Dr. Murai Éva szerk.: Parasitologia Hungarica 18. (Budapest, 1985)

Parasit, hung. 18. 1985 Amphistomes of Vietnamese vertebrates (Trematoda: Amphistomida) Dr. Ottó SEY Department of Zoology, Janus Pannonius University, Pécs, Hungary "Amphistomes of Vietnamese vertebrates (Trematoda: Amphistomida). - SEY, O. - Parasit, hung., 18: 17-24. 1985. ABSTRACT. An examination of the amphistomes of Vietnamese vertebrates, based on original test material, revealed 28 species. Four of them were found in fishes, two in amphibians and 22 in mammals. Surface topography, histomorphological structure of the muscular organs of certain species have been studied and a parasite/host and a host/parasite check-list have been compiled. KEY WORDS. Amphistomes, Vietnamese vertebrates, scanning electron microscopy, histomorphology of muscular organs, parasite/host and host/parasite check-lists. Reviewing relèvent literature data referring to the amphistomes of Viet Nam or the neighbouring area previously called Indochina, one experiences that varying interest has been rayed to the study of amphistomes of lower and higher vertebrates. While numerous reports have been published on the amphistomes of mammals (BARROIS, 1908; RAILLIET, 1924; HOUDEMER, 1938; DOLLFUS, 1963; DROZDZ and MALCZEWSKI, 1967; SEGAL et al. , 1968; THAN THÉ VIET et al. , 1977; SEY, 1980, 1983, 1985), there are few on the amphistomes of fishes and amphibians (HA KI, 1969; ODENING, 1968; SEY, 1986a). These studies revealed 42 species: Amurotrema dombrowkajae Achmerow, 1959; Neocladorchis multilobu lar! s Sey, 1986; Platycladorchis microace

tabuiaris Sey, 1986; P. macroacetabularis Sey, 1986; Diplodiscus amphichrus Tubangui, 1938; D. mehrai Pande, 1937; Watsonius noci (Barrois, 1908); Hawkesius hawkesi (Cobbold, 1875); Homalogaster paloniae Poirrier, 1883; Gastrodiscoides hominis (Lewis et McConnel, 1876); Paramphistomum cervi (Zeder, 1790); P. epiclitum Fischoeder, 1904; P. ichikawai Fukui, 1922; P. gotoi Fukui, 1922; P. liorchis Fischoeder, 1901; Calicophoron calicophorum (Fischoeder, 1901); C. microbothrioides (Price et Mcintosh, 1944); C. cauliorchis (Stiles et Goldberger, 1910); C. ijimai (Fukui, 1922); C. papillosum (Stiles et Goldberger, 1910); Orthocoelium scoliocoelium (Fischoeder, 1901); O. orthocoelium (Fischoeder, 1901); O. dicranocoelium (Fischoeder, 1901); O. strep- tocoelium (Fischoeder, 1901); O. dinniki Eduardo, 1982; O. saccocoelium Sey, 1980; Cotyl

ophoron cotylophorum (Fischoeder, 1901); C. indicum Stiles et Goldberger, 1910; Explana- tum explanatum (Creplin, 1847); E. anisocotyle (Faust, 1920); E. bathycotyle (Fischoeder, 1901); Gigantocotyle formosanum (Fukui, 1929); G. fraternum (Stiles et Goldberger, 1910); C

armyerius spatiosus (Brandes, 1898); C. bulbosus Sey, 1985); C. synethes (Fischoeder, 1901); Gastrothylax crumenifer (Creplin, 1847); G. glandiformis Yamaguti, 1939; G. minu- tus Fischoeder, 1901; Fischoederius cobboldi (Poirrier, 1883); F.elongatus (Poirrier, 1833); F.japonicus Fukui, 1922. With a few exceptions (SEY, 1983, 1985 ) these examinations were mainly based on gross morphological observations, whereas it is generally accepted that modern diagnosis of amphistomes cannot be accomplished without a knowledge of the structure of the muscular organs. Our examinations, which have also been extended to histomorphological traits, confirmed, on the one hand, the occurrence of the majority of the previously described species, and on the