| Tegumental ultrastructure of the juvenile and adult Himasthla alincia (Digenea: Echinostomatidae). | |
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MedLine Citation:
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PMID: 12666726 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The tegumental ultrastructure of juvenile and adult Himasthla alincia (Digenea: Echinostomatidae) was observed by scanning electron microscopy. One-, 5- (juveniles) and 20-day-old worms (adults) were harvested from chicks experimentally fed metacercariae from a bivalve, Mactra veneriformis. The juvenile worms were elongated and curved ventrally. The head crown bore 31 collar spines, arranged in a single row. The lip of the oral sucker had 12 paired, and 3 single type I sensory papillae, and the ventral sucker had about 25 type II sensory papillae. The anterolateral surface between the two suckers was densely packed with tegumental spines with 4-7 pointed tips. The adult worms were more elongated and filamentous, and had severe transverse folds over the whole body surface. On the head crown and two suckers, type I and II sensory papillae were more densely distributed than in the juvenile worms. Retractile brush-like spines, with 8-10 digits, were seen on the anterolateral surface, whereas claw-shaped spines, with 2-5 digits, were sparsely distributed posteriorly to the ventral sucker. The cirrus characteristically protruded out, and was armed with small spines distally. The surface ultrastructure of H. alincia was shown to be unique among echinostomes, especially in the digitation of its tegumental spines, the distribution of sensory papillae and by severe folds of the tegument. |
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Authors:
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Eun-Taek Han; Kye-Young Han; Jong-Yil Chai |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Korean journal of parasitology Volume: 41 ISSN: 0023-4001 ISO Abbreviation: Korean J. Parasitol. Publication Date: 2003 Mar |
Date Detail:
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Created Date: 2003-04-01 Completed Date: 2003-04-17 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 9435800 Medline TA: Korean J Parasitol Country: Korea (South) |
Other Details:
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Languages: eng Pagination: 17-25 Citation Subset: IM |
Affiliation:
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Department of Parasitology, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul 110-799, Korea. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aging Animals Integumentary System / anatomy & histology* Sense Organs / anatomy & histology, ultrastructure Trematoda / anatomy & histology*, ultrastructure* |
| Comments/Corrections | |
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