| 日本鳗鲡早期阶段耳石中心核外周标记轮的观察 |
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| 引用本文： | 李城华.日本鳗鲡早期阶段耳石中心核外周标记轮的观察[J].海洋科学,1996,20(1):46-48. |
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| 作者姓名： | 李城华 |
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| 作者单位： | 中国科学院海洋研究所!青岛266071 |
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| 基金项目： | 国家自然科学基金!39170603号 |
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| 摘 要： | １９８９年１０月自江苏太湖捕获到日本鳗鲡亲鱼，经暂养、人工催产后孵出 仔鳗。对仔鳗耳石进行观察，发现耳石中心核外周存在标记轮，与１９９０年４月取样 子长江口启东的白仔鳗耳石中心核外周的标记轮比较，两者无显著差别。两者耳石 中心核与其外周标记轮之间都存在两个生长轮。人工培育仔鳗耳石标记轮（第３个 日生长轮）的存在证实了白仔鳗耳石标记轮是第３个日生长轮。
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| 关 键 词： | 日本鳗鲡 耳石 电镜 标记轮 |
| 收稿时间： | 1994/12/28 0:00:00 |
OBSERVATIAN ON THE CHECK RING AROUND THE CENTRAL NUCLEUS OF OTOLITH OF THE EARLY LIFE HISTORY OF Anguilla japonica |
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| Li Chenghua.OBSERVATIAN ON THE CHECK RING AROUND THE CENTRAL NUCLEUS OF OTOLITH OF THE EARLY LIFE HISTORY OF Anguilla japonica[J].Marine Sciences,1996,20(1):46-48. |
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| Authors: | Li Chenghua |
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| Abstract: | The present study deals with formation timing of the check around the nucleus of otoliths of laborato- ry--reared larvae .obtainded by artificial inducement of reproduction in the parent eel, collected from Tai Hu lake in 1989 and microstructure of central part in otoliths of field--collected Anguilla japonica glass eel from Qi Dong near Chanjiang River Estuary in 1990. A havy dark check was observed around the nucleus of o- toliths in laboratory--reared Anguilla japonica larvae, in over two thirds of examined samples there are the checks, which are the third daily growth increment. There are two growth increments between the nucleus and the Check in otoliths of field--collected glass eel of Anguilla japonica by SEM. Diameters of the check around the nucleus in otoliths of laboratory--reared and field--collected Anguilla japonica glass eel were 10. 3 +-1. 3um (N = 21 ), 10.1+-1. 3um (N = 15) respectively. The Check around the nucleus in otoliths field--collected Anguille japonica glass eel are the third daily growth increment in determining the age in days. |
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| Keywords: | Otolith Scanning Electron Microscope Check |
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