Farmed bees are mating with native bees – and that could endanger them

Image of managed bee boxes among plants.

(NewScientist) The hybridization can threaten the long-term survival of the native bees, says Ignasi Bartomeus at the Doñana Biological Station in Seville, Spain. “Diversity is the best insurance against [environmental] perturbations because it creates variability from which to adapt to new situations,” he says. “If we homogenize the genetic diversity of some species, we are losing this insurance.”

Genomes of parasitic mites harming the world’s bees sequenced

Image of Varroa mite on honey bee.

(ScienceDaily) Researchers sequenced the genomes of the two Varroa mite species that parasitize the honey bee. They found that each species of mite used its own distinct strategy to survive in its bee host, potentially overwhelming the bees’ defenses. In addition to pointing to how scientists might vanquish these deadly intruders, the findings also shed light on how parasites and hosts evolve in response to one another.

Study shows bee brains process positive and negative experiences differently

Image of honey bee on yellow flower.

(Phys.org) Scientists have known for a long time that vertebrates handle positive and negative events differently, storing and retrieving those memories in their brains differently, as well. To find out if the same is true for invertebrates, they exposed honey bees to positive or negative events and then studied gene expression in a part of their brain known as the mushroom body.