Scaphirhynchus

Scaphirhynchus

 

a genus of fishes of the family Acipenseridae. The snout is flattened, and the caudal peduncle is elongated and covered with bony plates. There are two species, found in North America in the basin of the Mississippi River. The shovelnose sturgeon (Scaphirhynchus platorhychus) reaches a length of 90 cm. It deposits its eggs between April and June in streams with rocky bottoms, and it feeds mainly on insect larvae. The shovelnose sturgeon is commercially valuable. The pallid sturgeon (S. albus), which is the least common of the two species, has no commercial value. It reaches a length of 1 m.

References in periodicals archive ?
(2016) to document the presence of the Alabama sturgeon (Scaphirhynchus suttkusi) in the Mobile River basin, Alabama.
sinensis 3-year-old gametogenetic juveniles [33], and Scaphirhynchus platorynchus above 2-year-old individuals with fully developed gonads [38], which could be due to the developmental stage at which the gonads were sampled.
(31.) Sipiorski JT (2000) Neurotransmitter activity in the fore- and hind-brain of the pallid sturgeon (Scaphirhynchus albus) following acute and chronic stress.
These large-river fishes are restricted to the Missouri River and its major tributaries and are prey of the federally endangered pallid sturgeon Scaphirhynchus albus (Gerrity et al., 2006).
RESULTS--We collected 83 total freshwater drum at 5 sample sites along the lower Missouri River, along with 9 other species of fishes: shovelnose sturgeon (Scaphirhynchus platorynchus), pallid sturgeon (Scaphirhynchus albus), shortnose gar (Lepisosteus platostomus), goldeye (Hiodon alosoides), common carp (Cyprinus carpio), channel catfish (Ictalurus punctatus), blue catfish (Ictalurus furcatus), flathead catfish (Pylodictis olivaris), and striped bass (Morone saxatilis).
NPRC claimed that the EIS failed to gather baseline data on species, including pallid sturgeon (Scaphirhynchus albus) and the sage grouse (Centrocercus urophasianus).
The pallid sturgeon (Scaphirhynchus albus), a large-growing fish native to the Mississippi and Missouri rivers, was listed in 1990 as an endangered species due to widespread habitat alteration, over-fishing, hybridization with shovelnose sturgeon, and an apparent loss of natural reproduction.
Functional morphology of prey capture in the Sturgeon, Scaphirhynchus albus.
Recovery of the endangered least tern (Sterna antillarum), piping plover (Charadrius melodus), and pallid sturgeon (Scaphirhynchus albus), and the Missouri River itself, would not be possible without the commitment, partnership, and leadership provided by the Corps.
Wild harvests are prohibited for several of the sturgeon species most endangered with extinction, such as the pallid (Scaphirhynchus albus).
A low level of intersex (two of seven mature males) was also observed in shovelnose sturgeon (Scaphirhynchus albus) captured in the Mississippi River, south of St.
Alignment of the Scaphirhynchus and Polyodon mtDNA sequences resulted in a total of 941 characters, including gaps.