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| 金乌贼胚胎发育的研究 |
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陈四清1, 刘长琳1, 董迎辉2, 庄志猛1, 贾文平3, 孙建明1, 于广成4, 刘克奉5, 王晓华1
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1.农业部海洋渔业资源可持续利用重点开放实验室 中国水产科学研究院黄海水产研究所， 青岛 266071;2.浙江万里学院生物与环境学院，宁波 315100;3.天津市水产研究所，300221;4.青岛黄岛区水产技术推广站，266500;5.天津市水产研究所
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| 摘要: |
| 对人工孵化条件下金乌贼的胚胎发育进行了观察。刚产出的卵子，均重0.99g/粒（n=100），长轴为11～24mm，短轴为8～15 mm，卵黄如鸡蛋状，梨形，长径5～6mm，短径3～4mm，外包三级卵膜。三级卵膜在胚胎发育过程中经历一个柔软-定形-缩小-膨大的变化过程。受精卵在20～25℃水温下孵化，经过26 d幼体陆续脱膜孵出。根据胚胎发育的外部形态及典型特征将金乌贼胚胎发育过程划分为细胞分裂期、囊胚期、原肠期、器官发育期、出膜期5个典型时期。在胚胎发育过程中，眼的形态变化比较大，且经历一个无色、红色再到黑色的变化过程。 |
| 关键词: 金乌贼 胚胎发育 |
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| 基金项目:国家“863”计划（2010AA10A404）、青岛市科技发展计划（07-4-12-hy）和黄海水产研究所基本科研业务费项目（2010-ts-02）共同资助 |
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| Observations on the embryonic development of Sepia esculenta Hoyle |
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| Abstract: |
| The embryonic development of golden cuttlefish under artificial hatching conditions was observed. The average weight of newly spawned eggs is 0.99 g/particle (n=100), and the major axis is 11~24 mm, the minor axis is 8~15 mm. Egg yolk is egg-shaped, pear-shaped, with long diameter of 5~6 mm and short diameter of 3~4 mm, and is wrapped by three-egg membrane outside. Three egg membrane in the embryonic development processed a soft figuration narrow enlargement change. The fertilized eggs hatched at water temperature of 20~25℃, and the larvae hatched out about after 26d hatching. In terms of the exterior appearance and the typical characteristics, process of embryonic development includes 5 stages: cleavage stage, blastula stage, gastrulae stage, organ development stage and hatching stage. In the embryonic development process, the morphological changes of the eye were relatively large, and it turned from colorless, red into black. KEY WORDSGolden cuttlefish(Sepia esculenta Hoyle)Embryonic development |
| Key words: Golden cuttlefish(Sepia esculenta Hoyle) Embryonic development |