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Tegumental ultrastructures of Echinoparyphium recurvatum according to developmental stages.
Korean J Parasitol. 2002 Jun; 40(2):67-73.KJ

Abstract

The present study was performed to observe tegumental ultrastructure of Echinoparyphium recurvatum according to developmental stages. Worms (1, 3, 5 and 15-day old) were recovered from chicks experimentally infected with metacercariae from Radix auricularia coreana. One-day old worms were elongated and ventrally concave, and covered with peg-like tegumental spines except the adjacent areas of the head crown and excretory pore. Type I sensory papillae were distributed on the lip of the oral sucker, and grouped ciliated papillae were around the oral sucker. Peg-like tegumental spines were densely distributed on the anterior surface of the ventral sucker level. The ventral sucker had an aspinous tegument and no sensory papillae. Tegumental spines on the posterior surface of the ventral sucker level were sparsely distributed and disappeared posteriorly. In 3 and 5-day old worms, the tegument around the oral sucker was aspinose and wrinkled concentrically. The ventral sucker had a wrinkled tegument and many bulbous papillae. Type I sensory papillae were distributed between the bulbous papillae. Tegumental spines were spade-shaped with a terminal tip. A total of 45 collar spines including 4 end group ones on both ventral corners was alternately arranged in 2 rows. The 15-day old worms were very stout and their tegumental spines were tongue-shaped without a terminal tip. From the above results, it is confirmed that the surface ultrastructure of E. recurvatum was generally similar to that of other echinostomatid flukes. However, some features, i.e., morphological change of tegumental spines and appearance of sensory papillae on the ventral sucker according to development, and number, shape and arrangement of collar spines, were characteristic, which may be of taxonomic and bioecological significance.

Authors+Show Affiliations

Department of Parasitology, Institute of Health Sciences, Gyeongsang National University College of Medicine, Chinju, 660-751, Korea. wmsohn@nongae.gsnu.ac.krNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12073731

Citation

Sohn, Woon-Mok, et al. "Tegumental Ultrastructures of Echinoparyphium Recurvatum According to Developmental Stages." The Korean Journal of Parasitology, vol. 40, no. 2, 2002, pp. 67-73.
Sohn WM, Woo HC, Hong SJ. Tegumental ultrastructures of Echinoparyphium recurvatum according to developmental stages. Korean J Parasitol. 2002;40(2):67-73.
Sohn, W. M., Woo, H. C., & Hong, S. J. (2002). Tegumental ultrastructures of Echinoparyphium recurvatum according to developmental stages. The Korean Journal of Parasitology, 40(2), 67-73.
Sohn WM, Woo HC, Hong SJ. Tegumental Ultrastructures of Echinoparyphium Recurvatum According to Developmental Stages. Korean J Parasitol. 2002;40(2):67-73. PubMed PMID: 12073731.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Tegumental ultrastructures of Echinoparyphium recurvatum according to developmental stages. AU - Sohn,Woon-Mok, AU - Woo,Ho-Choon, AU - Hong,Sung-Jong, PY - 2002/6/21/pubmed PY - 2002/8/24/medline PY - 2002/6/21/entrez SP - 67 EP - 73 JF - The Korean journal of parasitology JO - Korean J. Parasitol. VL - 40 IS - 2 N2 - The present study was performed to observe tegumental ultrastructure of Echinoparyphium recurvatum according to developmental stages. Worms (1, 3, 5 and 15-day old) were recovered from chicks experimentally infected with metacercariae from Radix auricularia coreana. One-day old worms were elongated and ventrally concave, and covered with peg-like tegumental spines except the adjacent areas of the head crown and excretory pore. Type I sensory papillae were distributed on the lip of the oral sucker, and grouped ciliated papillae were around the oral sucker. Peg-like tegumental spines were densely distributed on the anterior surface of the ventral sucker level. The ventral sucker had an aspinous tegument and no sensory papillae. Tegumental spines on the posterior surface of the ventral sucker level were sparsely distributed and disappeared posteriorly. In 3 and 5-day old worms, the tegument around the oral sucker was aspinose and wrinkled concentrically. The ventral sucker had a wrinkled tegument and many bulbous papillae. Type I sensory papillae were distributed between the bulbous papillae. Tegumental spines were spade-shaped with a terminal tip. A total of 45 collar spines including 4 end group ones on both ventral corners was alternately arranged in 2 rows. The 15-day old worms were very stout and their tegumental spines were tongue-shaped without a terminal tip. From the above results, it is confirmed that the surface ultrastructure of E. recurvatum was generally similar to that of other echinostomatid flukes. However, some features, i.e., morphological change of tegumental spines and appearance of sensory papillae on the ventral sucker according to development, and number, shape and arrangement of collar spines, were characteristic, which may be of taxonomic and bioecological significance. SN - 0023-4001 UR - https://www.unboundmedicine.com/medline/citation/12073731/Tegumental_ultrastructures_of_Echinoparyphium_recurvatum_according_to_developmental_stages_ L2 - http://www.parasitol.or.kr/kjp/DOIx.php?id=10.3347/kjp.2002.40.2.67 DB - PRIME DP - Unbound Medicine ER -