Animalia > Chordata > Mammalia > Carnivora > Odobenidae > Odobenus > Odobenus rosmarus
 

Odobenus rosmarus (Walrus)

Language: French

Wikipedia Abstract

The walrus (Odobenus rosmarus) is a large flippered marine mammal with a discontinuous distribution about the North Pole in the Arctic Ocean and subarctic seas of the Northern Hemisphere. The walrus is the only living species in the family Odobenidae and genus Odobenus. This species is subdivided into three subspecies: the Atlantic walrus (O. r. rosmarus) which lives in the Atlantic Ocean, the Pacific walrus (O. r. divergens) which lives in the Pacific Ocean, and O. r. laptevi, which lives in the Laptev Sea of the Arctic Ocean.
View Wikipedia Record: Odobenus rosmarus

Infraspecies

Odobenus rosmarus divergens (Pacific walrus) (Attributes)
Odobenus rosmarus laptevi (Laptev Sea walrus)
Odobenus rosmarus rosmarus (Atlantic walrus)

EDGE Analysis

Uniqueness Scale: Similiar (0) 
13
 Unique (100)
Uniqueness & Vulnerability Scale: Not determined do to incomplete vulnerability data.
ED Score: 25.84

Attributes

Adult Weight [1]  1.116 tons (1,012.50 kg)
Birth Weight [1]  132.278 lbs (60.00 kg)
Diet [2]  Carnivore (Invertebrates), Carnivore (Vertebrates), Piscivore
Diet - Endothermic [2]  10 %
Diet - Fish [2]  10 %
Diet - Invertibrates [2]  80 %
Forages - Marine [2]  100 %
Female Maturity [1]  4 years 9 months
Male Maturity [1]  7 years 2 months
Gestation [1]  11 months 1 day
Litter Size [1]  1
Litters / Year [1]  1
Migration [3]  Intraoceanic
Weaning [1]  2 years

Protected Areas

Prey / Diet

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Erignathus barbatus (Bearded Seal)1
Orcinus orca (Killer Whale)1
Ursus maritimus (Polar Bear)2

Predators

Homo sapiens (man)[4]
Orcinus orca (Killer Whale)[9]
Ursus maritimus (Polar Bear)[10]

Providers

Parasite of 
Trichinella spiralis (pork worm)[4]

Consumers

Institutions (Zoos, etc.)

Range Map

Distribution

Europe & Northern Asia (excluding China); North America; Southern Asia;

External References

Photos

Citations

Attributes / relations provided by
1de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
2Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
3Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at animaldiversity.org
4Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
5Delphinapterus leucas, Barbara E. Stewart and Robert E. A. Stewart, MAMMALIAN SPECIES No. 336, pp. 1-8 (1989)
6Monodon monoceros, Randall R. Reeves and Sharon Tracey, Mammalian Species No. 127, pp. 1-7 (1980)
7CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database
8Feeding of Bearded Seals in the Bering and Chukchi Seas and Trophic Interaction with Pacific Walruses, LLOYD F. LOWRY, KATHRYN J. FROST, AND JOHN J. BURNS, ARCTIC VOL. 33, NO. 2 (JUNE 1980). P. 330-342
9Food Web Relationships of Northern Puget Sound and the Strait of Juan de Fuca : a Synthesis of the Available Knowledge, Charles A. Simenstad, Bruce S. Miller, Carl F. Nyblade, Kathleen Thornburgh, and Lewis J. Bledsoe, EPA-600 7-29-259 September 1979
10Diet composition of polar bears in Svalbard and the western Barents Sea, Andrew E. Derocher, Øystein Wiig, Magnus Andersen, Polar Biol (2002) 25: 448–452
11Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
12Nunn, C. L., and S. Altizer. 2005. The Global Mammal Parasite Database: An Online Resource for Infectious Disease Records in Wild Primates. Evolutionary Anthroplogy 14:1-2.
Protected Areas provided by Biological Inventories of the World's Protected Areas in cooperation between the Information Center for the Environment at the University of California, Davis and numerous collaborators.
Specially protected natural territories of the Russian Federation, Ministry of Natural Resources and Environment of the Russian Federation
GBIF Global Biodiversity Information Facility
Abstract provided by DBpedia licensed under a Creative Commons License