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: Acipenser: Latin, acipenser = sturgeon, 1853 (Ref. 45335).
More on author: Lesueur.
Environment: milieu / climate zone / depth range / distribution range
生態學
海洋; 淡水; 半鹹淡水 居於水底的; 溯河洄游 (Ref. 51243); 深度上下限 6 - 53 m (Ref. 93286), usually 6 - 34 m (Ref. 93286). 亞熱帶的; 49°N - 28°N, 82°W - 65°W (Ref. 54259)
North America: St. John River in Canada to St. Johns River in Florida, USA.
北美洲: 加拿大的聖約翰河到美國佛羅里達的聖約翰河。 國際間的買賣禁止。 ( 引用 I 自從 1.7.75 以後)
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 50.0, range 45 - 55 cm
Max length : 143 cm TL 雄魚/尚未辨別雌雄; (Ref. 6866); common length : 50.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大體重: 23.0 kg (Ref. 6866); 最大年齡: 67 年 (Ref. 6866)
背棘 (總數) : 0; 背的軟條 (總數) : 33 - 42; 臀棘: 0; 臀鰭軟條: 18 - 24. Snout short, bluntly V-shaped, not upturned at tip. Barbels short (Ref. 7251). Absence of fontanelle and post dorsal shields. Single row of pre anal shields, 6-11 (Ref. 4639). Dorsal shields 7-13, lateral shields 22-34 (Ref. 4639). Blackish viscera (Ref. 37032). Head and back dark, lower surface white (Ref. 37032). Anal fin origin beneath dorsal fin origin (Ref. 86798).
吻短, 鈍地 V 形的, 尖端不朝上。 觸鬚短.(參考文獻 7251) 沒有囪門與後背甲。 單列的前肛門的盾甲,6-11.(參考文獻 4639) 背甲 7-13 ，側甲 22-34.(參考文獻 4639) 黑色的內臟.(參考文獻 37032) 頭部與背部深色的, 下表面白色.(參考文獻 37032)
Inhabit river mouths, lakes, estuaries, and bays; occasionally enters the open sea. Feeds mostly at night over soft substrates; juveniles feed primarily on benthic crustaceans and insects, adults prey on benthic crustaceans, insects and mollusks (Ref. 93252). Maximum known age is 67 years for females and 30 years for males. Flesh of good quality; eggs are suitable for caviar (Ref. 3192).
棲息於河口，湖，河口與海灣; 偶然地進入開放海域。 最大的已知年齡是 67 年母魚與雄魚 30 年。 好品質的肉; 卵適合做成魚子醬。 (參考文獻 3192)
北美洲: 加拿大的聖約翰河到美國佛羅里達的聖約翰河。 國際間的買賣禁止。 ( 引用 I 自從 1.7.75 以後)
Page, L.M. and B.M. Burr, 1991. A field guide to freshwater fishes of North America north of Mexico. Houghton Mifflin Company, Boston. 432 p. (Ref. 5723)
人類使用
漁業: 低經濟; 游釣魚種: 是的; 水族館: 公眾的水族館
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Estimates based on models
Preferred temperature (Ref.
123201): 7.5 - 25.5, mean 15.6 °C (based on 138 cells).
Phylogenetic diversity index (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).
營養階層 (Ref.
69278): 3.3 ±0.39 se; based on food items.
回復力 (Ref.
120179): 非常低的, 最小族群倍增時間超過14 年 (K=0.04; tm=14-17; tmax=67; Fec=48,000).
Fishing Vulnerability (Ref.
59153): Very high vulnerability (86 of 100).
