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

Odobenus rosmarus (Walrus)

Synonyms:
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 rosmarus (Atlantic walrus)

Endangered Species

Status: Vulnerable
View IUCN Record: Odobenus rosmarus

EDGE Analysis

Uniqueness Scale: Similiar (0) 
13
 Unique (100)
Uniqueness & Vulnerability Scale: Not determined do to incomplete vulnerability data.
ED Score: 25.84
Learn more at EDGE of Existence programme

Attributes

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
Maximum Longevity [4]  40 years
Migration [3]  Intraoceanic
Snout to Vent Length [4]  10.562 feet (322 cm)
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)[5]
Orcinus orca (Killer Whale)[10]
Ursus maritimus (Polar Bear)[11]

Providers

Parasite of 
Trichinella spiralis (pork worm)[5]

Consumers

Range Map

External References

NatureServe Explorer

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
♦ 4Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
♦ 5Jorrit 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.
♦ 6Delphinapterus leucas, Barbara E. Stewart and Robert E. A. Stewart, MAMMALIAN SPECIES No. 336, pp. 1-8 (1989)
♦ 7Monodon monoceros, Randall R. Reeves and Sharon Tracey, Mammalian Species No. 127, pp. 1-7 (1980)
♦ 8CephBase - Cephalopod (Octopus, Squid, Cuttlefish and Nautilus) Database
♦ 9Feeding 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
♦ 10Food 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
♦ 11Diet composition of polar bears in Svalbard and the western Barents Sea, Andrew E. Derocher, Øystein Wiig, Magnus Andersen, Polar Biol (2002) 25: 448–452
♦ 12Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
♦ 13Nunn, 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.
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via GBIF.org on 2023-06-13; License: CC BY 4.0