摘要
利用美国Sonotronics公司的超声波发射器、接收仪和水下听筒装配的一套超声波遥测定位系统,在长江宜昌江段对中华鲟进行遥测试验,方法可靠,在葛州坝下江段其探测半径约达1500米。借助特制快艇和GPS,采用三角定位法,可较准确地定位中华鲟行踪。超声波发射器的特定声波编码,可将不同标志个体区别开。本试验1995和1996年标志了15尾即将参加自然繁殖的中华鲟。其中1996年标志10尾,全部进行了定位追踪,记录了各尾鲟在产前、产卵和产后的行踪,各尾鱼持续定位6~48天,平均19.8天,总定位次数达573次。该方法也适用于其它的江河和其它鱼类和水生动物迁移规律、产卵场定位和产卵条件等研究。
The ultrasonic telemetry system consisted of a sonic receiver, a hydrophone and sonic transmitters (tags), all of which were made by Sonotronics, Inc., USA. Ultrasonic tags (two types: 78kHz and 40kHz) were tested in the Yichang reach below Gezhouba Dam and found that the sonic signal could be detected an estimated 1500m range. The receiver hydrophone system was mounted on a glassfiber boat (6.3 meter long, 63.4 kW outboard motor), using triangulation, enabled accurate locating of fish with GPS assistance. Tagged individuals could be identified by the signals from the sonic coded tags. 15 of final sexual mature sturgeon were tagged below Gezhouba Dam at the Yichang reach of Yangtze River in October 1995 and 1996. The scanned area was from the dam to the reach at Yidu City, covering about 50 km in length. All of 10 fish tagged were located in 1996, and monitored their movements of each fish during their pre spawning, post spawning and spawning. The reach was surveyed 4 times each day. 10 of the tagged fish were located totally 573 times. Each of them was successively located for 6~48 days respectively, averaging 19.8 days. The telemetry technique used in Yangtze River could be used to studies on migration, locating breeding sites and spawning requirements of other fishes or aquatic animals in the Yangtze and other rivers.
出处
《水产学报》
CAS
CSCD
北大核心
1998年第3期211-217,共7页
Journal of Fisheries of China
基金
国家自然科学基金
三峡工程生态与环境资助
关键词
中华鲟
生物遥测
GPS
超声波
长江
Acipenser sinensis, Biotelemetry, GPS, Ultrasonar, Yangtze River