Robin's Pin Cushion. Byfield Pocket Park 16 October, 2013 |
A closer view of the same gall. |
Extraordinary though all this is, the story of the gall now becomes far more complex. As it develops more insects, mostly other species of wasp, begin to move in. Some will feed on the plant tissues but others, known as parasitoids, will begin to feed on the original wasp grubs. Eventually an exceedingly complex community develops and so far 14 different species have been identified from these galls, with even more from the galls on the continental mainland. The precise way in which all these "inquiline" species interact is still far from clear and to explain even a little of what is going on would make this a mega-blog. I would commend a fascinating article by Simon Randolph in British Wildlife Vol 24, No 1. Members of the British Plant Gall Society are helping to take research further
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