幾種常見淡水魚類早期發(fā)育過程中核酸含量與RNA-DNA變化規(guī)律研究.pdf

1、華中農(nóng)業(yè)大學碩士學位論文幾種常見淡水魚類早期發(fā)育過程中核酸含量與RNADNA變化規(guī)律研究姓名：汲廣東申請學位級別：碩士專業(yè)：水產(chǎn)養(yǎng)殖指導教師：趙振山熊傳喜2002.5.1ABSTRACTThispapermainlystudiestheembryolawofRNA、DNAcomentandRNAfDNAratiochangesduringembryodevelopmentofCyprinuscarpioLinnaeus，Carassiu

2、sauratusMegalobramaamblycephalaYth，PseudobagrusfulvidracoRichardson，MisgurnusanguillicandatusCantorParamisgurnusda6Wan凇SauvageCyprinuscarpioLinnaeus(早)Carassiusauratus(6)，J】I_矗曙∽wz盯anguillicandatusCantor(早)Paramisgurnusd

3、abryanusSauvage(6)，MisgurnusanguillicandatusCantor(6)ParamisgurnusdabryanusSauvage(早)，gynogenesisandandrogenesishaploidofParamisgurnusc缸6巧幗wz齬Sauvage，gynogenesisandandrogenesishaploidofMisgurnusanguillicandamsCantor，with

4、followingresults：1FishesofdifferentspeciesandtypesintheirearlydevelopmentaresimilarinRNA、DNAcontentandRNA／DNAratiochangesofembryo：(1)Fromfertilizedeggtogastrulastage，thetrendofRNAcon把ntgoesdown，butgoesupfxomgastrulastage

5、tohatchingstage(2)Fromfertilizedeggtohatchingstage，thetrendofDNAcomentrises(3)ThegeneraltrendofRNA／DNAratiovarietyofembryofallsfromfertilizedeggtohatchingstageThedescentisverysharpbeforethemiddlegastruiastage，butalleviat

6、ebetweenthemiddiegastmlaandthehgcllingstage2AsfarascmssofCyprinuscarpioLinnaeus、MegalobramaamblycephalaYthandCyprinuscarpioLinnaeus(g)Cauratusasuratus(6)isconcernedRNA、DNAcontentishigherbetweenhatchingandfeedingstagethan

7、inembryodevelopmentalstageTheRNA／DNAratiovarietytrendcontinuesdescending，butalleviatingtooHoweverthegrowthofcellisoneofthereasOusineggdivisionTheabnormityofcytoplasmicnuclearratiowillnotleadtohaploidsyndrome3RNA／DNAratio

8、canbeusedastheindexofproteinsynthesizationduringembryodevelopment4RNA／DNAratiohasclosemlatiomhipwithnutritionstateinembryoThemorenutrition，thehigherratio，celldividesmorequickly；Thefewernutritionthelowerratio，celldividesm