• Acronyme :
  • Référence :
  • Domaine de recherche :
    Sciences du vivant
  • Région :
  • Site :
    Site de Thierry Boulinier
  • Responsable du projet :
    Boulinier Thierry

Circulation of directly transmitted and tick-borne infectious agents in sub-Antarctic and Antarctic colonial vertebrate populations: surveillance, understanding and management implications

Describing and understanding factors affecting the distribution and circulation of infectious agents in animal populations is important for basic and applied reasons. Populations of wild vertebrates living in southern polar areas are increasingly the subject of threats from infectious diseases, which can add to other environmental threats, and it is becoming critical to establish baseline data and sound understanding of the dynamics of host-parasite interactions in these systems. In some instance, such information can have clear potential management implications. Populations of vertebrates breeding in colonies are especially important to study in those respects because they are distributed in very discrete units among and within which the transmission of infectious agents can be affected by various processes and can lead to disease outbreaks than can affect hundreds to thousands of individuals at the same time. In this project, we plan to explore how large scale dispersal processes and more local interactions between hosts and parasites can affect the dynamics of circulation of infectious agents and the occurrence of possible outbreaks. In order to do so, we will combine complementary methodological approaches from different fields, involving notably laboratory analyses of biological samples gathered in the field on identified individuals, the implementation of specific field experiments and the parallel development of a modelling approach. Modern molecular technics as well as tracking devices will be used to address specific questions. The project will also rely on the existing set of long-term IPEV research programs conducted on various key sites. The work will be conducted in tight coordination with the TAAF Nature Reserve. A specific focus will be developed on infectious agents potentially responsible for large outbreaks, such as avian cholera, as well as on seabird ticks and tick-borne disease agents. Field work is planned to be conducted on the three districts of the French sub-Antarctic islands (Amsterdam, Kerguelen and Crozet) in order to address issues at local but also broad spatial scales.