| 水温对黑脊倒刺鲃胚胎发育的影响及其胚后发育观察 |
| Effects of Water Temperature on Embryonic Development and Observation on Postembryonic Development of Spinibarbus caldwelli |
| 投稿时间：2009-12-28 |
| DOI： |
| 中文关键词:黑脊倒刺鲍 水温 胚胎发育 胚后发育 |
| 英文关键词:Spinibarbus caldwelli Water temperature Embryonic development Postembryonic development |
| 基金项目: |
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| 摘要点击次数: 1977 |
| 全文下载次数: 1959 |
| 中文摘要: |
| 研究水温对黑脊倒刺鲃胚胎发育的影响，并对其胚后发育进行观察。结果表明，在水温22—32％时，胚胎均能孵化出膜，孵化时间为70．33～35．83h，水温与孵化速率成极显著的直线相关关系。孵化率与水温存在极显著的二次曲线相关关系，以孵化率70％和80％分别作为胚胎发育的合适水温范围和最适水温范围的上下限标准，由孵化率与水温的回归曲线方程可以推算出，合适水温范围和最适水温范围分别为24．3～29．0℃和25．6—27．8℃；以孵化率50％作为判断胚胎发育适宜温度范围的标准，由回归曲线可以推算出，黑脊倒刺鲃胚胎发育的适宜水温范围为22．8～30．5℃，通过曲线求导数计算极值的方法求得水温26．7℃时，孵化率达最大值。在水温24．2—33．0℃时，5日龄仔鱼进入混合营养期，8日龄进入晚期仔鱼，21日龄进入稚鱼期；从初孵仔鱼到28日龄，全长与日龄成直线相关，日平均生长0．6mm。人工催产应选择连续晴天和水温保持在24．3～29．0℃时进行。 |
| 英文摘要: |
| The effects of water temperature on embryonic development of Spinibarbus caldwelli were studied and postembryonic development was observed. The results showed that：as water temperature increase from 22℃ to 32v, the embryonic development rate increased linearly and the embryonic development period decreased rapidly from 70.33 h to 35.83 h. There was a significant square curve correlation between hatching rate and water temperature. The suitable and optimum water temperature range was estimated from this relationship to be 24.3℃ to 29.0℃ and 25.6℃ to 27.8℃ based on a hatching rate up to 70% and 80%, respectively. The highest hatching rate would be obtained at 26.7℃. While water temperature varied from 24.2℃ to 33.0~C ,the larvae reached the mixed feeding stage at 5th day after hatching （ DAH）, developed into post-larva stage at 8th DAH and into juvenile stage at 21st DAH, From hatching to the 28th DAH, the larva grew linearly and the daily increment of total length was 0. 6 mm. |
| 黄洪贵.2009.水温对黑脊倒刺鲃胚胎发育的影响及其胚后发育观察[J].水生态学杂志,30(4):84-88. |
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