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Acipenser baerii Brandt, 1869

Siberian sturgeon
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Acipenser baerii
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Classification / Names Κοινά ονόματα | Συνώνυμα | Catalog of Fishes(Γένος, Είδη) | ITIS | CoL | WoRMS | Cloffa

> Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons) > Acipenserinae
Etymology: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335).

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

; Γλυκού νερού; Υφάλμυρο βενθικό(ς); pH range: 7.0 - 7.5; dH range: ? - 20; ποταμόδρομος (Ref. 57765); εύρος βάθους 0 - 200 m (Ref. 57765), usually 1 - 8 m (Ref. 57765). Temperate; 1°C - 19°C (Ref. 57765); 74°N - 46°N, 64°E - 162°E

Κατανομή Χώρες | Περιοχές FAO | Οικοσυστήματα | Παρουσίες | Point map | Εισαγωγές | Faunafri

Asia: Siberia, rivers Ob, Irtysh, Yenisei, Lena, Kolyma, Khatanga, Pyasina, Anabar, Olenyok, Yana and Lake Baikal (Ref. 57765). Non-migratory populations exist in all river systems (Ref. 57765).

Length at first maturity / Μέγεθος / Βάρος / Age

Maturity: Lm 95.5, range 65 - 167 cm
Max length : 200 cm TL αρσενικό/απροσδιόριστο; (Ref. 40476); μεγ. δημοσιευμένο βάρος: 210.0 kg (Ref. 59043); μεγ. αναφερόμενη ηλικία: 63 έτη (Ref. 57765)

Short description Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία

Extended snouts; four barbels in front of the mouth (Ref. 4639). The back is light grey to dark brown colored. The belly color varies from white to clear yellow. Five row s of scutes: 10-19D, 32-59L, 7-16V. Small star-like scutes between the main ones. Clearly slit inferior lip (Ref. 40476).

Βιολογία     Γλωσσάρι (π.χ. epibenthic)

Found in deep and shallow parts of rivers, with moderate to swift current usually at depths of 1 to 8 m (Ref. 57765). Adults live essentially in freshwater although some fish frequently occur in estuaries. Males are sexually mature between 9 and 29 years; females between 9 and 34 years (Ref. 57765). Spawn in main river channel over stone-gravel or gravel-sand bottom and with strong current (Ref. 59043).

Life cycle and mating behavior Maturities | Αναπαραγωγή | Spawnings | Egg(s) | Fecundities | Προνύμφες

Potamodromous species (Ref. 57765). In a natural environment, males reach sexual maturity at 9-1 5 years of age and females at 16-20 years (in water recirculation systems, sexual maturity can first occur at 5 years). Spawning happens in the summer and generally every two years. Membranes on eggs become increasingly more sticky after fertilization and this allows them to stick to the substratum. This can become a problem in nurseries, but it is solved by washing the eggs in clay or diatomaceous earth suspensions. Caviar (not fecundated ovocites ) can be over 1 0% of the corporal weight of a mature female. Incubation lasts about 1 6 days (at 10-1 5°). Larval development lasts about 20 days (at 18°). Egg size 3.0-3.6 mm, larval length at hatching 10-12 mm.

Main reference Upload your references | Αναφορές | Συντονιστής | Συνεργάτες

Baillie, J. and B. Groombridge (eds.), 1996. 1996 IUCN red list of threatened animals. IUCN, Gland, Switzerland. 378 p. (Ref. 12255)

IUCN Red List Status (Ref. 130435)

  Critically Endangered (CR) (A2bd); Date assessed: 14 September 2019

CITES


Threat to humans

  Harmless





Human uses

αλιεία: πολύ εμπορικό; Υδατοκαλλιέργειες: Εμπορικό(ά); Ενυδρείο: Δημόσια ενυδρεία
FAO - Aquaculture systems: Παραγωγή, species profile; αλιεία: species profile; Publication: search | FishSource | Η θάλασσα γύρω μας

Περισσότερες πληροφορίες

Trophic ecology
Τροφικά αντικείμενα
Diet compositions
Food consumptions
Food rations
Θηρευτές
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances
Life cycle
Αναπαραγωγή
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Προνύμφες
Δυναμική προνυμφών
Anatomy
Gill areas
Εγκέφαλοι
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Κολυμβητικός τύπος
Swimming speeds
Visual pigment(s)
Ήχοι ψαριών
Diseases / Parasites
Toxicities (LC50s)
Genetics
Γενετική
Electrophoreses
Heritabilities
Human related
Aquaculture systems
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Διαδικτυακές πηγές

Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00156 - 0.00465), b=3.26 (3.12 - 3.40), in cm total length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
Τροφικό Επίπεδο (Ref. 69278):  3.3   ±0.2 se; based on diet studies.
Ελαστικότητα (Ref. 120179):  Πολύ χαμηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού > 14 έτη (tm=7-34; tmax=63; Fec=16,500-420,000; K=0.03).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (87 of 100).
Price category (Ref. 80766):   Unknown.
Nutrients (Ref. 124155):  Calcium = 15.6 [9.1, 26.8] mg/100g; Iron = 0.253 [0.156, 0.402] mg/100g; Protein = 17.3 [14.8, 20.1] %; Omega3 = 0.381 [0.218, 0.653] g/100g; Selenium = 25.6 [13.5, 47.2] μg/100g; VitaminA = 6.04 [2.17, 16.19] μg/100g; Zinc = 0.514 [0.371, 0.719] mg/100g (wet weight);