AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Coregonus nasus [WoRMS] | |
Authority | (Pallas, 1776) | |
Family | Salmonidae | |
Order | Salmoniformes | |
Class | Actinopterygii | |
Phylum | Chordata | |
Synonym (?) | Coregonus kennicotti (Milner, 1883) Coregonus nasus kennicotti (Milner, 1883) Salmo nasus (Pallas, 1776) |
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Sub-species level (?) | Not entered |
Native origin (?) | Ocean: Arctic Comments: The broad whitefish is found in Arctic-draining basins in northern Eurasia and North America from the Pechora River to the Perry River. |
Life form / Life stage (?) |
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Sociability / Life stage (?) |
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Reproductive frequency (?) | Iteroparous References (not structured): Thorsteinson, L.K., Love, M.S., eds., 2016,. Alaska Arctic marine fish ecology catalog: U.S. Geological Survey Scientific Investigations Report 2016-5038 (OCS Study, BOEM 2016-048), pp. 768. |
Reproductive type (?) | Sexual References: Freyhof J, Kottelat M (2008) Coregonus nasus. In: IUCN 2012. IUCN Red List of Threatened Species. Comments: Males reproduce for the first time at 4-8 years, females at 5-9. |
Developmental trait (?) | Spawning References: Freyhof J, Kottelat M (2008) Coregonus nasus. In: IUCN 2012. IUCN Red List of Threatened Species. Comments: Spawning lasts 5-7 days and fish leave spawning site soon after, migrating downstream to overwinter in deeper places of lower stretches of rivers together with older juveniles. In spring, alevins drift from spawning sites downstream with flood-water and forage in floodplain lakes and oxbows where they remain until end of summer before moving to river or reaching maturity. |
Characteristic feeding method / Life stage (?) |
References (not structured): Freyhof J, Kottelat M (2008) Coregonus nasus. In: IUCN 2012. IUCN Red List of Threatened Species. Comments: Juveniles feed on zooplankton, adults on benthos, mainly chironomid larvae and molluscs. |
Mobility / Life stage (?) |
References (not structured): Thorsteinson, L.K., Love, M.S., eds., 2016,. Alaska Arctic marine fish ecology catalog: U.S. Geological Survey Scientific Investigations Report 2016-5038 (OCS Study, BOEM 2016-048), pp. 768. Comments: Eggs habitat: gravel beds in fast flowing freshwater rivers. |
Salinity tolerance range (?) | Exact range: 0 - 30 References: Thorsteinson, L.K., Love, M.S., eds., 2016,. Alaska Arctic marine fish ecology catalog: U.S. Geological Survey Scientific Investigations Report 2016-5038 (OCS Study, BOEM 2016-048), pp. 768. Comments: Salinity: 0–30 parts per thousand, but rare in higher salinity waters. Juveniles cope with salinities greater than 15–20 parts per thousand for only short periods, whereas larger fish are more tolerant of brackish conditions. |
Habitat modifying ability potential (?) | Unknown |
Toxicity / Life stage (?) | Not relevant Comments: The fish is commercially valuable. |
Bioaccumulation association (?) | Unknown |
Known human health impact? | Known References: Thorsteinson, L.K., Love, M.S., eds., 2016,. Alaska Arctic marine fish ecology catalog: U.S. Geological Survey Scientific Investigations Report 2016-5038 (OCS Study, BOEM 2016-048), pp. 768. Comments: Among the most important food fishes in the Arctic, taken in large numbers in the Kotzebue region on the Chukchi Sea, and from about Barrow, Alaska, to the Coppermine River, Northwest Territories, Canada, in the Beaufort Sea. |
Known economic impact? | Known References: Treble, M. A. 1996. Broad whitefish (Coregonus nasus) of the lower Mackenzie River: Biological characteristics, commercial and subsistence harvest trends, and local management issues. Comments: Currently, Broad Whitefish are not commercially harvested. Repeated efforts to create viable, large-scale commercial fisheries for this species have failed, although they were caught and sold as by-catch in the Arctic Cisco fishery on the Colville River |
Known measurable environmental impact? | Known References: Barker, O. E., Derocher, A. E. 2009. Brown bear (Ursus arctos) predation of broad whitefish (Coregonus nasus) in the Mackenzie Delta Region, Northwest Territories. Arctic, pp. 312-316. Leppi, J. C., Rinella, D. J., Wipfli, M. S., Liljedahl, A. K., Seitz, A. C., Falke, J. A. 2023. Climate change risks to freshwater subsistence fisheries in Arctic Alaska: insights and uncertainty from Broad Whitefish Coregonus nasus. Fisheries, 48(7), pp. 295-306. Comments: Whitefish may play an important role in the foraging ecology of some Arctic brown bears. Warming thermal regimes will generally be beneficial for Broad Whitefish populations, providing greater growth potential and expanding overwintering habitat, with potential for greater subsistence harvest. |
Included in the Target Species list? | No References: HELCOM, 2009. Alien Species and Ballast Water [PDF]. Available at: (https://archive.iwlearn.net/helcom.fi/stc/files/shipping/Table_2_Alienspecies_%20lists_2009.pdf) |
Association with vessel vectors (?) | Unknown |
Last update by | Sandra Gečaitė, 2024-07-10 |