A. Kapusta, J. Morzuch, A. Duda, E. Bogacka-Kapusta, R. Kolman
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引用次数: 4
Abstract
Abstract The post-stocking dispersal of juvenile Atlantic sturgeon (Acipenser oxyrinchus Mitchill) in the Wis3oka River (southern Poland) was investigated using biotelemetry. Thirty-five hatchery-reared juvenile A. oxyrinchus were tagged with radio or acoustic transmitters and tracked using mobile surveys and fixed receivers. Daily movement patterns were similar in 2009 and 2010. The sturgeon migrated with a mean speed of 1.42 km h-1 in 2009 and of 2.06 km h-1 in 2010. Migration rate was not regarded as being dependent on juvenile sturgeon size. The confirmed survival of individuals from the two field seasons differed slightly over the course of this study. Short-term survival of A. oxyrinchus was 86.7 and 90% in 2009 and 2010, respectively.
摘要采用生物遥测技术研究了波兰南部Wis3oka河大西洋鲟幼鱼放养后的洄游过程。用无线电或声发射机对35只孵化场饲养的尖吻库幼鱼进行了标记，并利用移动调查和固定接收器对其进行了跟踪。2009年和2010年的日常活动模式相似。2009年鲟鱼的平均迁徙速度为1.42 km h-1, 2010年为2.06 km h-1。洄游率不被认为是取决于幼鲟的大小。在本研究过程中，两个野外季节确认的个体存活率略有不同。2009年和2010年的短期存活率分别为86.7%和90%。
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