Gregoire, A and Preault, M and Cezilly, F and Wood, Matthew J and Pradel, R and Faivre, B (2004) Stabilizing natural selection on the early expression of a secondary sexual trait in a passerine bird. Journal of Evolutionary Biology, 17 (5). pp. 1152-1156. ISSN 1152–1156Full text not available from this repository.
Natural selection is a central tenet of evolutionary theory, yet the estimation of the direction and intensity of selection remains problematic. Here, we assess the strength of selection on the early expression of a secondary sexual ornament, bill colour, in male European blackbirds (Turdus merula) using 5 years of capture-mark-recapture (CMR) data. The best-fitting model consisted of a quadratic relationship between survival rate and bill colour, indicating stabilizing natural selection on the early expression of a secondary sexual trait. There was no evidence for sexual selection acting on bill colour in the first year. We suggest that the consideration of early selection and the adoption of refined statistical methods may reveal patterns of selection in the wild that have, as yet, remained undetected.
|Uncontrolled Keywords:||capture-mark-recapture;European blackbird;natural selection;sexual selection;Turdus merula|
|Subjects:||Q Science > QL Zoology|
|Divisions:||Schools and Research Institutes > School of Natural & Social Sciences|
|Research Priority Areas:||Environmental Dynamics & Governance|
|Depositing User:||Matt Wood|
|Date Deposited:||02 Jul 2014 08:50|
|Last Modified:||26 Aug 2016 11:38|