Occurrence and characteristic of sound in large yellow croaker ( Pseudosciaena crocea )
REN Xin-min, GAO Da-zhi, YAO Yu-ling, YANG Feng, LIU Jia-fu, XIE Fang-jing
1. Information Science and Engineering College, Ocean University of China, Qingdao 266071, China; 2. Aquaculture Technology Extension Station of Ningde, Ningde 352100, China
Abstract: Large yellow croaker Pseudosciaena crocea, as a soniferous species, produce different types of sound during feeding and spawning. These sounds were analyzed and compared. Spectrum analyses showed that sound types have the same power spectrum and the peak frequencies at about 800 Hz. However, in oscillogram, there are significant differences for the two sounds. The feeding sounds consist of simple single pulses and pulse - intervals are short, mostly from 1 to 30 ms, while spawning sounds consist of continuous two pulses or three pulses, with a small number of single pulses and continuous several pulses. Pulse - intervals are long, mostly from 100 to 130 ms.