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| Scientific Name |
Lampetra alaskensis |
| Classified By |
Vladykov & Kott, 1978 |
| Common Name |
Alaskan brook lamprey |
| Class |
Lampreys (Cephalaspidomorphi) |
| Order |
Lampreys (Petromyzontiformes) |
| Family |
Lampreys (Petromyzontidae) |
| Biology |
Adult preserved specimens gray-brown dorsally, white ventrally, with a dark blotch on 2nd dorsal fin; tail dark. Teeth on disk blunt and weakly cornified. Supraoral bar with 2 cusps. Infraoral bar with 6-11 cusps. Lateral tooth plates 3, central pair with 2 cusps. Tongue teeth poorly developed and blunt. Posterial teeth present. A few, supplementary marginal teeth present on the lateral areas of the disk. Typical length 12-17 cm TL (Ref. 43939). Trunk myomeres 66-72 (Ref. 43938). |
| Climate |
Temperate |
| Water Temperature From - Celcius |
Unknown °C |
| Water Temperature To - Celcius |
Unknown °C |
| Depth From - meters |
Unknown
m |
| Depth To - meters |
Unknown
m |
| Zone |
demersal |
| Distribution |
North America: Alaska and Kenai peninsulas to Chatanika and Chena rivers near Fairbanks; Martin River, Mackenzie River basin, Northwest Territories. |
| Region |
North America |
| Range |
Unknown |
| Maximum Length |
18.8
cm |
| Common Length |
Unknown
cm |
| Environment |
Freshwater; demersal; potamodromous (Ref. 43939) |
| Vulnerability |
Moderate to high vulnerability (45 of 100) |
| Resilience |
Low, minimum population doubling time 4.5 - 14 years (tm=tmax=5) |
| Threat To Humans |
Harmless |
| IUCN Red List Status |
Not Evaluated |
| Human Uses |
Unknown |
| Phylogenetic Diversity Index |
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g.
lungfishes) |
| Trophic Level |
4.04 s.e. 0.69 Based on size and trophs of closest relatives |
| Is kept in Aquariums |
False |
| Occurs in Marine / Salt water |
False |
| Occurs in Brackish water |
False |
| Occurs in Fresh Water |
True |
| Occurs on Reefs |
False |