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Statements

Subject Item
n2:RIV%2F61989592%3A15310%2F11%3A33119794%21RIV12-MSM-15310___
rdf:type
skos:Concept n18:Vysledek
dcterms:description
Females can adaptively adjust phenotype of their offspring via deposition of various compounds into eggs, including androgens and other hormones. Here, I investigated how egg yolk androgens (testosterone and androstenedione) related to environmental conditions and parental traits in the great tit (Parus major) across three breeding seasons. Male and female traits studied included age, condition and multiple feather ornaments, both carotenoid- and melanin-based (carotenoid and UV chroma of yellow breast feathers, area of black breast band and white cheek immaculateness). Yolk mass increased with laying temperature, laying date and area of male black breast band. Concentration of androgens increased with breeding density, territory quality and carotenoid chroma of male yellow breast feathers and was higher in mates of 1 year old as compared to older males. Yolk androgens were not related to any of the female traits analysed. These patterns were thus consistent with (1) social and environmental effects on yolk mass and composition and (2) both positive and negative differential allocation strategies of resource allocation in females. Overall, male traits were the most important predictors of egg yolk characteristics in this socially monogamous songbird. Females can adaptively adjust phenotype of their offspring via deposition of various compounds into eggs, including androgens and other hormones. Here, I investigated how egg yolk androgens (testosterone and androstenedione) related to environmental conditions and parental traits in the great tit (Parus major) across three breeding seasons. Male and female traits studied included age, condition and multiple feather ornaments, both carotenoid- and melanin-based (carotenoid and UV chroma of yellow breast feathers, area of black breast band and white cheek immaculateness). Yolk mass increased with laying temperature, laying date and area of male black breast band. Concentration of androgens increased with breeding density, territory quality and carotenoid chroma of male yellow breast feathers and was higher in mates of 1 year old as compared to older males. Yolk androgens were not related to any of the female traits analysed. These patterns were thus consistent with (1) social and environmental effects on yolk mass and composition and (2) both positive and negative differential allocation strategies of resource allocation in females. Overall, male traits were the most important predictors of egg yolk characteristics in this socially monogamous songbird.
dcterms:title
Yolk androgens in great tit eggs are related to male attractiveness, breeding density and territory quality Yolk androgens in great tit eggs are related to male attractiveness, breeding density and territory quality
skos:prefLabel
Yolk androgens in great tit eggs are related to male attractiveness, breeding density and territory quality Yolk androgens in great tit eggs are related to male attractiveness, breeding density and territory quality
skos:notation
RIV/61989592:15310/11:33119794!RIV12-MSM-15310___
n18:predkladatel
n19:orjk%3A15310
n3:aktivita
n10:Z
n3:aktivity
Z(MSM6198959212)
n3:cisloPeriodika
5
n3:dodaniDat
n6:2012
n3:domaciTvurceVysledku
n12:2707012
n3:druhVysledku
n16:J
n3:duvernostUdaju
n8:S
n3:entitaPredkladatele
n14:predkladatel
n3:idSjednocenehoVysledku
242048
n3:idVysledku
RIV/61989592:15310/11:33119794
n3:jazykVysledku
n20:eng
n3:klicovaSlova
Feather colouration, Maternal effects, Offspring engineering, Paternal effects, Sexual selection
n3:klicoveSlovo
n4:Paternal%20effects n4:Feather%20colouration n4:Sexual%20selection n4:Offspring%20engineering n4:Maternal%20effects
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[912D3819A6A7]
n3:nazevZdroje
Behavioral Ecology and Sociobiology
n3:obor
n17:EG
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
1
n3:rokUplatneniVysledku
n6:2011
n3:svazekPeriodika
65
n3:tvurceVysledku
Remeš, Vladimír
n3:wos
000290726100010
n3:zamer
n11:MSM6198959212
s:issn
0340-5443
s:numberOfPages
10
n15:doi
10.1007/s00265-011-1139-9
n13:organizacniJednotka
15310