Maternal androgens in black-headed gull (Larus ridibundus) eggs: consequences for chick development

Proceedings. Biological Sciences
Corine M EisingTon G G Groothuis

Abstract

We tested the hypothesis that mother birds counterbalance the negative effects of hatching asynchrony for later-hatched chicks by increasing the yolk androgen concentrations in consecutive eggs of their clutch. In doing so, they may adaptively tune each offspring's competitive ability and, thus, growth and survival. However, evidence in support of this hypothesis is contradictory. The yolk concentrations of maternal androgens in the eggs of black-headed gulls increase significantly with the laying order of the eggs in a clutch. We experimentally tested the functional consequences of this increase on chick development under natural conditions by injecting eggs with either an oil or androgen solution. We created experimental clutches in which androgen levels either stayed constant or increased with laying order while controlling for differences in egg quality by using only first-laid eggs. We then compared development, growth and survival between these broods. Androgen treatment enhanced embryonic development because androgen-treated eggs hatched half a day earlier than controls, while their size at hatching was similar to oil-treated controls. Androgen treatment did not increase chick survival, but it enhanced growth. Androgen-t...Continue Reading

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Citations

Jan 13, 2012·Journal of Comparative Physiology. B, Biochemical, Systemic, and Environmental Physiology·Susana I PelucPenelope Gibbs
Jan 29, 2013·Behavior Genetics·Tolulope O AriyomoPenelope J Watt
Jan 16, 2004·General and Comparative Endocrinology·Lisa S Hayward, John C Wingfield
Mar 19, 2004·General and Comparative Endocrinology·Charles A ManireDavid L Hess
Apr 7, 2005·Hormones and Behavior·Joanna RutkowskaDiego Gil
Jun 19, 2003·General and Comparative Endocrinology·Corine M EisingTon G G Groothuis
Dec 7, 2006·Biology Letters·Tong G GroothuisWendt Müller
Dec 7, 2006·Biology Letters·Corine M EisingTon G G Groothuis
Jun 12, 2009·Biology Letters·Wendt MüllerTon G G Groothuis
Nov 13, 2002·Proceedings. Biological Sciences·Wendt MüllerTon G G Groothuis
Mar 9, 2004·Proceedings. Biological Sciences·Kees van OersArie J van Noordwijk
Apr 3, 2004·Proceedings. Biological Sciences·Nancy Tyler Burley, Valerie Suzanne Foster
Aug 13, 2004·Proceedings. Biological Sciences·Barbara TschirrenHubert Schwabl
Sep 30, 2005·Proceedings. Biological Sciences·Wendt MüllerHeli Siitari
Mar 8, 2006·Proceedings. Biological Sciences·Nikolaus von EngelhardtTon G G Groothuis
Jun 23, 2006·Proceedings. Biological Sciences·L GilbertJ A Graves
Jul 30, 2010·Proceedings. Biological Sciences·Ryan T PaitzJoseph M Casto
Jun 3, 2011·Proceedings. Biological Sciences·Terézia HorváthováTobias Uller
Jul 15, 2011·Proceedings. Biological Sciences·F H I D SegersB Taborsky
Dec 1, 2007·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Thomas E Martin, Hubert Schwabl
May 9, 2012·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Sandrine MeylanJean Clobert
Oct 1, 2015·Developmental Psychobiology·Aline BertinLudovic Calandreau
Jan 26, 2008·The American Naturalist·J Dylan Maddox, Patrick J Weatherhead

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