A scientific review of insect numbers suggest that 40% of species are undergoing “dramatic rates of decline” around the world.
Researchers say that some species, such as houseflies and cockroaches, are likely to boom because of warmer conditions and because many of their natural enemies, which breed more slowly, will disappear.
Professor Dave Goulson from University of Sussex said, “it’s quite plausible that we might end up with plagues of small numbers of pest insects, but we will lose all the wonderful ones that we want, like bees, hoverflies, butterflies and dung beetles that do a great job at pollinating and disposing of animal waste.”