Dermanyssus gallinae are hematophagous mites that pose a serious sanitary problem in the Brazilian laying poultry industry. Its control is typically performed with acaricides, either in powder or liquid form.However, the intensive use of these products has led populations of this species to develop resistance. The aim of the present study is to evaluate the response of D. gallinae eggs and adults to products in aqueous suspension as per the commercial indication and registered at the Ministry of Agriculture, Livestock, and Supply. The study used four different acaricides (Product 1-Cypermethrin, Chlorpyrifos, and Piperonyl Butoxide; Product 2 -Alkyl-benzyl-dimethyl ammonium chloride, glutaraldehyde, deltamethrin; Product 3 -Dichlorvos; Product 4 -Fluralaner) tested in vitro using the contact method. Distilled water was used in the control group. There was difference between eggs and adults in each treatment (p < 0.05, except for control); products had higher efficacy against adult forms. This result might be directly related to frequent D. gallinae reinfestations in poultry houses.
Dermanyssus gallinae are hematophagous mites that pose a serious sanitary problem in the Brazilian laying poultry industry. Its control is typically performed with acaricides, either in powder or liquid form. However, the intensive use of these products has led populations of this species to develop resistance. The aim of the present study is to evaluate the response of D. gallinae eggs and adults to products in aqueous suspension as per the commercial indication and registered at the Ministry of Agriculture, Livestock, and Supply. The study used four different acaricides (Product 1- Cypermethrin, Chlorpyrifos, and Piperonyl Butoxide; Product 2 - Alkyl-benzyl-dimethyl ammonium chloride, glutaraldehyde, deltamethrin; Product 3 – Dichlorvos; Product 4 – Fluralaner) tested in vitro using the contact method. Distilled water was used in the control group. There was difference between eggs and adults in each treatment (p < 0.05, except for control); products had higher efficacy against adult forms. This result might be directly related to frequent D. gallinae reinfestations in poultry houses.
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