Behavioral responses of tilapia (Oreochromis niloticus) to acute fluctuations in dissolved oxygen levels as monitored by computer vision
文献类型：期刊论文
| 作者 | Xu, Jianyu; Liu, Ying ; Cui, Shaorong; Miao, Xiangwen
|
| 刊名 | AQUACULTURAL ENGINEERING
 |
| 出版日期 | 2006-10-01 |
| 卷号 | 35期号:3页码:207-217 |
| 关键词 | Computer Vision Fish Behavior Hypoxia Activity Aquaculture Tilapia |
| ISSN号 | 0144-8609 |
| DOI | 10.1016/j.aquaeng.2006.02.004 |
| 文献子类 | Article |
| 英文摘要 | Behavioral and ventilatory parameters have the possibility of predicting the stress state of fish in vivo and in situ. This paper presents a new image-processing algorithm for quantifying the average swimming speed of a fish school in an aquarium. This method is based on the alteration in projected area caused by the movement of individual fish during frame sequences captured at given time intervals. The image enhancement method increases the contrast between fish and background, and is thus suitable for use in turbid aquaculture water. Behavioral parameters (swimming activity and distribution parameters) and changes in ventilation frequency (VF) of tilapia (Oreochromis niloticus) responded to acute fluctuations in dissolved oxygen (DO) which were monitored continuously in the course of normoxia, falling DO level, maintenance of hypoxia (three levels of 1.5, 0.8 and 0.3 mg l(-1)) and subsequent recovery to normoxia. These parameters responded sensitively to acute variations in DO level; they displayed significant changes (P < 0.05) during severe hypoxia (0.8 and 0.3 mg l(-1) level) compared with normoxic condition, but there was no significant difference under conditions of mild hypoxia (1.5 mg l(-1) level). There was no significant difference in VF between two levels of severe hypoxia 0.8 and 0.3 mg l(-1) level during the low DO condition. The activity and distribution parameters displayed distinguishable differences between the 0.8 and 0.3 mg l(-1) levels. The behavioral parameters are thus capable of distinguishing between different degrees of severe hypoxia, though there were relatively large fluctuations. (c) 2006 Elsevier B.V. All rights reserved.; Behavioral and ventilatory parameters have the possibility of predicting the stress state of fish in vivo and in situ. This paper presents a new image-processing algorithm for quantifying the average swimming speed of a fish school in an aquarium. This method is based on the alteration in projected area caused by the movement of individual fish during frame sequences captured at given time intervals. The image enhancement method increases the contrast between fish and background, and is thus suitable for use in turbid aquaculture water. Behavioral parameters (swimming activity and distribution parameters) and changes in ventilation frequency (VF) of tilapia (Oreochromis niloticus) responded to acute fluctuations in dissolved oxygen (DO) which were monitored continuously in the course of normoxia, falling DO level, maintenance of hypoxia (three levels of 1.5, 0.8 and 0.3 mg l(-1)) and subsequent recovery to normoxia. These parameters responded sensitively to acute variations in DO level; they displayed significant changes (P < 0.05) during severe hypoxia (0.8 and 0.3 mg l(-1) level) compared with normoxic condition, but there was no significant difference under conditions of mild hypoxia (1.5 mg l(-1) level). There was no significant difference in VF between two levels of severe hypoxia 0.8 and 0.3 mg l(-1) level during the low DO condition. The activity and distribution parameters displayed distinguishable differences between the 0.8 and 0.3 mg l(-1) levels. The behavioral parameters are thus capable of distinguishing between different degrees of severe hypoxia, though there were relatively large fluctuations. (c) 2006 Elsevier B.V. All rights reserved. |
| 学科主题 | Agricultural Engineering ; Fisheries |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000240900100001 |
| 公开日期 | 2010-12-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/5481]  |
| 专题 | 海洋研究所_海洋生态与环境科学重点实验室 海洋研究所_海洋生物技术研发中心 |
| 作者单位 | 1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Ningbo Univ, Fac Informat Sci & Technol, Ningbo 315211, Peoples R China 3.Zhejiang Univ, Inst Agr Bio Environm Engn, Hangzhou 310029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Jianyu,Liu, Ying,Cui, Shaorong,et al. Behavioral responses of tilapia (Oreochromis niloticus) to acute fluctuations in dissolved oxygen levels as monitored by computer vision[J]. AQUACULTURAL ENGINEERING,2006,35(3):207-217. |
| APA | Xu, Jianyu,Liu, Ying,Cui, Shaorong,&Miao, Xiangwen.(2006).Behavioral responses of tilapia (Oreochromis niloticus) to acute fluctuations in dissolved oxygen levels as monitored by computer vision.AQUACULTURAL ENGINEERING,35(3),207-217. |
| MLA | Xu, Jianyu,et al."Behavioral responses of tilapia (Oreochromis niloticus) to acute fluctuations in dissolved oxygen levels as monitored by computer vision".AQUACULTURAL ENGINEERING 35.3(2006):207-217. |
入库方式： OAI收割
来源：海洋研究所
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