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Oncorhynchus keta  (Walbaum, 1792)

Chum salmon
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Native range | All suitable habitat | Point map | Year 2100
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Oncorhynchus keta   AquaMaps   Data sources: GBIF OBIS
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Image of Oncorhynchus keta (Chum salmon)
Oncorhynchus keta
Picture by Keeley, E.R.


Canada country information

Common names: Chum, Chum salmon, Chum salmon
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: commercial | Ref: Coker, G.A., C.B. Portt and C.K. Minns, 2001
Aquaculture: | Ref:
Regulations: restricted | Ref: Fisheries Branch, 1994
Uses: gamefish: yes;
Comments: Native species ranging from northern Canada to British Columbia; introduced into Ontario (Ref. 52559). Prepared smoked by the 'First Nations' (Ref. 6885). Utilized as dog food in the past (Ref. 4925). Also Ref. 5723, 9988, 27436, 95143, 96339. Status of threat of Columbia River population: threatened. Criteria: 1,2 (http://fisc.er.usgs.gov/afs/) (Ref. 81264).
National Checklist:
Country Information: httpss://www.cia.gov/library/publications/resources/the-world-factbook/geos/ca.html
National Fisheries Authority: https://www.ncr.dfo.ca/home_e.htm
Occurrences: Occurrences Point map
Main Ref: Scott, W.B. and E.J. Crossman, 1998
National Database:

Classification / Names

Actinopterygii (strålfeniga fiskar) > Salmoniformes (Salmons) > Salmonidae (Salmonids) > Salmoninae
Populärnamn | synonymer | Catalog of Fishes (gen., sp.) | ITIS | CoL

Common names from other countries

Main reference

Size / Vikt / Age

Max length : 100.0 cm FL hane/ej könsbestämd; (Ref. 559); common length : 58.0 cm TL hane/ej könsbestämd; (Ref. 3561); publicerad maxvikt: 15.9 kg (Ref. 40637); rapporterad maxålder: 7 år (Ref. 1998)

Length at first maturity
Lm 70.0  range ? - ? cm

Miljö

; marina; sötvatten; brackvatten bentopelagisk; anadrom (Ref. 51243); djupintervall 0 - 250 m (Ref. 50550), usually ? - 61 m (Ref. 96339)

Klimat / Range

Temperate; ? - 24°C (Ref. 35682), preferred 4°C (Ref. 107945); 67°N - 24°N, 130°E - 110°W (Ref. 54684)

Utbredning

North Pacific: Korea , Japan, Okhotsk and Bering Sea (Ref. 1998), Arctic Alaska south to San Diego, California, USA. Asia: Iran (Ref. 39702).
Länder | FAO områden | Ekosystem | Förekomster | Utplanteringar

Short description

Taggstrålar i ryggfenan (totalt): 0; Mjukstrålar i ryggfenan (totalt): 10-14; Taggstrålar i analfenan 0; Mjukstrålar i analfenan: 13 - 17; Ryggkotor: 59 - 71. Distinguished by the lack of distinct black spots on the back and tail and by the presence of 18 to 28 short, stout, smooth gill rakers on the first arch (Ref. 27547). Pelvic fins with axillary process; caudal truncate to slightly emarginate (Ref. 27547). Large individuals are steel-blue dorsally, with speckles of black; silver on the sides; silvery to white ventrally. Males have tinges of black on the tips of its caudal, anal and pectoral fins. Spawning males are dark olive to black dorsally; grey-red with green vertical bars on the sides; dark grey ventrally; anal and pelvic fins with white tips. Spawning females resemble spawning males but less distinctly marked.

Biologi     Ordlista (t.ex. epibenthic)

Inhabits ocean and coastal streams. Migrating fry form schools in estuaries, remain close to shore for a few months and finally disperse to enter the sea (Ref. 1998). Epipelagic (Ref. 58426). Juveniles and adults feed mainly on copepods, tunicates and euphausiids but also on pteropods, squid and small fishes (Ref. 1998). Adults cease feeding in freshwater (Ref. 1998). Males and females die after spawning. The catch is mostly canned but also sold fresh, dried-salted, smoked, and frozen. Eaten steamed, fried, broiled, boiled, microwaved, and baked (Ref. 9988). Utilized for caviar.

IUCN Red List Status (Ref. 115185)

Threat to humans

  Harmless



Human uses

Fiskeri: kommersiellt viktig; Vattenbruk: kommersiell; sportfisk: ja; Akvarium: Offentliga akvarier

Ytterligare information

referenser
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Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805)
PD50 = 0.5000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Trofisk nivå (Ref. 69278)
3.7   ±0.2 se; Based on diet studies.

Resiliens (Ref. 69278)
Mellan, lägsta populationsfördubblingstid 1,4-4,4 år (K=0.27-0.45; tm=2-5; tmax=6)

Vulnerability (Ref. 59153)
Moderate to high vulnerability (49 of 100)
Price category (Ref. 80766)
Medium