Metorchis conjunctus
| Metorchis conjunctus | |
|---|---|
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| Drawing of ventral view of Metorchis conjunctus. Scale bar is 1 mm. | |
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Platyhelminthes |
| Class: | Trematoda |
| Subclass: | Digenea |
| Order: | Plagiorchiida |
| Suborder: | Opisthorchiata |
| Superfamily: | Opisthorchioidea |
| Family: | Opisthorchiidae |
| Subfamily: | Metorchiinae |
| Genus: | Metorchis |
| Species: | M. conjunctus |
| Binomial name | |
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Metorchis conjunctus Cobbold, 1860 |
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| Synonyms | |
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Parametorchis noveboracensis (Hung, 1926) |
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Parametorchis noveboracensis (Hung, 1926)
Parametorchis intermedius (Price, 1929)
Parametorchis canadensis (Price, 1929)
Parametorchis manitobensis (Allen & Wardle, 1934)
Metorchis conjunctus, common name Canadian liver fluke, is a species of trematode parasite in the family Opisthorchiidae. It can infect mammals that eat raw fish in North America. The first intermediate host is a freshwater snail and the second, a freshwater fish.
This species was discovered and described by Thomas Spencer Cobbold in 1860.
The distribution of Metorchis conjunctus includes:
The body of Metorchis conjunctus is pear-shaped and flat. The body length is 1⁄4–3⁄8 inch (6.4–9.5 mm). There is a weakly muscular terminal oral sucker. There is no prepharynx. The pharynx is strongly muscular. The esophagus is very short. The intestinal ceca vary from almost straight to sinuous. The acetabulum is slightly oval and weakly muscular. There is an anterior testis and a posterior testis. The testes vary from almost round to oval, and may be deeply lobed or slightly indented. There is no cirrus pouch. The seminal vesicle is slender. The ovary is trilobed. The receptaculum seminis is elongated or pyriform, and slightly twisted, and situated to the right and behind the ovary.
The eggs are oval and yellowish brown.
The first intermediate host of Metorchis conjunctus is a freshwater snail, Amnicola limosus.
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