TY - JOUR
T1 - MHC-mediated sexual selection on birdsong
T2 - Generic polymorphism, particular alleles and acoustic signals
AU - Garamszegi, László Zsolt
AU - Zagalska-Neubauer, Magdalena
AU - Canal, David
AU - Blázi, György
AU - Laczi, Miklós
AU - Nagy, Gergely
AU - Szöllősi, Eszter
AU - Vaskuti, Éva
AU - Török, János
AU - Zsebők, Sándor
N1 - Publisher Copyright:
© 2018 John Wiley & Sons Ltd.
PY - 2018/6
Y1 - 2018/6
N2 - Several hypotheses predict that the major histocompatibility complex (MHC) drives mating preference in females. Olfactory, colour or morphological traits are often found as reliable signals of the MHC profile, but the role of avian song mediating MHC-based female choice remains largely unexplored. We investigated the relationship between several MHC and acoustic features in the collared flycatcher (Ficedula albicollis), a European passerine with complex songs. We screened a fragment of the class IIB second exon of the MHC molecule, of which individuals harbour 4–15 alleles, while considerable sequence diversity is maintained at the population level. To make statistical inferences from a large number of comparisons, we adopted both null-hypothesis testing and effect size framework in combination with randomization procedures. After controlling for potential confounding factors, neither MHC allelic diversity nor the presence of particular alleles was associated remarkably with the investigated qualitative and quantitative song traits. Furthermore, genetic similarity among males based on MHC sequences was not reflected by the similarity in their song based on syllable content. Overall, these results suggest that the relationship between features of song and the allelic composition and diversity of MHC is not strong in the studied species. However, a biologically motivated analysis revealed that individuals that harbour an MHC allele that impairs survival perform songs with broader frequency range. This finding suggests that certain aspects of the song may bear reliable information concerning the MHC profile of the individuals, which can be used by females to optimize mate choice.
AB - Several hypotheses predict that the major histocompatibility complex (MHC) drives mating preference in females. Olfactory, colour or morphological traits are often found as reliable signals of the MHC profile, but the role of avian song mediating MHC-based female choice remains largely unexplored. We investigated the relationship between several MHC and acoustic features in the collared flycatcher (Ficedula albicollis), a European passerine with complex songs. We screened a fragment of the class IIB second exon of the MHC molecule, of which individuals harbour 4–15 alleles, while considerable sequence diversity is maintained at the population level. To make statistical inferences from a large number of comparisons, we adopted both null-hypothesis testing and effect size framework in combination with randomization procedures. After controlling for potential confounding factors, neither MHC allelic diversity nor the presence of particular alleles was associated remarkably with the investigated qualitative and quantitative song traits. Furthermore, genetic similarity among males based on MHC sequences was not reflected by the similarity in their song based on syllable content. Overall, these results suggest that the relationship between features of song and the allelic composition and diversity of MHC is not strong in the studied species. However, a biologically motivated analysis revealed that individuals that harbour an MHC allele that impairs survival perform songs with broader frequency range. This finding suggests that certain aspects of the song may bear reliable information concerning the MHC profile of the individuals, which can be used by females to optimize mate choice.
KW - Birdsong
KW - Hamilton and Zuk hypothesis
KW - Immunogenetics
KW - Major histocompatibility complex
KW - Parasite-mediated sexual selection
KW - Repertoire size
UR - http://www.scopus.com/inward/record.url?scp=85047666859&partnerID=8YFLogxK
U2 - 10.1111/mec.14703
DO - 10.1111/mec.14703
M3 - Article
C2 - 29693314
AN - SCOPUS:85047666859
SN - 0962-1083
VL - 27
SP - 2620
EP - 2633
JO - Molecular Ecology
JF - Molecular Ecology
IS - 11
ER -