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) > Scaphirhynchinae
Etymology: Scaphirhynchus: Greek, skaphe, -eos = boat + Greek, rhyngchos = snout (Ref. 45335); platorynchus: From the words platy, meaning broad and rynchus, meaning snout (Ref. 10294).
More on author: Rafinesque.
Environment: milieu / climate zone / depth range / distribution range
生態學
; 淡水 居於水底的; 河川洄游 (Ref. 51243). 溫帶; 10°C - 20°C (Ref. 2060); 50°N - 30°N
North America: USA in Mississippi River basin from west Pennsylvania to Montana and south to Louisiana; Mobile Bay drainage, Alabama and Mississippi; upper Rio Grande, New Mexico.
北美洲: 在美國密西西比河流域從西方的賓州到蒙大納而且南至路易斯安那; 摩比灣流域，阿拉巴馬州與密西西比; 大河上游，新墨西哥州。 被認為是瀕臨絕種的.(參考文獻 6866) 國際間的買賣限制。 ( 引用2, 自從 1.4.98 以後)
Length at first maturity / 大小 / 重量 / 年齡
Maturity: Lm 54.7, range 45 - ? cm
Max length : 108 cm TL 雄魚/尚未辨別雌雄; (Ref. 86798); common length : 72.0 cm TL 雄魚/尚未辨別雌雄; (Ref. 12193); 最大體重: 4.9 kg (Ref. 4699); 最大年齡: 43 年 (Ref. 50937)
簡短描述
型態特徵 | 形態測量圖
Bases of outer barbels in line with or ahead of inner barbels (Ref. 86798).
Occurs in the bottom of main channels and embayments of large turbid rivers; frequently in flowing water over sand and mixed with gravel and mud. Feeds primarily on larvae of aquatic insects (especially burrowing mayflies, caddis larvae and midge larvae (Ref. 10294)), worms, and crustaceans (Ref. 50937). Spawning occurs from April to June in large rivers in areas of swift current and coarse substrates (Ref. 10294).
出現於大混濁的河主水道與灣的底部; 時常在流動在沙子上的水方面而且混和著礫石與泥。 主要吃水生昆蟲幼生 (尤其掘洞穴孚游類，石蠶仔魚與蚊仔魚 (參考文獻 10294)) ，蠕蟲與甲殼動物。 (參考文獻 50937) 在湍急的水流與粗糙的底部區域中的大河中產卵從四月到六月。 (參考文獻 10294)
Life cycle and mating behavior
成熟度 | 繁殖 | 產卵場 | 卵 | 孕卵數 | 仔魚
北美洲: 在美國密西西比河流域從西方的賓州到蒙大納而且南至路易斯安那; 摩比灣流域，阿拉巴馬州與密西西比; 大河上游，新墨西哥州。 被認為是瀕臨絕種的.(參考文獻 6866) 國際間的買賣限制。 ( 引用2, 自從 1.4.98 以後)
Robins, C.R., R.M. Bailey, C.E. Bond, J.R. Brooker, E.A. Lachner, R.N. Lea and W.B. Scott, 1991. Common and scientific names of fishes from the United States and Canada. Am. Fish. Soc. Spec. Publ. (20):183 p. (Ref. 3814)
人類使用
游釣魚種: 是的; 水族館: 公眾的水族館
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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=0.00407 (0.00149 - 0.01114), b=3.16 (2.92 - 3.40), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
營養階層 (Ref.
69278): 3.5 ±0.3 se; based on diet studies.
回復力 (Ref.
120179): 非常低的, 最小族群倍增時間超過14 年 (tm=5; tmax=37-43; K=0.13).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (69 of 100).
