10.5061/DRYAD.7GP1F
Baums, Iliana B.
Pennsylvania State University
Boulay, Jennifer N.
Pennsylvania State University
Polato, Nicholas R.
Pennsylvania State University
Hellberg, Michael E.
Louisiana State University of Alexandria
Data from: No gene flow across the Eastern Pacific Barrier in the
reef-building coral Porites lobata
Dryad
dataset
2012
Porites lobata
Cnidarians
Holocene
2012-07-09T17:00:12Z
2012-07-09T17:00:12Z
en
https://doi.org/10.1111/j.1365-294X.2012.05733.x
275293 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
The expanse of deep water between the Central Pacific islands and the
continental shelf of the Eastern Tropical Pacific is regarded as the
world’s most potent marine biogeographic barrier. During recurrent
climatic fluctuations (ENSO - El Niño Southern Oscillation), however,
changes in water temperature and the speed and direction of currents
become favorable for trans-oceanic dispersal of larvae from central
Pacific to marginal Eastern Pacific reefs. Here we investigate the
population connectivity of the reef building coral Porites lobata across
the Eastern Pacific Barrier (EPB). Patterns of recent gene flow in samples
(n=1173) from the Central Pacific and the Eastern Tropical Pacific (ETP),
were analyzed with 12 microsatellite loci. Results indicated that P.
lobata from the ETP are strongly isolated from those in the central
Pacific and Hawaii (F’CT=0.509; P<0.001). However, samples from
Clipperton Atoll, an oceanic island on the eastern side of the EPB,
grouped with the Central Pacific. Within the Central Pacific, Hawaiian
populations were strongly isolated from three co-occurring clusters found
throughout the remainder of the Central Pacific. No further substructure
was evident in the ETP. Changes in oceanographic conditions during ENSO
over the past several thousand years thus appear insufficient to support
larval deliveries from the central Pacific to the ETP or strong
post-settlement selection acts on ETP settlers from the central Pacific.
Recovery of P. lobata populations in the frequently disturbed ETP thus
must depend on local larval sources.
DRYAD_BaumsEtAl_2012_Plobata_GenotypesDRYAD_BaumsEtAl_2012_StructureInputInput file for Structure v 2.3.3. First line contains locus names. One line per individual. Missing data is encoded by -9. Column1: Sample ID; Column2: Population; Column3: Population Flag; Column 4ff: allele sizesDRYAD_BaumsEtAl_2012_StructureParametersParameters for Structure v 2.3.3.
Galapagos
Ecuador
Tropical Eastern Pacific
Fiji
Marquesas
Clipperton Atoll
Hawaii
Samoa
Costa Rica
Line Islands
Moorea
Johnston Atoll
Panama
Marshalls
Indonesia
Phoenix Islands