基于線粒體ND2，ND3基因序列的鵯科鳥類系統(tǒng)發(fā)育.pdf

1、沈陽師范大學(xué)碩士學(xué)位論文基于線粒體ND2，ND3基因序列的鵯科鳥類系統(tǒng)發(fā)育姓名：董強申請學(xué)位級別：碩士專業(yè)：細(xì)胞生物學(xué)指導(dǎo)教師：雷富民李丕鵬20100301IIAphylogeicanalysisofbulbuls(Pycnonotidae)basedonND2ND3genesequencesAbstractBulbulslivinginthefestsomeactivitiesinbushesmanyspeciesinthegarde

2、nwidelydistributedinsubsaharanAfricaMadagarIndianOceanislsthedleEastIndiasoutheastAsia.Thereareabout130speciesclassifiedinto20genera.Thetraditionaltaxonomywereonlyaccdingtomphologicbehavialactershowevertheirmphologicbeha

3、vialactersaresocomplicatedthatwecouldnotdifferentiatesomespecieseasily.Therefewehadsometaxonomicresearchbymolecularmeansindertosupplytraditionaltaxonomy.ByemployingtwokindsofmolecularmarkerofmitochondrialDNAND2ND3genethe

4、sequencesofsomespeciesfromPycnonotidaewerecompared.PhylogeictreesofMLBayesianmethodsbasedonND2geneND3genecombinedgenedatawerebuiltrespectively.Weanalysedtheirphylogeicrelationshipdefecatethemistinessquestionsabouttraditi

5、onalclassifyinPycnonotidae.AftercomparinganalyzingtheND2ND3genesequencesofthespeciesfromPycnonotidaetheresultsshowedthatthevariablesitesofND2ND3genesequencewere620205parsimonyinfmtionsiteswere567191respectively.ND2ND3gen

6、ecanbeusedasakindofmolecularmarkersbutwesuggestedyoudbetteremployanucleargene.Thetreecandividedintofourmainbranch:firstabranchwithPycnonotusSpizixosmainlyfromAsia；SecondabranchwithAlophoixusHypsipetes(includingattachedto

7、itsfourgenera:IxosIsleHemixosMicroscelis)；ThethirdisthespeciesfromAfricaThelastoneisfromMadagartoAfrica.InthispaperwecomparesthetwokindsofmolecularmarkerscombineddatatreetheAfricanspeciesofPycnonotusmaybefromAsiaspecies.