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Coregonus widegreni Malmgren, 1863

Valaam whitefish
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Coregonus widegreni
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> Salmoniformes (Salmons) > Salmonidae (Salmonids) > Coregoninae
Etymology: Coregonus: Greek, kore = pupils of the eye + Greek, gonia = angle (Ref. 45335).

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

; zoet water demersaal; anadroom; diepte 30 - 150 m (Ref. 59043). Temperate

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Europe: Baltic: Bothnian Gulf, Gotland (missing along Swedish coast southward of Stockholm); southern Baltic: from Germany to Gulf of Finland; several landlocked populations in Sweden (Lakes Vänern, Vättern, Locknesjön, Storvindeln, Storlaisan, Skalka-Parkijaur, Arjeplog) and Russia (Neva drainage, Lakes Ladoga and Onega).

Lengte bij maturiteit / Grootte / Gewicht / Leeftijd

Maturity: Lm 29.2, range 19 - 46 cm
Max length : 55.0 cm SL mannelijk / geslacht onbekend; (Ref. 59043); max. gepubliceerd gewicht: 2.0 kg (Ref. 593); max. gerapporteerde leeftijd: 20 Jaren (Ref. 59043)

Biologie     Verklarende woordenlijst (bv. epibenthic)

Recorded from coastal waters at sea. Lacustrine, at depths greater than 30 m, in Lake Ladoga commonly at 50-150 m (Ref. 59043). Specimens measuring 36-40 cm are more than 5 years old. Spawns for the first time at 4-6 years (Ref. 59043). Spawns from the end of November to 20 December (Ref. 593). Oviparous (Ref. 205). Eggs are buried in unguarded nests (Ref. 205). Feeds on benthic invertebrates, especially gammarids, molluscs and insect larvae (Ref. 59043).

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Distinct pairing (Ref. 205).

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Kottelat, M., 1997. European freshwater fishes. An heuristic checklist of the freshwater fishes of Europe (exclusive of former USSR), with an introduction for non-systematists and comments on nomenclature and conservation. Biologia, Bratislava, 52/Suppl. 5:1-271. (Ref. 13696)

Status op de Rode Lijst van het IUCN (Ref. 130435)

  Onvoldoende gegevens (DD) ; Date assessed: 01 January 2008

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaar voor de mens

  Harmless





Gebruik door de mens

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Estimates based on models

Fylogenetische diversiteitsindex (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00537 (0.00325 - 0.00886), b=3.22 (3.08 - 3.36), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Trofisch niveau (Ref. 69278):  3.4   ±0.3 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (K=0.14-0.91; tm=3-5; tmax=19).
Fishing Vulnerability (Ref. 59153):  Moderate to high vulnerability (47 of 100).