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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.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce demersale. Temperate
Europe: Belarus.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 7.4 cm SL maschio/sesso non determinato; (Ref. 132919)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Vertebre: 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.
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
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)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di nessun interesse
Strumenti
Rapporti speciali
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Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00832 (0.00340 - 0.02033), b=3.16 (2.98 - 3.34), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
Resilienza (Fonte Biblio. 120179) |
Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Preliminary K or Fecundity.). |
Vulnerabilità della pesca (Ref. 59153) |
Low to moderate vulnerability (31 of 100). 🛈 |