The aliens on earth: what are invasive species?
Bedbugs between the curtains, in clothes, on the walls, it almost seems like an invasion. But where did they come from? And why there are so many? The insect that we seem to find everywhere is the marbled brown bug, Halyomorpha halys, and it is an invasive alien species. Nothing to do with spaceships and laser beams; these are insects that are not where they should be: they were imported into a new environment which they found favorable for survival and reproduction. Halyomorpha halys. Photo: Pixabay First of all, some clarity on the terms. A native species is a species present in the territory not [...]
