| 摘要: |
| 通过室内繁养真蛸, 详细观察了真蛸胚胎发育和浮游期幼体生长过程, 描述了各时期外部形态和重要器官的发育特征, 采用扫描电镜观察了浮游期幼体的吸盘生长情况。 结果表明, 真蛸成熟卵子长径为(2.4±0.2)mm, 短径为(1.2±0.1)mm。根据 Naef 划分标准, 发育过程分为 20 个时期, 发育期间胚胎经历两次翻转。水温 20.4—23.6℃, 从受精卵到幼体孵化出膜, 经历 25—35d, 初孵幼体全长约为 3.08mm。水温 22.8—25.2℃时, 幼体浮游期约为 28—33d。 |
| 关键词: 真蛸, 胚胎发育, 浮游期幼体, 吸盘 |
| DOI：10.11693/hyhz201102025025 |
| 分类号: |
| 基金项目:国家高技术研究发展计划(863 计划)资助项目, 2010AA10A404 号; 山东省博士基金资助, 2008BS06008 号 |
附件 |
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| EMBRYONIC DEVELOPMENT AND PARALARVAL GROWTH OF OCTOPUS VULGARIS |
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ZHENG Xiao-Dong1, LIU Zhao-Sheng1, ZHAO Na1, AN Wen-Tai1, YANG Shan-Jun2, LIN Xiang-Zhi2
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1.Fisheries College, Ocean University of China;2.Third Institute of Oceanography, State Oceanic Administration
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| Abstract: |
| Octopus vulgaris was reared and bred indoors and its embryonic development and growth of paralarvae were observed. The morphological characteristics of different embryonic stages were described. Sucker growth of paralarvae was illustrated using scanning electronic microscopy. The results showed that mature eggs were (2.4±0.2)mm in length and (1.2±0.1)mm in width. According to Naef (1928), the process of embryonic development was divided into 20 stages, with twice reverses. The development of fertilized eggs required 25—35d before hatching at 20.4—23.6℃. The average length of newly hatched larvae was about 3.08 mm. The paralarval stage kept 28—33d at the hatching temperature of 25.2—22.8℃. |
| Key words: Octopus vulgaris, Embryonic development, Paralarvae, Sucker |
