Advanced search
1 file | 353.20 KB

Cooperative breeding shapes post-fledging survival in an Afrotropical forest bird

Dries Van de Loock (UGent) , Diederik Strubbe (UGent) , Liesbeth De Neve (UGent) , Mwangi Githiru (UGent) , Erik Matthysen and Luc Lens (UGent)
(2017) ECOLOGY AND EVOLUTION. 7(10). p.3489-3493
Author
Organization
Abstract
For avian group living to be evolutionary stable, multiple fitness benefits are expected. Yet, the difficulty of tracking fledglings, and thus estimating their survival rates, limits our knowledge on how such benefits may manifest postfledging. We radio-tagged breeding females of the Afrotropical cooperatively breeding Placid greenbul (Phyllastrephus placidus) during nesting. Tracking these females after fledging permitted us to locate juvenile birds, their parents, and any helpers present and to build individual fledgling resighting datasets without incurring mortality costs or causing premature fledging due to handling or transmitter effects. A Bayesian framework was used to infer age-specific mortality rates in relation to group size, fledging date, maternal condition, and nestling condition. Postfledging survival was positively related to group size, with fledglings raised in groups with four helpers showing nearly 30% higher survival until independence compared with pair-only offspring, independent of fledging date, maternal condition or nestling condition. Our results demonstrate the importance of studying the early dependency period just after fledging when assessing presumed benefits of cooperative breeding. While studying small, mobile organisms after they leave the nest remains highly challenging, we argue that the telemetric approach proposed here may be a broadly applicable method to obtain unbiased estimates of postfledging survival.
Keywords
FLORIDA SCRUB-JAY, REPRODUCTIVE SUCCESS, FLEDGLING SURVIVAL, HELPERS, CONSERVATION, group size, helpers, juvenile independence, postfledging mortality, radio-telemetry

Downloads

  • Loock et al-2017-Ecology and Evolution.pdf
    • full text
    • |
    • open access
    • |
    • binary/octet-stream
    • |
    • 353.20 KB

Citation

Please use this url to cite or link to this publication:

Chicago
Van de Loock, Dries, Diederik Strubbe, Liesbeth De Neve, Mwangi Githiru, Erik Matthysen, and Luc Lens. 2017. “Cooperative Breeding Shapes Post-fledging Survival in an Afrotropical Forest Bird.” Ecology and Evolution 7 (10): 3489–3493.
APA
Van de Loock, D., Strubbe, D., De Neve, L., Githiru, M., Matthysen, E., & Lens, L. (2017). Cooperative breeding shapes post-fledging survival in an Afrotropical forest bird. ECOLOGY AND EVOLUTION, 7(10), 3489–3493.
Vancouver
1.
Van de Loock D, Strubbe D, De Neve L, Githiru M, Matthysen E, Lens L. Cooperative breeding shapes post-fledging survival in an Afrotropical forest bird. ECOLOGY AND EVOLUTION. 2017;7(10):3489–93.
MLA
Van de Loock, Dries, Diederik Strubbe, Liesbeth De Neve, et al. “Cooperative Breeding Shapes Post-fledging Survival in an Afrotropical Forest Bird.” ECOLOGY AND EVOLUTION 7.10 (2017): 3489–3493. Print.
@article{8558468,
  abstract     = {For avian group living to be evolutionary stable, multiple fitness benefits are expected. Yet, the difficulty of tracking fledglings, and thus estimating their survival rates, limits our knowledge on how such benefits may manifest postfledging. We radio-tagged breeding females of the Afrotropical cooperatively breeding Placid greenbul (Phyllastrephus placidus) during nesting. Tracking these females after fledging permitted us to locate juvenile birds, their parents, and any helpers present and to build individual fledgling resighting datasets without incurring mortality costs or causing premature fledging due to handling or transmitter effects. A Bayesian framework was used to infer age-specific mortality rates in relation to group size, fledging date, maternal condition, and nestling condition. Postfledging survival was positively related to group size, with fledglings raised in groups with four helpers showing nearly 30\% higher survival until independence compared with pair-only offspring, independent of fledging date, maternal condition or nestling condition. Our results demonstrate the importance of studying the early dependency period just after fledging when assessing presumed benefits of cooperative breeding. While studying small, mobile organisms after they leave the nest remains highly challenging, we argue that the telemetric approach proposed here may be a broadly applicable method to obtain unbiased estimates of postfledging survival.},
  author       = {Van de Loock, Dries and Strubbe, Diederik and De Neve, Liesbeth and Githiru, Mwangi and Matthysen, Erik and Lens, Luc},
  issn         = {2045-7758},
  journal      = {ECOLOGY AND EVOLUTION},
  keyword      = {FLORIDA SCRUB-JAY,REPRODUCTIVE SUCCESS,FLEDGLING SURVIVAL,HELPERS,CONSERVATION,group size,helpers,juvenile independence,postfledging mortality,radio-telemetry},
  language     = {eng},
  number       = {10},
  pages        = {3489--3493},
  title        = {Cooperative breeding shapes post-fledging survival in an Afrotropical forest bird},
  url          = {http://dx.doi.org/10.1002/ece3.2744},
  volume       = {7},
  year         = {2017},
}

Altmetric
View in Altmetric
Web of Science
Times cited: