Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal; profondeur 100 - 200 m (Ref. 59043). Temperate; 46°N - 45°N, 10°E - 11°E
Europe: Lake Garda, Italy. Introduced in several lakes of northern Italy, Germany and New Zealand but all introductions failed.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 50.0 cm SL mâle / non sexé; (Ref. 59043); âge max. reporté: 5 années (Ref. 59043)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Distinguished from congeners in Italy by its unique almost absence of dark spots on head. Differs further by the combination of the following characters: adults lacking parr-marks; and outside spawning season silvery, with few, very small dark spots on body; during spawning season, some males show a dark marbled color pattern (Ref. 59043).
Body shape (shape guide): fusiform / normal.
Lives in lakes at 100-200 m depth. Feeds predominantly on zooplankton. Also preys on other benthic invertebrates during summer. Spawns close to underwater springs at 50-300 m depths (Ref. 59043). Threatened due to habitat destruction, pollution and overfishing (Ref. 26100) and possibly due to the introduction of exotic Coregonus and Salmonidae (Ref. 59043).
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Kottelat, M. and J. Freyhof, 2007. Handbook of European freshwater fishes. Publications Kottelat, Cornol and Freyhof, Berlin. 646 pp. (Ref. 59043)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menacé (EN) (B1ab(iii)+2ab(iii)); Date assessed: 25 March 2024
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial; Aquaculture: commercial
Outils
Articles particuliers
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Sources Internet
Estimations basées sur des modèles
Indice de diversité phylogénétique (Réf.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01047 (0.00486 - 0.02255), b=3.03 (2.86 - 3.20), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.5 ±0.37 se; based on food items.
Résilience (Réf.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Preliminary K or Fecundity.).
Vulnérabilité de la pêche (Ref.
59153): Moderate vulnerability (44 of 100).
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