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Acipenseriformes (Sturgeons and paddlefishes) >
Acipenseridae (Sturgeons) > Scaphirhynchinae
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.
Environment: milieu / climate zone / depth range / distribution range
Écologie
; eau douce démersal; potamodrome (Ref. 51243). 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.
Length at first maturity / Taille / Poids / Âge
Maturity: Lm 54.7, range 45 - ? cm
Max length : 108 cm TL mâle / non sexé; (Ref. 86798); common length : 72.0 cm TL mâle / non sexé; (Ref. 12193); poids max. publié: 4.9 kg (Ref. 4699); âge max. reporté: 43 années (Ref. 50937)
Description synthétique
Clés d'identification | Morphologie | Morphométrie
Bases of outer barbels in line with or ahead of inner barbels (Ref. 86798).
Occurs in the bottom of main channels and embayments of large turbid rivers; frequently in flowing water over sand and mixed with gravel and mud. Feeds 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)
Statut dans la liste rouge de l'IUCN (Ref. 130435: Version 2024-1)
Menace pour l'homme
Harmless
Utilisations par l'homme
Pêcheries: commercial; pêche sportive: oui; Aquarium: Aquariums publics
Outils
Articles particuliers
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Sources Internet
Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref.
93245).
Niveau trophique (Ref.
69278): 3.5 ±0.3 se; based on diet studies.
Résilience (Ref.
120179): Très faible, temps minimum de doublement de population supérieur à 14 ans (tm=5; tmax=43; K=0.13).
Fishing Vulnerability (Ref.
59153): High to very high vulnerability (69 of 100).
