Temperature influence on the spawning performance of artificially-matured Japanese eel, Anguilla japonica, in captivity
文献类型：期刊论文
| 作者 | Dou, Shuo-Zeng1; Yamada, Yoshiaki2; Okamura, Akihiro2; Shinoda, Akira3; Tanaka, Satoru2; Tsukamoto, Katsumi3 |
| 刊名 | ENVIRONMENTAL BIOLOGY OF FISHES
 |
| 出版日期 | 2008-06-01 |
| 卷号 | 82期号:2页码:151-164 |
| 关键词 | Activity Off-bottom Swimming Hormone-treated Maturation Anguillid Eel |
| ISSN号 | 0378-1909 |
| DOI | 10.1007/s10641-007-9268-8 |
| 文献子类 | Article |
| 英文摘要 | We studied the influence of temperature on the spawning performance of artificially matured Japanese eels, Anguilla japonica, in captivity. We used routine hormone injections to bring females and males to maturity in separate aquaria. We recorded the behavior of three pairs of such hormone-treated matured eels in an aquarium (2 replicates) at four temperatures: 14, 18, 22, and 27 degrees C, respectively. They became active and frequently left the bottom swimming in the water column, and spawning events occurred. Females released eggs in the water column around the activity peaks. Males preceded females in reaching activity peaks (presumably the timing of sperm ejection and egg release), possibly resulting in the low fertilization we observed in this experiment. Males and females returned back to the aquarium bottoms and became quiet after spawning. On several occasions, male-female or female-female pairs were observed to 'cruise together' in the water column for several to tens of seconds prior to egg releasing, but no courtship behavior indicative of spawning such as pairing and chasing was observed in the eels in our study. Our results suggest that 18-22 degrees C might be the thermal preference for spawning for Japanese eels, which approximates the temperature range of the 500 m deep water layer around the Mariana Islands seamount area, the presumed spawning site for the Japanese eel.; We studied the influence of temperature on the spawning performance of artificially matured Japanese eels, Anguilla japonica, in captivity. We used routine hormone injections to bring females and males to maturity in separate aquaria. We recorded the behavior of three pairs of such hormone-treated matured eels in an aquarium (2 replicates) at four temperatures: 14, 18, 22, and 27 degrees C, respectively. They became active and frequently left the bottom swimming in the water column, and spawning events occurred. Females released eggs in the water column around the activity peaks. Males preceded females in reaching activity peaks (presumably the timing of sperm ejection and egg release), possibly resulting in the low fertilization we observed in this experiment. Males and females returned back to the aquarium bottoms and became quiet after spawning. On several occasions, male-female or female-female pairs were observed to 'cruise together' in the water column for several to tens of seconds prior to egg releasing, but no courtship behavior indicative of spawning such as pairing and chasing was observed in the eels in our study. Our results suggest that 18-22 degrees C might be the thermal preference for spawning for Japanese eels, which approximates the temperature range of the 500 m deep water layer around the Mariana Islands seamount area, the presumed spawning site for the Japanese eel. |
| 学科主题 | Ecology ; Marine & Freshwater Biology |
| URL标识 | 查看原文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000255191300006 |
| 公开日期 | 2010-12-24 |
| 源URL | [http://ir.qdio.ac.cn/handle/337002/5331]  |
| 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 266701, Peoples R China 2.Irago Inst Co Ltd, Aichi 4413605, Japan 3.Univ Tokyo, Ocean Res Inst, Tokyo 1648639, Japan |
| 推荐引用方式 GB/T 7714 | Dou, Shuo-Zeng,Yamada, Yoshiaki,Okamura, Akihiro,et al. Temperature influence on the spawning performance of artificially-matured Japanese eel, Anguilla japonica, in captivity[J]. ENVIRONMENTAL BIOLOGY OF FISHES,2008,82(2):151-164. |
| APA | Dou, Shuo-Zeng,Yamada, Yoshiaki,Okamura, Akihiro,Shinoda, Akira,Tanaka, Satoru,&Tsukamoto, Katsumi.(2008).Temperature influence on the spawning performance of artificially-matured Japanese eel, Anguilla japonica, in captivity.ENVIRONMENTAL BIOLOGY OF FISHES,82(2),151-164. |
| MLA | Dou, Shuo-Zeng,et al."Temperature influence on the spawning performance of artificially-matured Japanese eel, Anguilla japonica, in captivity".ENVIRONMENTAL BIOLOGY OF FISHES 82.2(2008):151-164. |
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来源：海洋研究所
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