Sökning: WFRF:(Suchard Marc) > Ancient Hybridizati...
Fältnamn | Indikatorer | Metadata |
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000 | 03570naa a2200517 4500 | |
001 | oai:DiVA.org:uu-158165 | |
003 | SwePub | |
008 | 110901s2011 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-1581652 URI |
024 | 7 | a https://doi.org/10.1016/j.cub.2011.05.0582 DOI |
040 | a (SwePub)uu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Edwards, Ceiridwen J.4 aut |
245 | 1 0 | a Ancient Hybridization and an Irish Origin for the Modern Polar Bear Matriline |
264 | 1 | b Elsevier BV,c 2011 |
338 | a print2 rdacarrier | |
520 | a Background: Polar bears (Ursus maritimus) are among those species most susceptible to the rapidly changing arctic climate, and their survival is of global concern. Despite this, little is known about polar bear species history. Future conservation strategies would significantly benefit from an understanding of basic evolutionary information, such as the timing and conditions of their initial divergence from brown bears (U. arctos) or their response to previous environmental change. Results: We used a spatially explicit phylogeographic model to estimate the dynamics of 242 brown bear and polar bear matrilines sampled throughout the last 120,000 years and across their present and past geographic ranges. Our results show that the present distribution of these matrilines was shaped by a combination of regional stability and rapid, long-distance dispersal from ice-age refugia. In addition, hybridization between polar bears and brown bears may have occurred multiple times throughout the Late Pleistocene. Conclusions: The reconstructed matrilineal history of brown and polar bears has two striking features. First, it is punctuated by dramatic and discrete climate-driven dispersal events. Second, opportunistic mating between these two species as their ranges overlapped has left a strong genetic imprint. In particular, a likely genetic exchange with extinct Irish brown bears forms the origin of the modern polar bear matriline. This suggests that interspecific hybridization not only may be more common than previously considered but may be a mechanism by which species deal with marginal habitats during periods of environmental deterioration. | |
650 | 7 | a NATURVETENSKAPx Biologi0 (SwePub)1062 hsv//swe |
650 | 7 | a NATURAL SCIENCESx Biological Sciences0 (SwePub)1062 hsv//eng |
653 | a Biology | |
653 | a Biologi | |
700 | 1 | a Suchard, Marc A.4 aut |
700 | 1 | a Lemey, Philippe4 aut |
700 | 1 | a Welch, John J.4 aut |
700 | 1 | a Barnes, Ian4 aut |
700 | 1 | a Fulton, Tara L.4 aut |
700 | 1 | a Barnett, Ross4 aut |
700 | 1 | a O'Connell, Tamsin C.4 aut |
700 | 1 | a Coxon, Peter4 aut |
700 | 1 | a Monaghan, Nigel4 aut |
700 | 1 | a Valdiosera, Cristina E.4 aut |
700 | 1 | a Lorenzen, Eline D.4 aut |
700 | 1 | a Willerslev, Eske4 aut |
700 | 1 | a Baryshnikov, Gennady F.4 aut |
700 | 1 | a Rambaut, Andrew4 aut |
700 | 1 | a Thomas, Mark G.u Uppsala universitet,Evolutionsbiologi4 aut0 (Swepub:uu)marth133 |
700 | 1 | a Bradley, Daniel G.4 aut |
700 | 1 | a Shapiro, Beth4 aut |
710 | 2 | a Uppsala universitetb Evolutionsbiologi4 org |
773 | 0 | t Current Biologyd : Elsevier BVg 21:15, s. 1251-1258q 21:15<1251-1258x 0960-9822x 1879-0445 |
856 | 4 | u http://www.cell.com/article/S0960982211006452/pdf |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-158165 |
856 | 4 8 | u https://doi.org/10.1016/j.cub.2011.05.058 |
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