Origins of the Greenland shark (Somniosus microcephalus): Impacts of ice‐olation and introgression

  title={Origins of the Greenland shark (Somniosus microcephalus): Impacts of ice‐olation and introgression},
  author={Ryan P Walter and Denis Roy and Nigel E Hussey and Bj{\"o}rn Stelbrink and Kit Maureen Kovacs and Christian Lydersen and Bailey C. McMeans and J{\"o}rundur Svavarsson and Steven T Kessel and Sebasti{\'a}n Biton Porsmoguer and Sharon Wildes and Cindy A. Tribuzio and Steven E. Campana and Stephen D. Petersen and Randall Grubbs and Daniel D. Heath and Kevin J. Hedges and Aaron Thomas Fisk},
  booktitle={Ecology and evolution},
Herein, we use genetic data from 277 sleeper sharks to perform coalescent-based modeling to test the hypothesis of early Quaternary emergence of the Greenland shark (Somniosus microcephalus) from ancestral sleeper sharks in the Canadian Arctic-Subarctic region. Our results show that morphologically cryptic somniosids S. microcephalus and Somniosus pacificus can be genetically distinguished using combined mitochondrial and nuclear DNA markers. Our data confirm the presence of genetically admixed… CONTINUE READING

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