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Life history of animals is strongly linked with the variability in postnatal growth rates, because the ability to achieve necessary body mass early in life is directly connected with the ability to survive and reproduce later in life. Surprisingly, little is known about the physiological mechanisms connecting food availability with the variability of growth in wild animals.
We used a hormonal...
Post‐natal growth rate is an important life‐history trait that is strongly associated with survival during the transition to independence and the overwinter period. In laboratory conditions, insulin‐like growth factor 1 (IGF‐1) has been shown to be one of the main hormones regulating growth and development in maturing vertebrates. However, the extent to which plasma IGF‐1 enhances growth in free‐living...
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