Fully reversible phenotypic plasticity of digestive physiology in young house sparrows: lack of long-term effect of early diet composition.

Abstract excerpt

Feeding conditions during the nestling period may significantly affect whole-life fitness in altricial birds but little is known about the physiological mechanisms responsible for these effects. Permanent changes (irreversible developmental plasticity) in digestive physiology caused by the neonatal diet may form such a mechanism. We previously showed that the lack of starch in the diet of house sparrow (Passer...

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