| 盐度对暗纹东方鲀胚胎发育的影响 |
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| 引用本文： | 杨州 华洁 陈晰. 盐度对暗纹东方鲀胚胎发育的影响[J]. 齐鲁渔业, 2004, 21(9): 3-5 |
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| 作者姓名： | 杨州 华洁 陈晰 |
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| 作者单位： | 南京师范大学生命科学学院 210097(杨州，华洁)，南京师范大学生命科学学院 210097(陈晰) |
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| 摘 要： | 研究了不同盐度对暗纹东方鲀胚胎发育的影响，盐度为4和8的试验组中受精卵的发育历期、孵化率及初孵仔鱼24小时的存活能力和淡水相比均无显著差异。在盐度12及以上，绝大部分受精卵死亡，仅有极少数个体孵化出膜，且全为畸形并都在24小时内死亡；发育速度随着盐度的升高而变慢。因此，暗纹东方鲀胚胎正常发育所能耐受的盐度范围是0～8。
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| 关 键 词： | 盐度 暗纹东方鲀 胚胎发育 半数孵化时间 孵化率 洄游产卵 |
Effect of Salinity on Embryonic Development of Takifugu obscurus |
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| Yang Zhou et al. Effect of Salinity on Embryonic Development of Takifugu obscurus[J]. Shandong Fisheries, 2004, 21(9): 3-5 |
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| Authors: | Yang Zhou et al |
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| Affiliation: | Yang Zhou et al |
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| Abstract: | The effects of salinity on embryonic development in Takijugu obscurus were studied.There were no significant differences in incubation period(time to 50% hatch),hatch rate as well as viability of newly hatched larvae 24 h post-hatch between freshwater and lower salinities level (4 and 8 ppt). At salinity level 12 ppt or above,the majority of fertilized eggs died,while only a few embryos developed to malformed larvae which died in 24 h post-hatch.In general,developmental velocity decreased with increasing the salinities level.Therefore,the tolerance of Takifugu obscurus embryos to highest salinity level was 8 ppt. |
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| Keywords: | Takifugu obscurus embryonic develop-ment salinities level time to 50% hatch hatch rate |
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