AquaNISInformation system on aquatic non-indigenous and cryptogenic species |
Species | Oncorhynchus nerka [WoRMS] | |
Authority | (Walbaum, 1792) | |
Family | Salmonidae | |
Order | Salmoniformes | |
Class | Actinopterygii | |
Phylum | Chordata | |
Synonym (?) | ||
Sub-species level (?) | Not entered |
Native origin (?) | Ocean: Pacific Comments: Western coast of North America |
Life form / Life stage (?) |
|
Sociability / Life stage (?) |
|
Reproductive frequency (?) | Semelparous References (not structured): Cook, K. V., Crossin, G. T., Patterson, D. A., Hinch, S. G., Gilmour, K. M., Cooke, S. J. 2014. The stress response predicts migration failure but not migration rate in a semelparous fish. General and Comparative Endocrinology, 202, pp. 44-49. |
Reproductive type (?) | Sexual References: Brett, J. R. 1983. Life energetics of sockeye salmon, Oncorhynchus nerka. Behavioural energetics: the cost of survival in vertebrates, 29-63. Comments: Sockeye salmon mate seasonally. Females lay their eggs and are then to select a mate. Males are chosen after they have come along her side and presented themselves multiple times. Sockeye salmon breed from July to October.When females arrive, they create a nest in the gravel in which they lay their eggs. After fertilization, eggs stay in the gravel nest for 32 to 42 days. Sockeye salmon are independent when hatched and are able to reproduce at 4 to 5 years of age. |
Developmental trait (?) | Spawning References: Murua, H., Saborido-Rey, F. 2003. Female reproductive strategies of marine fish species of the North Atlantic. Comments: At spawning, the head of the males becomes bright to olive green, with black on the snout and upper jaw. Adult sockeyes return to natal streams to spawn. Female may spawn with several dominant males. All adult sockeye die after spawning. |
Characteristic feeding method / Life stage (?) |
References (not structured): Graynoth, E., L. Bennett, J. Pollard. 1986. Diet of landlocked sockeye salmon (Oncorhynchus nerka) and trout in the Waitaki lakes, New Zealand. New Zealand Journal of Marine and Freshwater Research, 20, pp. 537-547. Comments: Sockeye salmon, unlike other species of Pacific salmon, feed extensively on zooplankton during both freshwater and saltwater life stages. They also tend to feed on small aquatic organisms such as shrimp. Insects and occasionally snails are part of their diets at the juvenile stage. |
Mobility / Life stage (?) |
Comments: Eggs are placed on gravel or sand. |
Salinity tolerance range (?) | Exact range: 0 - 28 References: Leppakoski, E. 1984. Introduced species in the Baltic sea and its coastal ecosystems. Ophelia Suppl., 3, pp. 123-135. Rice, S. D., Thomas, R. E., Moles, A. 1994. Physiological and growth differences in three stocks of underyearling sockeye salmon (Oncorhynchus nerka) on early entry into seawater. Canadian Journal of Fisheries and Aquatic Sciences, 51(4), pp. 974-980. Comments: The ability to tolerate salt water increases rapidly in the spring and tolerance increases with size. It accomplish growth either by migrating soon after emergence to an estuary, where the salinity is typically 26-28 ppt |
Habitat modifying ability potential (?) | Keystone species References: COSEWIC 2003. COSEWIC assessment and status report on the sockeye salmon Oncorhynchus nerka (Cultus population) in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. ix + 57 pp. Comments: A keystone species in Alaska is Oncorhynchus nerka, commonly known as sockeye salmon. |
Toxicity / Life stage (?) | Not relevant |
Bioaccumulation association (?) | Anthropogenic chemical compounds References: Ewald, G., Larsson, P., Linge, H., Okla, L., Szarzi, N. 1998. Biotransport of organic pollutants to an inland Alaska lake by migrating sockeye salmon (Oncorhynchus nerka). Arctic, pp. 40-47. Comments: Pollutants accumulated by the salmon during their ocean life stage were not eliminated during migration, but were transported to the spawning lakes and accumulated in the freshwater food web there. |
Known human health impact? | Known References: Wan, Y., Li, J., Solval, K. M., Stine, J. J., Bechtel, P. J., Sathivel, S. 2012. Physicochemical properties of red salmon oil (Oncorhynchus nerka) and microencapsulated red salmon oil added to baby food. Journal of the American Oil Chemists' Society, 89, pp. 727-734. Comments: Harmless. Sockeye salmon is a nutrient-dense food source that provides numerous health benefits. It is high in protein, providing about 24 grams per one-hundred-gram serving, as well as omega-3 fatty acids, which are important for heart health, brain development and immunity. |
Known economic impact? | Known References: COSEWIC 2003. COSEWIC assessment and status report on the sockeye salmon Oncorhynchus nerka (Cultus population) in Canada. Committee on the Status of Endangered Wildlife in Canada. Ottawa. ix + 57 pp. Comments: Sockeye salmon is one of the most commercially valuable species of wild salmon, and it has been sustainably harvested by fisheries around the world for many years. |
Known measurable environmental impact? | Not known Comments: Not available. |
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 Comments: Not available. |
Last update by | Sandra Gečaitė, 2024-07-19 |