细基江蓠浅海浮筏式一年两茬栽培试验

作者在同一海区进行了一年两茬的细基江蓠浅海浮筏式夹苗栽培,使每亩栽培面积的年产量达309公斤干品,并探讨了一年多茬栽培的技术问题,指出了浅海浮筏式夹苗栽培江蓠的途径。     

COMBINED EFFECTS OF TEMPERATURE, IRRADIANCE AND SALINITY ON GROWTH OF DIATOM SKELETONEMA COSTATUM

ＩＮＴＲＯＤＵＣＴＩＯＮＶａｒｉｏｕｓｃａｕｓａｔｉｖｅｆａｃｔｏｒｓ,ｓｕｃｈａｓｉｎｃｒｅａｓｅｄｓｃｉｅｎｔｉｆｉｃａｗａｒｅｎｅｓｓ,ｕｔｉｌｉｚａｔｉｏｎｏｆｃｏａｓｔａｌｗａｔｅｒｓｆｏｒａｑｕａｃｕｌｔｕｒｅ,ｅｕｔｒｏｐｈｉｃａｔｉｏｎａｎｄｃｙｓｔｔｒａｎｓｐｏｒｔａｔｉｏｎ (Ｈａｌｌｅｇｒｅａｆｆｅｔａｌ.,1 995)ｈａｓｌｅｄｔｏｅｘｔｅｎｓ ｉｖｅｓｔｕｄｉｅｓｏｎｔｈｅｇｌｏｂａｌｉｎｃｒｅａｓｅｉｎＨＡＢ (ＨａｒｍｆｕｌＡｌｇａｌＢｌｏｏｍ) .ＹｅｔｔｈｅＨＡＢｍｅｃｈａｎｉ…     

EFFECTS OF REDUCED SALINITY ON OXYGEN CONSUMPTION AND AMMONIA-N EXCRETION OF CHLAMYS FARRERI

INTRODUCTIONRespirationandexcretionaretwoimportantaspectsofbioenergetics.Themetabolicrateofbi valvesisinfluencedbyanumberofvariables,includingtemperature ,bodysize,oxygentension ,foodconcentration ,reproductivestate ,activitylevelandphysiologicalcondition .Theimpactsoftemperatureontherespirationandexcretionofscallopshadalreadybeenreportedindetail (BayneandNewell,1 983 ;MacDonald ,1 988;MackayandShumway,1 980 ;Shumway ,1 991 ;Yangetal.,1 998) ,whiletheeffectsofsalinityontherespirationan…     

对西格玛（SIGMA）公司1992年产品目录中琼胶和琼胶糖技术数据的比较分析

根据对ＳＩＧＭＡ公司１９９２年产品目录中琼胶和琼胶糖的技术数据进行比较分析的结果认为，可以利用灰分或硫酸根含量这一主要数据作为指标，把它们划分为三个不同的质量等级，即琼胶（灰分３～６％）、纯化琼胶（灰分≤２．０％）和琼胶糖（硫酸根≤０．２０％～≤０．３５％）     

THE EFFECTS OF NITROGEN,PHOSPHORUS,VITAMINS AND TRACE METALS ON THE GROWTH OF THE RED TIDE ORGANISM PROROCENTRUM MICANS

Laboratory culture experiments showed that < 100μmol/L nitrate, amonium or mixture of aminoacids promote the growth of the red tide organism Prorocentrum micans Ehrenb, but that >100μmol/Lof ammonium, or mixture of glycine and glutamate was harmful to growth, and that orthophosphatewas P. micrns’main phosphorous soruce in the ocean. Presence of 80μmol/L EDTA, 0.5 to 1μmol/LFe~(3+), 1.0 to 20.0 μmol/L Mn~(2+) 0.1 to 0.4 μmol/L Co~(2+) in the culture medium could improvethe growth of P. micans. Vitamin B_1 promoted growth, but vitamin B_(12) and biotin did not. Theestimated minimum cell quotaS (q_ο) for nitrogen and phosphorus being 0.74 pmole/cell and 0.045pmole/cell show that phosphorus (more than nitrogen) limits the growth of P. micans in the study area.     

EFFECT OF SALINITY ON EMBRYO AND LARVAL DEVELOPMENT OF THE SOUTHERN BAY SCALLOP ARGOPECTEN IRRADIANS CONCENTRICUS SAY

INTRODUCTIONThes0uthembayscallop,AmpeandiansconamtaSay,isanAmpenirradiansInrnaforsouthamsubepedesdistributingalongthecoastSfromNorthCarolinat0Florida,andisanirnPohantshellfishforfisherieSinthesouthrmU.S.A.,butthere-sonisdmingduetoexanivecapture.ThesouthemsubspedeswasfuStintIDdutalinl99lintoChinabytheInstituteofdrinology,ChineSeAcadeInyofSdenas,andshowedwonderfulprospan,althoughthedeveopmentalbiol0gy,espedllytheeffedofboortantenvirDnmentalfactors(forexamPlesandtyorternPeratwonthis…