The frequency with which voles were infested by mites was higher in baited blocks.
As previously, voles at site 1 also showed greater hind foot asymmetry.
Lower prevalence in voles might be an indication of the latter.
Lengths of infected female voles ranged from about 112 to 167 mm, and from 106 to 174 mm for males.
Sixty-two voles were found to be positive with alveolar infection (infection rate at 5 %).
At dissection of voles, body weight and length were recorded.
There is a good deal of indirect evidence that some species, notably voles, go through regular cycles of this kind.
Also, the massive infection can disturb the locomotion and escape ability of the voles making them more susceptible to predation by arctic foxes.
