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Augustine Arukwe and Arnfinn Langeland Mitochondrial DNA inference between European populations of Tanymastix stagnalis and their glacial survival in Scandinavia Ecology and Evolution 3

Article first published online: 15 SEP 2013 | DOI: 10.1002/ece3.756

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The early observation from 1914 of Tanymastix stagnalis in Norway was not repeated recently, showing a rare and restricted distribution of this species. Based on the new biogegraphical distribution, diurnal temperature variations and biological evidence (inference with the analysis of mitochondria DNA), the immigration history of T. stagnalis was considered on the basis of two opposing immigration theories and in relation to the implications of global climate change. Two immigration theories, namely - the Tabula rasa and Nunatak have prevailed in explaining the present distribution of plants and animals in Scandinavia. It was concluded that the rare occurrence of T. stagnalis in Norway fits into the Nunatak theory and that the species probably survived, at least, the last glaciation on Nunataks or coast refuges located in central Northwestern Norway at Møre mountain and coast area.

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