![]() ![]() Our relatively large sample sizes (>60), combined with our meta-analytical integration of 89 effect sizes, make the results regarding the signaling value of our measured components of blue tit song robust. We combined our results with published effect sizes comparing blue tit song with male quality variables using meta-analysis and found that a few song measures are correlates of male quality, though as in our field data, neither male age nor survival appeared related to song. ![]() There were correlations between body size and certain song traits, though neither male age nor male recapture in the subsequent breeding season (apparent local survival) predicted any song variation. We found some evidence that the song variables we measured signaled male quality. None of these variables were related to blue tits' ultraviolet–blue plumage, a demonstrated sexual signal, thus failing to support the redundant signal hypothesis. We detected 6 largely independent measures of variation (i.e., variables) in these songs. We examined the relationship between various measures of condition and dawn songs in male blue tits ( Cyanistes caeruleus). Sexually selected traits are often hypothesized to signal male condition or quality, though empirical evidence is mixed, and a number of alternative models of sexual selection do not require condition dependence. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |