全文预览

锦绣龙虾人工繁殖和胚胎发育的研究.pdf

上传者:似水流年 |  格式:pdf  |  页数:10 |  大小:0KB

文档介绍
gtheunilateraleyestalk.Duringthefirstandsecondbrooding,theovarianmaturationtimeoftheeyestalk-ablatedfemaleswasshortenedby17.7dand11.3d,paringwiththecontrolgroup.Thefemalesspawn1-10dayspostmating.Duringthefirstandsec-ondbrood.thenumbersofeggsperfemaleproducedwereaverageof40.34×10and32.97×10withmeanhatchrates0f77.29%and77.72%,andaverage31.70X10and25.essfullyhatched,respectively.Theembryosdevelopedfor22—23datwatertemperatureof29.2℃andsalinityof30.Theprocessofembryonicde-velopmentcouldbedividedintoelevenstages:fertilizedeggs,cleavagestage,blastulastage,gastrulastage,egg-naupliusstage,embryowith7pairsofappendages,embryowith9pairsofappendages,embryowith11pairsofappendages,poundeyepigmentsformed,pre—hatchingstageandhatchingstage.Keywords:Panulirusornatus;Artificialpropagation;Embryonicdevelopment

收藏

分享

举报
下载此文档