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- W2501652939 abstract "The elucidation of life cycles of the trematodes belonging to the subfamily DICROCOELIINAE Looss, 1899, is a comparatively recent event, although since the time of Leuckart (1888) and Piana (1882) experimenters have tried to infect snails with eggs of Dicrocoelium dendriticum. The work of Vogel (1929) and Cameron (1931) identified Cercaria vitrina v. Linstow, 1887 as the larval stage of D. dendriticum, and involved land snails as the intermediate hosts. Mattes (1933 and 1936) showed the complete development of this trematode in its molluscan intermediary, and Neuhaus (1936, 1938) discovered the composite cysts of the cercariae and the method of infection of the definitive host. Thus the life cycle of D. dendriticum was made known. Influenced by these investigations, studies on the life cycles of other dicrocoeliid species soon followed. The investigations of Denton (1944 and 1945) on the life cycle of Eurytremna procyonis [= Concinnum procyonis (Denton, 1942) Travassos, 1944] and Brachylecithum americanum, ahd of Maldonado (1945) on that of Platynosomum fastosum brought important results revealing considerable differences in the habits of different species in this group. The involvement of an insect host for B. americanum and a lizard for P. fastosulm, in contrast to D. dendriticum which requires no second intermediate host, indicated the varied adaptation of this most interesting group of trematodes and encouraged further researches on the life cycles of additional species. The present investigation on the biology of Eurytrema pancreaticum was started in Shao-wu, northwestern Fukien in 1944, and was later continued in Foochow, where the parasite is very common. In 1948, the writer was able to obtain both experimental and natural infections of snail hosts, enabling him to study the intra-molluscan phase of the development of this trematode. He was, however, unable to produce an experimental infection in goats through feeding them with mature second generation sporocysts secured from infected snails. Eurytrema pancreaticum has been recorded from the pancreatic and biliary passages of various animals such as the ox, water buffalo, sheep, and goat in the Orient. It is also common in the pancreatic duct of hogs in Hongkong and occurs less commonly in camels in North China and in the monkey, Macaca syrichta fascicularis. This common trematode was recorded once from man in South China by Castellani and Chalmers (Faust, 1949, p. 206). Its distribution is extensive, being reported in China, Japan, Indo-China, India, Malay Archipelago, and the Philippines." @default.
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- W2501652939 date "2016-01-01" @default.
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- W2501652939 title "STUDIES ON THE LIFE HISTORY OF EURYTREMA" @default.
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