简介：DNAbarcodingisapowerfulapproachforcharacterizingspeciesoforganisms,especiallythosewithalmostidenticalmorphologicalfeatures,therebyhelpingtotoestablishphylogeneticrelationshipsandrevealevolutionaryhistories.Inthisstudy,wechosea648-bpsegmentofthemitochondrialgene,cytochromecoxidasesubunit1(COI),asastandardbarcoderegiontoestablishphylogeneticrelation-shipsamongbrineshrimp(Artemia)speciesfrommajorhabitatsaroundtheworldandfurtherfocusedonthebiodiversityofArtemiaspeciesinChina,especiallyintheTibetanPlateau.SamplesfromfivemajorsaltlakesoftheTibetanPlateaulocatedataltitudesover4,000mshowedcleardifferencesfromotherArtemiapop-ulationsinChina.Wealsoobservedtwoconsistentaminoacidchanges,153A/Vand183L/F,intheCOIgenebetweenthehighandlowaltitudespeciesinChina.Moreover,indelsintheCOIsequencewereidentifiedincystandadultsamplesuniquetotheCoQenpopulationfromtheTibetanPlateau,demonstratingtheneedforadditionalinvestigationsofthemitochondrialgenomeamongTibetanArtemiapopulations.
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