Are offspring begging levels exaggerated beyond the parental optimum? Evidence from a bidirectional selection experiment

Nolwenn Fresneau, Natalia Estramil & Wendt Müller
Parental care involves elaborate behavioural interactions between parents and their offspring, with offspring stimulating their parents via begging to provision resources. Thus, begging has direct fitness benefits as it enhances offspring growth and survival. It is nevertheless subject to a complex evolutionary trajectory, because begging may serve as a means for the offspring to manipulate parents in the context of evolutionary conflicts of interest. Furthermore, it has been hypothesized that begging is coadapted and potentially...
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