Davey's research focused on the hormonal control of development and physiology in
invertebrates, particularly insects and
nematodes. His work helped unravel how hormones shape insect growth and egg development. He is credited with discovering a new insect hormone and explaining how similar hormonal systems function in
parasitic worms. Much of his research centered on the insect
Rhodnius prolixus and the role of
juvenile hormone in ovarian development. Davey published more than 200 peer-reviewed scientific papers during his career. He served as an editor of the
Canadian Journal of Zoology for 30 years, making significant contributions to the journal and the broader scientific community. He also served on review panels, committees, and editorial boards for national and international scientific organizations. Later in his career, Davey became an outspoken advocate for maintaining high standards in scientific peer review and spoke out against predatory academic publishers. ==Honours and awards==