CLONE DIVERSITY OF TETRAPLOID OTIORHYNCHUS SCABER IN NORTHERN EUROPE

Otiorhynchus scaber is a common weevil throughout northern Europe. It is tetraploid and parthenogenetic in this area. A total of 75 electrop horetically definable clones have been identified in northern Europe a nd they all appear to represent a monophyletic lineage. O. scaber is a Rightless inhabitant of the climax community, the spruce forest. Rare faction and similarity index has been used to measure clone diversity and its distribution. Clone diversity is highest in the Southern Borea l and the Middle Boreal zones and decreases towards north and south. T he distribution of single clones appears to be associated with the bio tic zonation of northern Europe. This implies that different clones ar e adapted to different environments.