Key Laboratory of Underwater Acoustic Communication and Marine Information Technology of the Ministry of Education, College of Ocean and Earth Sciences, Xiamen University, Xiamen 361005, Fujian, China.
Mindong Fisheries Research Institute of Fujian Province, 352000, Ningde, China.
J Acoust Soc Am. 2023 Jun 1;153(6):3192. doi: 10.1121/10.0019634.
The investigation of the large yellow croaker (Larimichthys crocea) deserves more attention due to its high commercial value as an important aquaculture fish species. This study was initiated by deploying a passive acoustic monitoring device to record the calls from the L. crocea during the spawning process in an aquaculture facility. The subsequent analysis suggested the croakers produced at least two types of calls with considerable energy distributed up to 1000 Hz. The acoustic data and the computed tomography scanning of an adult croaker were used to develop a numerical model to address the directivity of the calls at frequencies up to 1000 Hz. The radiation patterns at all frequencies were assigned with respective weights and then combined to estimate an overall acoustic radiation pattern for both types of the calls. The backward transmission was greater for both types of calls by 1.85 dB on average. The reduction of size by 20% in the swim bladder resulted in a stronger sidelobe in the frontal direction, indicating its influence on call directivity. These results provided information on the directivity of the croaker calls and understanding of fish acoustics.
大黄鱼（Larimichthys crocea）因其作为一种重要的养殖鱼类具有很高的商业价值，因此值得更多的关注。本研究通过部署被动声学监测设备来记录养殖设施中大黄鱼繁殖过程中的叫声。随后的分析表明，大黄鱼至少发出两种类型的叫声，其能量分布在 1000Hz 以上。利用声学数据和成年大黄鱼的计算机断层扫描来开发一个数值模型，以解决高达 1000Hz 频率的叫声的指向性。在所有频率下的辐射模式都被赋予相应的权重，然后组合起来估计两种叫声的整体声学辐射模式。两种叫声的反向传输平均增加了 1.85dB。鳔的尺寸减小 20%会导致前向方向的旁瓣更强，表明其对叫声指向性的影响。这些结果提供了大黄鱼叫声指向性的信息和鱼类声学的理解。
