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Open AccessArticle

Sharp Phylogeographic Breaks and Patterns of Genealogical Concordance in the Brine Shrimp Artemia franciscana

1
Department of Genetics, Development & Molecular Biology, School of Biology, Aristotle University of Thessaloniki, 541 24, Greece
2
Institute of Agrobiotechnology, Centre for Research and Technology, Thermi, 570 01, Thessaloniki, Greece
*
Author to whom correspondence should be addressed.
#
These authors contributed equally to this work.
Int. J. Mol. Sci. 2009, 10(12), 5455-5470; https://doi.org/10.3390/ijms10125455
Received: 1 December 2009 / Revised: 16 December 2009 / Accepted: 17 December 2009 / Published: 18 December 2009
(This article belongs to the Special Issue Cladistic Analysis and Molecular Evolution)
Genealogical concordance is a critical overlay of all phylogenetic analyses, irrespective of taxonomic level. To assess such patterns of congruence we have compiled and derived sequence data for two mitochondrial (16S rRNA, COI) and two nuclear (ITS1, p26) markers in 14 American populations of the hypersaline branchiopod Artemia franciscana. Cladistic analysis revealed three reciprocally monophyletic mitochondrial clades. For nuclear DNA, incomplete lineage sorting was evident presumably as a result of slower coalescence or male-mediated dispersal. Our findings capture the genealogical interval between gene splitting and population divergence. In this sense, strong indications are provided in favour of a superspecies status and ongoing speciation in A. franciscana. View Full-Text
Keywords: mitochondrial DNA; zooplankton; endemism; dispersal; superspecies; coalescence; Andes; incipient speciation mitochondrial DNA; zooplankton; endemism; dispersal; superspecies; coalescence; Andes; incipient speciation
MDPI and ACS Style

Maniatsi, S.; Kappas, I.; Baxevanis, A.D.; Farmaki, T.; Abatzopoulos, T.J. Sharp Phylogeographic Breaks and Patterns of Genealogical Concordance in the Brine Shrimp Artemia franciscana. Int. J. Mol. Sci. 2009, 10, 5455-5470.

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