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Tegumental ultrastructure of the juvenile and adult Himasthla alincia (Digenea: Echinostomatidae).
Korean J Parasitol. 2003 Mar; 41(1):17-25.KJ

Abstract

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.

Authors+Show Affiliations

Department of Parasitology, Seoul National University College of Medicine, and Institute of Endemic Diseases, Seoul National University Medical Research Center, Seoul 110-799, Korea.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12666726

Citation

Han, Eun-Taek, et al. "Tegumental Ultrastructure of the Juvenile and Adult Himasthla Alincia (Digenea: Echinostomatidae)." The Korean Journal of Parasitology, vol. 41, no. 1, 2003, pp. 17-25.
Han ET, Han KY, Chai JY. Tegumental ultrastructure of the juvenile and adult Himasthla alincia (Digenea: Echinostomatidae). Korean J Parasitol. 2003;41(1):17-25.
Han, E. T., Han, K. Y., & Chai, J. Y. (2003). Tegumental ultrastructure of the juvenile and adult Himasthla alincia (Digenea: Echinostomatidae). The Korean Journal of Parasitology, 41(1), 17-25.
Han ET, Han KY, Chai JY. Tegumental Ultrastructure of the Juvenile and Adult Himasthla Alincia (Digenea: Echinostomatidae). Korean J Parasitol. 2003;41(1):17-25. PubMed PMID: 12666726.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Tegumental ultrastructure of the juvenile and adult Himasthla alincia (Digenea: Echinostomatidae). AU - Han,Eun-Taek, AU - Han,Kye-Young, AU - Chai,Jong-Yil, PY - 2003/4/2/pubmed PY - 2003/4/18/medline PY - 2003/4/2/entrez SP - 17 EP - 25 JF - The Korean journal of parasitology JO - Korean J. Parasitol. VL - 41 IS - 1 N2 - 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. SN - 0023-4001 UR - https://www.unboundmedicine.com/medline/citation/12666726/Tegumental_ultrastructure_of_the_juvenile_and_adult_Himasthla_alincia__Digenea:_Echinostomatidae__ L2 - http://www.parasitol.or.kr/kjp/DOIx.php?id=10.3347/kjp.2003.41.1.17 DB - PRIME DP - Unbound Medicine ER -
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