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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.
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bottenlevande; flodvandrande (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.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm 54.7, range 45 - ? cm
Max length : 108 cm TL hane/ej könsbestämd; (Ref. 86798); common length : 72.0 cm TL hane/ej könsbestämd; (Ref. 12193); publicerad maxvikt: 4.9 kg (Ref. 4699); rapporterad maxålder: 43 år (Ref. 50937)
Kort beskrivning
Bestämningsnycklar | Morfologi | Morfometri
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).
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)
Status på IUCN:s rödlista (Ref. 130435: Version 2025-2 (Global))
Hot mot människor
Harmless
Mänskliga användningsområden
Fiskeri: kommersiell; sportfisk: ja; Akvarium: Offentliga akvarier
Verktyg
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Uppskattningar baserade på modeller
Index för fylogenetisk mångfald (Ref. 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). |
Trofisk nivå (Ref. 69278) |
3.5 ±0.3 se; based on diet studies. |
Resiliens (Ref. 120179) |
Mycket låg, lägsta populationsfördubblingstid mer än 14 år (tm=5; tmax=43; K=0.13). |
Sårbarhet i fisket (Ref. 59153) |
High to very high vulnerability (69 of 100). 🛈 |
Priskategori (Ref. 80766) |
Unknown.
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