Acipenser baerii, Siberian sturgeon : fisheries, aquaculture, aquarium

Acipenser baerii Brandt, 1869

Siberian sturgeon
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Acipenser baerii
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分類 / Names 共通名の | 類義語 | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

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

Environment: milieu / climate zone / depth range / distribution range 生態学

; 新鮮な水; 汽水性の 底生の; pH range: 7.0 - 7.5; dH range: ? - 20; potamodromous (Ref. 57765); 深さの範囲 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

分布 国々 | 国連食糧農業機関の区域 | エコシステム | 事件 | Point map | 導入 | 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 / サイズ / 重さ / 年齢

Maturity: Lm 86.9, range 65 - 167 cm
Max length : 200 cm TL オス/雌雄の選別がない; (Ref. 40476); 最大公表体重: 210.0 kg (Ref. 59043); 最大記録サイズ: 63 年 (Ref. 57765)

簡単な記述 形態学 | 形態計測学

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).

生物学     用語集 (例 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 成熟 | 繁殖 | 放精 | | 生産力 | 幼生

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.

主な参考文献 Upload your references | 参考文献 | コーディネーター | 協力者

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

IUCNのレッドリストの状況は (Ref. 120744)

  絶滅危惧 (EN) (A2bcd+4bcd); Date assessed: 24 October 2009

CITES (Ref. 118484)


人間に対する脅威

  Harmless





Human uses

水産業: 高い商業の; 水産養殖: 商業; 水族館・水槽: 公共の水族館
FAO(水産養殖: 代謝, 種の外形; 水産業: 種の外形; publication : search) | FishSource | 私達の周りの海

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共通名の
類義語
代謝
捕食動物
生態毒性
繁殖
成熟
放精
卵の集合体
生産力

卵の開発
Age/Size
成長
体長-重さ
Length-length
体長組成
形態計測学
形態学
幼生
幼生の動力
補充
豊度
参考文献
水産養殖
水産養殖の紹介
緊張
遺伝子の
対立遺伝子頻度
遺伝
病気
行列
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シガテラ(食中毒の名前)
速度
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カマ
Otoliths

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インターネットの情報源

Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00269 (0.00157 - 0.00463), b=3.27 (3.13 - 3.41), in cm Total Length, based on LWR estimates for this species & Genus-body shape (Ref. 93245).
栄養段階 (Ref. 69278):  3.3   ±0.2 se; Based on diet studies.
回復力 (Ref. 120179):  非常に低い, 14年以上の倍増期間の最小個体群 (tm=7-34; tmax=63; Fec=16,500-420,000; K=0.03).
弱み (Ref. 59153):  Very high vulnerability (85 of 100) .
価格帯 (Ref. 80766):   Unknown.