818 (Monogenea, Capsalidae, Entobdellinae) from stingray hosts, with descriptions of two new species 32-48.
Faltynkova Anna - Larval trematodes (Digenea) in molluscs from small water bodies near Ceske Budejovice, Czech Republic 49-55.
Vasileva Gergana P., Tkach Vasyl V. and Genov Todor - Two new hymenolepidid species (Cestoda, Hymenolepididae) from water shrews Neomys fodiens Pennant (Insectivora, Soricidae) 49-55.
Miquel Jordi, Swiderski Zdzislaw and Marchand Bernard - Spermatological characters in the Dipylidiidae Stiles, 1896 (Cestoda, Cyclophyllidea) 65-73.
Castro Raul and Gonzalez Teresa M. - Clavellotis sebastidis sp. nov. (Copepoda, Lernaeopodidae) parasitic on Sebastes oculatus Valenciennes, 1833 from Argentina 74-79.
Foronda Pilar R., Figueruelo Elena O., Ortego Antonio R., Abreu Nestor A. and Casanova Juan C. - Parasites (viruses, coccidia and helminths) of the wild rabbit (Oryctolagus cuniculus) introduced to Canary Islands from Iberian Peninsula 80-84.
Martin Juan E. and Roca Vicente - Helminths of the Atlantic lizards, Gallotia atlantica (Reptilia, Lacertidae), in the Canary Islands (Eastern Atlantic): Composition and structure of component communities 85-89.

RESEARCH NOTES

Ovcharenko Mykola, Wita Irena and Czaplinska Urszula - Ultrastructural data on Gurleya orchestiae Ovcharenko et Kurandina, 1987 (Microsporidia, Gurleyidae) 90-93.
Balicka-Ramisz Aleksandra, Pilarczyk Bogumila, Ramisz Alojzy and Cisek Agnieszka - Occurrence of gastrointestinal and pulmonary nematodes of fallow deer (Dama dama L.) in North-West Poland 94-96.

ORIGINAL PAPERS

Campbell Neil - The myxosporean parasitofauna of the Atlantic horse mackerel, Trachurus trachurus (L.) in the North-East Atlantic Ocean and Mediterranean Sea 97-101.
Etchegoin Jorge A., Timi Juan T., Cremonte Florencia and Lanfranchi Ana L. - Redescription of Prosorhynchus australis Szidat, 1961 (Digenea, Bucephalidae) parasitizing Conger orbignianus Valenciennes, 1842 (Pisces, Congridae) from Argentina 102-104.
Georgiev Boyko B., Sanchez Marta I., Green Andy J., Nikolov Pavel N., Vasileva Gergana P. and Mavrodieva Radka S. - Cestodes from Artemia parthenogenetica (Crustacea, Branchiopoda) in the Odiel Marshes, Spain: A systematic survey of cysticercoids 105-117.
Haukisalmi Voitto - Redescription of Anoplocephaloides indicata (Sawada et Papasarathorn, 1966) comb. nov. (Cestoda, Anoplocephalidae) from Tapirus indicus 118-123.
Mlocicki Daniel, Swiderski Zdzislaw, Conn David Bruce, Eira Catarina, Miquel Jordi and Baranowska-Korczyc Anna - Ultrastructure of oncospheral hook formation in the cestode Mosgovoyia ctenoides (Railliet, 1890) Beveridge, 1978 (Cyclophyllidea, Anoplocephalidae) 124-131.
Miquel Jordi, Swiderski Zdzislaw, Mlocicki Daniel, Eira Catarina and Marchand Bernard - Ultrastructure of spermatogenesis of the anoplocephalid cestode Gallegoides arfaai (Mobedi et Ghadirian, 1977) Tenora et Mas-Coma, 1978 132-144.
Braicovich Paola E., Gonzalez Raul A. and Tanzola Ruben D. - First record of Corynosoma australe (Acanthocephala, Polymorphidae) parasitizing seahorse, Hippocampus sp. (Pisces, Syngnathidae) in Patagonia (Argentina) 145-149.
Tavares Luiz E.R. and Luque Jose L. - Ergasilus youngi sp. nov. (Copepoda, Poecilostomatoida, Ergasilidae) parasitic on Aspistor luniscutis (Actinopterygii, Ariidae) from off the State of Rio de Janeiro, Brazil 150-155.
Maillo Pedro A., Vich Maria A., Salvado Humbert, Marques Adam and Gracia Maria P. - Parasites of Anguilla anguilla (L.) from three coastal lagoons of the River Ebro delta (Western Mediterranean) 156-160.
Ribas Alexis and Casanova Joan C. - Helminths of Talpa europaea (Insectivora, Talpidae) in southwestern Europe 161-167.
Foata Josephine, Culioli Julia-Laurence and Marchand Bernard - Helminth fauna of wild boar in Corsica 168-170.
Bloszyk Jerzy, Gwiazdowicz Dariusz J., Bajerlein Daria and Halliday Robert B. - Nests of the white stork Ciconia ciconia (L.) as a habitat for mesostigmatic mites (Acari, Mesostigmata) 171-175.
Dubey J.P., Knickman Edward and Greene Craig E. - Neonatal Neospora caninum infections in dogs 176-179.
Salat Jiri, Kopecky Jan, Janeckova Bohuslava and Ditrich Oleg - Different routes of infection with Encephalitozoon intestinalis affect the development of immune response in immunocompetent and immunodeficient mice 180-188.
Announcement 189.

ORIGINAL PAPERS

Metzelaars Heather, Spaargaren Tiffany, McQuistion Thomas E. and Capparella Angelo P. - Isospora iridosornisi, a new coccidian parasite (Apicomplexa, Eimeriidae) from the yellow-throated tanager, Iridosornis analis of South America 191-193.
Kinsella John M. and Tkach Vasyl V. - Notocotylus fosteri sp. nov. (Trematoda, Notocotylidae) from the rice rat, Oryzomys palustris in Florida 194-198.
Poddubnaya Larisa G., Mackiewicz John S., Brunanska Magdalena and Scholz Tomas - Ultrastructural studies on the reproductive system of progenetic Diplocotyle olrikii (Cestoda, Spathebothriidea): Ovarian tissue 199-207.
Ba Cheikh T., Ba Aissatou and Marchand Bernard - Ultrastructure of the spermatozoon of Paroniella reynoldsae (Cyclophyllidea, Davaineidae) an intestinal parasite of Corvus albus (Aves, Corvidae) 208-214.
Luque Jose L., Martins Amanda N. and Tavares Luiz E.R. - Community structure of metazoan parasites of the yellow Cururu toad, Bufo ictericus (Anura, Bufonidae) from Rio de Janeiro, Brazil 215-220.
Vervaeke Muriel, Dorny Pierre, De Bruyn Luc, Vercammen Francis, Jordaens Kurt, Van Den Berge Koen and Verhagen Ron - A survey of intestinal helminths of red foxes (Vulpes vulpes) in northern Belgium 221-227.
Masan Peter and Stanko Michal - Mesostigmatic mites (Acari) and fleas (Siphonaptera) associated with nests of mound-building mouse, Mus spicilegus Petenyi, 1882 (Mammalia, Rodentia) 228-234.
Humiczewska Miroslawa and Rajski Krystian - Lipids in the host-parasite system: Digestive gland of Lymnaea truncatula infected with the developmental stages of Fasciola hepatica 235-239.
Semyenova Seraphima K., Morozova Elena V., Vasilyev Vasiliy A., Gorokhov Vladimir V., Moskvin Aleksandr S., Movsessyan Sergey O. and Ryskov Alexey P. - Polymorphism of internal transcribed spacer 2 (ITS-2) sequences and genetic relationships between Fasciola hepatica and F. gigantica 240-243.
Kuk Salih, Kaplan Mustafa, Ozdarendeli Aykut, Tonbak Sukru, Felek Suleyman and Kalkan Ahmet - Fasciola hepatica cathepsin L1 from a Turkish isolate is related to Asiatic isolates 244-248.
Hiszczynska-Sawicka Elzbieta, Kur Jozef, Pietkiewicz Halina, Holec Lucyna, Gasior Artur and Myjak Przemyslaw - Efficient production of the Toxoplasma gondii GRA6, p35 and SAG2 recombinant antigens and their applications in the serodiagnosis of toxoplasmosis 249-254.
Horvath Katalin N., Szenasi Zsuzsanna, Danka Jozsef and Kucsera Istvan - Value of the IgG avidity in the diagnosis of recent toxoplasmosis: A comparative study of four commercially available anti-Toxoplasma gondii IgG avidity assays 255-260.

RESEARCH NOTES

Knopf Klaus and Holker Franz - First report of Philometra obturans (Nematoda) and Neoergasilus japonicus (Copepoda) in Germany 261-262.
Beldomenico Pablo M., Kinsella John M., Uhart Marcela M., Gutierrez Gabriela L., Pereira Javier, Ferreyra Hebe del Valle and Marull Carolina A. - Helminths of Geoffroy's cat, Oncifelis geoffroyi (Carnivora, Felidae) from the Monte desert, central Argentina 263-266.

REVIEW ARTICLE

Eiras Jorge C. - An overview on the myxosporean parasites in amphibians and reptiles 267-275.

ORIGINAL PAPERS

Hassanine Reda M. El-S. - Trematodes from Red Sea fishes: Gibsonius aegyptensis gen. nov., sp. nov. (Lepocreadiidae Odhner, 1905) and Helicometra interrupta sp. nov. (Opecoelidae Ozaki, 1925) 276-280.
Bray Rodney A., Webster Bonnie L., Bartoli Pierre and Littlewood D. Timothy J. - Relationships within the Acanthocolpidae Luhe, 1906 and their place among the Digenea 281-291.
Poddubnaya Larisa G., Mackiewicz John S., Swiderski Zdzislaw, Brunanska Magdalena and Scholz Tomas - Fine structure of egg-forming complex ducts, eggshell formation and supporting neuronal plexus in progenetic Diplocotyle olrikii (Cestoda, Spathebothriidea) 192-304.
Swiderski Zdzislaw, Mlocicki Daniel, Eira Catarina, Miquel Jordi, Grytner-Ziecina Barbara and Mackiewicz John S. - Vitellogenesis in Mosgovoyia ctenoides (Railliet, 1890) Beveridge, 1978 (Cyclophyllidea, Anoplocephalidae) 305-311.
Swiderski Zdzislaw, Brunanska Magdalena, Mlocicki Daniel and Conn David Bruce - Ultrastructure of the oncospheral envelopes in the pseudophyllidean cestode Eubothrium salvelini (Schrank, 1790) 312-318.
Moravec Frantisek, Simkova Andrea, Hanzelova Vladimira, Spakulova Marta and Cakic Predrag - Philometroides barbi sp. nov. (Nematoda, Philometridae) from Barbus meridionalis, a new philometrid from European freshwater fish 319-322.
Moravec Frantisek and Justine Jean-Lou - Two species of Philometra (Nematoda, Philometridae) from serranid fishes off New Caledonia 323-331.
Reif Kathryn E., Carreno Ramon A. and Tuhela Laura - SEM observations on Leidynema portentosae Van Waerebeke, 1978 (Nematoda, Oxyurida) from Gromphadorhina portentosa (Insecta, Blattodea) 332-335.
Skoracki Maciej - A new genus of ectoparasitic mites of the family Syringophilidae (Acari, Cheyletoidea) from the treeswifts (Apodiformes, Hemiprocnidae) 336-343.
Moczon Tadeusz and Swietlikowska Agnieszka - Acetylcholinesterase from mature Hymenolepis diminuta (Cestoda) 344-351.
Kabata Zbigniew - Lernanthropus lativentris Heller, 1865 (Copepoda, Lernanthropidae) of Pillai (1985) recognised as a new species 352-354.

BOOK REVIEW

Swiderski Zdzislaw and Georgiev Boyko B. - Keys to the Trematoda. Volume 2 (Eds. A. Jones, R.A. Bray and D.I. Gibson). CABI Publishing and The Natural History Museum, Wallingford, UK, 2005, ISBN 0 85199 587 X, pp.768 355.

Contents of Volume 50, 2005 - I
Index of Authors - V
Acknowledgements - VIII