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001-es BibID:	BIBFORM118907
035-os BibID:	(cikkazonosító)12 (WoS)001152827800001 (Scopus)85186206545
Első szerző:	Nagy Jenő (biológus)
Cím:	Plumage and eggshell colouration covary with the level of sex-specifc parental contributions to nest building in birds / Jenő Nagy, Mark E. Hauber, Viktor Löki, Mark C. Mainwaring
Dátum:	2024
ISSN:	0028-1042
Megjegyzések:	Interspecific variation in sex-specific contributions to prenatal parental care, including avian nest building, is becoming increasingly better understood as we amass more information on more species. We examined whether sex-specific nest building contributions covary with the colouration of parents and their eggs in 521 species of Western Palearctic birds. Having colourful plumage and laying colourful eggs are costly because of the deposition of pigments in feathers and eggs and/or forming costly nanostructural substrates in feathers, and so it might be expected that those costs covary with the costs of nest building at the level of individuals and/or across species to produce of a suite of codivergent traits. Using a phylogenetically informed approach, we tested the hypothesis that species in which females alone invest energy building nests exhibit less sexual plumage dichromatism. However, we found comparative support for the opposite of this prediction. We then tested that species in which females alone build nests lay more colourful, and costlier, eggs because the dual costs of building nests and laying colourful eggs can only be borne by higher quality individuals. As expected, we found that species in which females build nests alone or together with males are more likely to lay colourfully pigmented eggs relative to species in which only males build nests. Finally, stochastic character mapping provided evidence of the repeated evolution of female-only nest building. Interspecific sex differences in plumage colouration therefore covary in a complex manner with female pre- (nest building) and post-copulatory (egg production) investment in reproduction.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk birds colour dichromatism egg colour nest building parental care
Megjelenés:	Naturwissenschaften. - 111 : 2 (2024), p. 1-10. -
További szerzők:	Hauber, Mark E. Löki Viktor (1989-) (biológus) Mainwaring, Mark C.
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM115767
035-os BibID:	(WoS)001098010400001 (Scopus)85175566565
Első szerző:	Nagy Jenő (biológus)
Cím:	Biogeographic history, egg colouration, and habitat selection in Turdus thrushes (Aves: Turdidae) / Jenő Nagy, Andrew G. Fulmer, Viktor Löki, Francisco Ruiz?Raya, Mark E. Hauber
Dátum:	2023
ISSN:	2676-8615 2676-8607
Megjegyzések:	Despite broad interest and recent experimentation, there is no single ecological model accounting for the adaptive significance of the diversity of avian eggshell colouration. The often blue-green eggs of Turdus thrushes are a charismatic example of this, having long captured cultural and scientific attention. Although the biology and evolutionary history of "true" thrushes is well understood, little is known about correlated evolution between shifts in habitat and eggshell pigmentation, and how these shifts map with Turdus biogeography. We applied phylogenetic comparative methods to assess the evolutionary timing of divergence and variation of life history traits and eggshell colouration and maculation presence in the genus. We found that eggshell colour diversified independently on several occasions in the past 11 million years, with much of the variation occurring within the last 4 million years. The majority of Turdus species lay blue-green eggs and also tend to be sedentary and forest-dwelling. Diet generalist species and species which have transitioned to a forest habitat are more likely to lay white eggs (10% of studied species). In turn, lineages in any habitat were more likely to transition to blue-green eggs. We found that variation in egg colour is increased in some clades, of which two lineages radiated in South America and the East Palearctic, in the past 2?4 million years. These findings provide support for the hypothesis that white eggs are more conspicuous to predators in open environments and that multiple, non-mutually exclusive constraints operate on the adaptive function of avian eggshell colour.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban folyóiratcikk correlated evolution eggshell pigmentation life history passeriformes
Megjelenés:	Biologia Futura. - 74 (2023), p. 1-8. -
További szerzők:	Fulmer, Andrew G. Löki Viktor (1989-) (biológus) Ruiz-Raya, Francisco Hauber, Mark E.
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: