Lampetra tridentata (Richardson, 1836)

Pacific lamprey

Catalog of Fishes (gen., sp.) | ITIS | CoL

Classification	Cephalaspidomorphi \| Petromyzontiformes \| Petromyzontidae \| Petromyzontinae
Synonyms	Petromyzon tridentatus, Entosphenus tridentatus, Entosphenus tridentatus tridentatus, ... more
Common names	Pacific three-toothed lamprey, Lamproie du Pacifique, Lamprea del Pacifico, ... more

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AquaMaps Data sources: GBIF OBIS

Main reference

Page, L.M. and B.M. Burr. 1991. (Ref. 5723)
Other references | Biblio | Coordinator | Collaborators

Size / Weight / Age

Max length : 76.0 cm TL male/unsexed; (Ref. 2850); common length : 41.0 cm TL male/unsexed; (Ref. 12193); max. published weight: 500 g (Ref. 27436); max. reported age: 9 years (Ref. 72464)

Environment

Demersal; anadromous (Ref. 51243); freshwater; brackish; marine; depth range 0 - 1100 m (Ref. 50610)

Climate / Range

Temperate; 65°N - 32°N

North Pacific: Bering Sea coasts of Asia and Alaska southward to the Yuhutu River, Hokkaido, northern Japan and Punta Canoas, central Baja California, Mexico. The populations were, at one time, split into two groups (Ref. 10015) as Entosphenus tridentatus tridentatus which ranged from the Columbia River to Alaska, and Entosphenus tridentatus ciliatus which ranged from Klamath River southwards (Ref. 1998). This division no longer holds (Ref. 1998). Freshwater resident populations exist in Culrus Lake and the Columbia River, British Columbia, the Sprague River in Oregon, the Goose Lake in Oregon/California, and the Klamath and Shasta rivers and Copco Lake in California (Ref. 12269).
Countries | FAO areas | Ecosystems | Occurrences | Introductions

Short description

Characterized by the presence of 3 (rarely 2) large sharp teeth on the supraoral bar and three sharp points on each of the central lateral tooth plates (Ref. 27547). Dorsal fins arise far back on the body, the anterior fin lower and shorter, higher in males; lower lobe of caudal fin larger than upper, the lobes joined to dorsal and anal fins; anal fin rudimentary, virtually absent in males (Ref. 27547). Adults from the sea blue-black to greenish above, silvery to white below; spawning adults become reddish brown (Ref. 27547).

Spawning adults are found in gravel riffles and runs of clear coastal streams; feeding adults usually in the ocean, but landlocked populations occur (Ref. 1998); ammocoetes in silt, mud, and sand of shallow eddies and backwaters of streams (Ref. 5723). Parasitic adults attach themselves to the side or undersurface of its prey, from which it draws blood and body fluids as food. Preys on fishes and sperm whales (Ref. 6885). Stops feeding once upstream spawning migration is underway (Ref. 1998). Rarely consumed as food; prepared fresh or smoked (Ref. 6885). Sometimes processed into meal (Ref. 27436). The effects of Pacific lamprey attacks on commercial species needs further studies (Ref. 6885).


IUCN Red List Status (Ref. 57073)	Threat to humans
Not Evaluated	Harmless

Human uses
Fisheries: subsistence fisheries


More information
Countries FAO areas Ecosystems Occurrences Introductions Ecology Diet Food items Food consumption Ration	Common names Synonyms Metabolism Predators Ecotoxicology Reproduction Maturity Spawning Eggs Egg development	Age/Size Growth Length-weight Length-length Length-frequencies Morphometrics Morphology Larvae Larval dynamics Recruitment	Other references Biblio Aquaculture Aquaculture profile Strains Genetics Allele frequencies Heritability Diseases Processing	Collaborators Pictures Stamps Sounds Ciguatera Speed Swim. type Gill area Otoliths Brains Vision

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Internet sources

Estimation of some characteristics with mathematical models

Resilience (Ref. 69278)

Low, minimum population doubling time 4.5 - 14 years (tm 6-8; Fec=10,000-106,000 (semelparous))


Vulnerability (Ref. 59153)	Price category (Ref. 80766)
High to very high vulnerability (69 of 100)	Not marketed/unknown

Entered by Froese, Rainer

Modified by Ortañez, Auda Kareen

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Page last modified by : elaxamana, 15 July 2009

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