> And that brings us to the actual problem. The honey bee (Apis mellifera) is only one of about 20 thousand different bee species. The non-honey bees are usually referred to as wild bees, and each location has its native species. According to an estimate from researchers at Cornell University in 2006, wild bees contribute to the pollination of 85 percent of crops in agriculture."
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> But last year the magazine Cell published the results of a study with a global estimate for the situation of wild bees. The authors looked at the numbers of bee species that were collected or observed over time using data publicly available at the Global Biodiversity Information Facility. They found that even though the number of records has been increasing, the number of different species in the records has been sharply decreasing in the past decades.
> The decline rates differ between the continents, but the species numbers are dropping steeply everywhere except for Oceania. The researchers say there’s a number of factors in play here, such as the expansion of monocultures, loss of native habitat, pesticides, climate change, and bee trade that also trades around pathogens.
> So the problems that wild bees face are similar to those of honey bees, but they have an additional problem which is… honeybees. Honey bees compete with wild bees for food and habitat and they also pass on viruses. Now, a big honey bee colony can deal with viruses by throwing out the infected bees. But this doesn’t work for wild bees because they don’t live in large colonies. And worse, when honey bees and wild bees fight for food they seem to both lose out.