Main identification features
- head wide, blunt
- pectorals: tips blunt
- back: dark;belly: white
Disc rhomboidal, wider than long; head blunt, raised, projecting well before disc; pectorals bluntly pointed, concave at rear, continue onto rostrum; eyes and spiracles on side of head; tail slender, about as long as disc, no tail fin; 1 large spine at base of tail after small dorsal fin; teeth in flat, pavement-like plates, with 7 series of plates; similar to M. peruvianus but is larger, has blunter pectoral tips and the dorsal fin origin in further forward (1X rather than 2X the length of the dorsal fin base after of the pelvic fin base).
Olive to dark brown to black above, white below.
Size: 180 cm wide.
Habitat: sand, mud and rocky bottoms, and algal beds.
Depth: 1-108 m.
Oregon to the Gulf of California.
Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California); Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos).
Depth Range Max: 108 m.
Depth Range Min: 1 m.
Diet: mobile benthic gastropods/bivalves; mobile benthic worms; mobile benthic crustacea (shrimps/crabs).
Eastern Pacific Range: Northern limit=38; Southern limit=22; Western limit=-122; Eastern limit=-106; Latitudinal range=16; Longitudinal range=16.
Egg Type: Live birth; No pelagic larva; No pelagic phase.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: TEP non-endemic; East Pacific endemic; All species.
Habitat: Mud; Sand & gravel; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Rocks; Macroalgae; Reef associated (reef + edges-water column & soft bottom); Reef (rock &/or coral); Reef and soft bottom.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 180 cm.
Regional Endemism: Continent; Temperate Eastern Pacific, primarily; Tropical Eastern Pacific (TEP) non-endemic; California province, primarily; Continent only; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Near Bottom; Bottom + water column;
|
- Compagno, L.J.V., 1999., Checklist of living elasmobranchs. In Hamlett W.C. (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes., The John Hopkins University Press:471-498.
- De la Cruz , J. , Galvan , F. , Abitia , L. A. , Rodriguez , J. and Gutierrez, F. J., 1994., Lista sistematica de los peces marinos de Bahia Magdalena, Baja California Sur (Mexico). Systematic List of marine fishes from Bahia Magdalena, Baja California Sur (Mexico)., Ciencias Marinas, 20:17-31.
- Eschmeyer , W. N. , Herald , E. S. and Hamman, H., 1983., A field guide to Pacific coast fishes of North America from the Gulf of Alaska to Baja California. Peterson Field Guide Ser. 28., Houghton Mifflin:336pp.
- Findley, L.T., Hendrickx, M.E., Brusca, R.C., van der Heiden, A.M., Hastings, P.A., Torre, J., 2003., Diversidad de la Macrofauna Marina del Golfo de California, Mexico., CD-ROM versión 1.0. Projecto de la Macrofauna del Golfo . Derechos reservados de los autores y Conservación Internacional.
- Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.
- Galván-Magaña, F., Gutiérrez-Sánchez, F., Abitia-Cárdenas, L.A., Rodríguez-Romero, J., 2000., The distribution and affinities of the shore fishes of the Baja California Sur lagoons. In Aquatic Ecosystems of Mexico: Status and Scope. Eds. M. Manuwar, S.G. Lawrence, I.F. Manuwar & D.F. Malley. Ecovision World Monograph Series., Backhuys Publishers:383-398.
- Garman, S., 1913., The Plagiostomia (Sharks, Skates and Rays)., Mem. Mus. Comp. Zool., 36:1-515.
- Gill, T.N., 1865., Note on the family of myliobatoids, and on a new species of Aetobatis., Ann. Lyc. Nat. Hist. N. Y., 8:135-138.
- Jordan , D.S. and Evermann, B.W., 1896., The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Part I., Bull. U.S. Nat. Mus., 47:1-1240.
- Jordan , D.S. and Gilbert, C.H., 1880., Notes on a collection of fishes from San Diego, California., Proc. U.S. Nat. Mus., 3:23-34.
- Love, M.S., Mecklenburg, C.W., Mecklenburg, T.A., Thorsteinson, L.K., 2005., es of the West Coast and Alaska: a checklist of North Pacific and Artic Ocena species from Baja California to the Alaska-Yukon border., U.S. Department of the Interior, U.S. Geological Survey, Biological Resources Division, 288pp.
- Minckley, W.L., 2002., Fishes of the lowermost colorado river, its delta, and estuary: a commentary on biotic change. En: Lozano-Vilano, M. L. (Ed.). Libro Jubilar en Honor al Dr. Salvador Contreras Balderas., Universidad Autonoma de Nuevo León:63-78.
- Osburn , R. C. and Nichols, J. T., 1916., Shore Fishes Collected by the 'Albatross' Expedition in Lower California with Descriptions of New Species., Bull. Amer. Mus. Nat. Hist., 35:139-181.
- Pondella II, D.J., Gintert, B.E., Cobb, J.R., Allen, L.G., 2005., Biogeography of the nearshore rocky-reef fishes at the southern and Baja California islands., Journal of Biogeography, 32:187-201.
- Ramírez Rodríguez, M., 1997., Producción pesquera en la Bahía de La Paz, B.C.S.. En Urbán Ramírez, J. y M. Ramírez Rodríguez (Eds.). La Bahía de La Paz investigación y conservación., Universidad Autónoma de Baja California Sur:273-282.
|
