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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 / climate zone / depth range / distribution range Ökologie

; süßwasser demersal; potamodrom (Ref. 51243). Subtropical; 44°N - 30°N

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North America: nearly restricted to main channels of Missouri River and lower Mississippi River from Montana to Louisiana in USA.

Length at first maturity / Size / Gewicht / Alter

Maturity: L_m ? range ? - ? cm
Max length : 200 cm TL Männchen/unbestimmt; (Ref. 58490); common length : 81.7 cm TL Männchen/unbestimmt; (Ref. 12193); max. veröff. Gewicht: 130.0 kg (Ref. 52332); max. veröff. Alter: 41 Jahre (Ref. 32514)

Kurzbeschreibung Bestimmungsschlüssel | Morphologie | Morphometrie

Absence of scalelike scutes on belly; bases of outer barbels usually behind bases of inner barbels (Ref. 86798).

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.

Life cycle and mating behavior Geschlechtsreife | Fortpflanzung | Ablaichen | Eier | Fecundity | Larven

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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 Rote Liste Status (Ref. 130435: Version 2024-1)

vom Aussterben bedroht (CR) (A2bcde); Date assessed: 08 December 2020

CITES

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Bedrohung für Menschen

Harmless

Nutzung durch Menschen

FAO - Fischereien: Artbeschreibung; Publication: search | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 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).

Trophic level (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.

Widerstandsfähigkeit (Ref. 120179): niedrig, Verdopplung der Population dauert 4,5 - 14 Jahre. (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).

Scaphirhynchus albus (Forbes & Richardson, 1905)