Effects of delayed first feeding on growth and survival of rock bream Oplegnathus fasciatus larvae
文献类型：期刊论文
| 作者 | Shan, Xiujuan1,2; Quan, Hanfeng3; Dou, Shuozeng1 |
| 刊名 | AQUACULTURE
 |
| 出版日期 | 2008-05-12 |
| 卷号 | 277期号:1-2页码:14-23 |
| 关键词 | Oplegnathus Fasciatus Growth Survival Delayed First Feeding Pnr |
| ISSN号 | 0044-8486 |
| DOI | 10.1016/j.aquaculture.2008.01.044 |
| 文献子类 | Article |
| 英文摘要 | The effects of the timing of first feeding (0, 1 and 2 days after yolk exhaustion) and starvation on the point-of-no-return (PNR), survival and growth of laboratory-reared rock bream larvae were studied under controlled conditions. Larvae began to feed exogenously at 3 days after hatching (dah) and reached PNR on 54 h after yolk exhaustion at 22 +/- 1.5 degrees C. Larvae growth was significantly affected by the time of first exogenous feeding. The growth of 0 day delayed first feeding larvae was obviously faster than those of the other delayed first feeding larvae (P<0.05) whether at 7 dab (SL=3.40 mm, SGR=5.7, CV=4.0) or at 15 dah (SL=4.85 mm, SGR=6.1, CV=8.2) with a more uniform size distribution. Survival of 0 day delayed first feeding larvae and I day delayed first feeding larvae was 13% and 8% at the end of experiment, respectively, while no larvae survived up to 7 dah for 2 days delayed first feeding larvae and unfed larvae. Food resulted in a progressive deterioration of the larval digestive system and atrophy of skeletal muscle fibre. The ratios of head length to SL (standard length), body height to SL and eye diameter to SL were the most sensitive morphometric indices to detect the effects of fasting on larval condition. Present results showed that the combination of morphological and morphometric variables could be used to evaluate the nutritional condition of rock bream larvae. In order to avoid the potential mortality and gain better development, survival and growth in industrial production, the rock bream larvae must establish successful first feeding within 2 days after yolk exhaustion. (C) 2008 Elsevier B.V. All rights reserved.; The effects of the timing of first feeding (0, 1 and 2 days after yolk exhaustion) and starvation on the point-of-no-return (PNR), survival and growth of laboratory-reared rock bream larvae were studied under controlled conditions. Larvae began to feed exogenously at 3 days after hatching (dah) and reached PNR on 54 h after yolk exhaustion at 22 +/- 1.5 degrees C. Larvae growth was significantly affected by the time of first exogenous feeding. The growth of 0 day delayed first feeding larvae was obviously faster than those of the other delayed first feeding larvae (P<0.05) whether at 7 dab (SL=3.40 mm, SGR=5.7, CV=4.0) or at 15 dah (SL=4.85 mm, SGR=6.1, CV=8.2) with a more uniform size distribution. Survival of 0 day delayed first feeding larvae and I day delayed first feeding larvae was 13% and 8% at the end of experiment, respectively, while no larvae survived up to 7 dah for 2 days delayed first feeding larvae and unfed larvae. Food resulted in a progressive deterioration of the larval digestive system and atrophy of skeletal muscle fibre. The ratios of head length to SL (standard length), body height to SL and eye diameter to SL were the most sensitive morphometric indices to detect the effects of fasting on larval condition. Present results showed that the combination of morphological and morphometric variables could be used to evaluate the nutritional condition of rock bream larvae. In order to avoid the potential mortality and gain better development, survival and growth in industrial production, the rock bream larvae must establish successful first feeding within 2 days after yolk exhaustion. (C) 2008 Elsevier B.V. All rights reserved. |
| 学科主题 | Fisheries ; Marine & Freshwater Biology |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000255802100003 |
| 公开日期 | 2010-12-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/5369]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China 3.Fisheries Inst Mindong, Ningde 352100, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shan, Xiujuan,Quan, Hanfeng,Dou, Shuozeng. Effects of delayed first feeding on growth and survival of rock bream Oplegnathus fasciatus larvae[J]. AQUACULTURE,2008,277(1-2):14-23. |
| APA | Shan, Xiujuan,Quan, Hanfeng,&Dou, Shuozeng.(2008).Effects of delayed first feeding on growth and survival of rock bream Oplegnathus fasciatus larvae.AQUACULTURE,277(1-2),14-23. |
| MLA | Shan, Xiujuan,et al."Effects of delayed first feeding on growth and survival of rock bream Oplegnathus fasciatus larvae".AQUACULTURE 277.1-2(2008):14-23. |
入库方式： OAI收割
来源：海洋研究所
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