| 吴杨平,陈爱华,姚国兴,张志伟,张曹进,张雨.2012.大竹蛏胚胎发生及稚贝发育基本特征.动物学杂志,47(4):74-81. |
| 大竹蛏胚胎发生及稚贝发育基本特征 |
| Basic Characteristics of Embryogenesis and Juvenile Development of Solen grandis |
| 投稿时间：2012-01-31 修订日期：2012-05-16 |
| DOI： |
| 中文关键词: 大竹蛏 胚胎 稚贝 发育 |
| 英文关键词:Solen grandis Embryo Juvenile Development |
| 基金项目:江苏省水产三项工程项目(No.K2008-1);南通市农业创新科技计划项目(No.AL2009001) |
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| 中文摘要: |
| 在人工培育条件下,对大竹蛏(Solen grandis)胚胎发生及稚贝发育进行显微观察,探究大竹蛏胚胎及幼虫发育规律。结果表明,大竹蛏胚胎及幼虫发育过程为:受精卵、卵裂、囊胚期、原肠期、担轮幼虫、D形幼虫、稚贝。在日平均水温为22.4℃时,受精后20~24 h发育成D形幼虫,5~7 d变态为稚贝,38 d稚贝已具备成贝形态,壳长壳高比为2.60。从受精卵到附着所需积温为3 088.79~5 005.19℃·h。稚贝先形成出水管,后形成进水管,最终形成"一管双孔"。壳长与壳高关系式为y=150.37e0.002 7x,x为壳高(μm),y为壳长(μm), R2=0.985 5,P<0.01;壳长与日龄关系式为y=143.38e0.091 6x,x为日龄(d),y为壳长(μm),R2=0.979 5,P<0.01;壳高与日龄关系式为y=33.979 x-15.450,x为日龄(d),y为壳高(μm),R2=0.987 3,P<0.01。 |
| 英文摘要: |
| Under the artificial breeding conditions, the embryogenesis and juvenile development of Solen grandis were observed by light microscopy. The results indicated that the embryonic and larval development of S. grandis included the following stages: zygote, embryo cleavage, blastula, gastrula, trochosphere, d-larvae, and finally juvenile. After 20-24 hours of fertilization, D-larvae appeared at the average daily water temperature of 22.4℃. It took 5-7 days to develop to juvenile, and the juvenile became the adult shellfish after 38 days when the shell length-width ratio was 2.60. The accumulated temperature from zygote to attachment was 3 088.79-5 005.19℃ ·h. After juvenile developed outlet pipe, its intake pipe appeared, and at last the two pipes transformed into one pipe with diplopore. The regression equation of shell length and shell height was y=150.37e0.002 7x,x: shell height (μm), y: shell length (μm), R2=0.985 5, P<0.01. The regression equation of shell length and day old was y=143.38e0.091 6x,x: day old (d), y: shell length (μm),R2=0.979 5,P<0.01. The regression equation of shell height and day old was y=33.979 x-15.450,x: day old (d), y: shell height (μm), R2=0.987 3,P<0.01. |
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