The Harlequin beetle (Harmonia axyridis) has apparently been declared the UK's fastest invading species (http://www.theguardian.com/environment/2015/may/20/harlequin-ladybirds-declared-uks-fastest-invading-species). It has also been referred to as 'cannibalistic' and a danger to several resident species of ladybird. I admit it's fast but its speed of invasion is only known because it is easy to see and has been monitored by people over the whole country (others may have been faster without our noting them). There is nothing unusual about insects being cannibalistic and eating another species (if we are talking ladybirds) doesn't count.
This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Sunday 24 May 2015
Fastest UK Invader?
The Harlequin beetle (Harmonia axyridis) has apparently been declared the UK's fastest invading species (http://www.theguardian.com/environment/2015/may/20/harlequin-ladybirds-declared-uks-fastest-invading-species). It has also been referred to as 'cannibalistic' and a danger to several resident species of ladybird. I admit it's fast but its speed of invasion is only known because it is easy to see and has been monitored by people over the whole country (others may have been faster without our noting them). There is nothing unusual about insects being cannibalistic and eating another species (if we are talking ladybirds) doesn't count.
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