Institutional
recidivism
The government have concluded that invasive species threaten
our native biodiversity and that something should be done about them. No,
not beavers who are fast becoming the pin up poster animals of the wilding
mania, but grey squirrels.
To be fair to the current minister Lord (Zac) Goldsmith it
has only taken the combined brilliance of the 30 plus governments since the
grey squirrel arrived in Britain since the late 1800’s for the penny to
finally drop: inserting an adaptable, resourceful creature with few
predators into any otherwise settled landscape is nearly always an
ecological timebomb. Muntjac, American signal crayfish, coypu and mink all
immediately come to mind before you even get into plants and insects.
The plan is for grey squirrels to be fed oral contraceptive;
a trial with feeding stations indicated that 90% of squirrels would ‘take
the bait’ but none are yet to be fed the contraceptive. I’m not sure it is
a slam dunk that the trial will translate into a full-blown policy. Reading
around the topic some worry about the contraceptives working into the wider
food chain and to quote one ecologist, “the physiological and psychological
effects an inability to breed will have on the welfare of grey squirrels.”
Yes, really …..
There was a trial 4-5 years ago in the Midlands to sterilise
American signal crayfish. It transpires that male signals are true alpha
males, killing any juvenile males they come across whilst impregnating all
and any females. The trial was slightly different to that of the squirrels
with trapped signal males being sterilised before being returned to their
home water to continue purposefully killing but pointlessly procreating. I
haven’t heard of this being rolled out. Has anyone?
I know I bang on about beavers too much but the
institutional recidivism when it comes to managing our countryside makes me
despair. Our ability to repeat the same mistakes again and again is a
lunacy of which I do not know the cure.
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