Vocalisation repertoire of female bluefin gurnard (Chelidonichthys kumu) in captivity: Sound structure, context and vocal activity

Fish vocalisation is often a major component of underwater soundscapes. Therefore, interpretation of these soundscapes requires an understanding of the vocalisation characteristics of common soniferous fish species. This study of captive female bluefin gurnard, Chelidonichthys kumu, aims to formally characterise their vocalisation sounds and daily pattern of sound production. Four types of sound were produced and characterised, twice as many as previously reported in this species. These sounds fit two aural categories; grunt and growl, the mean peak frequencies for which ranged between 129 to 215 Hz. This species vocalized throughout the 24 hour period at an average rate of (18.5 ± 2.0 sounds fish-1 h-1) with an increase in vocalization rate at dawn and dusk. Competitive feeding did not elevate vocalisation as has been found in other gurnard species. Bluefin gurnard are common in coastal waters of New Zealand, Australia and Japan and given their vocalization rate, are likely to be signi...鱼类发声往往是水下声景的核心组成部分。因此，解析此类水下声景需先明晰常见发声鱼类的发声特性。本研究以人工饲养的雌性蓝鳍鲂鮄（bluefin gurnard，学名*Chelidonichthys kumu*）为研究对象，旨在系统表征其发声信号与发声日节律模式。该物种共产生并被鉴定出4类发声信号，数量为此前该物种相关报道的两倍。这些发声信号可归为两类听觉范畴：咕哝声与低吼音，其平均峰值频率介于129 Hz至215 Hz之间。该物种在24小时内均有发声行为，平均发声速率为(18.5 ± 2.0)次·尾⁻¹·小时⁻¹，且在黎明与黄昏时段发声速率显著提升。与其他鲂鮄类物种的研究结果不同，竞争性摄食并未提升该物种的发声频次。蓝鳍鲂鮄广泛分布于新西兰、澳大利亚与日本的近岸海域，结合其发声速率来看，该物种极有可能成为（原文此处截断）