Koehn J D, Nicol S J
Arthur Rylah Institute for Environmental Research, Department of Sustainability and Environment, 123 Brown Street, Heidelberg, 3084, Australia.
Oceanic Fisheries Programme, Secretariat of the Pacific Community, BP D5, 98848, Noumea Cedex, New Caledonia.
J Fish Biol. 2016 Apr;88(4):1350-68. doi: 10.1111/jfb.12884. Epub 2016 Feb 26.
A multi-year radio-telemetry data set was used to comparatively examine the concurrent movements of the adults of three large-bodied Australian native freshwater fishes (Murray cod Maccullochella peelii, trout cod Maccullochella macquariensis and golden perch Macquaria ambigua) and the introduced carp Cyprinus carpio. The study was conducted over a reach scale in the regulated Murray River in south-eastern Australia. Differences were identified in the movements among these species. The predominant behaviour was the use of small movements (<1 km) for all species, and although larger-scale movements (>1 km) did occur, the frequency varied considerably among species. Large-scale movements were least evident for M. macquariensis and more common for M. ambigua and C. carpio with these two species also having a greater propensity to change locations. Macquaria ambigua displayed the largest movements and more M. ambigua moved on a 'continual' basis. Although a degree of site fidelity was evident for all species, the highest levels were exhibited by M. macquariensis and M. peelii. Homing was also evident to some degree in all species, but was greatest for M. peelii.
利用多年的无线电遥测数据集，对三种澳大利亚大型本土淡水鱼（墨瑞鳕Maccullochella peelii、鳟鳕Maccullochella macquariensis和黄金鲈Macquaria ambigua）以及外来的鲤鱼Cyprinus carpio成年个体的同步移动情况进行了比较研究。该研究在澳大利亚东南部受调控的墨累河的一个河段尺度上开展。已确定这些物种之间移动情况存在差异。所有物种的主要行为都是进行小范围移动（<1公里），尽管确实也发生了大规模移动（>1公里），但不同物种的发生频率差异很大。大规模移动在鳟鳕中最不明显，在黄金鲈和鲤鱼中更常见，这两个物种改变位置的倾向也更大。黄金鲈的移动距离最大，并且更多的黄金鲈在“持续”移动。尽管所有物种都表现出一定程度的位点忠诚度，但鳟鳕和墨瑞鳕表现出的位点忠诚度最高。归巢现象在所有物种中也都有一定程度的体现，但在墨瑞鳕中最为明显。
