Size differences among canaries, goldfinches and allies may explain correlated evolution of song and colour

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2029)

Published: Aug. 1, 2024

Sexual signals such as colour ornamentation and birdsong evolve independently of each other in some clades, others they positively or negatively correlated. We rarely know why correlated evolution does not occur. Here, we show between plumage song motor performance among canaries, goldfinches allies, associated with species differences body size. When controlling for size, the pattern disappeared. Syllable diversity was strongly did a manner colour. argue that mediated by large size limiting performance, likely due to constraints on speed moving heavier bills, larger having less saturated colour, possibly life-history traits birds (e.g. longevity, stable pairs) contributing weaker sexual selection. Results are consistent hypothesis is influenced how, clade, selective pressures affecting type signal happen be co-distributed across species. Such contingency helps explain clade-specific patterns signals.

Language: Английский

Correlated evolution between colour conspicuousness and drum speed in woodpeckers

Royal Society Open Science, Journal Year: 2022, Volume and Issue: 9(10)

Published: Oct. 1, 2022

Sexual selection drives the evolution of many spectacular animal displays that we see in nature. Yet, how combines and elaborates different signal traits remains unclear. Here, investigate this issue by testing for correlated between head plumage colour drumming behaviour woodpeckers. These signals function context mate choice male–male competition, they may appear to a receiver as single multimodal display. We test such correlations males 132 species using phylogenetic linear models, while considering effect habitat. find chromatic contrast is positively with speed drum, supporting idea evolving more conspicuous on their also evolve faster drum displays. By contrast, do not evidence diversity, size head's red patch, or extent achromatic contrast. Drum length was any coloration metrics. Lastly, no habitat acts strong selective force driving elaboration. Coevolution modalities therefore complex, probably depends display components question.

Language: Английский

Woodpeckers are more cryptic against tree bark on which they forage

Animal Behaviour, Journal Year: 2024, Volume and Issue: 215, P. 191 - 209

Published: July 12, 2024

Language: Английский