Originally Posted by
gavin
All this casual chat of folk believing that climate is a constraint to SHB spread worries me. We really don't know what limits SHB and how this may operate in new areas. Is it a need for summer heat or is it a need for a lack of winter cold? Or is it something else?
What we know from experimental work is that they *can* complete the pupal phase at temperatures which occur through much of the year in parts of Scotland and all year in parts of S England. We also know that they prefer damp soil rather than dry soil.
These are the reasons for wanting to keep it out. It might be true that it will not thrive anywhere in the UK, but we don't know that is true.
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