Seasonal stream habitat of adult Sakhalin taimen, Parahucho perryi, in the Bekanbeushi River system, eastern Hokkaido, Japan

Seasonal stream habitat of adult Sakhalin taimen, Parahucho perryi, in the Bekanbeushi River system, eastern Hokkaido, Japan
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日本北海道东部 Bekanbeushi 河系成年库页岛鲷 (Parahucho perryi) 的季节性溪流栖息地

DOI:
10.1111/j.1600-0633.2012.00585.x
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发表时间:
2012
影响因子:
1.8
通讯作者:
K. Miyashita
K. Miyashita
中科院分区:
农林科学3区
文献类型:
--
作者:
Kentaro Honda;Haruka Kagiwada;N. Takahashi;K. Miyashita

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2008年至2010年,在流经北海道东部的北寒河水系中,通过声学遥测技术对濒危的库页岛泰门鱼(Parahucho perryi)成虫进行了行为跟踪。共有39个跟踪P.perryi显示广泛使用的河流系统,上游和下游,无论是月份或年份。追踪到的P.perryi成虫在海洋中停留时间均不超过1天。一些鱼(20%)居住在上游栖息地一贯从春季到秋季,而40%的个人表现出广泛利用整个上游和下游系统。虽然39.4%的跟踪鱼利用两个或两个以上的主要支流的主要河流,6.1%只使用主要河流系统。不同的变异性,观察个人之间的基础上,在每个流达到(上,中,下游)所花费的时间的比例。2008年和2010年观察到的趋势表明,当下游水温升高时,追踪鱼会向上游移动。2009年夏季下游水温比2008年和2010年的平均值低2 °C以上,但没有观察到这一趋势。我们的研究结果表明,成年P.perryi在Bekanbeushi河系统表现出较高的行为可塑性,即鱼可以选择栖息地根据自己的个人需求。我们的研究结果还表明,河流到达上游和下游之间的物理连续性的重要性,使P. perryi没有遇到障碍,在移动到最佳栖息地。
Behavioural tracking of endangered adult Sakhalin taimen (Parahucho perryi) by acoustic telemetry was conducted in the Bekanbeushi River system that flows through eastern Hokkaido in 2008–2010. A total of 39 tracked P. perryi showed extensive use of the river system, both upstream and downstream, regardless of the month or year. No tracked adult P. perryi stayed in the ocean for more than 1 day. Some of the fish (20%) dwelled in upstream habitat consistently from spring to autumn, while 40% of individuals showed wide utilisation of the entire upstream and downstream systems. Although 39.4% of tracked fish utilised two or more primary tributaries to the main river, 6.1% used only the main river system. Distinct variability was observed between individuals based on the proportion of time spent in each stream reach (up-, mid-, and downstream). A trend was observed in 2008 and 2010 showing that tracked fish moved to the upper stream reaches when water temperatures downstream increased. This trend was not observed in 2009 when the summer water temperature downstream was more than 2 °C below average when compared to 2008 and 2010. Our results suggest that adult P. perryi in the Bekanbeushi River system exhibit high behavioural plasticity, that is, the fish can select habitats based on their own individual requirements. Our results also demonstrate the importance of physical continuity among river reaches both upstream and downstream such that P. perryi does not experience barriers in moving to optimal habitats.
使用耳石 Sr:Ca 比率研究在日本北部鄂霍次克海捕获的库页岛哲罗鱼的迁徙历史
DOI: --
发表时间: 2011
期刊: Fisheries Science(平成23年3月16日受理、onlineで公開)
影响因子: --
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耳石的 Sr:Ca 比率揭示了库页岛哲罗鱼 (Hucho perryi) 向下游迁移的证据。
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发表时间: 2004
期刊: Ichthyological Research 51
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发表时间: 2007
期刊: Freshwater biology Vol.52/8
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作者:
M. Han;M. Fukushima;S. Kameyama;T. Fukushima and B. Matsushita;M. Fukushima
通讯作者: M. Fukushima