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《Freshwater Fisheries》 2009-06
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Observation on the Embryonic Development of Takifugu Obscurus

MO Gen-yong1,HU Geng-dong2,ZHOU Yan-feng2(1.Guangxi Fishery Technical Extension Station,Beihai,Gangxi 536000;2.Freshwater Fisheries Research Center,Key Open Laboratory of Inland Fishery Eco-environment and Resource,Chinese Academy of Fishery Sciences,Wuxi,Jiangsu 214081)  
This paper describe the morphological characters on different embrynoic development phases of Takifugu Obscurus in detail.The result showed:The embryo of Takifugu Obscurus obtained from artificial fertilization was round,yellowish and transparent.The embryo was 1.118~1.274 mm in diameter.When water temperature was(21±0.5)℃,131 hours and 15 mintiues was needed to hatch the embryos,which were described as follows:fertilized egg at 0 minute,2-cell stage at 190 minutes after fertilization,early apparatus stage at 40 hours and 30 minutes post feitilized,and larvae at 131 hours and 15 minutes after fertilization.Newly hatched larvae have a total length of(2.550± 0.675) mm,with about 26~28 myomeres,yolksac was big and compressed,the long diameter was(1.014±0.075)mm,and the shortdiameter was(0.904±0.095)mm.The process of embryonic development could be divided into 33 stages.
【Fund】: 国家科技支撑计划(2006BAD03B09)
【CateGory Index】: S917.4
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