Environment: milieu / climate zone / depth range / distribution range
Ecologie
marien; zoet water; brak water demersaal; anadroom (Ref. 51243). Temperate; 56°N - 33°N, 125°E - 145°E (Ref. 54262)
Northwest Pacific: Bering Sea, Tumnin (Datta) river, to northern Japan and Korea. This species was formerly regarded to be a population of Acipenser medirostris (Ref. 6866).
Grootte / Gewicht / Leeftijd
Maturity: Lm ?  range ? - ? cm
Max length : 150 cm TL mannelijk / geslacht onbekend; (Ref. 12218)
Dorsale stekels (totaal) : 0; Dorsale zachte stralen (totaal) : 33 - 40; Anale stekels: 0; Anale zachte stralen: 22 - 30. Body shields in 5 rows; dorsal shields 7 to 11, lateral 22 to 36 and ventral 10.
Commercially cultured in Japan (Ref. 6866). From April to May adults feed in fresh water and return to the ocean during the fall (Ref. 12218). Generation time: 15 years (Ref. 116373).
Levenscyclus en paargedrag
Maturities | Voortplanting | Spawnings | Egg(s) | Fecundities | Larven
Eggs are laid from April to August under the substrate in sandy areas (Ref. 12218).
Birstein, V.J., 1993. Sturgeons and paddlefishes: threatened fishes in need of conservation. Conserv. Biol. 7:773-787. (Ref. 6866)
Status op de Rode Lijst van het IUCN (Ref. 130435)
Gevaar voor de mens
Harmless
Gebruik door de mens
Visserij: van minder commercieel belang; Aquacultuur: commercieel
Tools
Speciale rapporten
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Estimates based on models
Preferred temperature (Ref.
123201): 13.6 - 20.1, mean 18.3 °C (based on 34 cells).
Fylogenetische diversiteitsindex (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00324 (0.00142 - 0.00736), b=3.17 (2.99 - 3.35), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trofisch niveau (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Weerstandsvermogen (Ref.
120179): Zeer laag, minimale populatieverdubbelingstijd meer dan 14 jaar (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (90 of 100).