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Perciformes/Cottoidei (Sculpins) >
Cottidae (Sculpins)
Etymology: Cottus: Greek, kottos = a fish (Ref. 45335); dorofeevi: Name 'dorofeevi' in honor of zoologist Sergei A. Dorofeev, who organized and took part in the collection of type specimens in tributaries of the Western Dvina River.
Environnement : milieu / zone climatique / profondeur / gamme de distribution
Écologie
; eau douce démersal. Temperate
Europe: Belarus.
Taille / Poids / Âge
Maturité: Lm ?  range ? - ? cm
Max length : 7.4 cm SL mâle / non sexé; (Ref. 132919)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Vertèbres: 31 - 34. This species is distinguished from its congeners by the following set of characters: head pointed anteriorly and considerably flattened in dorso-ventral direction; dermal papillae on top and sides of head; large bony prickles under pectoral fins; long second dorsal fin (length of its base 40% SL); long pelvic fins reaching anus; incomplete trunk canal of seismosensory system with 25-27 pores, its end on vertical of last rays of anal fin; semicircular shape of genital papilla in males; all fins (including pelvic and anal) with dark spots. The new species differs from the closely related C. koshewnikowi in following features: abundance of melanophores on ventral side of body (vs. absence of melanophores); dermal papillae on upper and lateral parts of head (vs. absence of papillae and presence of dermal wrinkles); longer caudal peduncle (14.6±2.1 vs. 8.3±0.5% SL); large eye diameter (23.1±1.1 vs. 19.1±0.6% of head length); wider interorbital space (16.3±3.4 vs. 9.8±0.5% of head length). Cottus dorofeevi differs from another Eastern European species C. gratzianowi in following characters: branched rays in pectoral fin absent (vs. frequent presence in C. gratzianowi); gap absent and three pores in occipital commissure of lateral line system present (vs. presence of gap and four pores in C. gratzianowi); poorly developed lower lobes of mouth (vs. massive lobes in C. gratzianowi) (Ref. 132919).
Body shape (shape guide): elongated; Cross section: flattened.
Cycle de vie et comportement reproducteur
Maturité | Reproduction | Frai | Œufs | Fécondité | Larves
Sideleva, V.G. and Z.V. Zhidkov, 2024. Description of a new species of Cottus Linnaeus (Cottidae) from the Western Dvina / Daugava River system, Baltic Sea basin, based on integrative taxonomy. Zootaxa 5447(4):473-495. (Ref. 132919)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2025-2 (Global))
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: sans intérêt
Outils
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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=0.00832 (0.00345 - 0.02005), b=3.16 (2.98 - 3.34), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Niveau trophique (Réf.
69278): 3.2 ±0.4 se; based on size and trophs of closest relatives
Résilience (Réf.
120179): Milieu, temps minimum de doublement de population : 1,4 à 4,4 années (Preliminary K or Fecundity.).
Vulnérabilité de la pêche (Ref.
59153): Low vulnerability (10 of 100).
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