Analysis of marine life migration using biotelemetry

1997/1998年夏季，在吕佐-霍尔姆湾的Hukuro Cove，对5只成年Adeie企鹅安装了加速度数据记录仪。记录仪将速度、深度、激荡加速度和摇摆加速度的时间序列数据记录在内部的同花顺存储器中。时间序列分析结果表明，直线下降过程中的加速振荡频率为2~3赫兹。这个周期似乎与Adeie企鹅的翼拍频率相对应。总结出企鹅在30m以下的浅水中潜水时，翼振频率与潜水深度的关系为1.5~3.0 Hz，在50m以上的较深水域中，其翼振频率在2.5-Hz以上。加速度数据记录仪是估算自由放养海洋动物运动学参数的有力工具。利用数据存储标签和录像机研究了自由放养红鱼的游泳行为。这些标签能够测量活动参数，包括涌动和摇摆的加速度、游泳速度和游泳深度。带着储存标签的成年红鱼在一个实验鱼塘和一个鱼圈中被释放。从速度数据中发现了五种典型的游泳模式。类型及其出现频率如下：类型1：短跑+停顿占46.5%，类型2：短跑、中度游泳、停顿占23.3%，类型3：中度游泳、短跑、停顿占4.6%，类型4：中度游泳+停顿占2.3%，其他占23.3%。

Acceleration data loggers were attached to five adult Adeie penguins at Hukuro Cove, Luzow-Holm Bay in austral summer 1997/1998. The loggers recorded time series data of speed, depth, surging acceleration and swaying acceleration in flush memories inside. Resulting from time series analyses, the frequency of 2-to 3-Hz was found in the surging acceleration during descending in a straight line. The cycle seemed to correspond to wingbeat frequency of the Adeie penguin. The relation between the wingbeat frequency and diving depth was summarized that the frequency ranged from 1.5-Hz to 3.0-Hz when the penguins dive in the shallower water than 30-m and the frequency indicated over 2.5-Hz in the deeper water than 50-m depth. The acceleration data logger was the powerful tool to estimate kinematics parameters of free-ranging marine animals.Swimming behavior of free-range red sea breams were examined using data storage tags and a video recorder. The tags were able to measure activity parameters including both surging and swaying acceleration, swimming speed, and swimming depth. The adult red sea breams with the storage tag were released in an experimental fishpond and a fish pen. Five typical swimming patterns were found resulting from speed data. The types and their appearance frequencies were as follows; type 1 : dash and stop, 46.5%, type 2 : dash, moderate swim, and stop, 23.3%, type 3 : moderate swim, dash, and stop, 4.6%, type 4 : moderate swim and stop, 2.3%, and others, 23.3%.