3 Works

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...

Climate and mating systems as drivers of global diversity of parental care in frogs

Balázs Vági, Zsolt Végvári, András Liker, Robert P. Freckleton & Tamás Székely
Aim Amphibians exhibit unusually diverse reproductive modes, including a wide array of parental care strategies. The evolutionary drivers of this diversity, however, remain unclear. Here we investigate three major factors which may predict interspecific variation in parental care strategies: climate, intrasexual selection and social environment. We hypothesise that some care forms evolved to cope with harsh conditions such as dry or unpredictable habitats. We contrast this prediction with the hypothesis that parental roles have coevolved...

Food availability limits avian reproduction in the city: an experimental study on great tits (Parus major)

Gábor Seress, Krisztina Sándor, Karl Evans & András Liker
1. The altered ecological and environmental conditions in towns and cities strongly affect demographic traits of urban animal populations, for example avian reproductive success is often reduced. Previous work suggests that this is partly driven by low insect availability during the breeding season, but robust experimental evidence that supports this food limitation hypothesis is not yet available. 2. We tested core predictions of the food limitation hypothesis using a controlled experiment that provided supplementary insect...

Registration Year

  • 2020

Resource Types

  • Dataset


  • University of Pannonia
  • University of Sheffield
  • University of Bath
  • University of Antwerp
  • University of Debrecen
  • Danube Research Institute