Does genetic structure reflect differences in non-breeding movements? A case study in small, highly mobile seabirds

Quillfeldt, Petra; Moodley, Yoshan; Weimerskirch, Henri; Cherel, Yves; Delord, Karine; Phillips, Richard A.; Navarro, Joan; Calderón, Luciano; Masello, Juan F.. 2017 Does genetic structure reflect differences in non-breeding movements? A case study in small, highly mobile seabirds. BMC Evolutionary Biology, 17 (1), 160. 11, pp.

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In seabirds, the extent of population genetic and phylogeographic structure varies extensively among species. Genetic structure is lacking in some species, but present in others despite the absence of obvious physical barriers (landmarks), suggesting that other mechanisms restrict gene flow. It has been proposed that the extent of genetic structure in seabirds is best explained by relative overlap in non-breeding distributions of birds from different populations. We used results from the analysis of microsatellite DNA variation and geolocation (tracking) data to test this hypothesis. We studied three small (130–200 g), very abundant, zooplanktivorous petrels (Procellariiformes, Aves), each sampled at two breeding populations that were widely separated (Atlantic and Indian Ocean sectors of the Southern Ocean) but differed in the degree of overlap in non-breeding distributions; the wintering areas of the two Antarctic prion (Pachyptila desolata) populations are separated by over 5000 km, whereas those of the blue petrels (Halobaena caerulea) and thin-billed prions (P. belcheri) show considerable overlap. Therefore, we expected the breeding populations of blue petrels and thin-billed prions to show high connectivity despite their geographical distance, and those of Antarctic prions to be genetically differentiated.

Item Type: Publication - Article
Digital Object Identifier (DOI):
Programmes: BAS Programmes > BAS Programmes 2015 > Ecosystems
ISSN: 1471-2148
Additional Keywords: Falkland Islands, genetic structure, Kerguelen Islands, non breeding distribution, phylogeography, Procellaridae, South Georgia, spatial distribution
Date made live: 25 Jul 2017 08:33 +0 (UTC)

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