Journal ArticleDOI
Life-cycle, delimitation and redescription of Echinostoma revolutum (Froelich, 1802) (Trematoda: Echinostomatidae)
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It is shown that the first intermediate host is a lymnaeid snail and the second intermediate hosts are various pulmonate and prosobranch snails, mussels, frogs and freshwater turtles, and the final hosts are birds.Abstract:
The life-cycle of Echinostoma revolutum (Froelich, 1802) Dietz, 1909 has been completed experimentally beginning with infected snails collected at the type-locality, near Erlangen, Germany. Based on the specimens obtained, each stage of the life-cycle has been redescribed. Important taxonomic features are discussed and hitherto unknown characteristics are described. Synonyms for E. revolutum are: Fasciola revoluta Froelich, 1802; Echinostoma paraulum Dietz, 1909; E. audyi Lie & Umathevy, 1965; and E. ivaniosi Mohandas, 1973. Adults and larvae described as E. revolutum in other works are found to be identical with Echinostoma echinatum (Zeder, 1803), E. trivolvis (Cort, 1914), E. jurini (Skvortsov, 1924), E. caproni Richard, 1964, Moliniella anceps (Molin, 1859), Echinochasmus beleocephalus (Linstow, 1873) and other echinostome species. For nearly a century, incorrect morphological, biological, life-cycle and host information has been attributed to E. revolutum, and at times these data have contributed to the diagnoses of the species. Occasionally, authors actually working with E. revolutum have ascribed their results to other species. Based on extensive experimental life-cycle studies beginning with infected snails from type-localities, it is shown that (1) the first intermediate host is a lymnaeid snail; (2) the second intermediate hosts are various pulmonate and prosobranch snails, mussels, frogs and freshwater turtles; (3) the final hosts are birds; (4) E. revolutum cercariae and adults have 37 collar spines; (5) the species occurs only in Europe and Asia; (6) Cercaria echinata Siebold, 1937, Echinostoma echinatum (Zeder, 1803) and E. jurini (Skvortsov, 1924) are the closely related 37-spined allies in Europe; and (7) species specific characteristics are expressed only in the larvae and the host-parasite relationships. The adults of E. revolutum cannot be identified using morphological criteria and it is proposed that worms with 37 collar spines belonging to the genus Echinostoma and occurring in naturally infected birds in Europe and Asia be referred to an “E. revolutum group.”read more
Citations
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Journal ArticleDOI
Nuclear rDNA ITS sequence variation in the trematode genus Echinostoma : an aid to establishing relationships within the 37-collar-spine group
Jess A. T. Morgan,David Blair +1 more
TL;DR: DNA sequence data from the nuclear rDNA ITS1, 5.8S and ITS2 of 7 nominal species belonging to the Echinostoma trivolvis and E. paraensei group will assist in the current reclassification of the group and provide a model for future work on sibling species.
Journal ArticleDOI
Foodborne Intestinal Flukes in Southeast Asia
TL;DR: The host-parasite relationships have been studied in Metagonimus yokogawai, Echinostoma hortense, Fasciolopsis buski, Neodiplostomum seoulense, and Gymnophalloides seoi; however, the pathogenicity of each parasite species and host mucosal defense mechanisms are yet poorly understood.
Book ChapterDOI
The Biology of the Intestinal Trematode Echinostoma caproni
Bernard Fried,Jane E. Huffman +1 more
TL;DR: The biology of the intestinal trematode, Echinostoma cuproni, is introduced and it is concluded that this organism is an exceptionally fine model for various studies in parasitology.
Journal ArticleDOI
Phylogenetic relationships of Echinostoma Rudolphi, 1809 (Digenea: Echinostomatidae) and related genera re-assessed via DNA and morphological analyses.
TL;DR: Although the ITS data provided insufficient resolution for an unequivocal solution to the relationships within the genus Echinostoma, it supported the identification of Echinoparyphium ellisi and the distinct species status of three isolates of E chinostoma revolutum as predicted from the ND1 data.
References
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MonographDOI
Entozoorum synopsis cui accedunt mantissa duplex et indices locupletissimi / auctore, Carolo Asmund Rudolphi.
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