Počet záznamů: 1
Maternal influence on eggshell maculation: implications for cryptic camouflaged eggs
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SYSNO ASEP 0458785 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Maternal influence on eggshell maculation: implications for cryptic camouflaged eggs Tvůrce(i) Duval, C. (GB)
Cassey, P. (AU)
Lovell, P.G. (GB)
Mikšík, Ivan (FGU-C) RID, ORCID, SAI
Reynolds, S.J. (GB)
Spencer, K.A. (GB)Zdroj.dok. Journal of Ornithology. - : Springer - ISSN 0021-8375
Roč. 157, č. 1 (2016), s. 303-310Poč.str. 8 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova body condition ; camouflage ; Coturnix coturnix japonica ; eggshell maculation ; Protoporphyrin Vědní obor RIV CB - Analytická chemie, separace CEP GA15-01948S GA ČR - Grantová agentura ČR Institucionální podpora FGU-C - RVO:67985823 UT WOS 000368610900030 DOI 10.1007/s10336-015-1278-2 Anotace Egg camouflage may explain the adaptive significance of avian eggshell pigmentation in ground-nesting species. Eggshell maculation (spots) is predominantly due to protoporphyrin, but both biliverdin (antioxidant) and protoporphyrin (pro-oxidant) may be present in spotted eggshells. Because of their role in oxidative stress, the deposition of eggshell pigments might be condition-dependent. However, because of the fitness benefits of eggshell coloration, cryptic eggshell appearance should be strongly conserved in ground-nesting species regardless of female condition and eggshell pigment concentrations. We investigated whether Japanese quails (Coturnix coturnix japonica) maintained eggshell maculation under food restriction. We quantified eggshell maculation (i.e., percentage of spot coverage) using digital photography, and both protoporphyrin and biliverdin concentrations of eggs laid by females either on a food-restricted or an ad libitum diet. Females on a high quality diet, which are known to decrease the deposition of eggshell protoporphyrin, decreased eggshell maculation compared with food-restricted females that maintained it. For the first time, we propose an experimental study which suggests that eggshell maculation depends on female body condition and that manipulating eggshell maculation may be the strategy used by females to potentially optimize egg camouflage. Pracoviště Fyziologický ústav Kontakt Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Rok sběru 2017
Počet záznamů: 1