Arthropod communities of laying hen houses: an integrative pilot study toward conservation biocontrol of the Poultry Red Mite Dermanyssus gallinae

Publication date: Available online 8 August 2017 Source:Biological Control Author(s): Lise Roy, Marine El Adouzi, Maria Lourdes Moraza, Geoffrey Chiron, Etienne Villeneuve de Janti, Guénolé Le Peutrec, Olivier Bonato The poultry red mite (PRM), Dermanyssus gallinae (de Geer), is a hematophagous mite of economic importance in the poultry industry. Because PRM lives off-host in habitats potentially shared by many micropredators, biocontrol agents have potential to regulate this pest in poultry buildings. The present pilot study was conducted to obtain a first insight into predatory and parasitic arthropod communities that naturally occur on layer farms in France. Species composition and sensitivity to insecticides were determined to estimate the feasibility of conservation biological control (CBC) of PRM based on a 2-scale concept (regional and local effects). A morpho-molecular approach was used to characterize the taxonomic composition of manure-dwelling arthropod communities, with a focus on mesostigmatid mites, that naturally occur in free-range layer farms. Additionally, the sensitivity of some dominant mite species to a common insecticide (deltamethrin) was measured via bioassays. The putative roles of recorded taxa within ecological guilds and their dispersal habits are discussed based on the results of multivariate and univariate analyses. Local and regional factors had significant effects on both high-level taxonomic arthropod groups and mesostigmatid morpho...
Source: Biological Control - Category: Biology Source Type: research