Acoustic characteristics of synthesized signals of Chinese bahaba (Bahaba taipingensis)

Chong Wei,Ming Dai,Honghui Huang,Yu Zhang,Siyu Zhang,Jiali Huang

doi:10.1121/10.0003209

Chong Wei, Ming Dai + Show 4 more

Open Access

https://doi.org/10.1121/10.0003209

Copy DOI

Abstract

As a member of Sciaenidae, Chinese bahaba (Bahaba taipingensis) generate sounds using sonic muscles to drive the swim bladder. In this study, the drumming sounds of Chinese bahaba in two groups differing in body size were recorded in an indoor aquarium and an outdoor pond. A piecewise exponential oscillation function was developed to synthesize the signals with a good agreement. Statistical comparisons found that the oscillation frequency and damping coefficient (part 1) of synthesized signals from larger-sized fish were lower. The results suggest that the acoustic characteristics of Chinese bahaba signals are related to fish morphology as the physiological age alters.

Highlights

Chinese bahaba (Bahaba taipingensis), named the giant yellow croaker, is one of the largest of the croakers (Sciaenidae family) and has a limited geographical distribution
The results suggest that the acoustic characteristics of Chinese bahaba signals are related to fish morphology as the physiological age alters
Chinese bahaba has been listed as a Grade II State Protected Species in China since 19891 and has been classified as Critically Endangered (CR), facing an extremely high risk of extinction in the wild, by the International Union for Conservation of Nature (IUCN Red List) since 2006.1 Chinese bahaba has high commercial value because its swim bladder is commonly used in traditional Chinese medicine

Summary

Introduction

Chinese bahaba (Bahaba taipingensis), named the giant yellow croaker, is one of the largest of the croakers (Sciaenidae family) and has a limited geographical distribution. It can only be found in south China, from Pearl River. Zhang et al. used the passive acoustic monitoring (PAM) method to collect 246 acoustic signals from 96 individuals of B. taipingensis. They classified the signals into seven categories (drumming sounds, humming sounds, cracking sounds, clacking sounds, birds sounds, cha goo sounds, and other sounds) based on the characteristics extracted from the spectrum. Due to the rareness of this species, the information on the acoustic signal characteristics, sound production, and hearing mechanism is very limited, even though this information would be very important for the protection and conservation of this endangered species

Objectives

Methods

Results

Conclusion