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Acipenseriformes (Sturgeons and paddlefishes) >
Acipenseridae (Sturgeons)
Etymology: Scaphirhynchus: Greek, skaphe, -eos = boat + Greek, rhyngchos = snout (Ref. 45335); albus: From the word albus, meaning white (Ref. 10294).
Miljö: miljö / Klimatzon / djupintervall / distributionsområde
Ekologi
; sötvatten bottenlevande; flodvandrande (Ref. 130035). Subtropical; 44°N - 30°N
North America: nearly restricted to main channels of Missouri River and lower Mississippi River from Montana to Louisiana in USA.
Längd vid första mognad / Storlek / Vikt / Ålder
Könsmognad: Lm ?  range ? - ? cm
Max length : 200 cm TL hane/ej könsbestämd; (Ref. 58490); common length : 81.7 cm TL hane/ej könsbestämd; (Ref. 12193); publicerad maxvikt: 130.0 kg (Ref. 52332); rapporterad maxålder: 41 år (Ref. 32514)
Absence of scalelike scutes on belly; bases of outer barbels usually behind bases of inner barbels (Ref. 86798).
Body shape (shape guide): elongated.
Adults inhabit large, deep, turbid river channels, usually in strong current over firm sand or gravel (Ref. 10294, 58490). They feed on aquatic insect immatures, particularly caddisfly larvae, and small fish (Ref. 10294). Threatened due to over harvesting and habitat loss (Ref. 58490). No length type given but assumed to be in TL.
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))
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Index för fylogenetisk mångfald (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00363 (0.00170 - 0.00775), b=3.23 (3.05 - 3.41), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.9 ±0.63 se; based on food items.
Generation time: 16.8 ( na - na) years. Estimated as median ln(3)/K based on 2
growth studies.
Resiliens (Ref.
120179): Låg, lägsta populationsfördubblingstid 4,5-14 år (tm=5-15; Fec=170,000, tmax=41(based on 1 specimen only)).
Sårbarhet i fisket (Ref.
59153): High to very high vulnerability (67 of 100).
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