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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F12%3A33142588%21RIV13-MSM-15310___
rdf:type
skos:Concept n3:Vysledek
dcterms:description
The colourful appearance of bird eggshells has long fascinated biologists and considerable research effort has focused on the structure and biochemistry of the avian eggshell matrix. The presence of tetrapyrrole pigments was identi?ed nearly a century ago. Surprisingly, how the concentrations of avian eggshell pigments vary among related species, and whether this variability is associated with either eggshell appearance and/or species life-history traits, remains poorly understood. We quanti?ed the concentrations of the two key eggshell pigments, protoporphyrin IX and biliverdin, from a diverse sample of eggshells stored at the Natural History Museum, Tring, UK. We explicitly tested how these two pigments are associated with physical measures of eggshell coloration and whether the pigment concentrations and colour diversity co-vary with phylogenetic affiliations among species. We also tested a series of comparative hypotheses regarding the association between the concentrations of the two pigments and speci?c life-history and breeding ecology traits. Across species, the average concentrations of protoporphyrin and biliverdin were positively correlated, and both strongly co-varied with phylogenetic relatedness. Controlling for phylogeny, protoporphyrin concentration was associated with a higher likelihood of cavity nesting and ground nesting, whereas biliverdin concentration was associated with a higher likelihood of non-cavity nesting habit and bi-parental provisioning. Although unlikely to be explained by a single function, the breeding ecology and life history-dependence of eggshell pigment concentrations in these comparative analyses implies that related species share pigment strategies, and that those strategies relate to broad adaptive roles in the evolution of variation in avian eggshell coloration and its underlying mechanisms. The colourful appearance of bird eggshells has long fascinated biologists and considerable research effort has focused on the structure and biochemistry of the avian eggshell matrix. The presence of tetrapyrrole pigments was identi?ed nearly a century ago. Surprisingly, how the concentrations of avian eggshell pigments vary among related species, and whether this variability is associated with either eggshell appearance and/or species life-history traits, remains poorly understood. We quanti?ed the concentrations of the two key eggshell pigments, protoporphyrin IX and biliverdin, from a diverse sample of eggshells stored at the Natural History Museum, Tring, UK. We explicitly tested how these two pigments are associated with physical measures of eggshell coloration and whether the pigment concentrations and colour diversity co-vary with phylogenetic affiliations among species. We also tested a series of comparative hypotheses regarding the association between the concentrations of the two pigments and speci?c life-history and breeding ecology traits. Across species, the average concentrations of protoporphyrin and biliverdin were positively correlated, and both strongly co-varied with phylogenetic relatedness. Controlling for phylogeny, protoporphyrin concentration was associated with a higher likelihood of cavity nesting and ground nesting, whereas biliverdin concentration was associated with a higher likelihood of non-cavity nesting habit and bi-parental provisioning. Although unlikely to be explained by a single function, the breeding ecology and life history-dependence of eggshell pigment concentrations in these comparative analyses implies that related species share pigment strategies, and that those strategies relate to broad adaptive roles in the evolution of variation in avian eggshell coloration and its underlying mechanisms.
dcterms:title
Why are birds' eggs colourful? Eggshell pigments co-vary with life-history and nesting ecology among British breeding non-passerine birds Why are birds' eggs colourful? Eggshell pigments co-vary with life-history and nesting ecology among British breeding non-passerine birds
skos:prefLabel
Why are birds' eggs colourful? Eggshell pigments co-vary with life-history and nesting ecology among British breeding non-passerine birds Why are birds' eggs colourful? Eggshell pigments co-vary with life-history and nesting ecology among British breeding non-passerine birds
skos:notation
RIV/61989592:15310/12:33142588!RIV13-MSM-15310___
n3:predkladatel
n4:orjk%3A15310
n6:aktivita
n12:Z n12:P n12:I
n6:aktivity
I, P(GA203/08/1428), Z(AV0Z5011922), Z(MSM6198959212)
n6:cisloPeriodika
3
n6:dodaniDat
n13:2013
n6:domaciTvurceVysledku
n17:3183831
n6:druhVysledku
n15:J
n6:duvernostUdaju
n7:S
n6:entitaPredkladatele
n19:predkladatel
n6:idSjednocenehoVysledku
180964
n6:idVysledku
RIV/61989592:15310/12:33142588
n6:jazykVysledku
n14:eng
n6:klicovaSlova
biliverdin - phylogenetically controlled GLM - protoporphyrin
n6:klicoveSlovo
n21:biliverdin
n6:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n6:kontrolniKodProRIV
[E52FF72ACAFC]
n6:nazevZdroje
Biological Journal of the Linnean Society
n6:obor
n20:EG
n6:pocetDomacichTvurcuVysledku
1
n6:pocetTvurcuVysledku
8
n6:projekt
n18:GA203%2F08%2F1428
n6:rokUplatneniVysledku
n13:2012
n6:svazekPeriodika
106
n6:tvurceVysledku
Cassey, Phillip Grim, Tomáš Thomas, Gavin H Portugal, Steven J
n6:wos
000305182200016
n6:zamer
n16:MSM6198959212 n16:AV0Z5011922
s:issn
0024-4066
s:numberOfPages
16
n5:doi
10.1111/j.1095-8312.2012.01877.x
n11:organizacniJednotka
15310