News Round-Up

Cli­mate change re­casts the in­sect communities of the Arc­tic

Source: helsinki.fi

Through a unique research collaboration, researchers at the University of Helsinki have exposed major changes taking place in the insect communities of the Arctic. Their study reveals how climate change is affecting small but important predators of other insects, i.e. parasitoids.

“Predators at the top of the food web give us a clue to what is happening to their prey species, too. These results increase our understanding of how global warming is changing nature. At the same time, they suggest new inroads for finding answers to big questions in the field of ecology,” says Professor Tomas Roslin from the University of Helsinki and the Swedish University of Agricultural Sciences (SLU).

The researchers’ main discovery was that clear traces of climate change can already be seen in arctic insect communities. MORE

Header image: Parasitoid wasps can be divided into two groups: idiobionts and koinobionts. Cryptus arcticus is an idiobiont attacking host larvae just as they are pupating. Since the host is already immobile at this stage, the parasitoid has to overwinter on site chosen by the host. Credit: Tuomas Kankaanpaa.