提取牡蛎Raising Oystersdoc.docx

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提取牡蛎RaisingOystersdoc

提取牡蛎(RaisingOysters)

  intheoysterswereraisedinmuchthesamewayasdirtfarmersraisedtomatoes-bytransplantingthem.first,farmersselectedtheoysterbed,clearedthebottomofoldshellsandotherdebris,thenscatteredcleanshellsabout.next,they"planted"fertilizedoystereggs,whichwithintwoorthreeweekshatchedintolarvae.

  thelarvaedrifteduntiltheyattachedthemselvestothecleanshellsonthebottom.theretheyremainedandintimegrewintobabyoysterscalledseedorspat.thespatgrewlargerbydrawinginseawaterfromwhichtheyderivedmicroscopicparticlesoffood.beforelong,farmersgatheredthebabyoysters,transplantedthemoncemoreintoanotherbodyofwatertofattenthemup.

  untilrecentlythesupplyofwildoystersandthosecrudelyfarmedweremorethanenoughtosatisfypeople'sneeds.buttodaythedelectableseafoodisnolongeravailableinabundance.theproblemhasbecomesoseriousthatsomeoysterbedshavevanishedentirely.

  fortunately,asfarbackastheearly1900'smarinebiologistsrealizedthatifnewmeasureswerenottaken,oysterswouldbecomeextinctoratbestaluxuryfood.sotheysetupwell-equippedhatcheriesandwenttowork.buttheydidnothavetheproperequipmentortheskilltohandletheeggs.theydidnotknowwhen,what,andhowtofeedthelarvae.

  andtheyknewlittleaboutthepredatorsthatattackandeatbabyoystersbythemillions.theyfailed,buttheydoggedlykeptatit.finally,inthe1940'sasignificantbreakthroughwasmade.

  themarinebiologistsdiscoveredthatbyraisingthetemperatureofthewater,theycouldinduceoysterstospawnnotonlyinthesummerbutalsointhefall,winter,andspring.latertheydevelopedatechniqueforfeedingthelarvaeandrearingthemtospat.

  goingstillfurther,theysucceededinbreedingnewstrainsthatwereresistanttodiseases,grewfasterandlarger,andflourishedinwaterofdifferentsalinitiesandtemperatures.inaddition,thecultivatedoysterstastedbetter!

  intheoysterswereraisedinmuchthesamewayasdirtfarmersraisedtomatoes-bytransplantingthem.first,farmersselectedtheoysterbed,clearedthebottomofoldshellsandotherdebris,thenscatteredcleanshellsabout.next,they"planted"fertilizedoystereggs,whichwithintwoorthreeweekshatchedintolarvae.

  thelarvaedrifteduntiltheyattachedthemselvestothecleanshellsonthebottom.theretheyremainedandintimegrewintobabyoysterscalledseedorspat.thespatgrewlargerbydrawinginseawaterfromwhichtheyderivedmicroscopicparticlesoffood.beforelong,farmersgatheredthebabyoysters,transplantedthemoncemoreintoanotherbodyofwatertofattenthemup.

  untilrecentlythesupplyofwildoystersandthosecrudelyfarmedweremorethanenoughtosatisfypeople'sneeds.buttodaythedelectableseafoodisnolongeravailableinabundance.theproblemhasbecomesoseriousthatsomeoysterbedshavevanishedentirely.

  fortunately,asfarbackastheearly1900'smarinebiologistsrealizedthatifnewmeasureswerenottaken,oysterswouldbecomeextinctoratbestaluxuryfood.sotheysetupwell-equippedhatcheriesandwenttowork.buttheydidnothavetheproperequipmentortheskilltohandletheeggs.theydidnotknowwhen,what,andhowtofeedthelarvae.

  andtheyknewlittleaboutthepredatorsthatattackandeatbabyoystersbythemillions.theyfailed,buttheydoggedlykeptatit.finally,inthe1940'sasignificantbreakthroughwasmade.

  themarinebiologistsdiscoveredthatbyraisingthetemperatureofthewater,theycouldinduceoysterstospawnnotonlyinthesummerbutalsointhefall,winter,andspring.latertheydevelopedatechniqueforfeedingthelarvaeandrearingthemtospat.

  goingstillfurther,theysucceededinbreedingnewstrainsthatwereresistanttodiseases,grewfasterandlarger,andflourishedinwaterofdifferentsalinitiesandtemperatures.inaddition,thecultivatedoysterstastedbetter!

  intheoysterswereraisedinmuchthesamewayasdirtfarmersraisedtomatoes-bytransplantingthem.first,farmersselectedtheoysterbed,clearedthebottomofoldshellsandotherdebris,thenscatteredcleanshellsabout.next,they"planted"fertilizedoystereggs,whichwithintwoorthreeweekshatchedintolarvae.

  thelarvaedrifteduntiltheyattachedthemselvestothecleanshellsonthebottom.theretheyremainedandintimegrewintobabyoysterscalledseedorspat.thespatgrewlargerbydrawinginseawaterfromwhichtheyderivedmicroscopicparticlesoffood.beforelong,farmersgatheredthebabyoysters,transplantedthemoncemoreintoanotherbodyofwatertofattenthemup.

  untilrecentlythesupplyofwildoystersandthosecrudelyfarmedweremorethanenoughtosatisfypeople'sneeds.buttodaythedelectableseafoodisnolongeravailableinabundance.theproblemhasbecomesoseriousthatsomeoysterbedshavevanishedentirely.

  fortunately,asfarbackastheearly1900'smarinebiologistsrealizedthatifnewmeasureswerenottaken,oysterswouldbecomeextinctoratbestaluxuryfood.sotheysetupwell-equippedhatcheriesandwenttowork.buttheydidnothavetheproperequipmentortheskilltohandletheeggs.theydidnotknowwhen,what,andhowtofeedthelarvae.

  andtheyknewlittleaboutthepredatorsthatattackandeatbabyoystersbythemillions.theyfailed,buttheydoggedlykeptatit.finally,inthe1940'sasignificantbreakthroughwasmade.

  themarinebiologistsdiscoveredthatbyraisingthetemperatureofthewater,theycouldinduceoysterstospawnnotonlyinthesummerbutalsointhefall,winter,andspring.latertheydevelopedatechniqueforfeedingthelarvaeandrearingthemtospat.

  goingstillfurther,theysucceededinbreedingnewstrainsthatwereresistanttodiseases,grewfasterandlarger,andflourishedinwaterofdifferentsalinitiesandtemperatures.inaddition,thecultivatedoysterstastedbetter!

  intheoysterswereraisedinmuchthesamewayasdirtfarmersraisedtomatoes-bytransplantingthem.first,farmersselectedtheoysterbed,clearedthebottomofoldshellsandotherdebris,thenscatteredcleanshellsabout.next,they"planted"fertilizedoystereggs,whichwithintwoorthreeweekshatchedintolarvae.

  thelarvaedrifteduntiltheyattachedthemselvestothecleanshellsonthebottom.theretheyremainedandintimegrewintobabyoysterscalledseedorspat.thespatgrewlargerbydrawinginseawaterfromwhichtheyderivedmicroscopicparticlesoffood.beforelong,farmersgatheredthebabyoysters,transplantedthemoncemoreintoanotherbodyofwatertofattenthemup.

  untilrecentlythesupplyofwildoystersandthosecrudelyfarmedweremorethanenoughtosatisfypeople'sneeds.buttodaythedelectableseafoodisnolongeravailableinabundance.theproblemhasbecomesoseriousthatsomeoysterbedshavevanishedentirely.

  fortunately,asfarbackastheearly1900'smarinebiologistsrealizedthatifnewmeasureswerenottaken,oysterswouldbecomeextinctoratbestaluxuryfood.sotheysetupwell-equippedhatcheriesandwenttowork.buttheydidnothavetheproperequipmentortheskilltohandletheeggs.theydidnotknowwhen,what,andhowtofeedthelarvae.

  andtheyknewlittleaboutthepredatorsthatattackandeatbabyoystersbythemillions.theyfailed,buttheydoggedlykeptatit.finally,inthe1940'sasignificantbreakthroughwasmade.

  themarinebiologistsdiscoveredthatbyraisingthetemperatureofthewater,theycouldinduceoysterstospawnnotonlyinthesummerbutalsointhefall,winter,andspring.latertheydevelopedatechniqueforfeedingthelarvaeandrearingthemtospat.

  goingstillfurther,theysucceededinbreedingnewstrainsthatwereresistanttodiseases,grewfasterandlarger,andflourishedinwaterofdifferentsalinitiesandtemperatures.inaddition,thecultivatedoysterstastedbetter!

  intheoysterswereraisedinmuchthesamewayasdirtfarmersraisedtomatoes-bytransplantingthem.first,farmersselectedtheoysterbed,clearedthebottomofoldshellsandotherdebris,thenscatteredcleanshellsabout.next,they"planted"fertilizedoystereggs,whichwithintwoorthreeweekshatchedintolarvae.

  thelarvaedrifteduntiltheyattachedthemselvestothecleanshellsonthebottom.theretheyremainedandintimegrewintobabyoysterscalledseedorspat.thespatgrewlargerbydrawinginseawaterfromwhichtheyderivedmicroscopicparticlesoffood.beforelong,farmersgatheredthebabyoysters,transplantedthemoncemoreintoanotherbodyofwatertofattenthemup.

  untilrecentlythesupplyofwildoystersandthosecrudelyfarmedweremorethanenoughtosatisfypeople'sneeds.buttodaythedelectableseafoodisnolongeravailableinabundance.theproblemhasbecomesoseriousthatsomeoysterbedshavevanishedentirely.

  fortunately,asfarbackastheearly1900'smarinebiologistsrealizedthatifnewmeasureswerenottaken,oysterswouldbecomeextinctoratbestaluxuryfood.sotheysetupwell-equippedhatcheriesandwenttowork.buttheydidnothavetheproperequipmentortheskilltohandletheeggs.theydidnotknowwhen,what,andhowtofeedthelarvae.

  andtheyknewlittleaboutthepredatorsthatattackandeatbabyoystersbythemillions.theyfailed,buttheydoggedlykeptatit.finally,inthe1940'sasignificantbreakthroughwasmade.

  themarinebiologistsdiscoveredthatbyraisingthetemperatureofthewater,theycouldinduceoysterstospawnnotonlyinthesummerbutalsointhefall,winter,andspring.latertheydevelopedatechn

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