分類 / Names
俗名 | 同種異名 | Catalog of Fishes(屬, 種) | ITIS | CoL | WoRMS | Cloffa
Chondrostei >
Acipenseriformes (Sturgeons and paddlefishes)
鱘形目 (Sturgeons and paddlefishes) >
Acipenseridae (Sturgeons)
鱘科 (Sturgeons) > Acipenserinae
Etymology: Pseudoscaphirhynchus: Greek, pseudes = false + Greek, skaphe = boat + Greek, rhyngchos = snout (Ref. 45335).
Issue
Species of the genus Pseudoscaphirhynchus belong to the subfamily Acipenserinae, and not Scaphirhynchinae as it was previously considered (V. Birstein, pers. comm. 03/05 ).
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水; 半鹹淡水 居於水底的; 河川洄游 (Ref. 51243); 深度上下限 1 - 2 m (Ref. 109751). 溫帶; 10°C - 20°C (Ref. 2059)
Asia: Former USSR: Amu Darya River from the Pyandzh to the mouths and lower tributaries. Sometimes in the brackish water of Taldyk Bay, the delta of the Amu Darya in the Aral Sea. Considered close to extinction (Ref. 6866). Registered in the 1984 USSR Red Book; 1985 Turkmen SSR Red Data Book; 1996 IUCN Red List (Ref. 35930).
亞洲: 前蘇聯: 到河口及下游支流的阿姆河從皮延玆河。 有時在 Taldyk 海灣的半淡鹹水, 在鹹海中的阿姆三角洲。 被認為接近滅絕.(參考文獻 6866) 國際間的買賣限制 ( CITES2, 自從 1.4.98 以後; CMS 附錄 2). 在 1984 蘇聯紅皮書中登記了; 1985 土庫曼 SSR 保育紅皮書; 1996 IUCN 警戒名單; d 1997< b>CITES 列出.(參考文獻 35930)
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 45.0 range ? - ? cm
Max length : 75.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 593); 最大體重: 2.0 kg (Ref. 593)
Its natural habitat and population have declined due to the breakage of the hydrological regime of the Amu Dariya River. Usual weight not more than 600-700 grams. Females with mature hard roe, very rare. Apparently sensitive to oxygen content in the water, changes in its chemical content, and to pollution. Fishing is prohibited (Ref. 35930). Spawns at 16° C (Ref. 719).
它的自然棲息地與族群已經消退由於 Amu Dariya 河的水文制度的破壞。 平常的重量不超過 600-700 克。 雌魚有成熟的堅硬魚白, 非常稀有的。 顯然地在水 , 它的化學內容的改變對含氧量敏感, 與對污染。 釣魚被禁止。 (參考文獻 35930) 產卵在 16個 ° C 。 (參考文獻 719)
Life cycle and mating behavior
Maturities | 繁殖 | Spawnings | Egg(s) | Fecundities | 仔魚
亞洲: 前蘇聯: 到河口及下游支流的阿姆河從皮延玆河。 有時在 Taldyk 海灣的半淡鹹水, 在鹹海中的阿姆三角洲。 被認為接近滅絕.(參考文獻 6866) 國際間的買賣限制 ( CITES2, 自從 1.4.98 以後; CMS 附錄 2). 在 1984 蘇聯紅皮書中登記了; 1985 土庫曼 SSR 保育紅皮書; 1996 IUCN 警戒名單; d 1997< b>CITES 列出.(參考文獻 35930)
Berg, L.S., 1962. Freshwater fishes of the U.S.S.R. and adjacent countries. volume 1, 4th edition. Israel Program for Scientific Translations Ltd, Jerusalem. (Russian version published 1948). (Ref. 593)
IUCN 瀕危狀態 (Ref. 130435)
極危 (CR) (A2c); Date assessed: 14 September 2019
人類使用
漁業: 商業性
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00331 (0.00148 - 0.00739), b=3.16 (2.98 - 3.34), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.4 ±0.3 se; based on diet studies.
Generation time: 8.5 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
回復力 (Ref.
120179): 低的, 最小族群倍增時間4.5 - 14 年 (K=0.16; tm=6-7).
Fishing Vulnerability (Ref.
59153): High vulnerability (59 of 100).
