Nestling erythrocyte resistance to oxidative stress predicts fledging success but not local recruitment in a wild bird
Sylvain Losdat, Fabrice Helfenstein, Jonathan D. Blount, V. Marri, L. Maronde & Heinz Richner
| Résumé |
Stressful conditions experienced by individuals during their early
development have long-term consequences on various life-history
traits such as survival until first reproduction. Oxidative stress
has been shown to affect various fitness-related traits and to
influence key evolutionary trade-offs but whether an individual's
ability to resist oxidative stress in early life affects its
survival has rarely been tested. In the present study, we used four
years of data obtained from a free-living great tit population
(Parus major; n = 1658 offspring) to test whether pre-fledging
resistance to oxidative stress, measured as erythrocyte resistance
to oxidative stress and oxidative damage to lipids, predicted
fledging success and local recruitment. Fledging success and local
recruitment, both major correlates of survival, were primarily
influenced by offspring body mass prior to fledging. We found that
pre-fledging erythrocyte resistance to oxidative stress predicted
fledging success, suggesting that individual resistance to
oxidative stress is related to short-term survival. However, local
recruitment was not influenced by pre-fledging erythrocyte
resistance to oxidative stress or oxidative damage. Our results
suggest that an individual ability to resist oxidative stress at
the offspring stage predicts short-term survival but does not
influence survival later in life. |
| Mots-clés |
oxidative stress, early-life conditions, local recruitment, fledging, success, Parus major, parus-major, life-history, great tits, survival, population, fitness, growth, damage, cost, size |
| Citation | Losdat, S., Helfenstein, F., Blount, J. D., Marri, V., Maronde, L., & Richner, H. (2013). Nestling erythrocyte resistance to oxidative stress predicts fledging success but not local recruitment in a wild bird. Biology Letters, 9(1). |
| Type | Article de périodique (Anglais) |
| Date de publication | 2013 |
| Nom du périodique | Biology Letters |
| Volume | 9 |
| Numéro | 1 |