Int. J. Mol. Sci. 2009, 10(12), 5455-5470; https://doi.org/10.3390/ijms10125455
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
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These authors contributed equally to this work.
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Author to whom correspondence should be addressed.
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)
Abstract
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-TextKeywords:
mitochondrial DNA; zooplankton; endemism; dispersal; superspecies; coalescence; Andes; incipient speciation
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).
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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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