Biology Department, Woods Hole Oceanographic Institution, Woods Hole, Massachusetts 02543, USA.
J Acoust Soc Am. 2023 Jan;153(1):529. doi: 10.1121/10.0016898.
Marine crustaceans produce broadband sounds that are useful for passive acoustic monitoring to support conservation and management efforts. However, the propagation characteristics and detection ranges of their signals are poorly known, limiting our leveraging of these sounds. Here, we used a four-hydrophone linear array to measure source levels (SLs) and sound propagation from Caribbean spiny lobsters (Panulirus argus) of a wide range of sizes within a natural, shallow water habitat (3.3 m depth). Source level in peak-peak (SLpp) varied with body size; larger individuals produced SLpp up to 166 dB re 1 μPa. However, transmission losses (TL) were similar across all sizes, with a global fitted TL of 12.1 dB. Correspondingly, calculated detection ranges varied with body size, ranging between 14 and 364 m for small and large individuals (respectively). This increased up to 1612 m for large spiny lobsters when considering lower ambient noise levels. Despite the potential ease of tank studies, our results highlight the importance of empirical in situ sound propagation studies for marine crustaceans. Given the important ecological and economic role of spiny lobsters, these data are a key step to supporting remote monitoring of this species for fisheries management and efforts to acoustically quantify coral reefs' health.
海洋甲壳类动物会产生宽带声音，这些声音可用于被动声学监测，以支持保护和管理工作。然而，它们的信号传播特性和探测范围知之甚少，限制了我们对这些声音的利用。在这里，我们使用四通道水听器线列阵在一个自然的浅水环境（3.3 米深）中测量了加勒比刺龙虾（Panulirus argus）不同大小的声源级（SL）和声传播。峰峰值声源级（SLpp）随体型大小而变化；体型较大的个体产生的 SLpp 高达 166 dB re 1 μPa。然而，所有尺寸的传输损耗（TL）相似，全局拟合的 TL 为 12.1 dB。相应地，根据体型大小计算的探测范围也有所不同，体型较小和较大的个体分别为 14 米至 364 米。当考虑到较低的环境噪声水平时，体型较大的刺龙虾的探测范围最高可达 1612 米。尽管在水箱中进行研究可能较为容易，但我们的研究结果强调了对海洋甲壳类动物进行实证原位声传播研究的重要性。鉴于刺龙虾在生态和经济方面的重要作用，这些数据是支持对该物种进行远程监测以进行渔业管理和利用声学方法评估珊瑚礁健康状况的关键步骤。
