As they live in the far North, it also means the insects will struggle to move their range to find cooler temperatures as global warming continues.
Dr Hoye said: ‘These butterfly species are under pressure from multiple sides.
‘They live so far North that they cannot move to cooler regions, and they will probably disappear from the southernmost part of their range due to the warming temperatures.
‘In addition, their dispersal capacity is deteriorating, and smaller body size may result in lower fecundity, so these Arctic species could face severe challenges in response to ongoing rapid climate change.’
Read more: http://www.dailymail.co.uk/sciencetech/article-3266547/Global-warming-causing-butterflies-SHRINK-Insect-metabolism-altered-rising-temperatures-putting-risk.html#ixzz3o82APrjh
Follow us: @MailOnline on Twitter | DailyMail on Facebook
Researchers warn that butterflies living in Greenland have been growing smaller in the summer in response to the changing conditions there, meaning can’t fly as far.
Scientists fear that if temperatures continue to rise, many species could struggle to find enough food or to reproduce in their large range.
Biologists measured the wing length of almost 4,500 individual butterflies from two species – the Arctric fritillary and the Northern clouded yellow – collected at the Zackenberg Research Station in Northeast Greenland.
Widespread, drought-sensitive butterfly population extinction could occur as early as 2050,” scientists reported in the journal Nature Climate Change.
Under a business-as-usual scenario of continued greenhouse gas emissions, the odds that certain British Isles species will make it beyond mid-century are “around zero,” the study concludes.