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| Scientific Name |
Ichthyomyzon unicuspis |
| Classified By |
Hubbs & Trautman, 1937 |
| Common Name |
Silver lamprey |
| Class |
Lampreys (Cephalaspidomorphi) |
| Order |
Lampreys (Petromyzontiformes) |
| Family |
Lampreys (Petromyzontidae) |
| Biology |
Feeding adults are usually found attached to other fishes in large rivers, lakes, and impoundments. They migrate upriver to spawn in gravel riffles and runs. Ammocoetes occur in sandy or muddy pools and backwaters where they stay as larvae for about 4 to 7 years. Adults are parasitic for 1 to 2 years. Semelparous. Listed as anadromous species in Ref. 51243. |
| 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: Mississippi drainage and the Great Lakes to Hudson Bay and the St. Lawrence River. Readily distinguishable from the sea lamprey by its single dorsal fin. |
| Region |
North America |
| Range |
59°N - 30°N |
| Maximum Length |
39.0
cm |
| Common Length |
20.1
cm |
| Environment |
Freshwater; demersal; potamodromous |
| Vulnerability |
High vulnerability (60 of 100) |
| Resilience |
Low, minimum population doubling time 4.5 - 14 years (tmax=8; tm=6; Fec=10,800) |
| Threat To Humans |
Harmless |
| IUCN Red List Status |
Not Evaluated |
| Human Uses |
Bait: occasionally |
| Phylogenetic Diversity Index |
PD50 = 0.5156 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes) |
| Trophic Level |
4.5 s.e. 0.80 Based on food items. |
| 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 |