10.5061/DRYAD.53MP5NG
Hodel, Richard G.J.
University of Florida
Knowles, L. Lacey
University of Michigan-Ann Arbor
McDaniel, Stuart F.
University of Florida
Payton, Adam C.
University of Florida
Dunaway, Jordan F.
University of Florida
Soltis, Pam S.
University of Florida
Soltis, Douglas E.
University of Florida
Hodel, Richard G. J.
University of Florida
University of Michigan-Ann Arbor
Soltis, Pamela S.
University of Florida
Data from: Terrestrial species adapted to sea dispersal: differences in
propagule dispersal of two Caribbean mangroves
Dryad
dataset
2018
Laguncularia racemosa
long distance dispersal
Rhizophora mangle
mangrove
Caribbean
comparative phylogeography
National Science Foundation
https://ror.org/021nxhr62
DEB-1501600
2018-10-03T13:50:24Z
2018-10-03T13:50:24Z
en
https://doi.org/10.1111/mec.14894
589672214 bytes
1
CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
A central goal of comparative phylogeography is to understand how
species-specific traits interact with geomorphological history to govern
the geographic distribution of genetic variation within species. One key
biotic trait with an immense impact on the spatial patterns of
intraspecific genetic differentiation is dispersal. Here we quantify how
species-specific traits directly related to dispersal affect genetic
variation in terrestrial organisms with adaptations for dispersal by sea,
not land—the mangroves of the Caribbean. We investigate the phylogeography
of white mangroves (Laguncularia racemosa, Combretaceae) and red mangroves
(Rhizophora mangle, Rhizophoraceae) using chloroplast genomes and nuclear
markers (thousands of RAD-Seq loci) from individuals throughout the
Caribbean. Both coastal tree species have viviparous propagules that can
float in salt water for months, meaning they are capable of dispersing
long distances. Spatially explicit tests of the role of ocean currents on
patterning genetic diversity revealed that ocean currents act as a
mechanism for facilitating dispersal, but other means of moving genetic
material are also important. We measured pollen- versus propagule-mediated
gene flow and discovered that in white mangroves, seeds were more
important for promoting genetic connectivity between populations, but in
red mangroves, the opposite was true: pollen contributed more. This result
challenges our concept of the importance of both proximity to ocean
currents for moving mangrove seeds and the extent of long-distance pollen
dispersal. This study also highlights the importance of spatially explicit
quantification of both abiotic (ocean currents) and biotic (dispersal)
factors contributing to gene flow to understand fully the phylogeographic
histories of species.
Red mangrove chloroplast DNA sequence alignmentThis is a fasta alignment
of the chloroplast genome sequences for 50 red mangrove
individualsred_chloroplast.fastaWhite mangrove chloroplast DNA sequence
alignmentThis is a fasta alignment of the chloroplast genome sequences for
50 white mangrove individualswhite_chloroplast.fastaRed mangrove nuclear
DNA sequence alignmentThis is a fasta file containing nuclear (RAD-Seq)
DNA sequences for 122 red mangrove individualsred_nuclear.fastaWhite
mangrove nuclear DNA sequence alignmentThis is a fasta file containing
nuclear (RAD-Seq) DNA sequences for 54 white mangrove
individualswhite_nuclear.fastaVCF file of red mangrove SNPsThis is a VCF
file containing SNP data for 122 red mangrove
individualsred_SNPs.vcfSupplementThis supplement contains three
Supplemental Tables and three Supplemental FiguresVCF file of white
mangrove SNPsThis is a VCF file containing SNP data for 54 white mangrove
individualswhite_SNPs.vcfOcean current layersZipped folder containing 24
.asc files with ocean current bearing (East, North) and velocity for the
study regionocean_current_layers.zip
Caribbean