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> Acipenseriformes (Sturgeons and paddlefishes) > Acipenseridae (Sturgeons)
Etymology: Acipenser:Latin, acipenser = sturgeon, 1853 (Ref. 45335). Eponymy: ‘Mikado’ is a (now obsolete) term for the Emperor of Japan. [...] (Ref. 128868), visit book page. More on author: Hilgendorf.
البيئة: الوسط / المنطقة المناخية / نطاق العمق / نطاق التوزيع البيئة
بحري; المياه العذبة; مياه مخلوطة القاع; أسماك صاعدة (Ref. 131118). 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).
الحجم / وزن / العمر
النضج: Lm? range ? - ? cm Max length : 150 cm TL ذكر/ مختلط الجنس; (Ref. 12218)
الأشواك الظهرية (المجموع) : 0; الأشعة الظهرية الناعمة (المجموع) : 33 - 40; شوكة شرجية: 0; أشعه شرجية لينه: 22 - 30. Body shields in 5 rows; dorsal shields 7 to 11, lateral 22 to 36 and ventral 10. Body shape (shape guide): elongated; Cross section: angular.
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).
دورة الحياة وسلوك التزاوج النضج | التكاثر | وضع البيض | بيض | الخصوبة | اليرقات
Eggs are laid from April to August under the substrate in sandy areas (Ref. 12218).
