分類 / 名前
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Acipenseriformes (Sturgeons and paddlefishes) >
Acipenseridae (Sturgeons)
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.
環境:環境 / 気候帯 / 深さの範囲 / 分布範囲
生態学
; 新鮮な水 底生の; potamodromous (Ref. 130035). Temperate; 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.
初回成熟時の長さ / サイズ / 重さ / 年齢
成熟: Lm 54.7, range 45 - ? cm
Max length : 108 cm TL オス/雌雄の選別がない; (Ref. 86798); common length : 72.0 cm TL オス/雌雄の選別がない; (Ref. 12193); 最大公表体重: 4.9 kg (Ref. 4699); 最大記録サイズ: 43 年 (Ref. 50937)
簡単な記述
検索表 | 形態学 | 形態計測学
Bases of outer barbels in line with or ahead of inner barbels (Ref. 86798).
Body shape (shape guide): elongated.
Adults occur in the bottom of main channels and embayments of large turbid rivers; frequently in flowing water over sand and mixed with gravel and mud. They feed 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).
ライフサイクルと交尾行動
成熟 | 繁殖 | 放精 | 卵 | 生産力 | 幼生
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)
IUCNのレッドリストの状況は (Ref. 130435: Version 2025-2 (Global))
脆弱 (VU) (A2bce); Date assessed: 14 September 2019
人間の用途
水産業: 商業; ゲームフィッシュ: はい; 水族館・水槽: 公共の水族館
用具
特記事項
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インターネットの情報源
モデルに基づく推定値
系統多様性指数 (参照 82804) |
PD50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00309 (0.00137 - 0.00696), b=3.18 (2.99 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
栄養段階 (参照 69278) |
3.5 ±0.3 se; based on diet studies. |
回復力 (参照 120179) |
非常に低い, 14年以上の倍増期間の最小個体群 (tm=5; tmax=43; K=0.13). |
漁業の脆弱性 (Ref. 59153) |
High to very high vulnerability (69 of 100). 🛈 |
価格帯 (Ref. 80766) |
Unknown.
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