FN Archimer Export Format
PT J
TI Stabilising selection on immune response in male black grouse Lyrurus tetrix
BT 
AF SOULSBURY, Carl D.
   SIITARI, Heli
   LEBIGRE, Christophe
AS 1:1;2:2;3:3;
FF 1:;2:;3:;
C1 Univ Lincoln, Sch Life Sci, Lincoln, England.
   Univ Jyvaskyla, Dept Biol & Environm Sci, POB 35, Jyvaskyla 40014, Finland.
   IFREMER, Ctr Brest, F-29820 Plouzane, France.
C2 UNIV LINCOLN, UK
   UNIV JYVASKYLA, FINLAND
   IFREMER, Ctr Brest, F-29820 Plouzane, France.
IF 2.915
TC 6
UR https://archimer.ifremer.fr/doc/00426/53761/54653.pdf
LA English
DT Article
DE ;Ecological immunology;ELISA;Immunocompetance;Life history theory;Stabilising selection
AB Illnesses caused by a variety of micro- and macro- organisms can negatively affect individuals' fitness, leading to the expectation that immunity is under positive selection. However, immune responses are costly and individuals must trade-off their immune response with other fitness components (e.g. survival or reproductive success) meaning that individuals with intermediate response may have the greatest overall fitness. Such a process might be particularly acute in species with strong sexual selection because the condition-dependence of male secondary sexual-traits might lead to striking phenotypic differences amongst males of different immune response levels. We tested whether there is selection on immune response by survival and reproduction in yearling and adult male black grouse (Lyrurus tetrix) following an immune challenge with a novel antigen and tested the hypothesis that sexual signals and body mass are honest signals of the immune response. We show that yearling males with highest immune response to these challenges had higher survival, but the reverse was true for adults. Adults with higher responses had highest mass loss and adult males with intermediate immune response had highest mating success. Tail length was related to baseline response in adults and more weakly in yearlings. Our findings reveal the complex fitness consequences of mounting an immune response across age classes. Such major differences in the direction and magnitude of selection in multiple fitness components is an alternative route underpinning the stabilising selection of immune responses with an intermediate immune response being optimal. 
PY 2018
PD FEB
SO Oecologia
SN 0029-8549
PU Springer
VL 186
IS 2
UT 000424210100010
BP 405
EP 414
DI 10.1007/s00442-017-4014-1
ID 53761
ER

EF