The impact of habitat and migration on plumage colour in Cardinalidae

Biological Journal of the Linnean Society, Journal Year: 2023, Volume and Issue: 141(2), P. 264 - 277

Published: June 17, 2023

Abstract Plumage coloration arises from a complex concert of selection pressures incorporating regional ecology, the light environment and genomic architecture. Here, we analyse evolution in cardinals grosbeaks (Cardinalidae) avian visual perspective test relative roles life-history traits shaping plumage evolution. We incorporate data three separate sources to correlated ecological habitat classifications for males females. Our results show that females evolve under different axes correlations with differ between sexes. find preferences semi-open, fragmented are male, but not female, complexity. also migration, long heralded as driver sexual dichromatism, is reduced complexity females, significantly male coloration. Finally, our showcase user-defined categorical metrics can influence or, potentially, even mislead interpretation results, highlighting need measure quantitatively rather than subjective, metrics.

Language: Английский

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No evidence for an adaptive role of early molt into breeding plumage in a female fairy wren

Behavioral Ecology, Journal Year: 2019, Volume and Issue: 31(2), P. 411 - 420

Published: Nov. 24, 2019

Abstract The evolution of ornaments as sexually selected signals is well understood in males, but female ornamentation remains understudied. Fairy wrens offer an excellent model system, given their complex social structure and mating systems, the diversity ornamentation. We investigated whether early molt into ornamental breeding plumage plays adaptive role females monogamous purple-crowned fairy wren Malurus coronatus, only known to have seasonal plumage. Using 6 years monitoring, we found that timing was similar there no evidence for assortative mating. Like males (previous study), older dominant individuals acquired earlier; however, contrast did not seem be costly since unfavorable environmental conditions or previous reproductive effort delay molt. Early associated with any indicator quality nor it attract additional offspring care by partners. also association between likelihood acquiring a (breeding) position presence proximity same-sex rivals. Our study results, which are findings conspecific suggest directional selection might relaxed this species, other genetically polygamous predicts extrapair success males. However, finding status dependent raises possibility attributes ornament may fulfill function females.

Language: Английский

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Correlated evolution of parental care with dichromatism, colors, and patterns in anurans

Evolution, Journal Year: 2022, Volume and Issue: 76(4), P. 737 - 748

Published: March 4, 2022

Parental care is widespread and has fitness benefits. But caregiving parents incur costs including higher predation, this may lead to selection for body colors or patterns that help mitigate the risks of caring. The evolution coloration, sexual dichromatism, however, can be driven by other factors, such as selection. Therefore, examining associations between parental color provide key insights into evolutionary pressures care. Our comparative analysis 988 anuran species reveals dichromatic are less likely care, irrespective sex, more breed in aquatic habitats. We then examined whether dorsal enhance crypticity function aposematic signals associated with modality (transport stationary). Only males have Stripes, but none (Green-Brown, Red, Yellow, Blue-Black) (Plain, Bands, Spots, Mottled-Patches) were females Overall, breeding ecology, associated, behavior does not appear influence myriad characteristic anurans globally.

Language: Английский

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Differences in plumage coloration between ventral and dorsal regions on Atlantic Forest birds

Ibis, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 13, 2024

Plumage coloration is an important trait for communication signalling and camouflage, enabling birds to provide cues of health condition avoid predators. Such can differ among body regions, with some regions presenting conspicuous coloration, while others are more discreet. also be associated species' life‐history traits, such as diet, habitat nest type. Despite the relevance ecology evolution bird plumage little known regarding relationship between ventral dorsal species, especially in Atlantic Forest, a global hotspot biodiversity. Here we assessed brightness saturation Forest birds, analysed differences colour variability regions. We tested whether sex dichromatism, type, foraging stratum preference related coloration. found that tend darker, achromatic less variable across species when compared Additionally, incubating open nests brighter than from closed nests, sexual dichromatism present darker Our results bring new insights into role ecology, suggesting different evolutionary forces may act

Language: Английский

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Plumage dimorphism and moult patterns of weaverbirds – a review

Ostrich, Journal Year: 2023, Volume and Issue: 94(4), P. 245 - 257

Published: Aug. 2, 2023

AbstractThe colourful plumages of weaverbirds (family Ploceidae, with 118 species recognised) provide a well-known and in part iconic showcase sexual selection, widespread dimorphism (93 species) as well seasonal (62 species). The tremendous diversity both the type degree plumage is poorly known, which calls for better extended understanding highly variable moult patterns this group. Here, we lay foundation by reviewing discussing what known timings Ploceidae. extent post-juvenile weavers: it to be complete 10 species, partial two either or six species. However, likely that there more variation than previously thought. Weavers typically have after breeding, before breeding prenuptial moult, restoring male (and, some female) plumage; usually involves only body feathering, one exception being Seychelles Fody Foudia sechellarum, has moult. We compiled primary data based on proportion feather mass grown, 11 weaver three are newly reported on. Timing discussed relation sex, location annual timing. duration varies widely between within from 46 days (1.5 months) widowbird 215 (7 an arid regions longer durations weavers other regions. Examples overlap presented.Dimorphisme du et schémas de mue chez les tisserins – une synthèseLes colorés des (Ploceidae, espèces) constituent vitrine bien connue et, d’une certaine façon, emblématique la sélection sexuelle, avec un dimorphisme sexuel très répandu ainsi qu’un saisonnier espèces). L’énorme diversité degré est mal connue, ce qui nécessite compréhension plus étendue détaillé variables dans groupe. Dans sens, fait ici première révision littérature l’objectif présenter synthèse sur que l’on sait périodes L’étendue post-juvénile tisserins—elle complète espèces, partielle deux soit espèces. Cependant, il probable qu’il y ait variations qu’on ne le pensait auparavant. Les ont généralement après reproduction avant reproduction, prénuptiale partielle, rétablissant mâle (et, certaines femelle); cette n’implique corps, à l’exception Foudi complète. Nous compilons données primaire basées l’index ‘Proportion Masse Plume Développée’ onze espèces tisserins, dont trois n’ont pas été publiées Le moment discuté en sexe, lieu calendrier annuel. La durée varie considérablement espèce l’autre au sein même espèce, jours mois) Euplecte, zones arides. arides durées prolongées ceux d’autres régions. Quelques exemples chevauchement sont présentés.Keywords: grownmoultPloceidaeseasonal dimorphismsexual dimorphismweaverbirds

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