Parahemiurus merus

Parahemiurus merus   (Linton)

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Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Trematoda | Plagiorchiida | Hemiuridae

Environment: milieu / climate zone / depth range / distribution range Ecology

Host.  Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Western Atlantic and the Pacific Ocean. Tropical to temperate.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 0.4 cm TL male/unsexed; (Ref. 359)

Short description Morphology

Length: 0.14 - 0.35cm. An elongate fluke with a short; deeply invaginated tail. Oral and ventral suckers: close together but separated by about 1 width of the ventral sucker. Deep striations (cuticular denticulations): occur on the sides from the oral sucker to 2/3 of the way down the body. Uterus: with eggs either does not extend into the tail or just barely does; intestinal ceca extend into the tail. Vitellaria: reduced to a rounded lump near the ovary (Ref. 359).

Biology     Glossary (e.g. epibenthic)

Length: 0.14 to 0.35cm (Ref. 359). Host Specificity: This fluke appears to have little host preference as it occurs in a broad range of hosts. Habitat other vertebrates: blue runner, crevalle jack, greater amberjack, horse-eye jack, sailfish, Sterrhurus sp. barracuda (Ref. 359), Oncorhynchus, Gadus, Syngnathus, Hexagrammos, Ophiodon, Aprodon (Ref. 94010) and Priacanthus species (Ref. 95291).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Members of the class Trematoda are parasitic, thus requires a host to survive. Life cycle: Eggs are passed on to the feces of the hosts. Embryos hatch into miracidia and penetrate the tissues of snails where they further undergo three stages: sporocysts

Main reference References | Coordinator | Collaborators

Williams, E.H. Jr. and L. Bunkley-Williams 1996 Parasites of offshore big game fishes of Puerto Rico and the Western Atlantic. Puerto Rico Department of Natural and Environment Resources, San Juan, PR, and the University of Puerto Rico, Mayaguez, PR, 382 p. 320 drawings. (Ref. 359)

IUCN Red List Status (Ref. 130435: Version 2025-1)

  Not Evaluated 

CITES status (Ref. 108899)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses


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Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Publication : search) | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Fishing Vulnerability (Ref. 71543): Low vulnerability (10 of 100).
Price category (Ref. 80766): Unknown.

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