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Behavioural fever is a synergic signal amplifying the innate immune response.


ABSTRACT: Behavioural fever, defined as an acute change in thermal preference driven by pathogen recognition, has been reported in a variety of invertebrates and ectothermic vertebrates. It has been suggested, but so far not confirmed, that such changes in thermal regime favour the immune response and thus promote survival. Here, we show that zebrafish display behavioural fever that acts to promote extensive and highly specific temperature-dependent changes in the brain transcriptome. The observed coupling of the immune response to fever acts at the gene-environment level to promote a robust, highly specific time-dependent anti-viral response that, under viral infection, increases survival. Fish that are not offered a choice of temperatures and that therefore cannot express behavioural fever show decreased survival under viral challenge. This phenomenon provides an underlying explanation for the varied functional responses observed during systemic fever. Given the effects of behavioural fever on survival and the fact that it exists across considerable phylogenetic space, such immunity-environment interactions are likely to be under strong positive selection.

SUBMITTER: Boltana S 

PROVIDER: S-EPMC3730603 | biostudies-literature | 2013 Sep

REPOSITORIES: biostudies-literature

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Behavioural fever is a synergic signal amplifying the innate immune response.

Boltaña Sebastian S   Rey Sonia S   Roher Nerea N   Vargas Reynaldo R   Huerta Mario M   Huntingford Felicity Anne FA   Goetz Frederick William FW   Moore Janice J   Garcia-Valtanen Pablo P   Estepa Amparo A   Mackenzie S S  

Proceedings. Biological sciences 20130907 1766


Behavioural fever, defined as an acute change in thermal preference driven by pathogen recognition, has been reported in a variety of invertebrates and ectothermic vertebrates. It has been suggested, but so far not confirmed, that such changes in thermal regime favour the immune response and thus promote survival. Here, we show that zebrafish display behavioural fever that acts to promote extensive and highly specific temperature-dependent changes in the brain transcriptome. The observed couplin  ...[more]

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