Timing, frequency and environmental conditions associated with mainstem-tributary movement by a lowland river fish, golden perch (Macquaria ambigua).
Timing, frequency and environmental conditions associated with mainstem-tributary movement by a lowland river fish, golden perch (Macquaria ambigua).
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DOI：
10.1371/journal.pone.0096044
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发表时间：
2014
期刊：
影响因子：
3.7
通讯作者：
Crook DA
中科院分区：
文献类型：
--
作者：
Koster WM;Dawson DR;O'Mahony DJ;Moloney PD;Crook DA
支流和干流的连接是整个河网中鱼类和其他生物群运动的重要纽带。我们调查了成年金鲈鱼（Macquaria ambigua）在澳大利亚东南部墨累河中游主流和一条支流古尔本河（Goulburn River）之间活动的时间、频率和环境条件，使用声波遥测技术历时四年（2007-2011）。2007-2009年秋季，在墨累中游（n = 42）和古尔本下游（n = 37）河流中，在墨累中游-古尔本下游交界处3-6公里范围内，对鱼进行了标记和放生。有38%的被标记的鱼进行了主支流运动，其特征主要是暂时占据，然后返回原来捕获的河流。大约10%的被标记的鱼表现出在主干线和支流之间的长期转移。鱼类从支流进入主河道主要发生在产卵季节，在某些年份，与主河道漂流样本中金鲈鱼卵/幼虫的出现相吻合。许多支流向主干的运动发生在水流变化期间或之后不久。鱼类从主河道进入支流的运动是不规则的，似乎与产卵无关。研究结果表明，金鲈鱼在主支流界面上自由移动。这表明需要考虑跨地理管理单元（如河流）水生动物的空间、行为和人口相互依赖关系。
Tributary and mainstem connections represent important links for the movement of fish and other biota throughout river networks. We investigated the timing, frequency and environmental conditions associated with movements by adult golden perch (Macquaria ambigua) between the mainstem of the mid-Murray River and a tributary, the Goulburn River, in south-eastern Australia, using acoustic telemetry over four years (2007–2011). Fish were tagged and released in autumn 2007–2009 in the mid-Murray (n = 42) and lower Goulburn (n = 37) rivers within 3–6 km of the mid-Murray-lower Goulburn junction. 38% of tagged fish undertook mainstem–tributary movements, characterised mostly by temporary occupation followed by return of fish to the original capture river. Approximately 10% of tagged fish exhibited longer-term shifts between the mainstem and tributary. Movement of fish from the tributary into the mainstem occurred primarily during the spawning season and in some years coincided with the presence of golden perch eggs/larvae in drift samples in the mainstem. Many of the tributary-to-mainstem movements occurred during or soon after changes in flow. The movements of fish from the mainstem into the tributary were irregular and did not appear to be associated with spawning. The findings show that golden perch moved freely across the mainstem–tributary interface. This demonstrates the need to consider the spatial, behavioural and demographic interdependencies of aquatic fauna across geographic management units such as rivers.
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影响因子：
4.8
作者：
Crook, DA
通讯作者：
Crook, DA
DOI：
10.1002/rrr.3450110310
发表时间：
1995-11-01
期刊：
REGULATED RIVERS-RESEARCH & MANAGEMENT
影响因子：
--
作者：
Gehrke, PC;Brown, P;Bruce, AM
通讯作者：
Bruce, AM
影响因子：
4.9
作者：
Faulks, Leanne K.;Gilligan, Dean M.;Beheregaray, Luciano B.
通讯作者：
Beheregaray, Luciano B.
影响因子：
1.8
作者：
King, A. J.;Tonkin, Z.;Lieshcke, J.
通讯作者：
Lieshcke, J.
影响因子：
2.4
作者：
Johnson, GE;Hedgepeth, JB;Giorgi, AE
通讯作者：
Giorgi, AE