. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. HUMAN LIVER FLUKES 225 of Shanghai. It is also found in the liver ducts of cats, hogs, and probably other flesh-eating animals. It is from one-half to three-quarters of an inch in length, and nearly four times as long as wide. The ventral sucker is very small, and is situated on the anterior third of the body. Some authors believe that a small variety of this fluke found in Japan constitutes another species, C. endemicus, but this view is assailed by recent investigations. In Europe there occurs a speci
. Animal parasites and human disease. Medical parasitology; Insects as carriers of disease. HUMAN LIVER FLUKES 225 of Shanghai. It is also found in the liver ducts of cats, hogs, and probably other flesh-eating animals. It is from one-half to three-quarters of an inch in length, and nearly four times as long as wide. The ventral sucker is very small, and is situated on the anterior third of the body. Some authors believe that a small variety of this fluke found in Japan constitutes another species, C. endemicus, but this view is assailed by recent investigations. In Europe there occurs a species, Opisthorchis felineus (Fig. 75A), which is very common in domestic cats and dogs and is by no means uncommon in man; there is one record of its having been found in eight or nine out of 124 post mortem examina- tions in Siberia. A very closely related species, 0. pseudofelineus (Fig. 75B), has been found in cats and coyotes in the central parts of the United States. From its similarity to the Old World species it would not be surprising to find it occasionally parasitic in man. The European species, Opisthorchis felineus, is usually a little less than half an inch in length, and shaped very much like Clonorchis sinensis. The American 0. pseudofelineus is somewhat longer and slenderer than the European species. Another species of the same genus, 0. noverca, occurs commonly in pariah dogs in India, and occasionally in man. It differs from the Euro- pean species chiefly in having the skin thickly beset with Fig. 75. A, Cat fluke, Opisthorchis felineus; B, American cat fluke, O. pseudofelineus. Abbre- viations as in Fig. 74. X about 5. (A, after Stiles and Hassall; B, after Stiles.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chandler, Asa Crawford, 1891-. New York, J. Wiley
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