Long term dynamics of Dermanyssus gallinae in relation to mite control measures in aviary systems for layers

摘要: 1. The dynamics of the poultry red mite, Dermanyssus gallinae , in aviary systems for layers were studied an empirical study Sweden between 1994 and 1997. Fluctuations monitored with mite traps at monthly intervals during 3 laying cycles each 2 commercial farms. 2. When mites first detected system it then took about 5 months populations to reach equilibrium levels around which they fluctuated. Within flocks when population growth was unaffected by temporary control activities, demonstrated that significantly denser summer than winter. 3. Current methods had limited effects as only temporarily suppressed. One exception achieved permethrin impregnated plastic strips, reduced level approximately 22%, compared previous flock. 4. distribution patchy horizontally, along system, low burden whereas ...