1. Department of Veterinary Medicine and Animal Production, University of Naples Federico II, Via Delpino 1, 80137 Naples, Italy
2. Department of Physics “Ettore Pancini”, University of Naples Federico II, Via Cintia, Complesso Monte S. Angelo, 80126 Naples, Italy
3. Department of Agriculture, University of Naples Federico II, Via Reggia 100, Portici, 80146 Naples, Italy
4. Plant Protection Service of Campania Region, V. G. Porzio Centro Direzionale is 6, 80143 Naples, Italy