TY  - JOUR
AU  - Christophe Barbraud, Karine Delord
PY  - 2021//
TI  - Selection against immigrants in wild seabird populations
KW  - Dispersal fitness immigrant seabirds sex-biased dispersal
N2  - Immigration is a major demographic parameter shaping population dynamics and is an important driver of eco-evolutionary patterns, but the fitness consequences for individuals following their settlement to a new population (immigrants) remain poorly tested in wild animal populations, particularly among long-lived species. Here we show that immigrants have a lower fitness than residents in three wild seabird populations (wandering albatross Diomedea exulans, southern fulmar Fulmarus glacialoides, snow petrel Pagodroma nivea). Across all species and during a 32-year period, immigrants made on average −9 to 29% fewer breeding attempts, had 5–31% fewer fledglings, had 2–16% lower breeding success and produced 6–46% fewer recruits. Female immigration and male residency were also favored through differences in breeding performance. We provide evidence for selection against immigrants in wild populations of long-lived species and our results are consistent with female-biased dispersal in birds being driven by asymmetric limiting resources and the competitive ability of dispersers vs. non-dispersers.
SN  - 1461-0248
UR  - http://dx.doi.org/10.1111/ele.13624
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=8418), last updated on Mon, 01 Jul 2024 13:32:56 +0200
ID  - ChristopheBarbraud2021
ER  -