In a recent review paper for Science, a team of researchers argue that the combination of modern stresses facing bees seem to be much deadlier than is often appreciated. Pesticides alone might not be enough to wipe out bee colonies, but studies have shown that they can make bees more susceptible to invasive parasites. Poor nutrition can lead bumblebees to succumb to disease. Fungicides and pesticides are more potent together than in isolation.
Now, it might seem totally obvious that chronic exposure to lots of different stresses would be bad for the bees. But surprisingly, the authors note, both scientific research and regulatory reviews don’t always capture these synergies well.
Read full, original article: A new theory for why the bees are vanishing