Using multistate recapture modelling to assess age-specific bottlenecks in breeding success: a case study in the greater flamingo Phoenicopterus roseus. - Université de Bourgogne Accéder directement au contenu
Article Dans Une Revue Journal of Avian Biology Année : 2011

Using multistate recapture modelling to assess age-specific bottlenecks in breeding success: a case study in the greater flamingo Phoenicopterus roseus.

Résumé

Bird reproductive performance often increases with age or experience as a result of improved foraging skills, increased reproductive effort, improved coordination between partners, or a selection process. However, it remains unclear whether age and/or experience affect equally the successive steps of the breeding process, from egg laying to incubation and chick rearing. Using data from a long-term study of the Camargue (southern France) population of the greater flamingo Phoenicopterus roseus, we studied the influence of age on step-specific breeding performances during a single breeding season. We used, for the first time, multistate recapture models to evaluate the effect of age on breeding attendance (as a surrogate for breeding success) during incubation, early chick rearing and late chick rearing. Our results show a significant positive influence of age on breeding attendance, but only during the incubation period. Older parents had a higher probability than younger ones of completing incubation, whereas after the chick had hatched, the influence of parental age on breeding attendance was no longer significant. Although a high rate of nest desertion by younger flamingos during the middle of the incubation period coincided with a period of heavy rainfall, including rainfall level as a covariate did not improve the fit of the models. We discuss our results in relation to the evolution of life-history strategies in long-lived bird species and the influence of environmental instability.

Dates et versions

hal-00594752 , version 1 (20-05-2011)

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Lucie Schmaltz, Frank Cézilly, Arnaud Béchet. Using multistate recapture modelling to assess age-specific bottlenecks in breeding success: a case study in the greater flamingo Phoenicopterus roseus.. Journal of Avian Biology, 2011, 42 (2), pp.178-186. ⟨10.1111/j.1600-048X.2010.05112.x⟩. ⟨hal-00594752⟩
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