10.5061/DRYAD.FG86P
Raisin, Claire
University of Sheffield
University of Kent
Dawson, Deborah A.
University of Sheffield
Hipperson, Helen
University of Sheffield
Horsburgh, Gavin J.
University of Sheffield
Groombridge, Jim J.
University of Kent
Ismar, Stefanie M.H.
Mauritian Wildlife Foundation
Sweet, Paul
American Museum of Natural History
Jones, Carl G.
Durrell Wildlife Conservation Trust
Mauritian Wildlife Foundation
Tatayah, Vikash
Mauritian Wildlife Foundation
Ruhomaun, Kevin
Government of Mauritius
Ken, Norris
Zoological Society of London
Booth Jones, Katherine A.
Zoological Society of London
University of Sheffield
Nicoll, Malcolm A.C.
University of Sheffield
Nicoll, Malcolm A. C.
Zoological Society of London
Norris, Ken
Zoological Society of London
Ismar, Stefanie M. H.
University of Auckland
Data from: Widespread gene flow between oceans in a pelagic seabird
species complex
Dryad
dataset
2017
Pterodroma alba
Pterodroma neglecta
Pterodroma heraldica
Pterodroma arminjoniana
Pterodroma ultima
Holocene
2017-08-08T13:01:25Z
2017-08-08T13:01:25Z
en
https://doi.org/10.1111/mec.14330
87481 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Global-scale gene flow is an important concern in conservation biology as
it has the potential to either increase or decrease genetic diversity in
species and populations. Although many studies focus on the gene flow
between different populations of a single species, the potential for gene
flow and introgression between species is understudied, particularly in
seabirds. The only well-studied example of a mixed-species, hybridizing
population of petrels exists on Round Island, in the Indian Ocean.
Previous research assumed that Round Island represents a point of
secondary contact between Atlantic (Pterodroma arminjoniana) and Pacific
species (Pterodroma neglecta and Pterodroma heraldica). This study uses
microsatellite genotyping and tracking data to address the possibility of
between-species hybridization occurring outside the Indian Ocean.
Dispersal and gene flow spanning three oceans were demonstrated between
the species in this complex. Analysis of migration rates estimated using
bayesass revealed unidirectional movement of petrels from the Atlantic and
Pacific into the Indian Ocean. Conversely, structure analysis revealed
gene flow between species of the Atlantic and Pacific oceans, with
potential three-way hybrids occurring outside the Indian Ocean.
Additionally, geolocation tracking of Round Island petrels revealed two
individuals travelling to the Atlantic and Pacific. These results suggest
that interspecific hybrids in Pterodroma petrels are more common than was
previously assumed. This study is the first of its kind to investigate
gene flow between populations of closely related Procellariiform species
on a global scale, demonstrating the need for consideration of widespread
migration and hybridization in the conservation of threatened seabirds.
Pterodroma microsatellite genotype datasetGenotypes for Pterodroma petrels
generated in GeneMapper from final set of 12 autosomal microsatellite
markers. Used in the manuscript for structure and gene flow
analysis.Genotype dataset for analysis.csv
Indian Ocean
Atlantic Ocean
Pacific Ocean