Based on the specimens obtained, each stage of the lifecycle has been redescribed. Blouin department of zoology, oregon state university, 3029 cordley hall, corvallis, oregon 97331, usa. 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. Important taxonomic features are discussed and hitherto unknown characteristics are described. The margins of the perioral depressions and the surface of the arms bear. The most common of the 15 reported echinostoma species in humans are e. In order to hatch, this egg has to be exposed to the sun kanev 1994. The affected birds originated from market in kiambu district. Echinostomas are tiny tapeworms that infect your tcells one is e.
Echinostoma revolutum, australia, cambodia, egypt, lao pdr, russia, taiwan, thailand, snails, tadpoles and clams. 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. Echinostome infection in green frogs rana clamitansis. 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. It is then able to swim to its host which has to be a snail kortbawi et al. The first reported human infection was in taiwan in 1929. Observations on the life histories of euparyphium murinum tubangui, 1931, and echinostoma revolutum froelich, 1802, trematoda turangui, marcos a on. The largescale screening revealed infections with five echinostoma spp. The life cycle of echinostoma revolutum froelich by johnson, john christopher.
A total of 2,914 snails that belong to 12 species were examined, and 7. Examining the phylogenetic relationships of echinostome parasites in north america jillian t. Prevalence of the eight helminth taxa ranged from 2. Iceland have been published recently georgieva et al. Foodborne trematodiasis is an emerging public health problem, particularly in southeast asia and the western pacific region. Order echinostomida cercaria with simple tail and many cystproducing glands. Files are available under licenses specified on their description page.
The lifecycle of echinostoma revolutum froelich, 1802 dietz, 1909 has been completed experimentally beginning with infected snails collected at the typelocality, near erlangen, germany. Switch the device on, put the chip card in follow the direction arrow. Echinostoma is an important genus that includes many parasites. Recent molecular studies indicate the existence of more species than previously considered valid, thus stressing the need for wider taxon sampling from. Echinostoma definition of echinostoma by medical dictionary. Echinostoma n a taxonomic genus within the family echinostomatidae trematode parasites that can infect humans and other animals, causing echinostomiasis. Recent molecular studies indicate the existence of more species than previously considered valid, thus stressing the need for wider taxon sampling from natural host. Abstractthe occurrence of 37collar spined echinostome metacercariae in freshwater snails. Helminths, arthropods and protozoa of domesticated animals.
The first intermediate host is always a snail families planorbidae, lymnaeidae, and bulinidae, and the major competent intermediate hosts vary by. Echinostoma revolutum dalam saluran pencernaan itik yang telah diinfeksi jauh lebih tinggi dibandingkan trematoda lainnya notocotylus imbricatus dan paramonostomumsp. This article is from the korean journal of parasitology, volume 51. Echinostome infection in green frogs yale campuspress. Mar, 20 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. Echinostoma echinatum zeder 1803 sensu kanev digenea. New cryptic species of the revolutum group of echinostoma. Echinostoma revolutum infection in children, pursat province.
However, no information is available about human e. The prevalence of infection with echinostome flukes ranged from 7. Ay761143 ay761146 ay761145 u58098 u58100 echinostoma revolutum echinostoma sp. Echinostoma revolutum infection in children, pursat. We summarize the complex life cycle of foodborne trematodes and discuss its contextual determinants. Echinostoma malayanum definition of echinostoma malayanum. All structured data from the file and property namespaces is available under the creative commons cc0 license. The life cycle of echinostoma revolutum froelich john christopher johnson on. Freshwater snails as the second intermediate hosts in chiang mai, thailand. Effects of environmental change on helminth infections in amphibians. The reexamination of the voucher specimens identified by kanev et al. Frequen cy chip eyes au g according to raymond rife a nd dr.
Only five species were considered valid in the most recent revision of the group but recent molecular studies have demonstrated a higher diversity. The digenean species of echinostoma rudolphi, 1809 echinostomatidae with 37 collar spines that comprise the socalled echinostoma revolutum complex, qualify as cryptic sensu bickford et al. Although the present specimens resemble with type species echinostoma revolutum but are distinguished from it in having aspinose body, 38 collar spines, absence of. Minchella purdue university, biological sciences, lilly hall, 915 w state st, west lafayette, in 47907, usa. This category has the following 3 subcategories, out of 3 total. Human echinostomiasis is an intestinal parasitic disease caused by one of at least sixteen trematode flukes from the genus echinostoma. Echinostoma revolutum species complex, molecular and morphological data, nad1, 28s rdna, europe. Echinostoma recurvatum trematode fluke parasites support. Second edition v olume 1 lower metazoans and lesser. 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. Echinopluteus article about echinopluteus by the free.
Adult worms were identified as echinostoma revolutum. Echinoplutei have three to four pairs of long arms, a gut, and three pairs of coelomic saccules. Minchella purdue university, biological sciences, lilly hall, 915 w state st, west lafayette, in 47907, usa article info article history. Trumpey, chief scientific illustrator michael hutchins, series editor in association with the american zoo and aquarium association volume 1 title pages 102703 1. The most frequently encountered zoonotic species, echinostoma hortense and e. Once it emerges from the egg, it turns into a larva.
Information and translations of echinostoma in the most comprehensive dictionary definitions resource on the web. Echinostoma revolutum was recovered in the caeca and large 25. Thoney, advisory editor neil schlager, editor joseph e. 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 trematode fluke, also known as the echinostoma revolutum, starts off as an egg which is unable to move. An outbreak of echinostomiasis was reported among us travelers. Echinostoma ilocanum infection article pdf available in indian pediatrics 356. Unlike some other reproductions of classic texts 1 we have not used ocroptical character recognition. Echinostoma revolutum is the most widely distributed species of all 20 echinostomatidae species. Experimental studies on echinostoma revolutum froelich a. Echinostome infection in green frogs rana clamitansis stage and age dependent m. A comparison between mitochondrial dna and the ribosomal. Echinostoma revolutum, the most widely distributed species, is found from asia and oceania to europe and the americas. Echinostoma caproni echinostoma paraensei c a c lake victoria, kisumu, kenya central spain rio grande nature center, albuquerque, new mexico biomphalaria sudanica ciconia nigra physa sp.
Lifecycle, delimitation and redescription of echinostoma. Effects of environmental change on helminth infections in. Gluck equine research center university of kentucky. Experimental studies on echinostoma revolutum froelich a fluke from birds and mammals. Order plagiorchida cercaria typically armed with a stylet. Echinostomatidae is described from intestine of bird the black coot fulica atraof manchhar lake, sindh, pakis tan. A comparison between mitochondrial dna and the ribosomal internal transcribed regions in prospecting for cryptic species of platyhelminth parasites r.
Echinostoma is a genus of trematodes, which can infect both humans and other animals. This page was last edited on 11 august 2018, at 19. The device shows now automatically the content of c hip card. Echinostoma revolutum is a trematode that can be parasitic in humans. Revolutum which is also a neurological tapeworm it produces ad36 virus that can cause colds, may causes dramatic weight gain. The systematics of echinostomes within the socalled revolutum group of the genus echinostoma, which encompasses the typespecies e. What links here related changes upload file special pages permanent link page. Only five species were considered valid in the most recent revision of the group but recent molecular studies have demonstrated a higher diversity within the.
334 1131 332 396 1237 200 1191 618 394 1653 1033 417 692 645 450 777 549 421 1587 627 764 323 712 1330 404 812 1323 1561 771 1026 795 979 1523 831 9 927 1230 167 1182 295 791 773 994 1380 483 597 465 57 531 828