The decline in yolk progesterone concentrations during incubation is dependent on embryonic development in the European starling.


Oviparous amniotes, particularly birds, have become model systems in which to study how mothers may utilize steroids to adaptively adjust offspring development. Although there is now ample evidence that maternally derived steroids in the egg at oviposition can influence offspring phenotype, very little is known about how these steroids elicit such effects… (More)
DOI: 10.1016/j.ygcen.2011.12.014


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