Projecting sound into navigational locks has been suggested as a promising way to block the upstream movement of invasive species of carp (family Cyprinidae). This possibility is promising because carp have a good sense of hearing compared to non‐ostariophysian fishes. Although the broadband sound of an outboard motor has been shown to repel several species of carp in laboratory arenas, its efficacy in a navigational lock is unknown. This study tested whether wild‐caught Common Carp Cyprinus carpio are repelled by this sound in a lock chamber in a similar manner to that observed in laboratory studies. We found that while the sound of a 40‐hp outboard motor repelled Common Carp in a lock the first time it was tested, the fish stopped responding after that, suggesting that they had habituated. This result differed from that of a laboratory study that used the same sound at the same volume and found responses to persist for three exposures before dissipating. Many factors, including the use of wild Common Carp already familiar with outboard motor sounds and differences in background noise, may have been responsible for differences between laboratory and field results. There is a need for more field tests using other sounds and carp species.

中文翻译：

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普通鲤鱼最初在锁定室内被宽带舷外机的声音所击退，但很快就习惯了

已经提出了将声音投射到航行锁中作为阻止鲤鱼（鲤科）入侵物种向上游运动的有前途的方法。这种可能性是有希望的，因为与非普通鱼类相比，鲤鱼具有良好的听觉。尽管已经证明舷外机的宽带声音可以在实验室中驱除几种鲤鱼，但其在航行中的功效尚不清楚。这项研究测试了野生捕捞的鲤鱼鲤鱼在锁室中被这种声音驱除的声音与实验室研究中观察到的声音相似。我们发现，虽然40马力舷外机的声音在首次进行测试时就将普通鲤鱼拒之门外，但此后鱼却停止了响应，表明它们已经习惯了。该结果与实验室研究的结果不同，该实验室研究使用相同的声音，相同的音量，并发现在消散之前，对于三种暴露持续存在响应。许多因素，包括使用已经熟悉舷外马达声音的野生鲤鱼和背景噪声的差异，可能是造成实验室和现场结果之间差异的原因。需要使用其他声音和鲤鱼种类进行更多的现场测试。