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1.
美国红鱼繁殖习性及诱导产卵技术初探 总被引:2,自引:0,他引:2
美国红鱼(Sciaenops ocellatus)亦称眼斑拟石首鱼,属鲈形目,石首鱼科,拟石首鱼属。原产于美国大西洋沿岸及墨西哥湾。此鱼肉质鲜美,生长迅速,是美国、台湾等地重要的养殖鱼种。1991年7月由国家海洋局第一海洋研究所从美国引进,1995年9月自然性成熟、产卵,在我国首次育出第一代红鱼幼苗。1996年、1997年和1998年连续3a,通过控制红鱼的饲养水温和日光照周期,成功地使其在2~9月份保持连续产卵。关于美国红鱼的繁殖习性和诱导产卵技术的研究,目前国内尚未见报道。1 材料和方法1 … 相似文献
2.
Taxonomy and ultrastructure of five species of Tetraselmis (Prasinophyceae) isolated from China seas
INTRODUCTIONThegenusTetraselmisStein ( 1 878)isagreenflagellates (Prasinophyceae)thatconsistsofmanymarineaswellasafewfreshwaterspecies .Marinespeciesoftenoccurindensepopula tionscausingbloomsintidepoolsorbays ,therebybeingimportanttoanunderstandingofthedynam… 相似文献
3.
1 .IntroductionTheappraisalofagooddesignforaverylargefloatingstructure(VLFS)thatwillserveinaspeci fiedoceanarearequiresthatthestructuralsystembeeconomicallydesigned ,therequirementsforitsfunctionbesatisfiedandthestructurekeepsstableinitswholeserviceperio… 相似文献
4.
Geochemistry of trace elements and Sr-Nd isotopes of foraminifera shell from the Okinawa Trough 总被引:1,自引:0,他引:1
INTRODUCTIONProvenanceofmarinesedimentshasalwaysbeenafocusedprobleminmarinesedimentge ology.Recognitionofendmembersandestimationoftheirrelativeproportionsfrommixedsedimentshavebeenakeycontentinthestudyofprovenance .Forthisaim ,itisnecessarytoselectendme… 相似文献
5.
Remote sensing composite information of Nansha reef`s closed atoll and model of its spatial structur
《海洋学报(英文版)》1997,(2)
BasedontheNanshalslands,clttselatollconoeption-rentotesenaingsystetninPutI,throughthesolutionoftheitfotmationfunctionvalueandisostaticvalueofclaaxlandquasi-closalatoll,andbyusingtopologicalandysisongrowthformandthecompaiteremotesensingquantbationdataastheculatingcefficients,thefaturevevectorsystemanditsmathematicalmodeloftwokindsofatollarebuilt,andthemultivariateanalysisismadewithsomeexamples. 相似文献
6.
INTRODUCTIONBecausesalinityisanessentialfactorinoceanographicstudies ,andanimportantparameterinsaltchemicalindustriesandmaricultureaswellasecosystem ,thesalinitydefinitionanditsmeasurementarebeingcontinuouslystudied .Researchershavebeenconstantlyworking… 相似文献
7.
Measurement of nuclides of uranium and thorium series of disequilibrium using γ-spectroscopy 总被引:3,自引:0,他引:3
INTRODUCTIONTheradionuclidesofnaturaluraniumandthoriumseriescanbeusedtotracemarinepro cessofvarioustemporalandspatialscaleandpropertiesthatprovideplentifulinformationaboutphysics,chemistry ,geoscienceandbiologyofoceanbecausetheyhavedifferentchemicalpro… 相似文献
8.
Outer frequency spectrum of sea waves and its equilibrium range 总被引:3,自引:0,他引:3
Thepresentpaperdefinesthegeneralizedapparentenergydistributionandderivestheanalvticalformoftheso-calledgeneralizedouterfrequencyspectrumornthorderapparentfrequencyspectrum.Itisshownthatthegen-eralizedouterfrequencyspectrumhasanequilibriumrangewithanexponent(n+3)andtheupperlimitoftheex-ponentis-3.TheresultsofthispaperareuniversalandareapplicableforanyotherwavephenomenaiftheraytheoryofwavesandtheLonguet-Higgins,linearrandomwavemodelareexactenoughfortheirdescziption. 相似文献
9.
High-resolutionsub-bottomprofilerhasrevededsedimentalstrataandentironmentsintheeuttmp.ofthel3ohaiSeasincetheltatePleistocene.Atccordingtothecharactersofacauseicreflectionandseismictstrattlgmphicprinci-ple,someclt.ificationoftypicalacousticreflectionisnzadeouttndwiUbefavourableforinterpretationandrecognbationofaoousticprofilesinthisarea 相似文献
10.
1 .IntroductionLectotypeoptimizationofoffshoreplatformsisofparticularimportanceintheconceptdesignstagebecausenotonlyitdeterminestheoverallqualityoftheoffshoreplatformsystem ,andatthesametime ,themajoropportunitiesforcostsavingsoccurinthisoptimizationpro… 相似文献
11.
Li Naisheng 《海洋学报(英文版)》1994,13(2):285-296
NotesTheOceanDrillingProgram(ODP)mNowadays,withpopulationincreasingandnaturalresourcesforhumanbeingsdecreasing,scientistsmust... 相似文献
12.
1 .IntroductionWhenatankerisberthedormooredtoanoceanplatform ,whichisusuallyinopenseas,thetankerwillsufferforcesgeneratedbywaves ,windandcurrent.Inmostofthepreviousstudies ,thein fluenceofcurrentorthecombinedwaveandcurrentwasconsideredtobethemainobject.Ins… 相似文献
13.
Analysis of the dynamic characteristics and stochastic simulation on variations of beach volumes 总被引:6,自引:1,他引:6
Chen Zishen 《海洋学报(英文版)》1995,14(3):393-403
Analysisofthedynamiccharacteristicsandstochasticsimulationonvariationsofbeachvolumes¥ChenZishen(InstituteofEstuarineandCoasta... 相似文献
14.
Interfacial properties of oil spill dispersants and their effects on dispersion effectivenessInterfacialpropertiesofoilspilld... 相似文献
15.
INTRODUCTIONThelargediametercylindricalstructureisoftenusedasthewharfandthebreakwaterstructureofharbor.Sinceittakessometimetofillmaterialintothecylinderafterthecylindershellissunkentotheseabed ,thestabilityofthecylinderbecomescontrolconditionforthesaf… 相似文献
16.
1 .IntroductionTomeasurethereflectionofincidentwavesproducedbyaphysicalmodelinawaveflumeisacommonproblemwithphysicaltestsofwaveactiononcoastalstructures .Wavesgeneratedbythewave makerpropagateforwardinthewaveflumeandarereflectedbythephysicalmodel,andthe… 相似文献
17.
Studies on morphocytology of Planktoniella and correction of nomenclature of Valdiviella formosa (Sc
《海洋学报(英文版)》1997,(2)
BasedonthemorphocytologicalstudiesonPlanktoniella,twospeciesofthegenus,p.solSchuttandP.formosa(QianetWang)arerecordedinChina'sseas.TherenamingofthelatterspeciesisbasedonacarefulstudyonValdivielllaformosa(SchimperexKarsten)Karsten. 相似文献
18.
INTRODUCTIONCryptomonasisunicellularbiflagellatewhichisacommongenusofCryptophyta .Thecellsareusuallystronglycompressedlaterally .ThereareoneortwolargeChloroplaststhatcontainchlorophylla ,c ,somecharacteristiccarotenoidsandphycobilinpigments (Huetal.,1 997;Wei… 相似文献
19.
Chemistryofmarineresources-XIX.Themoleculedesignandsynthesisofcrow-linktypealkydresinanditsenrichmentbehaviourforpotassiumion... 相似文献
20.
Theresearchontheremotesensing'sinformationtreemodeloftheNanshacoralisletsandreef'sspatialstructure¥LiuBaoyin;WangYanfengandHa... 相似文献