The taxonomic status of two species, echinostoma revolutum and echinoparyphium recurvatum, which commonly infect poultry and other birds, as well as human, is. Important taxonomic features are discussed and hitherto unknown characteristics are described. The digenean species of echinostoma echinostomatidae with 37 collar spines that comprise the socalled revolutum species complex, qualify as cryptic due to the interspecific homogeneity of characters used to differentiate species. Doi saket, hang dong, mae taeng, san kamphaeng, san pa tong, and saraphi fig. Fourthly, the original papers should be consulted in order that the correct origin of the material sequenced is identified. Pdf comparative mitogenomics of the zoonotic parasite. Echinostoma is a genus of trematodes, which can infect both humans and other animals. Files are available under licenses specified on their description page. Looking for online definition of echinostoma revolutum syn.
On a human case of echinostoma revolutum and its infection route. Freshwater snails were collected in both stagnant and running water bodies such as the pond, rice paddy, irrigation canal, stream, and river. Echinostoma revolutum was recovered in the caeca and large 25. Storage and incubation of echinostoma revolutum eggs. Adult flukes were harvested from experimentally infected hamsters at days 14 and 17 postinfection. The lifecycle of echinostoma bolschewense possible synonym e.
Echinostoma revolutum can be found in the snail lymnaea elodes in north america serensen et al. Freshwater snails as the second intermediate hosts in chiang mai, thailand. Small echinostoma revolutumendemic foci or a few cases of human infection were discovered in the peoples republic of china, indonesia, and thailand until 1994. We detected metacercariae of echinostoma revolutum in filopaludina sp. These fibres are not identical with the processes of epithelial cells. In spite of their importance, the taxonomy of these echinostomes is still controversial. Read cercarial chaetotaxy of echinostoma miyagawai ishii, 1932 digenea. Introduction 7 lifehistoryandmorphology 8 revolutum digenea. Echinostoma slide 20200425 20200425 tagged trematoda pbl8 digestive trematodes parasitology lec flukes. Echinostoma definition of echinostoma by medical dictionary. Echinostoma revolutum infection in children, pursat province. Echinostoma ilocanum pdf the most common of the 15 reported echinostoma species in humans are e.
Eom, cheongha yoon, muth sinuon, duong socheat, and soonhyung lee to determine the prevalence of helminthic infections in pursat province, cambodia, we. The life cycle of echinostoma revolutum froelich john christopher johnson on. The lifecycle of echinostoma revolutum froelich, 1802 dietz, 1909 has been completed experimentally beginning with infected snails collected at the typelocality, near erlangen, germany. Lymnaea truncatula as the first and second intermediate. The cysts of echinostoma trivolvis and sphaeridiotrema globulus, both of which encyst in snail intermediate hosts, have three layers gulka and fried, 1979. Echinostoma revolutum pdf they were compatible to echinostoma revolutum or echinostoma jurini, with only minor differences.
Based on the specimens obtained, each stage of the lifecycle has been redescribed. However, in the present study, we detected 2 live worms of echinostoma cinetorchis in the ascending colon of a korean man 68year old admitted to the gyeongsang national university hospital with complaint of. Lifecycle, delimitation and redescription of echinostoma. Only five species were considered valid in the most recent revision of the group but recent molecular studies have demonstrated a higher diversity. Lymnaea elodes snails collected in northern indiana, u. These intestinal flukes have a threehost life cycle with snails or aquatic organisms as intermediate hosts, and a variety of animals, including humans, as their definitive hosts echinostoma infect the gastrointestinal tract of humans, and can cause a disease known as echinostomiasis. Out room lab diagnosis fasciola hepatica, cercaria w. All structured data from the file and property namespaces is available under the creative commons cc0 license. A read is counted each time someone views a publication summary such as the title, abstract, and list of authors, clicks on a figure, or views or downloads the fulltext. Contribution to the distribution and the life history of echinostoma revolutum in central europe. To determine the prevalence of helminthic infections in pursat province, cambodia, we tested fecal specimens from 471 children, 1014 years of age, in june 2007. Adult worms were identified as echinostoma revolutum. The study areas occupied over 6 districts of chiang mai province. For organisms with complex life cycles, including several free.
Echinostoma revolutum infection in children, pursat province, cambodia woonmok sohn, jongyil chai, taisoon yong, keeseon s. Snails were collected in chiang mai province, thailand, during october 2011 to april 2012. The prevalence of infection with echinostome flukes ranged from 7. Assessing host competency between native and invasive.
A total of 2,914 snails that belong to 12 species were examined, and 7. The occurrence of 37collar spined echinostome metacercariae in freshwater snails was investigated in 6 districts of chiang mai province, thailand, from october 2011 to april 2012. The prevalence of echinostoma revolutum trematodes in taiwan during 19291979 varied from 0. Genetic characterization of echinostoma revolutum and. Unlike some other reproductions of classic texts 1 we have not used ocroptical character recognition. In the epidermis of cercaria hel ve tica v 11 are seen small, round structures, osmewhat resembling the rhabdites of turbellarians figs. Many animals including birds, carnivores, rodents, and humans may serve as definitive hosts for various echinostomid species. Echinostoma revolutum is a trematode that can be parasitic in humans. Echinostoma revolutum infection in children, pursat. Fasciolopsis, echinostoma, and heterophyes species are the trematodes that inhabit the human intestines.
Investigating echinostoma trivolvis radford university. Experimental studies on echinostoma revolutum froelich a. Davis investigating the eggs of echinostoma revolutum, a closely. Most of these were caused by echinostoma hortense infection. A partial life cycle from adult worm to metacercarial encystment in lymnaea tomentosa snails was completed in the laboratory. Echinostoma revolutum species complex, molecular and morphological data, nad1, 28s rdna, europe.
Echinostomatidae are common, widely distributed intestinal parasites causing significant disease in both animals and humans worldwide. Occurrence and lesions associated with echnostoma revolutum in free range indigenous chickens in kenya. The free encysting metacercaria of zygocotyle lunata has five layers robbins et al. Haplotype network for isolates of echinostoma revolutum sensu lato.
This page was last edited on 11 august 2018, at 19. Human cases of echinostomiasis have been sporadically diagnosed by extracting worms in the endoscopy in korea and japan. One hundred and fifty six 156 indigenous chickens were purchased from various farms 108 and markets 48 in. The complete mitochondrial sequence of 17,030 bp was obtained from echinostoma revolutum and characterized with those of previously reported members of the superfamily echinostomatoidea, i. The most frequently encountered zoonotic species, echinostoma hortense and e. It has been reported from germany, austria, poland, bulgaria, england, russia, malaysia, thailand, india, and vietnam kanev, 1994.