| Coregonus hubbsi |
| Ives lake cisco |
Key Characteristics
Currently, experts disagree to whether C. hubbsi is a separate species from C. artedi – Genetic work is need.
Status and Rank
- State Status: T - Threatened (legally protected)
- State Rank: S1 - Critically imperiled
- Global Rank: G1Q - Critically imperiled. Questionable taxonomy that may reduce conservation priority
Occurrences
| County Name | Number of Occurrences | Year Last Observed |
|---|---|---|
| Marquette | 1 | 1983 |
![County Distribution Map for [SNAME]](/tmp/Species_Distributions13690231559484.png)
Updated 05/08/2013. Information is summarized from MNFI's database of rare species and community occurrences. Data may not reflect true distribution since much of the state has not been thoroughly surveyed.
Habitat
Ives lake cisco are found in similar habitats to lake herring, in deep inland lakes as well as the Great Lakes at depths ranging from 18 to 53 meters. They can be found in shallower depths (9-12 m) when spawning over rocky substrates.
Specific Habitat Needs
Deep water needed in Great Lake, Pelagic, Midwater
Natural Community Types
- River (5th-6th order), pool
- River (5th-6th order), run
- Great lake, pelagic, midwater
Management
Exotic species, such as the alewife and sea lamprey, are major threats to lake herring. Eutrophication is the greatest threat to inland lake populations of lake herring. Local pollution also affects this species. Hence, exotic species and nutrient management are important to this species. In addition, the loss of food resources such as Diporeia, is an issue for this species.
Active Period
Migration from first week of April to first week of June
Spawning from fourth week of September to first week of December
Survey Methods
- Seines
- Survey Period: From first week of November to fourth week of October
- Gill nets
- Survey Period: From first week of November to fourth week of October
Page Citation
References
Survey References
- Murphy, B.R. and D.W. Willis, eds. 1996. Fisheries Techniques, 2nd ed. American Fisheries Society, Bethesda. 732pp.
Technical References
- Hubbs, C.L. and K.F. Lagler. 2004. Fishes of the Great Lakes region, revised edition. Rev.ed. G.R. Smith. The University of Michigan Press, Ann Arbor MI. 276pp.