Full circumpolar migration ensures evolutionary unity in the Emperor penguin - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Nature Communications Année : 2016

Full circumpolar migration ensures evolutionary unity in the Emperor penguin

Résumé

Defining reliable demographic models is essential to understand the threats of ongoing environmental change. Yet, in the most remote and threatened areas, models are often based on the survey of a single population, assuming stationarity and independence in population responses. This is the case for the Emperor penguin Aptenodytes forsteri, a flagship Antarctic species that may be at high risk continent-wide before 2100. Here, using genome-wide data from the whole Antarctic continent, we reveal that this top-predator is organized as one single global population with a shared demography since the late Quaternary. We refute the view of the local population as a relevant demographic unit, and highlight that (i) robust extinction risk estimations are only possible by including dispersal rates and (ii) colony-scaled population size is rather indicative of local stochastic events, whereas the species’ response to global environmental change is likely to follow a shared evolutionary trajectory.
Fichier principal
Vignette du fichier
ncomms11842.pdf (3.57 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-01331960 , version 1 (15-06-2016)

Identifiants

Citer

Robin Cristofari, Giorgio Bertorelle, André Ancel, Andrea Benazzo, Yvon Le Maho, et al.. Full circumpolar migration ensures evolutionary unity in the Emperor penguin. Nature Communications, 2016, 7, pp.11842. ⟨10.1038/ncomms11842⟩. ⟨hal-01331960⟩
298 Consultations
135 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More