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Host specificity of Pisidium coreanum (Bivalvia: Sphaeriidae) to larval infection with a human intestinal fluke Echinostoma cinetorchis (Trematoda: Echinostomatidae) in Korea.
J Parasitol. 2006 Oct; 92(5):1118-20.JP

Abstract

The fingernail clam, Pisidium coreanum, has been traditionally consumed raw as a so-called drug therapy by patients with bone fractures in Korea. The present study was designed to determine the possible occurrence and, if present, the prevalence of Echinostoma cinetorchis in P. coreanum collected at a local site, and to determine the susceptibility of the clams in the laboratory to infection with miracidia and cercariae of E. cinetorchis. No cercariae or metacercariae of E. cinetorchis were observed in field-collected P. coreanum clams. In susceptibility experiments with laboratory-reared clams, individuals exposed to miracidia of E. cinetorchis did not release cercariae by 20 days after exposure; necropsy of exposed clams failed to show development of any sporocysts or rediae. To confirm the possibility of these clams serving as an experimental second intermediate host of E. cinetorchis, 20 of them were exposed to E. cinetorchis cercariae from experimentally infected Segmentina hemisphaerula that had been previously exposed to miracidia of E. cinetorchis; all exposed clams became infected. Metacercariae from clams at 14 days postinfection were fed to rats, and adult worms were recovered from the ileocecal regions. This is the first report of P. coreanum serving as second intermediate host of E. cinetorchis.

Authors+Show Affiliations

Department of Parasitology and Inha Research Institute for Medical Sciences, Inha University College of Medicine, Incheon.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17152966

Citation

Park, Y K., et al. "Host Specificity of Pisidium Coreanum (Bivalvia: Sphaeriidae) to Larval Infection With a Human Intestinal Fluke Echinostoma Cinetorchis (Trematoda: Echinostomatidae) in Korea." The Journal of Parasitology, vol. 92, no. 5, 2006, pp. 1118-20.
Park YK, Soh CT, Park GM, et al. Host specificity of Pisidium coreanum (Bivalvia: Sphaeriidae) to larval infection with a human intestinal fluke Echinostoma cinetorchis (Trematoda: Echinostomatidae) in Korea. J Parasitol. 2006;92(5):1118-20.
Park, Y. K., Soh, C. T., Park, G. M., Hwang, M. K., & Chung, P. R. (2006). Host specificity of Pisidium coreanum (Bivalvia: Sphaeriidae) to larval infection with a human intestinal fluke Echinostoma cinetorchis (Trematoda: Echinostomatidae) in Korea. The Journal of Parasitology, 92(5), 1118-20.
Park YK, et al. Host Specificity of Pisidium Coreanum (Bivalvia: Sphaeriidae) to Larval Infection With a Human Intestinal Fluke Echinostoma Cinetorchis (Trematoda: Echinostomatidae) in Korea. J Parasitol. 2006;92(5):1118-20. PubMed PMID: 17152966.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Host specificity of Pisidium coreanum (Bivalvia: Sphaeriidae) to larval infection with a human intestinal fluke Echinostoma cinetorchis (Trematoda: Echinostomatidae) in Korea. AU - Park,Y K, AU - Soh,C T, AU - Park,G M, AU - Hwang,M K, AU - Chung,P R, PY - 2006/12/13/pubmed PY - 2006/12/23/medline PY - 2006/12/13/entrez SP - 1118 EP - 20 JF - The Journal of parasitology JO - J. Parasitol. VL - 92 IS - 5 N2 - The fingernail clam, Pisidium coreanum, has been traditionally consumed raw as a so-called drug therapy by patients with bone fractures in Korea. The present study was designed to determine the possible occurrence and, if present, the prevalence of Echinostoma cinetorchis in P. coreanum collected at a local site, and to determine the susceptibility of the clams in the laboratory to infection with miracidia and cercariae of E. cinetorchis. No cercariae or metacercariae of E. cinetorchis were observed in field-collected P. coreanum clams. In susceptibility experiments with laboratory-reared clams, individuals exposed to miracidia of E. cinetorchis did not release cercariae by 20 days after exposure; necropsy of exposed clams failed to show development of any sporocysts or rediae. To confirm the possibility of these clams serving as an experimental second intermediate host of E. cinetorchis, 20 of them were exposed to E. cinetorchis cercariae from experimentally infected Segmentina hemisphaerula that had been previously exposed to miracidia of E. cinetorchis; all exposed clams became infected. Metacercariae from clams at 14 days postinfection were fed to rats, and adult worms were recovered from the ileocecal regions. This is the first report of P. coreanum serving as second intermediate host of E. cinetorchis. SN - 0022-3395 UR - https://www.unboundmedicine.com/medline/citation/17152966/Host_specificity_of_Pisidium_coreanum__Bivalvia:_Sphaeriidae__to_larval_infection_with_a_human_intestinal_fluke_Echinostoma_cinetorchis__Trematoda:_Echinostomatidae__in_Korea_ L2 - http://www.journalofparasitology.org/doi/10.1645/GE-787R1.1?url_ver=Z39.88-2003&rfr_id=ori:rid:crossref.org&rfr_dat=cr_pub=pubmed DB - PRIME DP - Unbound Medicine ER -