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- W2427882906 abstract "first scholarly review of the family and described four new species. During the next 12 years workers in America (Stunkard, 1926a, 1926b, 1928; MacCallum, 1926; Price, 1934; and Luhman, 1935), in Europe (Ejsmont, 1927), and in India (Mehra, 1933, 1934; Thapar, 1933; and Sinha, 1934) described new species, reduced others to synonomy, and juggled others between genera, often on the basis of insufficient evidence. Byrd (1939) restored order to a confused situation, and in a review of the family recognized only 8 valid genera of the 17 then extant; he also described 9 new species. Four life histories have been completed experimentally in the laboratory. The first was that of Spirorchis parvus (Stunkard, 1923) from the painted turtle by Wall (1939, 1940, 1941a). Wall (1941b) later determined the cycle of S. elephantis (Cort, 1917) also from the painted turtle. In 1951 he described the cycle of Vasotrema robustum (Stunkard, 1928) from the soft-shell turtle. The fourth cycle, by Pieper (1953), was that of S. artericola (Ward, 1921) also from painted turtles. The present paper depicts the life history of Spirorchis elegans Stunkard, 1923, described originally from two specimens taken from Pseudemys elegans Weid from Illinois. Cercariae shed from snails collected at the old Decatur reservoir, DeKalb County, Georgia, were tentatively identified as spirorchiid cercariae; subsequent laboratory studies proved that these larvae penetrated turtles and became adult worms referable to the species S. elegans. Painted turtles, Chrysemnys picta picta (Schneider), also captured at the Decatur reservoir, had adult S. elegans in the vascular system and eggs in the tissues. It was these eggs which were used to establish the experimental infections in laboratory raised snails. MATERIALS AND METHODS Twenty-six baby painted turtles, Chrysemys p. marginata Agassiz, were used in the present investigation. Experimental turtles, average carapace length 34 mm, were obtained from a commercial dealer in Wisconsin (E. G. Steinhilber and Co., Box 888, Oshkosh). Ten turtles from this lot, selected randomly and serving as controls, proved free of any helminth infection after 7 months in the laboratory; in fact, some still had remnants of the yolk sac at this time, indicating that they were recent hatchlings at the time of original receipt." @default.
- W2427882906 created "2016-06-24" @default.
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- W2427882906 date "2016-01-01" @default.
- W2427882906 modified "2023-09-27" @default.
- W2427882906 title "(TREMATODA: SPIRORCHIIDAE) FROM THE PAINTED TURTLE*" @default.
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