| 引用本文: | 王卫民,AMARARATNE Yakupitiyage.徐家河水库近太湖新银鱼(Neosalanx pseudotaihuensis Zhang)的性腺发育与产卵类型(英文).湖泊科学,1999,11(4):338-345. DOI:10.18307/1999.0409 |
| WANG Weimin,AMARARATNE Yakupitiyage.Ovarian Development and Spawning Pattern of Neosalanx pseudotaihuensis Zhang in Xujiahe Reservoir, Hubei Province. J. Lake Sci.1999,11(4):338-345. DOI:10.18307/1999.0409 |
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| 摘要: |
| 银鱼生产的发展是通过银鱼的引种来实现的,银鱼的引种主要是采取向水体投放受精卵的方式来完成,受精卵又是通过人工繁殖而获得银鱼的人工繁殖不同于常规养殖鱼类,因其一经捕起很快就会死亡而不能进行人工催产因此银鱼人工繁殖的亲本是在银鱼的繁殖季节从天然水体中捕捞而获得,而大量的性成熟好的、可以立即进行人工受精的亲本只能在产卵高峰期才能捕获得到．所以了解并掌握银鱼的性腺发育规律和产卵时期对银鱼的人工繁殖十分重要 1992年4月至1996年5月在湖北省徐家河水库对近太湖新银鱼的性腺发育规律和产卵时期进行了长期的研究,并从1995年5月至1996年4月（银鱼的一生）周年标本中逐月进行了组织切片通过对近太湖新银鱼（Neosalanx pseudotaihuensis）卵细胞的组织学研究表明该鱼为分批产卵类型根据卵巢外部形态和内部组织结构,建议将近太湖新银鱼的卵巢划分为六个阶段；从卵巢每月发育期趋势和卵细胞大小以及卵的成熟度得出近太湖新银鱼的产卵期为3-5月,其中4月中旬至5月中旬为产卵高峰期；根据体长频率分布来看,近太湖新银鱼产完最后一批卵就死亡,因此,它的寿命仅一年从其周年体长和成熟系数分布并结合秋季大捕捞大量样本的检查,得出近太湖新银鱼只有春季产卵群。 |
| 关键词: 近太湖新银鱼 性腺发育 产卵类型 徐家河水库 |
| DOI：10.18307/1999.0409 |
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| Ovarian Development and Spawning Pattern of Neosalanx pseudotaihuensis Zhang in Xujiahe Reservoir, Hubei Province |
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WANG Weimin1, AMARARATNE Yakupitiyage2
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1.Fisheries College of Huazhong Agricultural University, Wuhan 430070, P. R. China;2.Agricultural Aquatic Systems Program, Asian Institute of Technology, Thailand
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| Abstract: |
| Samples were collected monthly from Xujiahe Reservoir from April 1992 to May 1996 and the ovarian development and spawning pattern in Neosalanx pseudotaihuensis Zhang were described. A histological analysis of oocyte development in N. pseudotaihuensis shows that the fish spawns serially. A six-stage maturity scale, based on both external morphology and oocyte composition, was proposed to classify ovarian development in N. pseudotaihuensis. Monthly trends in stages in ovarian development with the size and maturity of oocytes indicate that spawning extended from March to May and peaked between mid-April and mid-May. Histology of ovarian shows that N. pseudotaihuensis produced clutch-es of eggs, which were released at intervals. Data on length-frequencies and gonads shows that N. pseudotaihuensis typically died in a few weeks after last spawning. |
| Key words: Neosalanx pseudotaihuensis ovarian development spawning pattern Xujiahe Reservoir |
