Animals and colour

Global warming favours light coloured insects

Anartia_fatima_Banded_peacock

Global warming is forcing some insects to flee to colder areas, new study reveals. This spells change for ecosystems all over Europe. The researchers examined how 473 species of butterfly and dragonfly were distributed in Europe and compared it with data from 20 years ago.This revealed a dramatic change in both species distribution – but most apparent for butterflies.

Dark insects are suffering the most as they absorb heat more easily because the dark colours reflect fewer sunrays and so they are particularly vulnerable to warmer surroundings.
Read the whole story at Science Nordic>>

 

This red butterfly doesn’t mind a warm climate but darker species are struggling with the heat, new study reveals. Dark insects are now migrating north and that spells trouble for local ecosystems.(Photo: Charlesjsharp / Wikimedia Commons)——————————————————————————————————————————————————————————————————

Chameleons communicate through colourChameleon communication

Not only does chameleons change colour depending on the surroundings, it also seems that they use colour to communicate.

Read more here (in Swedish, from Sverigesradio.se) or here (in English).———————————————————————————————————————————————————————————————————

 

Stable structural color patterns displayed on transparent insect wings.

By  Ekaterina Shevtsova, Christer Hansson, Daniel H. Janzen and Jostein KjClosterocerus coffeellaeærandsen.

Published in PNAS (Proceedings of the National Academy of Science of the United States of America).

Swedish text can be found here: Rätt bakgrund ger färg.