L. Forró szerk.: Miscellanea Zoologica Hungarica 9. 1994 (Budapest, 1994)

Sey, O.; Prasitirat, P.: Amphistomes (Trematoda, Amphistomida) of cattle and buffalo in Thailand

MISCELLANEA ZOOLOGICA HUNGARICA Tomus 9. 1994 p. 11-17 Amphistomes (Trematoda, Amphistomida) of cattle and buffalo in Thailand by O. Sey and P. Prasitirat (Received April 18, 1994) Abstract: Examinations aiming at the recovery of amphistomes of cattle and buffalo in Thailand have revealed ten species belonging to the families Gastrothylacidae: Gastrothylax crumenifer (Creplin, 1847), Carmyerius spaüosus (Brandes, 1898), Fischoederius elongatus (Poirier, 1883) and Paramphistomidae: Orthocoelium streptocoelium (Fischoeder, 1901), Orthocoelium dicranocoelium (Fischoeder, 1901), Orthocoelium parvipapillatum (Stiles & Goldberger, 1910), Paramphistomum epiclitwn, Fischoeder, 1904, Paramphistomum ichikawai, Fukui, 1922, Explanation explanation (Creplin, 1847) and Calicophoron calicophorum (Fischoeder, 1901). Six of them, G. crumenifer, C. spatiosus, O. streptocoelium, O. dicranocoelium, Paramphistomum epiclitwn and P. ichikawai are new locality records. Key words: Amphistomes, Gastrothylacidae, Paramphistomidae, cattle, buffalo, Thailand The first amphistome species described from Thai ruminants were probably Paramphistomum siamense Stiles & Goldberger, 1910 and Fischoederius siamensis Stiles & Goldberger, 1910, now they are regarded as synonyms of Explanatum explanatum (Creplin, 1847) and Fischoederius elongatus (Poirier, 1883) respectively. Later, Railliet (1924) described Paramphistomum (= Orthocoelium) parvipapillatum Stiles & Goldberger, 1910 from cattle. Recently, Lee & Lowe (1971) recovered F elongatus, F. cobboldi and O. orthocoelium (Fischoeder, 1901) from cattle and buffalo. More recently, Eduardo (1983) found Calicophoron calicophorum in Thai cattle. Identification of the species was based upon the structure of the muscular organs (acetabulum, terminal genitalium, pharynx) outlined by Näsmark (1937), Eduardo (1982, 1983) and Sey (1991). Due to their taxonomic value the structure of these organs is illustrated. Materials and Methods The test material was collected by one of us (P.P.) in abattoirs of Bangkok and Singkuri Province, Thailand. After removal from the rumen and the bile ducts the flukes were treated with saline and put immediately into fixative solution (70% alcohol). Whole mounts as well as histological sections were prepared as described elsewhere (Sey 1991). All measurements are in mm.