Effects of electric fishing on the invertebrate fauna of a New Zealand stream
Effects of electric fishing on the invertebrate fauna of a New Zealand stream
复制标题
电捕鱼对新西兰溪流无脊椎动物群的影响
DOI：
10.1080/00288330.1975.9515544
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发表时间：
1975
影响因子：
1.6
通讯作者：
Chris R. Fowles
中科院分区：
文献类型：
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作者：
Chris R. Fowles
摘要1972年12月，在新西兰南岛Rakaia河支流Glenariffe系统的一部分Woolly Creek进行了电捕鱼实验。两名操作员从河岸开始对25米长的溪流进行电捕鱼，上游和下游方向各有三次。漂移量的大幅增加是由电捕鱼过程造成的，这对蜉蝣目和寡毛纲的Tubificidae和Lumbriculidae有显着的影响。离开实验河段的无脊椎动物漂流物主要来自下游10米处，当捕鱼向下游方向进行时，漂流物样品中捕获了更多的无脊椎动物。这可能是因为电极经过了先前进入上游漂流“较高”的无脊椎动物，并在河段较低的基底上重新定居。电捕鱼对实验区底栖生物漂流物的损失占总损失的9.6%。这略高于底栖动物减少8%的幅度。
Abstract Electric fishing experiments were made in Woolly Creek, part of the Glenariffe system of tributaries to the Rakaia River, South Island, New Zealand, during December 1972. Two operators electric fished a 25‐m length of stream from the banks, with three runs in both upstream and downstream directions. Large increases in drift were caused by the electric fishing process, which had a marked effect on the Ephemeroptera and the oligochaete families Tubificidae and Lumbriculidae. The invertebrate drift leaving the experimental reach came predominantly from the downstream 10 m section, and larger numbers were caught in drift samples when fishing proceeded in a downstream direction. This was probably because the electrode passed over invertebrates which had previously entered the drift ‘higher’ upstream and re‐settled on the substrate lower in the reach. Electric fishing caused a loss to the drift of 9.6% of the total benthos in the experimental area. This was slightly more than the 8% decrease in benthic...