Phylogeographic patterning among two codistributed shrimp species (Crustacea: Decapoda: Palaemonidae) reveals high levels of connectivity across biogeographic regions along the South African coast
Date
2017-03-10
Journal Title
Journal ISSN
Volume Title
Publisher
Public Library of Science
Abstract
We compare the genetic structuring and demographic history of two sympatric caridean
shrimp species with distinct life history traits, one amphidromous species Palaemon capensis
and one marine/estuarine species Palaemon peringueyi, in the historical biogeographical
context of South Africa. A total of 103 specimens of P. capensis collected from 12 localities
and 217 specimens of P. peringueyi collected from 24 localities were sequenced for the
mitochondrial cytochrome oxidase one (CO1) locus. Results from analyses of molecular
variance (AMOVA), pairwise ΦST comparisons and haplotype networks demonstrate weak
to moderate genetic differentiation in P. capensis and P. peringueyi respectively. P. peringueyi
exhibits partial isolation between populations associated with distinct biogeographic
regions, likely driven by the region’s oceanography. However, there is minimal evidence for
the occurrence of discrete regional evolutionary lineages. This demonstrated lack of genetic
differentiation is consistent with a marine, highly dispersive planktonic phase in both the
amphidromous P. capensis and the marine/estuarine P. peringueyi. Bayesian skyline plots,
mismatch expansions and time since expansion indicate that both species maintained stable
populations during the Last Glacial Maximum (LGM), unlike other southern African
aquatic species.
Description
CITATION: Wood, L. E., De Grave, S. & Daniels, S. R. 2017. Phylogeographic patterning among two codistributed shrimp species (Crustacea: Decapoda: Palaemonidae) reveals high levels of connectivity across biogeographic regions along the South African coast. PLoS ONE, 12(3):e0173356, doi:10.1371/journal.pone.0173356.
The original publication is available at http://journals.plos.org/plosone
The original publication is available at http://journals.plos.org/plosone
Keywords
Decapoda (Crustacea) -- South Africa, Decapoda (Crustacea) -- Phylogeny, Biogeography
Citation
Wood, L. E., De Grave, S. & Daniels, S. R. 2017. Phylogeographic patterning among two codistributed shrimp species (Crustacea: Decapoda: Palaemonidae) reveals high levels of connectivity across biogeographic regions along the South African coast. PLoS ONE, 12(3):e0173356, doi:10.1371/journal.pone.0173356.