南美白对虾进食前后发声信号特点分析  

Analysis on sound characteristics of Penaeus vannamei before and after feeding

作　　者：张丽珍[1] 陆天辰 杨加庆[1] 胡庆松[1] 曹正良[2] ZHANG Lizhen;LU Tianchen;YANG Jiaqing;HU Qingsong;CAO Zhengliang(College of Engineering Science and Technology,Shanghai Ocean University,Shanghai 201306,China;College of Marine Sciences,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]上海海洋大学工程学院,上海201306 [2]上海海洋大学海洋科学学院,上海201306

出　　处：《声学技术》2020年第4期413-418,共6页Technical Acoustics

基　　金：上海市科技兴农项目(2019-02-08-00-10-F01117);上海市虾类产业技术体系建设(沪农科产字(2014)第5号)资助项目。

摘　　要：为了探索南美白对虾进食前后发声信号特点和规律,首先进行了养殖虾塘环境下的实验,利用水听器与采集器采集信号;然后利用Matlab软件对信号进行频谱分析和时频分析,得到南美白对虾的发声信号规律。实验证明,在淡水养殖环境下,南美白对虾产生的声信号具有一定的规律,一般情况单个脉冲信号时长为0.005 s,主峰频率在2~10 kHz之间,投饵后主峰频率有所扩大,约在5~15 kHz之间。投饵后南美白对虾随着咀嚼活动的展开产生的信号增多,并且时频域特征明显与投饵前不同。该实验结果为利用南美白对虾产生的信号来控制投饵机实现按需投饵提供了可能。In order to explore the vocal characteristics and regularity of Penaeus vannamei feeding, the experiment is carried out under the environment of cultured shrimp pond, and the hydrophone and collector are used for acquiring signal. The spectrum analysis and time-frequency analysis of the signal are performed by Matlab software to obtain the regularity of Penaeus vannamei vocalization. Experiments show that in the freshwater aquaculture environment, the acoustic signals produced by Penaeus vannamei have certain regularity. The duration of a single pulse signal is 0.005 s and the frequency of the main peak is between 2~10 kHz. After feeding bait, the main peak frequency is expanded to about 5~15 kHz and the signals produced by the Penaeus vannamei increase with the spread of chewing activity, which makes the time-frequency domain characteristics of the signal significantly different before and after feeding. The result of this experiment shows the possibility of using the signal generated by Penaeus vannamei to control the feeding machine for on-demand feeding.

关 键 词：养殖塘 南美白对虾 发声信号 频谱分析 

分 类 号：TB561[交通运输工程—水声工程]