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首页> 外文期刊>North American Journal of Fisheries Management >A Refined Electrofishing Technique for Collecting Silver Carp: Implications for Management
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A Refined Electrofishing Technique for Collecting Silver Carp: Implications for Management

机译：用于收集银鲤鱼的精细电气读取技术：对管理的影响

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摘要

Detecting nuisance species at low abundance or in newly established areas is critical to developing pest management strategies. Due to their sensitivity to disturbance and erratic jumping behavior, Silver Carp Hypophthalmichthys molitrix can be difficult to collect with traditional sampling methods. We compared catch per unit effort (CPUE) of all species froma Long Term Resource Monitoring (LTRM) electrofishing protocol to an experimental electrofishing technique designed to minimize Silver Carp evasion through tactical boat maneuvering and selective application of power. Differences in CPUE between electrofishing methods were detected for 2 of 41 species collected across 2 years of sampling at 20 sites along the Illinois River. The mean catch rate of Silver Carp using the experimental technique was 2.2 times the mean catch rate of the LTRM electrofishing technique; the increased capture efficiency at low relative abundance emphasizes the utility of this method for early detection. The experimental electrofishing also collected slightly larger Silver Carp (mean: 510.7 mm TL versus 495.2 mm TL), and nearly four times as many Silver Carp independently jumped into the boat during experimental transects. Novel sampling approaches, such as the experimental electrofishing technique used in this study, should be considered to increase probability of detection for aquatic nuisance species.
机译：在低丰度或新建立的地区检测滋扰物种对于开发害虫管理策略至关重要。由于它们对扰动和不稳定行为的敏感性，银鲤次耳疗法莫尔氏菌毫不骁难以用传统的采样方法收集。我们将所有物种的每单位努力（CPUE）与长期资源监测（LTRM）电扫描协议进行比较了所有物种的努力（CPUE），以实验的电捕获技术，旨在通过战术船操纵和选择性应用功率来最小化银鲤逃避。在伊利诺伊州河沿线20个地点在20个地点采样，检测到电气读取方法之间的差异21种。使用实验技术的银鲤鱼的平均捕获率为LTRM电吸入技术的平均捕获率的2.2倍;低相对丰度的捕获效率提高强调了这种方法的早期检测方法的效用。实验电拍摄也收集略大的银色鲤鱼（平均：510.7毫米TL与495.2毫米T1），并且在实验横断面的单独跳入船上的近四倍。应该考虑新的采样方法，例如本研究中使用的实验电拍摄技术，以提高水生滋扰物种检测的概率。

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