Control of Poultry Mites ( Dermanyssus )

Recent surveys and sample collection have conWrmed the endemicity of Dermanyssus gallinae in poultry farming worldwide. The reduction in number and eYcacy of many acaricide products has accentuated the prevalence rates of this poultry ectoparasite observed more often in non intensive systems such as free-range, barns or backyards and more often in laying hens than in broiler birds. The lack of knowledge from producers and the utilisation of inadequate, ineVective or illegal chemicals in many countries have been responsible for the increase in infestation rates due to the spread of acaricide resistance. The costs for control methods and treatment are showing the tremendous economic impact of this ectoparasite on poultry meat and egg industries. This paper reviews the prevalence O. Sparagano School of Agriculture, Food and Rural Development, Newcastle University, Agriculture Building, Newcastle Upon Tyne NE1 7RU, UK A. PavliTeviT AVES Inc, Palic, Serbia T. Murano Chiba Prefectural Livestock Research Center, He 16-1 Yachimata, Yachimata, Chiba 289-1113, Japan A. Camarda Dipartimento di Sanità Pubblica e Zootecnia, Facoltà di Medicina Veterinaria, Università degli Studi di Bari, 70100 Valenzano, Italy H. Sahibi Département de Pathologie et de Santé Publique Vétérinaires, Unité de Parasitologie et Maladies Parasitaires, Institut Agronomique et Vétérinaire Hassan II, BP 6202, Rabat-Institut, Rabat, Morocco O. Kilpinen Institute of Integrated Pest Management, Danish Pest Infestation Laboratory, University of Aarhus, Skovbrynet 14, 2800 Kgs. Lyngby, Denmark M. Mul · R. van Emous Animal Sciences Group of Wageningen UR, P.O. Box 65, 8200 AB Lelystad, The Netherlands 4 O.A.E. Sparagano (ed.) rates of this poultry pest in diVerent countries and for diVerent farming systems and the production parameters which could be linked to this pest proliferation.