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Salvelinus malma (Walbaum, 1792)

Dolly varden
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Native range | All suitable habitat | Point map | Year 2050
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Salvelinus malma   AquaMaps   Data sources: GBIF OBIS
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Alaska country information

Common names: [No common name]
Occurrence: native
Salinity: freshwater
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: gamefish: yes;
Comments: Occurs throughout Alaska (Ref. 27547); reported in Kukpuk River near Point Hope (Cape Lisburne) (pers.comm. Jack Donachy, 11/12). Seasonally abundant wherever present (Ref. 27547). Popular game fish (Ref. 1998). Also Ref. 5723, 6876, 86798, 10280, 10779, 11366, 11377, 12218, 27436, 43202, 96339, 119194, 121277.
National Checklist:
Country Information:
National Fisheries Authority: http://www.state.ak.us/local/akpages/FISH.GAME/adfghome.htm
Occurrences: Occurrences Point map
Main Ref: Scott, W.B. and E.J. Crossman, 1973
National Database:

Common names from other countries

Classification / Names Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa

> Salmoniformes (Salmons) > Salmonidae (Salmonids) > Salmoninae
Etymology: Salvelinus: Old name for char; it is the same root of german "saibling" = little salmon (Ref. 45335);  malma: malma which is the the common name for this species in Kamchatka (Ref. 1998).
  More on author: Walbaum.

Environment: milieu / climate zone / depth range / distribution range Ekologi

marina; sötvatten; brackvatten bentopelagisk; anadrom (Ref. 51243); djupintervall 0 - 200 m (Ref. 50550).   Temperate; 4°C - 18°C (Ref. 13614); 75°N - 38°N, 127°E - 123°W

Utbredning Länder | FAO områden | Ekosystem | Förekomster | Point map | Utplanteringar | Faunafri

North America: Arctic and Pacific drainages from lower Mackenzie River in Northwest Territories, Canada to Puget Sound and Quinault River in Washington, USA (Ref. 86798). Northwest Pacific: Korea to Bering Sea (Ref. 2850).

Length at first maturity / Size / Vikt / Age

Maturity: Lm 23.5, range 12 - 21 cm
Max length : 127 cm TL hane/ej könsbestämd; (Ref. 27436); common length : 37.5 cm TL hane/ej könsbestämd; (Ref. 12193); publicerad maxvikt: 18.3 kg (Ref. 27436)

Short description Bestämningsnycklar | Morfologi | Morfometri

Taggstrålar i ryggfenan (totalt) : 0; Mjukstrålar i ryggfenan (totalt) : 10 - 16; Taggstrålar i analfenan: 0; Mjukstrålar i analfenan: 10 - 15. Body elongate, somewhat rounded, greatest body depth below dorsal fin. Head rather long. Pelvic fins with free-tipped fleshy appendage above its insertion. Caudal emarginate (Ref. 27547). Color varies with size, locality and habitat. Sea-run adults with back, upper head, and upper sides dark blue, the sides silvery to white. In freshwater populations, the back and upper sides are olive green to brown, the sides a paler color but bright red in spawning fish and at all times in some areas of Alaska, the underside white to dusky. The dorsal surface are marked with yellow, orange or red spots, more numerous and those along the lateral line smaller, than in arctic char. Spawning males, especially of anadromous populations, turn red on the ventral surface and tip of snout. The lower jaw, operculum and parts of the head are black, the back and sides turn olive-brown. The spots become more vivid orange-red, the pectoral and anal fins red-black with a white leading edge, the snout thickens and the lower jaw turns up. Females change less.

Biologi     Ordlista (t.ex. epibenthic)

Occurs in deep runs and pools of creeks and small to large rivers; also in lakes and the sea (Ref. 5723, 86798). Lives in very clean mountain streams (Ref. 12218). Nerito-pelagic (Ref. 58426). Typically anadromous, but many populations are landlocked. Anadromous fish may spend 2-3 years at sea, evidently near shore, migrate upstream usually in fall, and spawn during spring (Ref. 86798). Young remain in streams for 3-4 years and feed on insects, leeches, snails, and salmon eggs (Ref. 1998) before entering brackish and salt water to feed on insects, fishes, and other invertebrates. Utilized fresh and eaten fried, broiled, and baked (Ref. 9988).

Life cycle and mating behavior Maturities | Reproduktion | Spawnings | Egg(s) | Fecundities | Larver

Adults from the sea and lakes enter rivers to spawn. A female selects a nest site and begins to dig a redd while the male continues to court her and drive away intruding males. Upon completion of the redd, both drop into it and release eggs and sperm. This may be repeated several times before the eggs are covered by the female who swims along the edge of the of the redd, sweeping small pebbles and other particles into it with her tail and anal fin. Later, she may dig again and further cover the eggs while preparing a new nest (Ref. 27547). Breeding is an annual event for southern populations; occurring every second or third year in the Arctic (Ref. 27547). Males and females reportedly die after spawning (Ref. 12218).

Main reference Upload your references | referenser | Koordinator | Medarbetare

Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)

IUCN Red List Status (Ref. 130435)


CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

Fiskeri: kommersiell; sportfisk: ja
FAO(Publication : search) | FishSource | Sea Around Us

Ytterligare information

Trophic ecology
Födoslag
Diet compositions
Food consumptions
Food rations
Predatorer
Ecology
Ekologi
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Reproduktion
Maturities
Fecundities
Spawnings
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Egg(s)
Egg developments
Larver
Larvdynamik
Anatomy
Gill areas
Hjärnstorlek
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fiskljud
Diseases / Parasites
Toxicities (LC50s)
Genetics
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Electrophoreses
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Estimates based on models

Preferred temperature (Ref. 115969): 0.2 - 8, mean 2.2 (based on 653 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00589 (0.00399 - 0.00870), b=3.04 (2.92 - 3.16), in cm Total Length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245).
Trofisk nivå (Ref. 69278):  4.4   ±0.6 se; based on diet studies.
Resiliens (Ref. 120179):  Låg, lägsta populationsfördubblingstid 4,5-14 år (tm=3-5).
Prior r = 0.24, 95% CL = 0.16 - 0.36, Based on 1 data-limited stock assessment.
Fishing Vulnerability (Ref. 59153):  High to very high vulnerability (70 of 100).
Price category (Ref. 80766):   Very high.