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Acipenser baerii Brandt, 1869

Siberian sturgeon
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Image of Acipenser baerii (Siberian sturgeon)
Acipenser baerii
Picture by Hartl, A.

Common names from other countries

Классификация / Names народные названия | синонимы | Catalog of Fishes(род, виды) | 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 экология

; пресноводный; солоноватоводный демерсальный; pH range: 7.0 - 7.5; dH range: ? - 20; мигрирует в реке (Ref. 57765); пределы глубины 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

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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 / Size / Вес / Возраст

Maturity: Lm 95.5, range 65 - 167 cm
Max length : 200 cm TL самец/пол неопределен; (Ref. 40476); наибольший вес (опубликованные данные): 210.0 kg (Ref. 59043); наибольший возраст (опубликованны данные): 63 годы (Ref. 57765)

Краткое описание определительные ключи | морфология | морфометрия

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).

биология     глоссарий (например 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 | размножение | Spawnings | Egg(s) | Fecundities | личинки

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.

Основная ссылка Upload your references | ссылки | координатор | соавторы

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

Статус Красного Списка МСОП (Ref. 130435)

  В критическом состоянии (CR) (A2bd); Date assessed: 14 September 2019

CITES (Ref. 128078)


Угроза для людей

  Harmless




Использование человеком

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дополнительная информация

Trophic ecology
пищевые объекты
Diet compositions
Food consumptions
Food rations
хищники
Ecology
экология
Home ranges
Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Размерный состав
Mass conversions
Recruitments
Abundances
Life cycle
размножение
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
личинки
динамика численности личинок
Anatomy
Gill areas
мозг
Otoliths
Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
звуки, издаваемые рыбами
Diseases / Parasites
Toxicities (LC50s)
Genetics
генетика
Electrophoreses
Heritabilities
Human related
Aquaculture systems
особенности рыбоводства
степень растяжения
Ciguatera cases
Stamps, coins, misc.
Outreach
соавторы
References
ссылки

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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).
Trophic level (Ref. 69278):  3.3   ±0.2 se; based on diet studies.
устойчивость к внешним воздействиям (Ref. 120179):  очень низкий, минимальное время удвоения популяции более 14 лет (tm=7-34; tmax=63; Fec=16,500-420,000; K=0.03).
Fishing Vulnerability (Ref. 59153):  Very high vulnerability (87 of 100).
Категория цены (Ref. 80766):   Unknown.