食蚊鱼卵子发生的组织学观察

20087()July2008253JournalofChongqingNormalUniversity(NaturalScience)Vol.25No.33,,(;;,400715):61,,2,,,,,,3,,,,,4,,,,5,,,,6,,:;;;;:Q959.475:A:167226693(2008)0320008205(Gambusiaaffinis),,[1],,,[223],,,,12002510,,21.040.0mm,0.3511.250g,46Bouin,,68m,H.E,,Nikon[4]2,5,,62.11,6.79.3m,45.3m,,,,(I21)2.22,,20.073.3m,13.334.7m,,,,2,,,,,212,,1;,2026.7m,1624m,1.32.7m(I22)2,,,,1,,37.369.3m,17.334.7m,410.7m(I23)3:2008201210:(No.200227492):(19692),,,:,Email:[e-mail]2,,,,,,,42.773.3m,17.333.3m,5.36.7m,5.342.7m(I24)2,2,,2,,,,,,,(I210)2.33,,82.7533.3m,21.380m,6.78m3,,,,82.7253.3m,21.380m,6.78m(I-5)3,,,,,,106.7266.7m,66.780m(I-6)3,,,,245.3533.3m,53.374.7m3,,,;,,,46,,,,,,,,(I-11,12)2.44,,,666.71226.7m(I-7)4,,,(I-13)2.55,,693.31493.3m(I-8)5,,,,,2.66,,(I-9),,,,,,,,,33.13,[5,6][7][2],,[3],,[8],[9],[10],93,:1.1,3202.2,3203.2,3204.2,()(),3205.3,3206.3,1607.4,(N),(),3208.5,329.6,3210.2,80011.3,80012.3,,32001()[3],,,1.5mm,25mm,,,,390450m,2,,,,,[2]23,,[11],[7,12213],3.3:1);2)2,,;3),,,,,,,,,,;,,,:[1],.[M].:,1987.[2],.[J].,2000,21(4):2692274.[3],,.[J].(),1996,42(4):4882493.[4].[M].:,1981.[5],.[J].,1996,20(1):9214.[6],.[J].,1995,16(2):1662172.[7],,,.[J].,1998,44(3):3142321.[8],,.[J].,2001,19(1):35243.[9],.[J].,2000,21(5):4192421.[10],U..[J].,1996,42(4):3552360.[11],,,.[J].,2001,25(2):972102.[12]HUBBARDJ.TheYolkNucleusinCymatogasterag2gregatusGibbons[J].ProcAmPhilSoc,1894,33:74283.[13]CHOPRAHC.MorphologicalandHistochemicalStudyofOocytesofFishBarbusticto(Pumtius),withParticularReferencetoLipids[J].ResBullPunjabUniv,1958,152:2112221.113,:HistologicalStudiesoftheOogenesisofGambusiaaffinisWANGZhi2jian,LUOHong,ZHANGYao2guang(SchoolofLifeScience;KeyLaboratoryofAquaticScienceofChongqing;KeyLaboratoryofMinistryofEducationofEco2environmentsinThreeGorgesReservoirRegion,SouthwestUniversity,Chongqing400715,China)Abstract:TheoogenesisofGambusiaaffinisisdividedinto6phases.Inthefirstphase,theoogoniumhaslittlecytoplasmandbiggernuclear2cytoplasmicratio.Inphase2,thevolumeofoocytesincreasesrapidlywhilethenuclear2cytoplasmicratiodecreasesobviously,thecytoplasmisinastrongbasophiliastate,andthefollicularcellstartstoappear.Tothelatestageofthisphase,yolknucleusandmimeticgrowthcirclewhichbothwouldberelatetotheformationofyolkmattersappears.Inthethirdphase,thebasophiliaoftheoo2cytesgetsweaker,andyolkbubblewhichthecytoplasmisgraduallyfilledwithisfirstseenintheinneredgeofthemembrane.Follicu2larcellswhichpileupasatougueinthegranularlayercometoinsertintoeggmembrane,andmakethezonarediataundulate.Thiskindiscalledinlayed2folicle.Inphase4,theincreaseofoocytevolumegetssooner,theyolkbubbledisappears,andcytoplasmisgraduallyfilledwithyolkandwithnucleusmovingtoage.Inphase5,thefollicularcellsfalloffandtheeggsmaturewithcharactersofverythinmembraneandwell2distributedyolk.Inphase6,unfertilizedeggsandfollicularcellsdegenerategraduallyandareabsorpedatlast.Keywords:Gambusiaaffinis;oogenesis;histology;inlayed2follicle;sourceandaccumulationofyolk()(7)[3]LEECY,HEY,TANGGC.ANoteonParallelMachineSchedulingwithNon2simultaneousMachineAvailableTime[J].DiscApplMath,2000,100:1332135.[4],.[J].(),2005,32(3):2582263.[5],,.Moore2Hodgson[J].(),2007,24(3):427.PrimalThresholdAlgorithmsofNon2SimultaneousMachineAvailableTimesLIMeng1,TANGWan2mei1,TANGGuo2chun2(1.CollegeofMathematicsandComputerScience,ChongqingNormalUniversity,Chongqing400047;2.InstituteofManagementEngineering,ShanghaiSecondPolytechnicUniversity,Shanghai200041,China)Abstract:Inthispaperthecaseofmmachineswithnon2simultaneousmachineavailabletimesisinvestigated.Asageneralationoftheclassicalparallelmachineschedulingproblem,eachmachineisavailableonlyatamachinedependentreleasetime.Fortheproblemofminimizingthemakespan,thekindofalgorthmwhichiscalledPrimal2ThresholdPTm(),whereisanoptionalparameter,ispro2posed.ThenweprovethatiftheAlgorithmwillbecontrolledbynormalstoppingrule,wecanobtainthatCPTm()COPT1+.TheAlgo2rithmwillbecontrolledbyabnormalstoppingrule.Wecanalsogetthesameresult.Moreover,itisprovedthatifequalsotom-1m,theperformanceratioofPrimal2ThresholdAlgorithmPTmm-1mis1+m-1m,whichistight.ItextendsthecaseoftwomachinesonPrimal2ThresholdAlgorithms.Keywords:scheduling;performanceratio;machineavailableti()21JournalofChongqingNormalUniversity(NaturalScience)Vol.25No.3