Haplorchis taichui

Haplorchis taichui is a species of intestinal fluke in the family Heterophyidae.[2] It is a human parasite.

Haplorchis taichui
Scientific classification
Kingdom:
Animalia
Phylum:
Platyhelminthes
Class:
Trematoda
Subclass:
Digenea
Order:
Opisthorchiida
Suborder:
Opisthorchiata
Superfamily:
Opisthorchioidea
Family:
Heterophyidae
Genus:
Haplorchis
Species:
H. taichui
Binomial name
Haplorchis taichui
(Nishigori, 1924)
Synonyms[1]

Monorchotrema taichui Nishigori, 1924
Monorchotrema microrchia Katsuda, 1932
Haplorchis microrchis Yamaguti, 1958

Distribution

This species occurs in: Taiwan, the Philippines,[3] Bangladesh, India, Sri Lanka, Palestine, Iraq, Egypt, Malaysia, Thailand, Laos, Vietnam, and South China.[1]

Life cycle

The first intermediate hosts of Heterophyes nocens include freshwater snails Melania obliquegranosa, Stenomelania juncea, and Melanoides tuberculata.[1]

The second intermediate host include freshwater fish: Cyclocheilichthys repasson, goldfish Carassius auratus, Cyprinus carpio, Gambusia affinis, Hampala dispar, Labiobarbus leptocheilus, Puntius binotatus, Puntius brevis, Puntius gonionotus, Javean barb, Barbodes palata, Pseudorasbora parva, Rhodeus ocellatus, Zacco platypus, Raiamas guttatus, Mystacoleucus marginatus, and Siamese mud carp Henicorhynchus siamensis.[1]

Natural definitive hosts are fish-eating animals: dogs, cats, birds, and humans.[1]

Effects on human health

Symptoms

Diagnosis and treatment

Oxyresveratrol, a stilbenoid found in extracts of Artocarpus lakoocha is effective against Haplorchis taichui.[4]

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References
  1. Chai J.-Y., Shin E.-H., Lee S.-H. & Rim H.-J. (2009). "Foodborne Intestinal Flukes in Southeast Asia". The Korean Journal of Parasitology 47(Suppl): S69-S102. doi:10.3347/kjp.2009.47.S.S69.
  2. Gohar, N. (1934). "Les trématodes parasites du milan égyptien Milvus migrans avec description d'une nouvelle espèce et remarques sur les genres Haplorchis Looss 1899 et Monorchotrema Nishigori 1924" (PDF). Annales de Parasitologie Humaine et Comparée. 12 (3): 218–227. doi:10.1051/parasite/1934123218.
  3. ABelizario Jr, VY; De Leon, WU; Bersabe, MJ; Baird, J. Kevin; Baird, JK; Bangs, MJ (2004). "A focus of human infection by Haplorchis taichui (Trematoda: Heterophyidae) in the southern Philippines". The Journal of Parasitology. 90 (5): 1165–9. doi:10.1645/GE-3304RN. PMID 15562620.
  4. Wongsawad, C; Wongsawad, P; Luangphai, P; Kumchoo, K (2005). "In vitro effects of aqueous extract from Artocarpus takoocha Roxb on tegumental surface of Haplorchis taichui" (PDF). The Southeast Asian Journal of Tropical Medicine and Public Health. 36 Suppl 4: 112–6. PMID 16438193.


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