Korean J Parasitol.  2017 Dec;55(6):631-641. 10.3347/kjp.2017.55.6.631.

Zoonotic Trematode Metacercariae in Fish from Yangon, Myanmar and Their Adults Recovered from Experimental Animals

Affiliations
  • 1Korea Association of Health Promotion, Seoul 07653, Korea.
  • 2Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 03080, Korea.
  • 3Department of Parasitology and Tropical Medicine, and Institute of Health Sciences, Gyeongsang National University College of Medicine, Jinju 52727, Korea. wmsohn@gnu.ac.kr
  • 4National Health Laboratory, Yangon 11191, Myanmar.

Abstract

A survey was performed to investigate the infection status of zoonotic trematode (ZT) metacercariae in fish from a local market in Yangon City, Myanmar. A total of 264 fish (12 species) were collected through 4 times from December 2013 to June 2015. All collected fish were transferred to our laboratory on ice and examined by the artificial digestion method. More than 7 species of ZT metacercariae, i.e., Haplorchis taichui, H. pumilio, H. yokogawai, Centrocestus spp., Stellantchasmus falcatus, Pygidiopsis cambodiensis, and Procerovum sp. were detected. Metacercariae of H. taichui were collected in 58 (42.3%) out of 137 fish (5 species), and their average density was 42.9 per fish infected. Metacercariae of H. pumilio were detected in 96 (49.0%) out of 196 fish (9 species), and their average density was 23.6 per fish infected. H. yokogawai metacercariae were found in 40 (50.0%) out of 80 fish (5 species), and Centrocestus spp. metacercariae in 91 (50.8%) out of 179 fish (8 species), and their densities were 306 and 25.8 per fish infected, respectively. Metacercariae of S. falcatus and P. cambodiensis were detected only in mullets, Chelon macrolepis. A total of 280 Procerovum sp. metacercariae were found in 6 out of 12 climbing perch, Anabas testudineus. Morphological characteristics of adult flukes recovered from experimental animals were described. It has been first confirmed that fish from Yangon, Myanmar are commonly infected with various species of ZT metacercariae.

Keyword

Haplorchis taichui; Haplorchis pumilio; Haplorchis yokogawai; Stellantchasmus falcatus; Centrocestus spp.; Pygidiopsis cambodiensis; Procerovum sp.; zoonotic trematode metacercaria

MeSH Terms

Adult*
Animals*
Digestion
Humans
Ice
Metacercariae*
Methods
Myanmar*
Perches
Smegmamorpha
Trematoda
Ice
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