Haplotype network for isolates of echinostoma revolutum sensu lato. Review of the echinostoma species in the revolutum group in terms of morphological features, morphometrics, hostparasite relationships, and geographic distribution 3,1828 revealed that our specimens resembled most closely e. Echinostoma is a genus of trematodes, which can infect both humans and other animals. The taxonomic status of two species, echinostoma revolutum and echinoparyphium recurvatum, which commonly infect poultry and other birds, as well as human, is. The trematode fluke, also known as the echinostoma revolutum, starts off as an egg which is unable to move. Only five species were considered valid in the most recent revision of the group but recent molecular studies have demonstrated a higher diversity. Echinostomatidae are common, widely distributed intestinal parasites causing significant disease in both animals and humans worldwide.
In order to hatch, this egg has to be exposed to the sun kanev 1994. Criteria for species determination in the revolutum group. However, no information is available about human e. Research open access new cryptic species of the revolutum. Echinostoma is an important genus that includes many parasites. The biodiversity heritage library works collaboratively to make biodiversity literature openly available to the world as part of a global biodiversity community. Out room lab diagnosis fasciola hepatica, cercaria w. Files are available under licenses specified on their description page.
Published also as university of california publications in zoology. Impact of eutrophication on wood frog, rana sylvatica, tadpoles infected with echinostoma trivolvis cercariae. An outbreak of echinostomiasis was reported among us travelers. 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. Figure 2 from effect of echinostoma friedi trematoda. Flukes echinostoma ppt9 phylum platyhelminthes ii class. The life cycle of echinostoma revolutum froelich john christopher johnson on.
Echinostoma n a taxonomic genus within the family echinostomatidae trematode parasites that can infect humans and other animals, causing echinostomiasis. The most common of the 15 reported echinostoma species in humans are e. View flukes echinostoma ppt9 from biol 4233 at university of north carolina, charlotte. It is then able to swim to its host which has to be a snail kortbawi et al. Clinical and pathological effects of echinostoma revolutum. The journal of parasitology is the official publication of the american society of parasitologists asp. Echinostoma slide home echinostoma slide 20200425 20200425 tagged trematoda pbl8 digestive trematodes parasitology lec flukes. Glycine max soybean agglutinin sba, dolichos biflorus agglutinin dba, and arachis. Criteria for species determination in the revolutum. Experimental studies on echinostoma revolutum froelich a fluke from birds and mammals by beaver, paul chester, 1905publication date. All structured data from the file and property namespaces is available under the creative commons cc0 license.
Recent molecular studies indicate the existence of more species than previously considered valid, thus stressing the need for wider taxon sampling from natural host. Mold, mold toxin frequencies other molds and mold toxins aflatoxin cytochalasin b ergot griseovulvin sorghum syrup sterigmatocystin zearalenone slime molds argyria lycogala stemonitis khz 177, 188 77, 91 295 288 277 88, 96, 3, 126 100 khz 81 126 211 bacteria and viruses including locations where i commonly found them low freq khz high freq. Pathology of extraintestinal infection in the golden hamster. Found largely in southeast asia and the far east, echinostomiasis is transmitted through the ingestion of one of several possible intermediate hosts, which could include snails or other mollusks, certain. 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. The life cycle of echinostoma revolutum froelich by johnson, john christopher. Echinostomes family echinostomatidae are intestinal trematodes of birds and mammals, including. Details the life cycle of echinostoma revolutum froelich. The first reported human infection was in taiwan in 1929. The largescale screening revealed infections with five echinostoma spp.
The systematics of echinostomes within the socalled revolutum group of the genus echinostoma, which encompasses the typespecies e. 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. The infection was diagnosed by finding the characteristic eggs in stool samples collected over a 2week period following their return to kenya. Triticum, vulgaris agglutinin wga, ulex europaeus agglutinin i ueai, ricinus communis agglutinin i rcai. International journal for parasitology, 18, 873 874. 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. Lifecycle, delimitation and redescription of echinostoma revolutum.
Experimental studies on echinostoma revolutum froelich a. Adult worms were identified as echinostoma revolutum. Important taxonomic features are discussed and hitherto unknown characteristics are described. Observations on the life histories of euparyphium murinum tubangui, 1931, and echinostoma revolutum froelich, 1802, trematoda turangui, marcos a on. Paramphistomum cervi gigantocotyle explanatum cotolyphoron cotolyphorum echinostoma malayanum fasciolopsis buski isoparorchis hypselobagri gartrodiscoides hominis echinostoma revolutum 10. New cryptic species of the revolutum group of echinostoma. Echinostoma revolutum is the most widely distributed species of all 20 echinostomatidae species. Once it emerges from the egg, it turns into a larva. Echinostoma iliocanum definition of echinostoma iliocanum. The taxonomic status of two species, echinostoma revolutum and echinoparyphium recurvatum, which commonly infect poultry and other birds, as well as human, is problematical. The journal of parasitology publishes on basic or applied aspects of general, veterinary, or medical parasitology, and epidemiology. Based on the specimens obtained, each stage of the lifecycle has been redescribed.
Experimental studies on echinostoma revolutum froelich a fluke from birds and mammals. Echinostoma revolutum infection in children, pursat province. Echinostoma revolutum species complex, molecular and morphological data, nad1, 28s rdna, europe. Moreover, various species of freshwater snails have been reported to play a dual role of the first and. It was first discovered as an intestinal fluke of ducks but is now known to infect a variety of avian and mammalian species, including geese, muskrats, and humans. The most frequently encountered zoonotic species, echinostoma hortense and e. A small group of travellers became infected with echinostoma sp.
Lifecycle, delimitation and redescription of echinostoma. The length and width of adult echinostoma varies between species, but they tend to be approximately 210mm. Details experimental studies on echinostoma revolutum. Echinostoma are internal digenean trematode parasites which infect the intestines and bile duct of their hosts. Recent molecular studies indicate the existence of more species than previously considered valid, thus stressing the need for wider taxon sampling from. The first intermediate host is always a snail families planorbidae, lymnaeidae, and bulinidae, and the major competent intermediate hosts vary by. The newlygenerated nad1 sequences from europe fall into six distinct. Publication date 1919 topics echinostoma revolutum.
In spite of their importance, the taxonomy of these echinostomes is still controversial. Some important body parts of the echinostoma revolutum are the oral sucker os label in photo above, the armed collar cl label in photo above, the cirrus sac cs label in photo above, ventral sucker or acetabulum ac label in photo above, uterus containing eggs ut label in photo above, ovary ov label in photo above, paired testes te. Echinostoma slide 20200425 20200425 tagged trematoda pbl8 digestive trematodes parasitology lec flukes. Echinostomatidae in the golden hamster, mesocricetus auratus volume 93 issue 3 jane e. The journal focuses on general parasitology, as well as parasites of medical, veterinary, and economic importance. Experimental studies on echinostoma revolutum froelich a fluke from birds and mammals by beaver, paul chester, 1905publication date 1937 topics echinostoma revolutum, parasites, parasites. Clinical and pathological effects of echinostoma revolutum digenea. Cotolyphoron cotolyphorum echinostoma malayanum fasciolopsis buski isoparorchis hypselobagri gartrodiscoides hominis echinostoma revolutum 10.
Echinostoma definition of echinostoma by medical dictionary. Impact of eutrophication on wood frog, rana sylvatica. Echinostoma revolutum indicated the lowest divergence rate to e. The lifecycle of echinostoma revolutum froelich, 1802 dietz, 1909 has been completed experimentally beginning with infected snails collected at the typelocality, near erlangen, germany. Echinostomiasis cases have been commonly found in north and northeastern parts of thailand 57. Echinostoma revolutum is a trematode that can be parasitic in humans. More than 50% of the stool samples collected in northern thailand residents contained echinostome eggs. Human echinostomiasis is an intestinal parasitic disease caused by one of at least sixteen trematode flukes from the genus echinostoma. Genetic characterization of echinostoma revolutum and. Echinostomatidae revealed by molecular and morphological data simona georgieva1, christian selbach2, anna faltynkova1, miroslava soldanova1,2, bernd sures2, karl skirnisson3 and aneta kostadinova1,4 abstract. Echinostoma ekinostoma, a genus of digenetic flukes family echinostomatidae with characteristic oral spines. Eating raw snails and tadpoles was identified as an important mode of transmission. The infection was diagnosed by finding the characteristic eggs in stool samples collected over a. Pdf comparative mitogenomics of the zoonotic parasite.
Echinostomes family echinostomatidae are intestinal flukes of birds and mammals, including humans 1,2. Echinostoma recurvatum trematode fluke parasites support. Department of microbiology and parasitology ppt download pdf parasite influences on host life history. Lipid metabolism in parasitic helminths pdf free download. It has been in print continuously since 1914, when it was founded by henry baldwin ward. Echinostoma revolutum infection in children, pursat.
Ty book ti the life cycle of echinostoma revolutum froelich. The adult flukes were elongated, ventrally curved, and 5. Unlike some other reproductions of classic texts 1 we have not used ocroptical character recognition. Echinostoma revolutum, the most widely distributed species, is found from asia and oceania to europe and the americas. This page was last edited on 11 august 2018, at 19. New cryptic species of the revolutum group of echinostoma digenea.