Development and application of a small Pop-up Tag using the ARGOS satellite data transfer system for obseving the behavior of aquatic animals

该项目经过三年的研究，利用Argos卫星数据传输系统开发了一种小型弹出式标签(PUT)，用于观察鱼类和水生动物的行为。2002年，也就是该项目的最后一年，我们将原型PUT附加到迁徙阶段的淡水鳗鱼上，并在标签的实验测试中释放了它们。1.我们将作为PUT主要部件的ARGOS发射器最小化到55.0x13.5x6.0 mm的小尺寸，并将其与电池、压力传感器和温度计一起安装在一个长143 mm、直径17.2 mm的圆柱形耐压碳纤维外壳中。向卫星传输数据的天线长210毫米，因此PUT的总长度为353毫米。在PUT的外面，一个专门设计的切割器(30x8毫米)被固定在一起，以将标签从鱼身上释放出来。2002年11月28日，我们在两只银色阶段的日本鳗鱼产卵迁徙过程中佩戴了一件护具，并将它们放在Tone River河口。这两个标签的弹出时间分别设置为发布后5天和15天。虽然5天标签在释放后丢失，但我们成功地从15天标签中获得了数据，并确认了PUT通过卫星传输数据的能力。经过三年的研究，虽然我们需要对数据传输系统进行一些小的修改，但我们达到了开发PUT的预定目标。我们计划再进行一次试验场发布，并对系统进行完善，几年后，我们将生产商业化产品。

The three years of research of this project has resulted in the development of a small pop-up tag (PUT) using the ARGOS satellite data transfer system for observing the behavior of fishes and aquatic animals, and in 2002, the last year of the project, we attached prototype PUTs to migratory phase freshwater eels and released them during an experimental test of the tags. The primary results of this research to develop PUT are summarized as follows:1. We minimized an ARGOS transmitter that is a main part of a PUT, to the small size of 55.0 x 13.5 x 6.0 mm, and mounted it along with a battery, pressure sensor and thermometer within a cylindrical pressure resistant carbon FRP case that was 143 mm long and 17.2 mmφ. The antenna for transmitting the data to the satellite was 210 mm long and so the total length of the PUT was 353 mm. Outside the PUT, a specially designed cutter (30 x 8 mm) was attached to release the tag from the fish.2. On 28 November 2002, we attached a PUT on two silver stage Japanese eels, Anguilla japonica, during their spawning migration and released them in the Tone River estuary. The timing of pop up for each of the two tags was set at 5 and 15 days after release. Although the 5-day tag was lost after release, we successfully obtained data from the 15-day tag and confirmed the ability of the PUT to transmit data by satellite.3. After three years of research we attained the scheduled goal of developing PUT, although we need a small modification of the data transmission system. We plan to make an additional experimental field release and refine the system, and after a few years, we will make commercial products.