Entosphenus lethophagus, Pit-Klamath brook lamprey

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Entosphenus lethophagus (Hubbs, 1971)

Pit-Klamath brook lamprey
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Entosphenus lethophagus
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Classification / Names Noms communs | Synonymes | Catalog of Fishes(Genre, Espèce) | ITIS | CoL | WoRMS | Cloffa

> Petromyzontiformes (Lampreys) > Petromyzontidae (Northern lampreys) > Lampetrinae
Etymology: Entosphenus: entos (Gr.), within; sphenos (Gr.), wedge, referring to wedge-shaped tooth within mouth on tongue of E. tridentatus. (See ETYFish);  lethophagus: lethe (Gr.), forgetting or forgetfulness; phagein (Gr.), to eat, i.e., not eating (an adjective), referring to adults, which do not eat before they spawn and die. (See ETYFish).
More on author: Hubbs.

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

; eau douce démersal; non migrateur. Temperate; 43°N - 41°N

Distribution Pays | Zones FAO | Écosystèmes | Occurrences | Point map | Introductions | Faunafri

North America: Klamath River in south central Oregon (rare) and Pit River in northeastern California, USA.

Taille / Poids / Âge

Maturity: Lm ?  range ? - ? cm
Max length : 22.0 cm TL mâle / non sexé; (Ref. 5723); common length : 14.0 cm TL mâle / non sexé; (Ref. 12193)

Description synthétique Morphologie | Morphométrie

Épines dorsales (Total): 0; Épines anales 0. Adults: 12.4-18.4 cm TL. Adult body proportions, as percentage of TL (based on ten specimens 12.6-18.4 cm TL): prebranchial length, 8.2-13.3; branchial length, 8.4-10.8; trunk length, 43.4-51.6; tail length, 28.8-35.3; eye length, 1.6-3.2; disc length, 4.1-6.1; urogenital papilla length, 16.0 (percentage of branchial length in a spawning male measuring 12.9 cm TL); trunk myomeres, 58-73. Adult dentition: supraoral lamina, 2-3 unicuspid teeth, usually 3; infraoral lamina, 5-7 unicuspid teeth; 4 endolaterals on each side; endolateral formula, typically 2-2-2-2 or 2-3-3-2, the first and fourth endolaterals may also rarely be unicuspid; 2-3 rows of anterials; first row of anterials, 1 or 5 unicuspid teeth; exolaterals absent; 1 row of posterials with 10-17 teeth, of which 0-12 are bicuspid and the rest unicuspid; transverse lingual lamina, 15-20 unicuspid teeth, the median one slightly enlarged; longitudinal lingual laminae each with undetermined number of unicuspid teeth. Velar tentacles in adults, 5-12, with tubercles; median tentacle shorter than the lateral ones immediately next to it; body coloration (preserved), ventral aspect whitish; oral papillae, 5-26 (Ref. 89241).

Biologie     Glossaire (ex. epibenthic)

Inhabits riffles and runs of clear streams. Ammocoetes larvae occur near weed beds and sand bars. Non-parasitic (Ref. 5723). Freshwater; adults from Crooked Creek, Oregon are sexually mature in mid-March (Ref. 89241).

Life cycle and mating behavior Maturité | Reproduction | Frai | Œufs | Fécondité | Larves

Référence principale Upload your references | Références | Coordinateur | Collaborateurs

Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)

Statut dans la liste rouge de l'IUCN (Ref. 130435)

  Préoccupation mineure (LC) ; Date assessed: 22 February 2012

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Menace pour l'homme

  Harmless





Utilisations par l'homme

Pêcheries: sans intérêt
FAO - Publication: search | FishSource |

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Sources Internet

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | FishWatcher | CISTI | Catalog of Fishes: Genre, Espèce | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: génôme, nucléotide | GloBI | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Socotra Atlas | Arbre de Vie | Wikipedia: aller à, chercher | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5156   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00126 (0.00056 - 0.00284), b=2.99 (2.80 - 3.18), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).
Niveau trophique (Ref. 69278):  4.1   ±0.7 se; based on size and trophs of closest relatives
Résilience (Ref. 120179):  Faible, temps minimum de doublement de population : 4,5 à 14 années (Semelparous species, assuming tm (= tmax) > 4).
Fishing Vulnerability (Ref. 59153):  Low vulnerability (12 of 100).