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 ?
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.
Functional morphology of prey capture in the Sturgeon, Scaphirhynchus albus.
Alignment of the Scaphirhynchus and Polyodon mtDNA sequences resulted in a total of 941 characters, including gaps.
Two federally-endangered species were sampled: Topeka shiner Notropis topeka and pallid sturgeon Scaphirhynchus albus.
Several papers have been published on spermatozoa motility and its physiological correlation with composition of seminal plasma in sturgeon and teleost species: Siberian sturgeon, Acipenser baerii (13), (16), Shovelnose sturgeon, Scaphirhynchus platorynchus and Paddlefish, Polydon spathula (17), Lake sturgeon, Acipenser fuvescens (15) and Persian sturgeon, Acipenser persicus (18), Atlantic salmon, Salmo salar (19), Common carp, Cyprinus carpio (20), Bleak, Alburnus alburnus and Rainbow trout, Oncorhynchus mykiss (21), (22), Ctenopharyngodon idella (23), Chinook salmon, Oncorhynchus tshawytscha (24) and Salmo trutta macrostigma (25).
appendix, American brook lamprey 2 1 Acipenseridae Scaphirhynchus platorynchus, shovelnose sturgeon 4 1 4 Polyodontidae Polyodon spathula, paddlefish 26 Lepisosteidae Lepisosteus oculatus, spotted gar L.
Albuquerque Valley Fish taxa Status (a) 1984 1998-2001 Scaphirhynchus platorynchus Native -- -- Lepisosteus osseus Native (b) -- -- Anguilla rostrata Native -- -- Dorosoma cepedianum Native (c) -- 0.
Swimming endurance of juvenile pallid sturgeon, Scaphirhynchus albus.
appendix (DeKay), American NW brook lamprey Petromyzon marinus Linnaeus, sea NW lamprey Order Acipenseriformes (paddlefish, strugeons) Family Acipenseridae (sturgeon) Acipenser fulvescens Rafinesque, W, S lake surgeon Scaphirhynchus platorynchus W, SE (Rafinesque), shovelnose sturgeon Family Polyodontidae (paddlefish) Polyodon spathula (Walbaum), W, SE paddlefish Order Lepisosteiformes (gars) Family Lepisosteidae (gars) Lepisosteus oculatus Winchell, NE, SW spotted gar L.
The critical swimming speeds of sturgeon in this study were similar to those previously reported for juvenile Scaphirhynchus sturgeon.
In the future, USGS intends to mine this database and other information to populate a Scaphirhynchus life history model.
Species Collection Site Petromyzontidae Lampetra appendix, American 49 (adult); 26, 27, brook lamprey 42, 49, 67 (ammocoete) Ichthyomnyzon unicuspis, 1, 4, 11 (adult); 49, silver lamprey 51, 53, 64 (ammocoete) Polyodontidae Polyodon spathula, paddlefish 7 Acipenseridae Scaphirhynchus platorynchus, 1, 3, 4, 7, 8, 10 shovelnose sturgeon Lepisosteidae Lepisosteus oculatus, 62 spotted gar L.