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Acipenseriformes (Sturgeons and paddlefishes) >
Acipenseridae (Sturgeons) > Scaphirhynchinae
Etymology: Scaphirhynchus: Greek, skaphe, -eos = boat + Greek, rhyngchos = snout (Ref. 45335); albus: From the word albus, meaning white (Ref. 10294).
Environment: milieu / Zona climática / intervalo de profundidade / distribution range
Ecologia
; Água doce demersal; potamódromo (Ref. 51243). 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.
Comprimento de primeira maturação / Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 200 cm TL macho/indeterminado; (Ref. 58490); common length : 81.7 cm TL macho/indeterminado; (Ref. 12193); peso máx. publicado: 130.0 kg (Ref. 52332); idade máx. registrada: 41 anos (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 na Lista Vermelha da UICN (Ref. 130435: Version 2025-1)
Ameaça para os humanos
Harmless
Uso pelos humanos
Ferramentas
Relatórios especiais
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Fontes da internet
Estimates based on models
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00407 (0.00148 - 0.01125), b=3.16 (2.93 - 3.39), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Nível Trófico (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.
Resiliência (Ref.
120179): Baixo, tempo mínimo de duplicação da população 4,5 - 14 anos (tm=5-15; Fec=170,000, tmax=41(based on 1 specimen only)).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (67 of 100).
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