Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce; saumâtre benthopélagique; pH range: 7.0 - 7.5; dH range: 12 - 15. Temperate; 10°C - 22°C (Ref. 2059)
Europe: restricted to seven streams of Crimea of the Black and Azov Sea basins (Ref. 59043). Asia: Turkey (Ref. 58342).
Length at first maturity / Taille / Poids / Âge
Maturity: Lm ?, range 10 - ? cm
Max length : 70.0 cm SL mâle / non sexé; (Ref. 59043); common length : 18.0 cm TL mâle / non sexé; (Ref. 1441)
Description synthétique
Morphologie | Morphométrie
The only species of the genus in Crimea Peninsula which can be distinguished from congeners in Black Sea basin by the possession of the following characters: tip of dorsal fin slightly pointed; posterior margin of dorsal fin slightly concave; last simple dorsal ray weak, serrated along its middle, on 50-70% of its length; lower lip with a median swollen pad; fine dark spots or large blotches in individuals larger than 8 cm SL; scales with small epithelial crests; lateral line with 51-63 scales; and pelvic fin origin about below dorsal fin origin (Ref. 59043).
Occurs from mountain streams with strong current to brackish estuaries, preferring river stretches at 100-600 m above sea level. Spawns on gravel or rock bottom. Feeds mainly on zoobenthos. Threatened due pollution and water abstraction. Water abstraction is expected to increase in all streams of Crimea (Ref. 59043).
Life cycle and mating behavior
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Undertake upstream movement to the upper reaches or near rapids to spawn on gravel or rock bottom. Females lay in 1-3 portions non-sticky eggs. Eggs lie among or under pebbles until hatching (Ref. 59043).
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)
Menace pour l'homme
Harmless
Utilisations par l'homme
Plus d'informations
Taille/ÂgeCroissanceLongueur-poidsLongueur-longueurFréquences de longueursMorphométrieMorphologieLarvesDynamique des populations larvairesRecrutementAbondanceBRUVS
RéférencesAquacultureProfil d'aquacultureSouchesGénétiqueElectrophoresesHéritabilitéPathologiesTraitementNutrientsMass conversion
CollaborateursImagesStamps, Coins Misc.SonsCiguateraVitesseType de nageSurface branchialeOtolithesCerveauxVision
Outils
Articles particuliers
Télécharger en XML
Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00676 (0.00347 - 0.01318), b=3.02 (2.85 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.1 ±0.4 se; based on size and trophs of closest relatives
Résilience (Ref.
120179): Faible, temps minimum de doublement de population : 4,5 à 14 années (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Moderate to high vulnerability (54 of 100).
