TAXONOMICAL AND ECOLOGICAL STUDIES ON THE LUNG FLUKE, PARAGONIMUS IN THE PACIFIC AREA, WITH SPECIAL REFERENCE TO SOUTH-EAST ASIA
Technical Report,01 May 1967,01 May 1968
KYUSHU UNIV FUKUOKA (JAPAN) FUKUOKA Japan
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During past one year the following results were obtained 1 As the host of P. miyazakii, a small snail, Bythinella nipponica akiyoshiensis was first determined by experiments. In addition, this snail was proved to be less susceptible to P. ohirai and non-susceptible to P. westermani. 2 The brown rat, Rattus norvegicus and the wild boar, Sus scrofa leucomystax were revealed to be the final host of P. miyazakii. 3 P. sadoensis was found as a new lung fluke on Sado Island, Niigata prefecture, which was proved to be able to mature in the albino rat, Rattus norvegicus, R. rattus, Mus molossinus and the dog. 4 Tricula minima was decided as the snail host of P. sadoensis. Its cercaria was first studied under the scanning electron microscope. 5 In Thailand, P. harinasutai was discovered as a new lung fluke, the metacercaria of which was abundantly parasitic in a crab, Potamon smithianus. Its egg was similar to that of P. westermani in morphology. 6 In Malaysia, two kinds of crab, Parathelphusa maculata and Potamicus cognatus were added to the list of the crab host for P. westermani. 7 In Indonesia, India and USSR, the existence of P. westermani was re-confirmed. 8 In Mexico, two species of Paragonimus were recognized, and one was most probably a new species and the other was similar to the new fluke found in Colombia.
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