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RARE KEY SUBSTANES OLFACTORY SENSE : IDETIFICATION OF HOME STREAM SUBSTANCES IN SALMON

稀有关键物质嗅觉：三文鱼中原生物质的识别

基本信息

批准号：
12045257
负责人：
KURIHARA Kenzo
金额：
$ 9.22万
依托单位：
AOMORI UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research on Priority Areas
财政年份：
2000
资助国家：
日本
起止时间：
2000 至 2002
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12045257/
关键词：
SALMON AMINO ACIDS CHUM SALMON OLFACTIORY SENSE TWO-CHOICE TEST TANK OSARU RIVER HOME STREAM SUBSTANCE BEHAVIORAL STUDY 母川回帰ヒメマス洞爺湖 Y迷路支笏湖フェロモン

项目摘要

Salmon have the amazing ability to migrate long distances from the ocean to their home streams for spawning.For open water orientation, we showed that salmon use visual cues. For upstream homing from the coastal area to the home stream, the olfactory hypothesis has proposed, but the odor substances of home stream are unknown.In the previous study, we proposed that the odor substances are amino acids.The present study aims to prove this hypothesis.Upstream selective movements of chum salmon (Oncorhynchus keta), which were captured in the Osaru Rive, Hokkaido, Japan, in late spawning season, was investigated in a two-choice test tank consisted of two water inlet arms and one pool. Artificial home stream river water and lake water were added to each arm. Artificial home stream water was prepared based on the compositions of amino acids and related substance of the Osaru River. Mature male chum salmon were captured by the wire in the Osaru River, Hokkaido, and transferred to the Toya Lake Station, Hokkaido University. Of chum salmon tested, 28 fish showed upstream movement to one of the choice arm, and 24 fish (85.7%) of those moved fish were found in the arm running the artificial home stream water.These results strongly support our hypothesis that amino acids disslved in stream waters are home stream substances for salmon homing.

鲑鱼有一种惊人的能力，可以从海洋长途迁徙到它们的家乡溪流产卵。对于开放水域的定位，我们展示了鲑鱼使用视觉线索。对于从沿海地区上游归巢到母流的现象，提出了嗅觉假说，但母流的气味物质尚不清楚。在之前的研究中，我们提出气味物质是氨基酸。本研究旨在证明这一假设。在一个由两个进水口臂和一个水池组成的双选择试验池中，研究了在日本北海道Osaru河产卵季节后期捕获的大马哈鱼（Oncorhynchus keta）的上游选择运动。每个手臂都加入了人工家庭溪流、河水和湖水。以小砂流河氨基酸及相关物质的组成为基础，制备了人工家庭溪流水。在北海道Osaru河捕获成熟雄性大马哈鱼，并将其转移到北海道大学托谷湖站。在接受测试的大马哈鱼中，有28条鱼向其中一条选择臂上游移动，其中24条鱼（85.7%）在使用人工家庭溪流的手臂中被发现。这些结果有力地支持了我们的假设，即溶解在溪水中的氨基酸是鲑鱼归巢的家流物质。