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Echinostoma and Echinostomiasis
1990Publisher Summary This chapter discusses the studies on the biology, life history, infectivity, immunology, pathology, epidemiology, physiology, and biochemistry of Echinostoma . Some studies on other genera of Echinostomatidae are considered as they relate to Echinostoma. The systematics of the 37-collar-spined Echinostoma in the E. revoluturn
J E, Huffman, B, Fried
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Journal of Parasitology, 2001
Among the large cells located in the posterior of Echinostoma caproni and E. paraensei miracidia are secretory cells, germinal cells (GC), and undifferentiated cells. Secretory cells do not give rise to progeny, whereas GC do. Undifferentiated cells develop into GC that can also divide to produce embryos. Cleavage of GC of E.
G L, Ataev +3 more
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Among the large cells located in the posterior of Echinostoma caproni and E. paraensei miracidia are secretory cells, germinal cells (GC), and undifferentiated cells. Secretory cells do not give rise to progeny, whereas GC do. Undifferentiated cells develop into GC that can also divide to produce embryos. Cleavage of GC of E.
G L, Ataev +3 more
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The Journal of Parasitology, 1991
Laboratory-reared planarians, Dugesia tigrina, were exposed to cercariae of Echinostoma trivolvis or Echinostoma caproni. Of 100 D. tigrina exposed to 2,750 cercariae of E. trivolvis, 29 were infected with a total of 85 encysted metacercariae 24 hr postinfection (PI). None of 40 D. tigrina exposed to 1,100 cercariae of E.
B, Fried, L C, Rosa-Brunet
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Laboratory-reared planarians, Dugesia tigrina, were exposed to cercariae of Echinostoma trivolvis or Echinostoma caproni. Of 100 D. tigrina exposed to 2,750 cercariae of E. trivolvis, 29 were infected with a total of 85 encysted metacercariae 24 hr postinfection (PI). None of 40 D. tigrina exposed to 1,100 cercariae of E.
B, Fried, L C, Rosa-Brunet
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International Journal for Parasitology, 1991
The infectivity and distribution of Echinostoma trivolvis were studied in female ICR mice each infected with 25 metacercarial cysts. At 7 and 10 days post-exposure worm recoveries were 58.8 and 58.4%, respectively. Worm recovery declined to 38.2% by day 14, to 6.4% by day 21, and 0% by day 28.
M S, Weinstein, B, Fried
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The infectivity and distribution of Echinostoma trivolvis were studied in female ICR mice each infected with 25 metacercarial cysts. At 7 and 10 days post-exposure worm recoveries were 58.8 and 58.4%, respectively. Worm recovery declined to 38.2% by day 14, to 6.4% by day 21, and 0% by day 28.
M S, Weinstein, B, Fried
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International Journal for Parasitology, 1997
Studies were done to determine specific differences between adults of Echinostoma revolutum and Echinostoma trivolvis grown singly and concurrently in domestic chicks. Worm recovery at 10-21 days post-infection (p.i.) of E. revolutum and E. trivolvis in singly infected chicks was 21 and 17%, respectively; in concurrent infections, worm recovery for E ...
B, Fried, T J, Mueller, B A, Frazer
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Studies were done to determine specific differences between adults of Echinostoma revolutum and Echinostoma trivolvis grown singly and concurrently in domestic chicks. Worm recovery at 10-21 days post-infection (p.i.) of E. revolutum and E. trivolvis in singly infected chicks was 21 and 17%, respectively; in concurrent infections, worm recovery for E ...
B, Fried, T J, Mueller, B A, Frazer
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The Journal of Parasitology, 1991
An isoenzymatic analysis using thin-layer agarose gel isoelectrofocusing on laboratory strains of Echinostoma trivolvis and Echinostoma caproni adults showed characteristic monomorphic phenotypes for phosphoglucomutase and glucose phosphate isomerase.
A R, Kristensen, B, Fried
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An isoenzymatic analysis using thin-layer agarose gel isoelectrofocusing on laboratory strains of Echinostoma trivolvis and Echinostoma caproni adults showed characteristic monomorphic phenotypes for phosphoglucomutase and glucose phosphate isomerase.
A R, Kristensen, B, Fried
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Histochemical Glycogen Studies on Echinostoma revolutum
The Journal of Parasitology, 1968Histochemical studies were made to determine if Echinostoma revolutum depletes its glycogen reserves in a non-nutrient medium and resynthesizes the polysaccharide when placed in a nutrient medium or on the chick chorioallantois. The periodic acid Schiff technique on lipid-free cryostat sections of adult worms revealed that glycogen was depleted ...
B, Fried, M D, Kramer
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Sterols of Echinostoma revolutum (Trematoda) Adults
The Journal of Parasitology, 1985diate hosts (Hopkins, 1954, Journal of Parasitology 40: 29-31; Wardle, 1980, Bulletin of Marine Science 30: 737-743). Adult worms develop in hindguts of marine fish, Archosargus probatocephalus (Walbaum), which feed on hooked mussels (Wardle, 1980, loc. cit.). Although metacercariae are well developed in I.
D J, Chitwood, W R, Lusby, B, Fried
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Studies on Encystment of Echinostoma revolutum Cercariae
The Journal of Parasitology, 1979Cercariae of Echinostoma revolutum encysted in the kidney of the snail Physa heterostropha within 1 hr and on mucus trails from Helisoma trivolvis, P. heterostropha and Lymnaea sp. within 2 hr. Significantly, more normal cysts were formed in mucus of Helisoma than in mucus of Physa or Lymnaea. Optimal, in vitro encystment occurred within 24 h in either
B, Fried, M C, Bennett
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Oxygen consumption in adult Echinostoma revolutum
Experimental Parasitology, 1968Abstract Seven- to 28-day-old Echinostoma revolutum adults (Trematoda) from chicks consume oxygen in vitro independently of light, age, exogenous glucose, and exogenous 2-deoxyglucose. Cyanide reduces worm oxygen consumption and activity. E. revolutum is red in situ and with in vitro aerobiosis.
J L, Taft, B, Fried
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