Dr. Murai Éva szerk.: Parasitologia Hungarica 22. (Budapest, 1989)

1. At the large-scale farms and in small-scale producers' stocks mainly the unsatisfactory hygienic conditions and/or obsolete management technological conditions create favourable circumstances for the mass propagation of flies. 2. At present the professional guidance and supervision of fly control is animal production are not regulated. 3. In many places no importance is attached to flies. Therefore, fly control Is not practised at all or it is delayed, unprofessional and inefficient, and the resources available for It are utilized inefficiently. 4. Expert and successful fly control is hindered by insufficient knowledge of the preparations to be used and of the modes of fly control. 5. Fly control is almost exclusively based on chemical destruction of the imagoes. At the same time, the assortment of drugs available for the destruction of flies is Inadequate. 6. Because of the inadequate assortment of muscacidal agents available in Hungary and due to their unprofessional use the risk of development of tolerance and/or resistance to the different active substances is rather high. At present the routine testing of resistance to Insecticides in the field of animal production is unsolved. In order to improve the efficiency of fly control and to diminish the losses caused by flies, the Presidium of the Hungarian Society of Parasitologists feels it necessary to implement the following proposals. 1. The Ministry of Agriculture and Food and the veterinary and food control stations working under its supervision should undertake the professional management and stimulation of fly control and should supervise the implementation of this work. 2. Fly control is the task of large-scale and small-scale animal farms. The expert implementation of this task should be organized and supervised by the farm veterinarian. 3. Registration and licensing of muscacides should be the responsibility of specialized authorities of the Ministry of Agriculture and Food, acting in concert with the Ministry of Social Welfare and Health. Institutions and persons which or who participate in the development of a given insecticide should be excluded from the whole process of licensing. 4. A laboratory should be established in the framework of the animal health service for testing the efficacy of different muscacides and the resistance of flies to Insecticides, for payment. 5. Pesticides (plant-protecting agents) must not be used for fly control (destruction of files). 6. Fly control should be based on a combination of chemical and non-chemical control (e.g. elimination of fly breeding sites by maintaining satisfactory environmental hygiene). Within this, the gradual spread of non-chemical control should be encouraged for environmentprotective and economic reasons. 7. Research into fly control should be coordinated and expanded, and the obtained results should be utilized on a broad scale as soon as possible. Of the important and timely research tasks we would like to emphasize the following: - study of the life history of different fly species; - survey of the prevalence of, and losses caused by, myiasis and oestrosis in Hungary; - study of the public and animal health significance of biting midges and mosquitoes; - research into biological fly control procedures; - search for and development of new, easily applicable procedures and devices (Insecticideimpregnated ear-tags, pour-on formulations, fly traps, etc.);