As far as anyone can tell, the cold-water crayfish Faxonius eupunctus makes its home in a 30-mile stretch of the Eleven Point River and nowhere else in the world. Because the animal is being considered for endangered species status, researchers are comparing old and new techniques to get a thorough accounting of its population and distribution.
When a team of scientists analyzed two dozen environmental factors to understand bumblebee population declines and range contractions, they expected to find stressors like changes in land use, geography or insecticides. Instead, they found a shocker: fungicides, commonly thought to have no impact.
Cornell University. (2017, November 14). Tumbling bumblebee populations linked to fungicides. Science Daily November 14, 2017
The study shows that hosts who swat at mosquitoes or perform other defensive behaviors may be abandoned, no matter how sweet.
Study off the coast of Australia.
This study is taking place in the UK but applies here.
Michigan State University Extension February 1, 2018