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

被引:24
|
作者
Maniatsi, Stefania [1 ]
Kappas, Ilias [1 ]
Baxevanis, Athanasios D. [1 ]
Farmaki, Theodora [2 ]
Abatzopoulos, Theodore J. [1 ]
机构
[1] Aristotle Univ Thessaloniki, Dept Genet Dev & Mol Biol, Sch Biol, Thessaloniki 54124, Greece
[2] Ctr Res & Technol, Inst Agrobiotechnol, Thessaloniki 57001, Greece
关键词
mitochondrial DNA; zooplankton; endemism; dispersal; superspecies; coalescence; Andes; incipient speciation; GENE FLOW; MITOCHONDRIAL; CRUSTACEA; POPULATIONS; DISPERSAL; NUCLEAR; DIFFERENTIATION; POLYMORPHISM; SPECIATION; ANOSTRACA;
D O I
10.3390/ijms10125455
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
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.
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页码:5455 / 5470
页数:16
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