The historically high heat waves that gripped the southwest United States and southern Europe this summer are causing problems for more than just humans. Extreme heat waves affect pollinators and the pathogens that live on them, creating a mutual imbalance that could have major economic and public health consequences.
affect the host-pathogen relationship between two species of solitary bees and a protozoan pathogen . The researchers recently published their findings in the journal, which account for over 90% of the roughly 4,000 species of bees in North America, to be less likely to forage for food.
, but they are essential if we want to understand what is really going on," Porras said."When we looked at the host and pathogen in tandem, we found that infection greatly reduces heat tolerance in the host—a finding we wouldn't have discovered if we had only been studying bees." Solitary bees, often called the workhorses of the pollinator world due to their high foraging capacity, live for roughly a year, but are only active outside their nests for two to four weeks, for example, in early spring. They do a lifetime of pollinating in less than a month, Rajotte explained.
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