查询词典 leptocephali

Otoliths remained steadily growing during metamorphoses, the number of otolith DGIs deposited after TC marks as consistant with the rearing days(p＜0.01) which validate the daily periodicity of the otolith increment deposition of Pacific tarpon leptocephali during metamorphoses. As for otolith microchemistry, Sr/Ca ratios in otolith of the fish decreased in accompany with metamorphosis, while Na/Ca ratios in otolith changed oppositely as Sr/Ca ratio.

TC萤光记号后新增的耳石轮数与饲养天数之间呈1：1的线性关系（p＜0.01），所以大眼海鲢的柳叶鱼在变态期间，耳石仍然维持一天一轮的日周性成长，变态开始发生时，耳石的轮宽急遽上升，耳石的Sr/Ca比急遽下降。

The results showed that total length of the leptocephali dramatically decreased during the 1st to the 4th day of experiment in the Stage II.

结果，实验第1天体长开始收缩到实验第4天的体长收缩到最短（全长范围20.60 mm ~21.69 mm）为StageⅡ的发育阶段。

The spawning area was successfully outlined to the west of the Mariana Islands in 1991, and other research suggests that their recruitment success may be related to El Nino events, which appear to affect the transfer of leptocephali from the north equatorial current into the Kuroshio Current.

在1991年的时候人们也已经基本的弄清楚了它的产卵区域，有人也认为它的洄游和厄尔尼诺事件是及其相关的，厄尔尼诺似乎会影响苗从北赤道流进入黑潮流系的过程。

From otoliths, the spawning times of these three species are all estimated to occur much later in the year than when small leptocephali are found at sea, indicating that ages appear to be underestimated.

从耳石来看，这三种鳗的产卵时间按照耳石推断出来都比实际发现柳叶鳗的时间要晚一些。

European eels are inferred to spawn year-round from otolith analysis, but the smallest, recently hatched leptocephali are found only in late winter and spring.

耳石分析得出欧洲鳗是全年产卵的，但是最小的刚孵化出来的柳叶鳗幼体趋势在冬末春初发现的。

A Lagrangian model is presented of the current-carried migration of the leptocephali of the European eel across the North Atlantic Ocean from the spawning area in the Sargasso Sea to the adult range in Europe and North Africa.

拉格朗日模型模拟了欧洲鳗的幼体随流洄游，横过北大西洋从马尾藻海的产卵场到欧洲和北非的成体生活区域。

After acclimating 1 day, the leptocephali were immersed in a tetracycline solution to mark the otoliths with a fluorescent band as the onset of the experiment (Day 1) and then reared in the treatments spiked with different concentrations (2×、4×、8×) of Sr and Ba.

个别添加 SrCl2 ˙ 6H2O和Ba(NO3)2 两种药品，将饲育水依2×、4×、8×的比例调配成含控制组的四个浓度加两重复添加实验，饲育萤光标示后的柳叶鱼。

This study reviewed literature on spawning times for three north temperate species of anguillid eels estimated by sampling for small leptocephali at sea and for several temperate and tropical species by back-calculating from putative daily ages derived from otolith increment analysis of glass eels that recruited to coastal waters.

本文通过研究了海里采集鳗鲡幼体总结出的三种北温带种类的鳗鲡的产卵时间，并且通过通过分析溯河洄游到淡水的鳗苗的耳石日龄倒推出的产卵时间，将二者进行比较研究。

Several basic tenrts of otolith research have been questioned recently with regard to eel metamorphosis.specifically,some researchers have suggested that otolith increment formation is not daily,and otolith material may be resorped during metamorphosis.we conducted a rearing experiment to test the hypothesis that increment formation is daily and that the otolith continues to grow during eel metamorphosis.we marked the otolith of wild-caught leptocephali and reared these fish through metamorphosis.metamorphosis was characterized by a decreasing standard length,pre-anal length,and body depth accompanied by an increase in pigmentation and a change in behavior.

最近学者关注的鳗的耳石的研究的几个最基本的问题涉及到鳗的变形。尤其是很多研究者认为耳石的日轮沉积并非是每天的，耳石的材质可能是会在变态过程中被重吸收一部分。我们做了个养殖的实验来测试鳗鲡耳石的形成的每天一轮而且在鳗鲡的变态发育阶段耳石是在继续生长的。我们标记了野外捕捞的蠕鳗幼体，养过变态期。变态期是通过标准长度，肛前长和体高的减少和色素的减少以及行为的变化来定义的。

In the Stage III（6st ~10th days） the total length of the leptocephali stayed unchanged, the fish body is not transparent any more, organs and systems grew continuously.

StageⅢ的体长并无明显增加，组织及器官发育逐渐接近完全。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。