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Behavioural fever boosts the inflammatory response in rainbow trout Oncorhynchus mykiss

Journal article
Authors Albin Gräns
Malin Rosengren
Lars Niklasson
Michael Axelsson
Published in Journal of Fish Biology
Volume 81
Issue 3
Pages 1111-1117
ISSN 1095-8649
Publication year 2012
Published at Department of Biological and Environmental Sciences
Pages 1111-1117
Language en
Keywords fish, IL-1β, immune system, LPS, temperature preference
Subject categories Biological Sciences, Immunology, Animal physiology, Ethology and behavioural ecology


Behavioural fever, manifested as an increased preferred temperature, was shown in rainbow trout Oncorhynchus mykiss following an injection of bacterial lipopolysaccharide. Simulated behavioural fever, through a 2·5° C water temperature rise following bacterial lipopolysaccharide injection, enhanced the expression of the cytokine interleukin-1β, in comparison with an untreated group held at the initial temperature. The present findings show that an important mediator in the immune response can be boosted through behavioural fever in fishes.

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