A study led by the University of Córdoba's Department of Agronomy, in collaboration with international partners, has identified 12 species of the fungus Colletotrichum, which causes anthracnose in olive trees and other crops. The research, which analyzed 185 isolates from various locations including Spain, Australia, Brazil, and Italy, over a period of 25 years, aims to improve understanding of the pathogen to develop effective control strategies. The study found that the species diversity was highest in Australia and that the dominant species in different regions varied in virulence and sensitivity to fungicides, highlighting the need for site-specific control measures. The findings are published in the journal J. Fungi.