A review of the genetic relationships of Atlantic walrus (Odobenus rosmarus rosmarus) east and west of Greenland

  title={A review of the genetic relationships of Atlantic walrus (Odobenus rosmarus rosmarus) east and west of Greenland},
  author={Erik W. Born and Liselotte Wesley Andersen and Ian Gjertz and {\O}ystein Wiig},
  journal={Polar Biology},
Abstract. Studies of the genetic variation involving allozymes, mitochondrial and nuclear DNA (microsatellites) in walruses (Odobenus rosmarus) were reviewed. In addition, the genetic relationships of a total of 211 Atlantic walruses, O. r. rosmarus, from 5 sampling areas west and east of Greenland were studied using 12 nuclear DNA-microsatellite loci and restriction fragment length polymorphism obtained from the ND1, ND2 and ND3/4 segments of the mitochondrial DNA (mtDNA). At the mtDNA level… 
Walruses (Odobenus rosmarus rosmarus) in the Pechora Sea in the context of contemporary population structure of Northeast Atlantic walruses
The principal finding suggests that PECWalruses show low, but significant genetic distinction from walruses in SVA–FJL and should be managed conservatively, as a separate, small population.
Genetic signals of historic and recent migration between sub-populations of Atlantic walrus Odobenus rosmarus rosmarus west and east of Greenland
The study provides essential information on population sub-structuring that is a prerequisite for management of Atlantic walruses at sustainable levels and suggests the Hudson Strait could be a popu- lation source for walrus for the W Greenland sub-population.
Genetic diversity of historical Atlantic walruses (Odobenus rosmarus rosmarus) from Bjørnøya and Håøya (Tusenøyane), Svalbard, Norway
BackgroundThe population size of Atlantic walruses (Odobenus rosmarus rosmarus) is depleted relative to historical abundance levels. In Svalbard, centuries of over-exploitation brought the walrus
A genetic comparison of West Greenland and Baffin Island (Canada) walruses: Management implications
Until recently Atlantic walruses ( Odobenus rosmarus rosmarus ) have been subject to relatively intense exploitation in West Greenland. Animals in this stock have also been hunted in Nunavut/Canada.
Microsatellite assessment of walrus ( Odobenus rosmarus rosmarus ) stocks in Canada
Walruses in Canada are currently subdivided into seven stocks based on summering areas; Western Jones Sound (WJS), Baffin Bay (BB), Penny Strait-Lancaster Sound (PS-LS), North Foxe Basin (N-FB),
The Laptev Sea walrus Odobenus rosmarus laptevi: an enigma revisited
The mitochondrial sequence data do not support the recognition of three walrus subspecies as reciprocally monophyletic evolutionary units with independent evolutionary histories, and it is recommended that Odobenus r.
Spatial variation and low diversity in the major histocompatibility complex in walrus (Odobenus rosmarus)
Levels of genetic diversity at a gene associated with adaptive immune response [Class II major histocompatibility complex, DQB exon 2] between populations of walrus suggest that walrus may have a reduced capacity to respond to novel immunological challenges associated with shifts in ecological communities and environmental stressors predicted for changing climates.
Investigation of the Stock Structure of Atlantic Walrus ( Odobenus rosmarus rosmarus ) in Canada and Greenland Using Dental Pb Isotopes Derived from Local Geochemical Environments
The chemical composition of animal tissues such as teeth appears to reflect an individual's exposure to its geochemical environment. In this study, the lead (Pb) isotope composition of dental
Aerial survey of Atlantic walruses (Odobenus rosmarus rosmarus) in the Pechora Sea, August 2011
The first estimate of walrus numbers from the Pechora Sea based on an aerial survey of 2,563 km of coastline, using a combination of infrared techniques and digital imagery shows that the population that uses the PeChora Sea during summer has a distributional area that is larger than the survey area.
Spatial genetic structure and asymmetrical gene flow within the Pacific walrus
High levels of genetic diversity in the Pacific walrus, which withstood prolonged decreases in census numbers with little impact on neutral genetic diversity, may reflect resiliency in the face of past environmental challenges.