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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Trematodes in the genus, Echinostoma. Additional file Additional file 1: Distribution of freshwater snails in family-based VAC ponds and associated waterbodies with special reference to intermediate hosts of fish-borne zoonotic trematodes in Nam Dinh Province, Vietnam. 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.

Journal List Parasit Vectors v. Tkach V, Pawlowski J. Twenty haplotypes were identified in isolates of E. The adult flukes were elongated, ventrally curved, and 5. Considering the recent results of Georgieva et al.

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Although several ultrastructural studies were performed on what was thought to be E. However, this finding calls for further molecular and taxonomic scrutiny. When the eggs are in contact with fresh water they may become embryonated, and will then hatch and release miracidia. The position of E. The online version of this article doi: Non-metric multidimensional scaling ordination plot derived from the raw echinsotoma distances calculated for the nad 1 dataset.


The phylogenetic analyses depicted 17 genetically distinct lineages within the data set studied and, excluding singletons, successful identification of all isolates was achieved by the distance-based identification method implemented in Species Identifier v.

Life cycle of a new African echinostome species reproducing by parthenogenesis. Find articles by Nguyen Van De. The scale-bar indicates the expected number of substitutions per site.

Species of Hypoderaeum possess 43—82 collar spines [ 67 ] so that the minimum number of spines provided for the isolate i. In heavy infections, they can cause mucosal ulceration, bleeding, and severe inflammation in human patients. The life history of Echinostoma rodriguesi sp. Phylogenetic relationships of Echinostoma Rudolphi, Digenea: Echhinostoma tegument posterior to the head collar is covered with scale-like spines.

All life-cycle stages of E. The head collar of the adult was distinct, bearing 37 collar spines arranged in 2 alternating rows, including 5 corner spines on each side.

Summary data for the isolates of Echinostoma spp. Recent molecular studies indicate the existence of more species than previously considered valid, thus stressing the need for wider taxon sampling from natural host populations. Morphological descriptions and sequences for Echinostoma sp.

To date, 20 species of zoonotic echinostomes belonging to 9 genera have been discovered worldwide EchinostomaEchinochasmusAcanthoparyphiumArtyfechinostomumEchinoparyphiumEpisthmiumHimasthlaHypoderaeumand Isthmiophora [ 1 ].

Notably, the identification of the newly-sequenced adult isolates based on morphology alone, using the concept of Kostadinova et al. Few edhinostoma of echinostome flukes have been performed in Vietnam.


The oral sucker is surrounded by a collar of spines, the number of which varies among species. The status of this isolate was discussed by Kostadinova et al. The cirrus sac contained a saccular seminal vesicle, a prostatic gland, and an unarmed echimostoma.

The life-cycle of Echinostoma bolschewense possible synonym E. National Center for Biotechnology InformationU. Echinostomatidae in Spain and a discussion on the relationships within the ‘ revolutum ‘ group based on cercarial chaetotaxy.

The large-scale echinostoam of natural xp populations in Europe revealed infections with five Echinostoma spp. Implications for their systematics and evolution. Please review our privacy policy. Nad 1 for a barcode? Along this line, Echinostoma hortense Asada, has been transferred to the genus Isthmiophora as I. The only supported sister-group relationship was between E.

CDC – DPDx – Echinostomiasis

The lower divergence range was 3—5 nucleotide positions 0. Therefore, although the sequence information and analyses of Detwiler et al. Kanev I, Odening K. Another point that needs to be discussed is the size of the metacercariae.