Anthropogenic noise can cause diverse changes in animals' behaviors, but effects on feeding behaviors are understudied, especially for key invertebrate taxa. With the offshore wind industry expanding, concern exists regarding potential impacts of pile driving noise on squid and other commercially and ecologically vital taxa. We investigated changes in feeding and alarm (defense) behaviors of squid, Doryteuthis pealeii, predating on killifish, Fundulus heteroclitus, during playbacks of pile driving noise recorded from wind farm construction within squids' habitat. Fewer squid captured killifish during noise exposure compared to controls. Squid had more failed predation attempts when noise was started during predation sequences. Alarm responses to noise were similar whether or not squid were hunting killifish, indicating similar vigilance to threat stimuli in these contexts. Additionally, novel hearing measurements on F. heteroclitus confirmed they could detect the noise. These results indicate noise can disrupt feeding behaviors of a key invertebrate species, and will leverage future studies on how noise may disrupt squids’ vital ecological interactions.

人为噪声可引起动物行为的多种变化，但对饲喂行为的影响却未得到充分研究，尤其是对于关键的无脊椎动物类群而言。随着海上风能产业的发展，人们对打桩噪音对鱿鱼和其他商业上和生态上至关重要的生物群的潜在影响存在担忧。我们调查了鱿鱼，斑节菜（Doryteuthis pealeii）的捕食和警报（防御）行为的变化，这些变化主要发生在比目鱼，Fund藜，在鱿鱼栖息地内风电场建设中记录的打桩噪音的回放过程中。与对照组相比，在噪声暴露期间捕获到的乌贼的鱿鱼更少。当在捕食序列中开始发出噪音时，乌贼有更多的失败捕食尝试。不论鱿鱼是否在捕捕kill鱼，对噪音的警报反应都相似，这表明在这些情况下对威胁刺激的警惕性相似。另外，关于异形镰刀菌的新的听力测量结果证实它们可以检测到噪音。这些结果表明，噪音会破坏关键无脊椎动物的摄食行为，并将利用未来的研究来探讨噪音如何破坏鱿鱼的重要生态相互作用。