diversity Article Avian Haemosporidian Diversity on Sardinia: A First General Assessment for the Insular Mediterranean Irene Pellegrino 1,* , Luca Ilahiane 1, Giovanni Boano 2 , Marco Cucco 1 , Marco Pavia 3, Heather L. Prestridge 4 and Gary Voelker 4 1 Department of Science and Technological Innovation, University of Piemonte Orientale, 15121 Alessandria, Italy;
[email protected] (L.I.);
[email protected] (M.C.) 2 Museo Civico di Storia Naturale, C.na Vigna, 10022 Carmagnola, Italy;
[email protected] 3 Department of Earth Science, University of Torino, 10125 Torino, Italy;
[email protected] 4 Department of Ecology and Conservation Biology, and Biodiversity Research and Teaching Collections, Texas A&M University, College Station, TX 77843, USA;
[email protected] (H.L.P.);
[email protected] (G.V.) * Correspondence:
[email protected] Abstract: The Western Palearctic is one of the most investigated regions for avian haemosporidian parasites (Haemoproteus, Plasmodium and Leucocytozoon), yet geographic gaps in our regional knowl- edge remain. Here, we report the first haemosporidian screening of the breeding birds from Sardinia (the second-largest Mediterranean Island and a biodiversity hotspot), and the first for the insular Mediterranean in general. We examined the occurrence of haemosporidians by amplifying their mtDNA cytb gene in 217 breeding birds, belonging to 32 species. The total prevalence of infected birds was 55.3%, and of the 116 haplotypes recovered, 84 were novel. Despite the high number of novel lineages, phylogenetic analysis did not highlight Sardinia-specific clades; instead, some Sardinian lineages were more closely related to lineages previously recovered from continental Europe.