The 'common vole' in Svalbard identified as Microtus epiroticus by chromosome analysis

• Published in: Polar Research
• Main Authors: Fredga, Karl, Jaarola, Maarit, Anker Ims, Rolf, Steen, Harald, G. Yoccoz, Nigel
• Format: Article in Journal/Newspaper
• Language: English
• Published: Norwegian Polar Institute 1990
• Subjects: Svalbard; Grumantbyen; Common vole; Grumantby*; Polar Research; Microtus epiroticus
• Online Access: https://polarresearch.net/index.php/polar/article/view/2390; https://doi.org/10.3402/polar.v8i2.6818

The chromosomes were studied in six individuals from a population of Microtus from Grumantbyen, Svalbard, and in six Microtur arualis (Pallas 1778) from Lauwersee, Holland. It was shown that the voles from Svalbard did not belong, as earlier supposed, to the species M. arualis (2n = 46) but to M . epiroticus (Ondrias, 1966) (2n = 54). We suggest that the Svalbard voles were introduced by man between 1920 and 1960 together with hay on Russian ships from the vicinity of Leningrad, USSR.