10.5061/DRYAD.PM1R2
Hiller, Alexandra
Smithsonian Tropical Research Institute
Lessios, Harilaos A.
Smithsonian Tropical Research Institute
Data from: Phylogeography of Petrolisthes armatus, an invasive species
with low dispersal ability
Dryad
dataset
2018
Petrolisthes armatus
Atlantic
Holocene
2018-04-10T00:00:00Z
2018-04-10T00:00:00Z
en
https://doi.org/10.1038/s41598-017-03410-8
722525 bytes
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Theoretically, species with high population structure are likely to expand
their range, because marginal populations are free to adapt to local
conditions; however, meta-analyses have found a negative relation between
structure and invasiveness. The crab Petrolisthes armatus has a wide
native range, which has expanded in the last three decades. We sequenced
1718 bp of mitochondrial DNA from native and recently established
populations to determine the population structure of the former and the
origin of the latter. There was phylogenetic separation between Atlantic
and eastern Pacific populations, and between east and west Atlantic ones.
Haplotypes on the coast of Florida and newly established populations in
Georgia and South Carolina belong to a different clade from those from
Yucatán to Brazil, though a few haplotypes are shared. In the Pacific,
populations from Colombia and Ecuador are highly divergent from those from
Panamá and the Sea of Cortez. In general, populations were separated
hundreds to million years ago with little subsequent gene flow. High
genetic diversity in the newly established populations shows that they
were founded by many individuals. Range expansion appears to have been
limited by low dispersal rather than lack of ability of marginal
populations to adapt to extreme conditions.
armatus_COIHL_AllHaplosAlignment of partial DNA sequences of the
mitochondrial COI gene (fragment COIHL)armatus_Concat_AllHaplosAlignment
of concatenated partial DNA sequences of the mitochondrial genes COI and
16S rDNA
Atlantic Ocean
East Pacific