Somniosus pacificus Bigelow & Schroeder 1944
Description
Somniosus pacificus Bigelow & Schroeder, 1944.
Mud Shark or Pacific Sleeper Shark. To at least 4.3 m (14.1 ft) (Ebert 1987), with unconfirmed, deep-water observations to 7.0 m (23 ft) (Yano et al. 2007). Taiwan to Bering Sea to south-eastern Chukchi Sea (66°20’ N, 165°47’W), and on Russian side of southern Chukchi Sea (Mecklenburg and Steinke 2015) to Pacific Ocean off southern Baja California (Compagno 1984). Possible hybrids of this species and Somniosus microcephalus (Bloch & Schneider, 1801) have been taken somewhat west of Baffin Bay, eastern Canada (Hussey et al. 2015). There is one anecdotal report of a large shark (possibly this species) that was taken near Tuktoyaktuk, northwest Territory, Canada (Reist in Coad and Reist 2018). Reports of S. pacificus as far south as Pisco, Peru (Chirichigno and Vélez 1998) and Bahía de San Antonio, Chile (33°35’S) (Brito 2004a) are not considered valid and probably represent S omniosus antarcticus Whitley, 1939 (Ebert et al. 2009). Depth: surface, intertidal to about 2,205 m (7,232 ft) (min.: Bright 1959; max.: Yeh and Drazen 2009); at the greatest depths in the southern part of the range.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Somniosidae
- Genus
- Somniosus
- Kingdom
- Animalia
- Order
- Squaliformes
- Phylum
- Chordata
- Scientific name authorship
- Bigelow & Schroeder
- Species
- pacificus
- Taxon rank
- species
- Taxonomic concept label
- Somniosus pacificus Bigelow, 1944 sec. Love, Bizzarro, Cornthwaite, Frable & Maslenikov, 2021
References
- Ebert, D. A., Compagno, L. J. V. & Natanson, L. J. (1987) Biological notes on the Pacific Sleeper Shark, Somniosus pacificus (Chondrichthyes, Squalidae). California Fish and Game, 73, 117 - 123.
- Yano, K., Stevens, J. D. & Compagno, L. J. V. (2007) Distribution, reproduction and feeding of the Greenland shark Somniosus (Somniosus) microcephalus, with notes on two other sleeper sharks, Somniosus (Somniosus) pacificus and Somniosus (Somniosus) antarcticus. Journal of Fish Biology, 70, 374 - 390. https: // doi. org / 10.1111 / j. 1095 - 8649.2007.01308. x
- Mecklenburg, C. W. & Steinke, D. (2015) Ichthyofaunal baselines in the Pacific Arctic region and the RUSALCA study area. Oceanography, 28, 158 - 189. https: // doi. org / 10.5670 / oceanog. 2015.64
- Compagno, L. J. V. (1984) FAO Species Catalogue. Volume 4. Sharks of the World. Part 1. Hexanchiformes to Lamniformes. Part 2. Carcharhiniformes. FAO Fisheries Synopsis, No. 125, Volume 4, Parts 1 and 2. FAO, Rome.
- Hussey, N. E., Cosandey-Godin, A., Walter, R. P., Hedges, K. J., VanGerwen-Toyne, M., Barkley, A. N., Kessel, S. T. & Fisk, A. T. (2015) Juvenile Greenland sharks Somniosus microcephalus (Bloch & Schneider, 1801) in the Canadian Arctic. Polar Biology, 38, 493 - 504. https: // doi. org / 10.1007 / s 00300 - 014 - 1610 - y
- Coad, B. W. & Reist, J. D. (Eds.). (2018) Marine Fishes of Arctic Canada. University of Toronto Press, Toronto.
- Chirichigno, F. N. & Velez D, J. (1998) Clave para identificaticar los peces marinos del Peru (segunda edicion, revisada y actualizada). Instituto de Mar de Peru Publicacion Especial.
- Brito, J. L. (2004 a) Hallazgo de Somniosus pacificus Bigelow & Schroeder, 1944 (Squaliformes: Squalidae) en San Antonio, Chile central. Investigaciones Marinas, Valparaiso, 32, 137 - 139.
- Ebert, D. A., Goldman, K. J. & Orlov, A. M. (2009) Somniosus pacificus. The IUCN Red List of Threatened Species, 2009, e. T 161403 A 5416294.
- Bright, D. B. (1959) The occurrence and food of the sleeper shark, Somniosus pacificus, in a central Alaska bay. Copeia, 1959, 76 - 77.
- Yeh, J. & Drazen, C. (2009) Depth zonation and bathymetric trends of deep-sea megafaunal scavengers of the Hawaiian Islands. Deep-Sea Research I, 56, 251 - 266. https: // doi. org / 10.1016 / j. dsr. 2008.08.005