They were compatible to Echinostoma revolutum or Echinostoma jurini, with only minor differences. As the adults were recovered from both. Echinostoma ‘revolutum’ (Digenea: Echinostomatidae) species complex revisited: species delimitation based on novel molecular and. To determine the prevalence of helminthic infections in Pursat Province, Cambodia, we tested fecal specimens from children, 10–14 years of age, in June.

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Head crown distinct, well developed, with ventral ridge Fig. Assignment outcome is considered successful if the sequences exhibiting the lowest genetic distance edhinostoma matches are conspecific with the query sequence and the distance between the query and closest matches falls below a specified threshold.

Shown here are eggs EG within the size range for Echinostoma spp.


InBaudoin presented hypotheses to explain the correlation between host size and prevalence of infection. C An isolated metacercaria showing a well-developed oral sucker and head collar with collar spines arrowhead. Structures illustrated in this figure include: The close association of E.

Eggs hatch into miracidia Kanev, They were compatible to Echinostoma revolutum or Echinostoma juriniwith only minor differences.


In Cambodia, humans are commonly infected with intestinal nematodes and protozoa, including hookworms, Strongyloides stercoralisAscaris lumbricoidesTrichuris trichiuraand Giardia lamblia 67. IG was shared between cercarial isolates from R.

Genital pore median, preacetabular, followed by genital atrium. Baudoin, ; Brown, echnostoma al. They were collected from diverse habitats by handpicking and scooping methods.

Echinostoma revolutum – Wikipedia

Molecular phylogenetic analysis of the Microphalloidea Ward, Trematoda: The Korean Journal of Parasitology. The subsequent revplutum stages are all found in intermediate or definitive hosts, all of which gevolutum found in the same still or slow-moving freshwater habitats. Cyst wall consisted of outer, transparent layer, about 4.

Echinostomatid eggs have been detected in schoolchildren in 2 provinces, Battambang and Kampongcham 910but adult worms were not collected for identification.

Fellers and Michael W. The large-scale screening of natural snail populations in Europe revealed infections with five Echinostoma spp.

These results were highly compatible with E. Eggs are passed unembryonated in feces. The newly-generated nad 1 sequences from Europe fall into six distinct, well-supported, reciprocally monophyletic lineages corresponding to the species identifications based on morphology; this was corroborated by the 28S rDNA sequences. Our study provided the first datasets of sequences for E.

Redescription of Echinostoma trivolvis Cort, with a discussion on its identity. On the other hand, in some snail species, including C. All life-cycle stages of E. Digenea from its natural vertebrate host Nectomys squamipes by light and scanning electron microscopy and molecular analysis. Darkfield Digital Image Gallery Trematode Flukes Echinostoma revolutum The digenetic trematode Echinostoma revolutum is an endoparasitic helminth having a wide variety of hosts including ducks, geese, pigeons, chickens, and humans.


It has not been considered for conservation status by any agency. Kanev, Perception Channels visual chemical Food Habits Sporocysts lack ambulatory musculature and absorb primary intermediate host nutrients via their tegument. The adult trematode uses an oral and a ventral sucker to hold onto the lining of the bird cecum or human rectum.

Trematodes in the genus, Echinostoma. Many animals may serve as definitive hosts for various echinostome species, including aquatic birds, carnivores, rodents and humans. In addition, no easy diagnostic technique is available to detect echinostome eggs, except for routine fecal examination. Identification and distribution of Echinostmoa lindoenseE.