The Systematics of the Echinostomes

Kostadinova, Aneta; Gibson, David I.

doi:10.1007/978-94-015-9606-0_2

Cited by 40 publications

(41 citation statements)

References 53 publications

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“…This species closely resembles Echinostoma revolutum, and thus was once synonymized with E. revolutum by Diez in 1909 [104]. However, various authors acknowledge its distinctiveness [104][105][106][107]. In the meantime, Echinostoma barbosai Jeyarasasingam et al, 1972 and Echinostoma lindoense Sandground and Bonne, 1940 were synonymized with E. echinatum [105,108].…”

Section: Echinostoma Cinetorchismentioning

confidence: 99%

Foodborne Intestinal Flukes in Southeast Asia

et al. 2009

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Section: Echinostoma Cinetorchismentioning

confidence: 99%

Foodborne Intestinal Flukes in Southeast Asia

et al. 2009

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Section: Introductionmentioning

confidence: 99%

“…Adult echinostomatids are predominantly found in birds, and also parasitize mammals including man, and occasionally reptiles and fishes (Huffman and Fried 1990, Kostadinova and Gibson 2000, Kostadinova 2005a). Morphological diversity of this group and/or the diversity of the criteria adopted by different authors have resulted in its subdivision into an impressive number of subfamilies (Kostadinova and Gibson 2000). The Echinostomatidae has been viewed as a monophyletic taxon, with some exceptions, but some authors suggested that the family Echinostomatidae is polyphyletic and elevated the Echinochasminae Odhner, 1910 to full family rank (Odening 1963, Sudarikov and Karmanova 1977).…”

Section: Introductionmentioning

confidence: 99%

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Phylogenetic relationships of some species of the family Echinostomatidae Odner, 1910 (Trematoda), inferred from nuclear rDNA sequences and karyological analysis

Stanevičiūtė¹,

Stunžėnas²,

Petkevičiūtė³

2015

CCG

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The family Echinostomatidae Looss, 1899 exhibits a substantial taxonomic diversity, morphological criteria adopted by different authors have resulted in its subdivision into an impressive number of subfamilies. The status of the subfamily Echinochasminae Odhner, 1910 was changed in various classifications. Genetic characteristics and phylogenetic analysis of four Echinostomatidae species – Echinochasmus sp., Echinochasmus coaxatus Dietz, 1909, Stephanoprora pseudoechinata (Olsson, 1876) and Echinoparyphium mordwilkoi Skrjabin, 1915 were obtained to understand well enough the homogeneity of the Echinochasminae and phylogenetic relationships within the Echinostomatidae. Chromosome set and nuclear rDNA (ITS2 and 28S) sequences of parthenites of Echinochasmus sp. were studied. The karyotype of this species (2n=20, one pair of large bi-armed chromosomes and others are smaller-sized, mainly one-armed, chromosomes) differed from that previously described for two other representatives of the Echinochasminae, Echinochasmus beleocephalus (von Linstow, 1893), 2n=14, and Episthmium bursicola (Creplin, 1937), 2n=18. In phylogenetic trees based on ITS2 and 28S datasets, a well-supported subclade with Echinochasmus sp. and Stephanoprora pseudoechinata clustered with one well-supported clade together with Echinochasmus japonicus Tanabe, 1926 (data only for 28S) and Echinochasmus coaxatus. These results supported close phylogenetic relationships between Echinochasmus Dietz, 1909 and Stephanoprora Odhner, 1902. Phylogenetic analysis revealed a clear separation of related species of Echinostomatoidea restricted to prosobranch snails as first intermediate hosts, from other species of Echinostomatidae and Psilostomidae, developing in Lymnaeoidea snails as first intermediate hosts. According to the data based on rDNA phylogeny, it was supposed that evolution of parasitic flukes linked with first intermediate hosts. Digeneans parasitizing prosobranch snails showed higher dynamic of karyotype evolution provided by different chromosomal rearrangements including Robertsonian translocations and pericentric inversions than more stable karyotype of digenean worms parasitizing lymnaeoid pulmonate snails.

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“…There was a taxonomic problem in identifying our specimens because of the complexity in the systematics of 37-collar-spined echinostomes, the so-called ' revolutum ' group [8,9]. Within this group, more than 30 species have been described.…”

mentioning

confidence: 99%

Echinostoma revolutum: Metacercariae inFilopaludinaSnails from Nam Dinh Province, Vietnam, and Adults from Experimental Hamsters

Chai

Sohn

et al. 2011

Korean J Parasitol

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We detected metacercariae of Echinostoma revolutum in Filopaludina sp. snails purchased from a local market in Nam Dinh Province for the first time in Vietnam. Adult flukes were harvested from experimentally infected hamsters at days 14 and 17 post-infection. The metacercariae were round, 170-190 µm (n=15) in diameter, with a cyst wall thickness of about 12 µm. A total of 37 collar spines were arranged around the head collar, and large excretory granules were seen in 2 canals of the excretory bladder. The 14-day old adult flukes were elongated, ventrally curved, and 5.0-7.2×0.8-1.3 mm (n=20). The head collar had a total of 37 collar spines arranged in 2 alternating rows, including 5 corner spines on each side. The cirrus sac contained a saccular seminal vesicle, a prostatic gland, and an unarmed cirrus. Two tandem testes were smooth or slightly lobed. Eggs were ovoid to elliptical, 110-118×70-75 µm. These morphological characters were similar to those of E. revolutum and E. jurini. We tentatively identified it as E. revolutum because the validity of E. jurini remains to be elucidated. The taxonomic relationship of E. revolutum and E. jurini is discussed.

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The Systematics of the Echinostomes

Cited by 40 publications

References 53 publications

Foodborne Intestinal Flukes in Southeast Asia

Foodborne Intestinal Flukes in Southeast Asia

Phylogenetic relationships of some species of the family Echinostomatidae Odner, 1910 (Trematoda), inferred from nuclear rDNA sequences and karyological analysis

Echinostoma revolutum: Metacercariae inFilopaludinaSnails from Nam Dinh Province, Vietnam, and Adults from Experimental Hamsters

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