Megafaunal Extinctions and the Disappearance of a Specialized Wolf Ecomorph

@article{Leonard2007MegafaunalEA,
  title={Megafaunal Extinctions and the Disappearance of a Specialized Wolf Ecomorph},
  author={Jennifer A. Leonard and Carles Vil{\`a} and Kena Fox-Dobbs and Paul L. Koch and Robert K. Wayne and Blaire van Valkenburgh},
  journal={Current Biology},
  year={2007},
  volume={17},
  pages={1146-1150}
}
The gray wolf (Canis lupus) is one of the few large predators to survive the Late Pleistocene megafaunal extinctions [1]. Nevertheless, wolves disappeared from northern North America in the Late Pleistocene, suggesting they were affected by factors that eliminated other species. Using skeletal material collected from Pleistocene permafrost deposits of eastern Beringia, we present a comprehensive analysis of an extinct vertebrate by exploring genetic (mtDNA), morphologic, and isotopic (delta(13… Expand
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    References

    SHOWING 1-10 OF 37 REFERENCES
    Population genetics of ice age brown bears.
    The Pleistocene was a dynamic period for Holarctic mammal species, complicated by episodes of glaciation, local extinctions, and intercontinental migration. The genetic consequences of these eventsExpand
    Dynamics of Pleistocene Population Extinctions in Beringian Brown Bears
    TLDR
    Researchers studied genetic change in the brown bear, Ursus arctos, in eastern Beringia over the past 60,000 years using DNA preserved in permafrost remains to investigate the evolutionary impact of climatic and environmental changes associated with the last glaciation. Expand
    FAST TRACK: Legacy lost: genetic variability and population size of extirpated US grey wolves (Canis lupus)
    TLDR
    Analysis of mitochondrial DNA sequences of 34 pre‐extermination wolves found that they had more than twice the diversity of their modern conspecifics, implying a historic population size of several hundred thousand wolves in the western cUS and Mexico, and a much wider geographical mandate for the reintroduction of Mexican wolves than currently planned. Expand
    Mitochondrial DNA phylogeography and population history of the grey wolf Canis lupus
    TLDR
    The results suggest that fluctuating population sizes during the late Pleistocene have left a genetic signature on levels of variation in both species, and a statistical parsimony analysis indicates local genetic structure that suggests recent restricted gene flow. Expand
    Quaternary records of the dire wolf, Canis dirus, in North and South America
    The dire wolf was an important large, late Pleistocene predator in North and South America, well adapted to preying on megaherbivores. Geographically widespread, Canis dirus is reported from 136Expand
    New carbon dates link climatic change with human colonization and Pleistocene extinctions
    TLDR
    Many new radiocarbon dates are added to those already published on late Pleistocene fossils from Alaska and the Yukon Territory and show previously unrecognized patterns, indicating a radical ecological sorting during a uniquely forage-rich transitional period, affecting all large mammals, including humans. Expand
    Ancient wolf lineages in India
    TLDR
    The Indian subcontinent has three divergent, ancient and apparently parapatric mtDNA lineages within the morphologically delineated wolf, finding no evidence that these two taxa played a part in the domestication of canids. Expand
    Rise and Fall of the Beringian Steppe Bison
    TLDR
    A detailed genetic history of bison throughout the late Pleistocene and Holocene epochs is reconstructed using ancient DNA and Bayesian techniques to reconstruct a large diverse population living throughout Beringia until around 37,000 years before the present, when the population's genetic diversity began to decline dramatically. Expand
    Tough Times at La Brea: Tooth Breakage in Large Carnivores of the Late Pleistocene
    TLDR
    Comparisons of tooth fracture frequencies from modern and Pleistocene carnivores imply that predator-prey dynamics and interspecific interactions must have been substantially different 36,000 to 10,000 years ago. Expand
    Carnivore Behavior, Ecology, and Evolution
    TLDR
    This book discusses the role of Odor in the Social Lives of Carnivores, the Phylogeny of the Recent Carnivora, and the Physiology and Evolution of Delayed Implantation in Carnivors. Expand
    ...
    1
    2
    3
    4
    ...