RT Journal Article
SR Electronic
T1 Developmental stage-dependent effects of perceived predation risk on physiology and fledging success of tree swallows (<em>Tachycineta bicolor</em>)
JF bioRxiv
FD Cold Spring Harbor Laboratory
SP 2022.12.27.522041
DO 10.1101/2022.12.27.522041
A1 Sabrina M. McNew
A1 Conor C. Taff
A1 Cedric Zimmer
A1 Jennifer J. Uehling
A1 Thomas A. Ryan
A1 David Chang van Oordt
A1 Jennifer L. Houtz
A1 Allison S. Injaian
A1 Maren N. Vitousek
YR 2022
UL http://biorxiv.org/content/early/2022/12/27/2022.12.27.522041.abstract
AB The risk of predation directly affects physiology, behavior, and fitness of wild birds. Social interactions with conspecifics may affect how individuals respond to stressors such as predators. Strong social connections could help individuals recover from a stressful experience; however, competitive interactions also have the potential to exacerbate stress. Few studies have investigated the interaction between environmental stressors and the social landscape in wild bird populations. Here, we experimentally simulated predation attempts on breeding female tree swallows (Tachicyneta bicolor). At the same time, we manipulated female breast plumage color, a key social signal. Simulated predation events on tree swallows negatively affected their nestlings’ condition, telomere lengths, and fledging success. However, the effects of experimental manipulations were timing-dependent: simulated predation during the early nestling period was more detrimental than “predation” during incubation. Contrary to our expectations, manipulation of the social environment did not affect the response of tree swallows to simulated predation. However, manipulating female plumage during the nestling period did affect nestling size, indicating an effect of the social environment on reproductive success. Our data demonstrate that transient stressors on breeding female birds can have carry-over effects on their nestlings, some of which may be long-lasting.Competing Interest StatementThe authors have declared no competing interest.