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understanding benthic, pelagic and air-borne ecosystem interactions in shallow coastal seas

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Partitioning the environmental drivers of immunocompetence
Jackson, J.A.; Friberg, I.M.; Hablützel, P.I.; Masud, N.; Stewart, A.; Synnott, R.; Cable, J. (2020). Partitioning the environmental drivers of immunocompetence. Sci. Total Environ. 747: 141152. https://dx.doi.org/10.1016/j.scitotenv.2020.141152
In: Science of the Total Environment. Elsevier: Amsterdam. ISSN 0048-9697; e-ISSN 1879-1026
Peer reviewed article  

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Author keywords
    Immunity; Ecoimmunology; Environment; Climate change; Parasitism; Disease

Auteurs  Top 
  • Jackson, J.A.
  • Friberg, I.M.
  • Hablützel, P.I.
  • Masud, N.
  • Stewart, A.
  • Synnott, R.
  • Cable, J.

Abstract
    By determining susceptibility to disease, environment-driven variation in immune responses can affect the health, productivity and fitness of vertebrates. Yet how the different components of the total environment control this immune variation is remarkably poorly understood. Here, through combining field observation, experimentation and modelling, we are able to quantitatively partition the key environmental drivers of constitutive immune allocation in a model wild vertebrate (three-spined stickleback, Gasterosteus aculeatus). We demonstrate that, in natural populations, thermal conditions and diet alone are sufficient (and necessary) to explain a dominant (seasonal) axis of variation in immune allocation. This dominant axis contributes to both infection resistance and tolerance and, in turn, to the vital rates of infectious agents and the progression of the disease they cause. Our results illuminate the environmental regulation of vertebrate immunity (given the evolutionary conservation of the molecular pathways involved) and they identify mechanisms through which immunocompetence and host-parasite dynamics might be impacted by changing environments. In particular, we predict a dominant sensitivity of immunocompetence and immunocompetence-driven host-pathogen dynamics to host diet shifts.

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Westbanks is a project Supported by the Belgian Science Policy (BELSPO): SSD Science for sustainable Development
General coordination: Magda Vincx & Jan Vanaverbeke
Hosted by the Flanders Marine Institute VLIZ