1. Parasitology Area, Department of Animal Health, Faculty of Veterinary Sciences, University of Extremadura. Avda. Universidad, s/n, 10071, Cáceres, Spain
2. Department of Animal Health and Welfare, Faculty of Veterinary Medicine, University of Bari, S.P. per Casamassima Km. 3, 70010, Valenzano (Bari), Italy