Coccidia of Guinea fowls: Validity of recorded Eimeria spp. (Apicomplexa: Eimeriidae) and first molecular identification of Eimeria grenieri Yvoré & Aycardi, 1967

• Published in: Parasitology international 2024-12, Vol.103, p.102937, Article 102937
• Main Authors: Ortúzar-Ferreira, Carlos Nei, Dorna-Santos, Leandro, Oliveira, Mariana S. de, Lima, Viviane M. de, Duszynski, Donald W., Berto, Bruno P.
• Format: Article
• Language: English
• Subjects: Brazil; Coccidia; Eimeria gorakhpuri; Eimeria grenieri; Eimeria numidae; Helmeted Guinea fowl; Morphology; Numida meleagris; Phylogeny; Sequencing; Sporulated oocysts; Taxonomy
• ISSN: 1383-5769; 1873-0329; 1873-0329
• DOI: 10.1016/j.parint.2024.102937

Guinea fowls, Numida meleagris (L., 1758), are galliform birds native to sub-Saharan Africa, but introduced in several countries around the world for domestic breeding and/or animal production. This species is considered more resistant to disease by Eimeria spp. than other domestic galliform birds. Here we review the Eimeria spp. known to infect species of Numididae and provide the first molecular identification of an Eimeria sp. from Guinea fowls. There are currently 3 named eimerians from Guinea fowls; Eimeria numidae Pellerdy, 1962; Eimeria grenieri Yvoré and Aycardi, 1967; and Eimeria gorakhpuri Bhatia & Pande, 1967. We reviewed each of these species descriptions and documented their taxonomic shortcomings. From that, we suggest that E. gorakhpuri is a junior synonym of E. numidae. In conclusion, we have morphologically redescribed in detail E. grenieri from N. meleagris from Rio de Janeiro and provided molecular supplementation through sequencing of three non-overlapping loci in cox1 and cox3 genes and fragments of small and large subunit mitochondrial rDNA.