Dr Lise Roy
Université Paul-Valéry Montpellier III

Working group 3: Genetic structure in a changing world

This WG will encourage advances in the characterization of the genetic structure of the Poultry Red Mite in the current context of a world dominated by recurrent long-distance exchanges and massive use of a small number of acaricide substances.

In particular, it will urge molecular studies aiming at characterizing mite populations from different regions and/or different poultry industries, in order to assess dispersal routes. It will also favour molecular studies dedicated to detect pathogenic microorganisms from PRM individuals in order to allow improvement of our understanding of the role of PRM in the epidemiology of some diseases. Lastly, it will give support to functional genomic studies designed to improve the general knowledge of the PRM biological functions and identify possible new ways of control (e.g; transcriptomics, secretomics), as well as the more specific knowledge on the PRM resistances against veterinary products.

Specific objectives:

  • i. Forge links to facilitate sample exchange and make PRM molecular characterization the most easy.
  • ii. Review progresses on genetic markers developed to explore the PRM genetic structure and associated organisms’ with any goal (e.g. discriminating different PRM lineages, detecting PRM-borne pathogens or resistances against commonly used drugs, or suitable antigens, etc).
  • iii. Review progresses on "resistance breaking" from other sectors (e.g. in ticks, Varroa, mosquitoes)

Cross-link questions:

  • Tracing mite routes to better understand the etiology of infestations (Cross links between WG1, 2, 4 and WG3)
  • Better understanding the mite physiology to improve its control (cross links between WG1 and WG3)
  • Better understanding the farm ecosystem and biotic interactions with PRM (cross links between WG1 and WG3)
  • Operational issues and transfer to stakeholders (cross-links between all WGs)