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Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes.
Korean J Parasitol. 2002 Sep; 40(3):107-12.KJ

Abstract

A scanning electron microscopic study was performed on the surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adults. Metacercariae were collected from gills and muscles of mullets (Mugil cephalus) caught in a known endemic area, and adult flukes were harvested from dogs after 8 weeks of experimental infection. The worm was calabash form with its posterior part broader than the anterior part. Tegumental spines were densely distributed over the body surface, except on the suckers and genital apparatus, and around the excretory pore. Well differentiated spines were observed on the anterior half of the body, with 14-16 tips ventrally, and 19-20 tips dorsally. On the oral sucker, three pairs of type I sensory papillae (uni-ciliated knob-like swellings) and one pair of type II sensory papillae (aciliated round-swellings) were observed on the anterior and posterior parts of the lip, respectively. On the lip of the ventral sucker, one pair of type II sensory papillae was distributed only on its posterior part. Sperms were seen emerging from or entering into the genital apparatus. The results showed that the surface ultrastructure of P. summa was unique among the heterophyid trematodes, especially in digitation of tegumental spines and in distribution of sensory papillae on oral and ventral suckers.

Authors+Show Affiliations

Department of Parasitology, Seoul National University College of Medicine, Seoul 110-799, Korea. cjy@plaza.snuNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

12325439

Citation

Chai, Jong-Yil, et al. "Surface Ultrastructure of Pygidiopsis Summa (Digenea: Heterophyidae) Adult Flukes." The Korean Journal of Parasitology, vol. 40, no. 3, 2002, pp. 107-12.
Chai JY, Sohn WM, Choi SY, et al. Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes. Korean J Parasitol. 2002;40(3):107-12.
Chai, J. Y., Sohn, W. M., Choi, S. Y., & Lee, S. H. (2002). Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes. The Korean Journal of Parasitology, 40(3), 107-12.
Chai JY, et al. Surface Ultrastructure of Pygidiopsis Summa (Digenea: Heterophyidae) Adult Flukes. Korean J Parasitol. 2002;40(3):107-12. PubMed PMID: 12325439.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adult flukes. AU - Chai,Jong-Yil, AU - Sohn,Woon-Mok, AU - Choi,Sung-Yil, AU - Lee,Soon-Hyung, PY - 2002/9/28/pubmed PY - 2002/12/4/medline PY - 2002/9/28/entrez SP - 107 EP - 12 JF - The Korean journal of parasitology JO - Korean J. Parasitol. VL - 40 IS - 3 N2 - A scanning electron microscopic study was performed on the surface ultrastructure of Pygidiopsis summa (Digenea: Heterophyidae) adults. Metacercariae were collected from gills and muscles of mullets (Mugil cephalus) caught in a known endemic area, and adult flukes were harvested from dogs after 8 weeks of experimental infection. The worm was calabash form with its posterior part broader than the anterior part. Tegumental spines were densely distributed over the body surface, except on the suckers and genital apparatus, and around the excretory pore. Well differentiated spines were observed on the anterior half of the body, with 14-16 tips ventrally, and 19-20 tips dorsally. On the oral sucker, three pairs of type I sensory papillae (uni-ciliated knob-like swellings) and one pair of type II sensory papillae (aciliated round-swellings) were observed on the anterior and posterior parts of the lip, respectively. On the lip of the ventral sucker, one pair of type II sensory papillae was distributed only on its posterior part. Sperms were seen emerging from or entering into the genital apparatus. The results showed that the surface ultrastructure of P. summa was unique among the heterophyid trematodes, especially in digitation of tegumental spines and in distribution of sensory papillae on oral and ventral suckers. SN - 0023-4001 UR - https://www.unboundmedicine.com/medline/citation/12325439/Surface_ultrastructure_of_Pygidiopsis_summa__Digenea:_Heterophyidae__adult_flukes_ L2 - http://www.parasitol.or.kr/kjp/DOIx.php?id=10.3347/kjp.2002.40.3.107 DB - PRIME DP - Unbound Medicine ER -
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