Echinostoma sp. Classification. Phylum Platyhelminthes (flatworms). Class: Trematoda (Flukes). Order Echinostomatiformes. Family Echinostomatidae. J Travel Med. Sep 1;24(5). doi: /jtm/tax Infection with Echinostoma sp. in a group of travellers to Lake Tanganyika, Tanzania, in January Delineation of the European Echinostoma spp. was carried out based on molecular, morphological and ecological data. The large-scale.

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Archived from the original on 18 March Therefore, the taxonomic issue needs to be further clarified on our observed worms. Find articles by Woon-Mok Sohn.

Table S1 were aligned using Muscle implemented in MEGA v6; nad 1 dataset was aligned with reference to the amino acid translation, using the echinoderm and flatworm mitochondrial code [ 37 ], but analysed solely as nucleotides first, second echinostoja third positions within the included codons were included in the analyses.

First, consistent with the recent study of Georgieva et al. The ventral sucker was ecginostoma and moderately large. To date, 20 species of zoonotic echinostomes belonging to 9 genera have been discovered worldwide EchinostomaEchinochasmusAcanthoparyphiumArtyfechinostomumEchinoparyphiumEpisthmiumHimasthlaHypoderaeumand Isthmiophora [ 1 ]. The oral echlnostoma was subterminal. The Systematics of the Echinostomes.

Furthermore, all sister-species groups could be resolved using diagnostic nucleotide sites: Eggs of Echinostoma spp.


Sequencing of isolates from wild mammalian hosts within Europe may contribute to resolving the natural definitive hosts in the life-cycles of E. December 28, Page last updated: The life history of Echinostoma revolutum in South Australia. Re-validation of Echinostoma miyagawai Inshii, Digenea: The genus is worldwide, and about echinistoma species have been recorded in humans, including E.

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It is also necessary to test if the structuring inferred from the nad 1 sequences Detwiler et al. Gastropoda, Pulmonatain Central Europe: Summary data for the isolates of Echinostoma spp. The cercarial isolates from L.

Echinostoma – Wikipedia

Canadian Journal of Zoology. 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.

Recently, metacercariae of Echinochasmus japonicus were reported from a species of freshwater fish, Labeo rohita in Vietnam [ 24 ]. Recently, Georgieva et al. Other second intermediate hosts include bivalves, fish and tadpoles. Life cycle of a new African echinostome species reproducing by parthenogenesis. Many animals may serve as definitive hosts for various echinostome species, including aquatic birds, carnivores, rodents and humans.

The systematics of the echinosotmes. Collar spines, 37 in total, were clearly visible around the head collar, with 5 corner spines on each side and 27 ventral, lateral, and dorsal spines, in 2 alternating rows Fig.

Echinostomiasis – Microscopy Findings

However, it was based upon a suggestion on the presence of the larval stage, Cercaria spinifera [ 7 ]. Jordane France with sequences previously reported as Echinostoma sp.

Echinostoma echinatum Zeder, sensu Kanev Digenea: Snail screening provided representative larval isolates for five species of the ‘ revolutum ‘ group, identified by s; morphology.

Sandground JH, Bonne C. The first intermediate host for our flukes may be the same or different species of viviparid snails, although this was not confirmed in our study.

The life-cycle of Echinostoma bolschewense possible synonym E. They have an inconspicuous operculum and the abopercular end is often thickened. We conclude that nad 1 should be the first choice for large-scale barcode-based identification of the species of the ‘ revolutum ‘ group.


Kanev I, Odening K. There were numerous ciliated or aciliated sensory papillae distributed around the oral sucker and head collar Fig. These were collected in an extensive sampling programme in eight countries in Europe and identified based on parasite morphology. A detailed examination of adult morphology experimental set and the voucher specimen from natural infection used for echinpstoma see [ 46 ] confirmed their identification as E. A single ovary is situated near the large, paired testes.

A quantitative approach to the evaluation of the morphological variability of two echinostomes, Echinostoma miyagawai Ishii, and E. Species delineation Delineation of the European species of Echinostoma was based on the integration of molecular, morphological and ecological data: However, echinotoma species is still referred to as E. Echinostoma armigerum ; E. Five species acted as hosts of a single species of Echinostoma: Redescription of Echinostoma jurini Skvortzov, with a discussion of its identity and characteristics.

Three species, Echinostoma sp. Therefore, although the sequence information and analyses of Detwiler et al.

This species has been recorded from humans in Taiwan. In our study, the attempt to infect ducks failed and adult flukes were successfully recovered only from hamsters. Author information Article notes Copyright and License information Disclaimer. Neighbour-Joining NJ tree for 16 species-level lineages within the ‘ revolutum ‘ group of Echinostoma based on the mitochondrial gene nad 1: Notice the vitelline glands VT and lobed testes TE.