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Mating sounds in the two-spotted goby, Pomatoschistus flavescens: Effects of water temperature on acoustic features
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Abstract(s)
Acoustic signals in teleost fishes play a fundamental role in reproduction. As fish are ectothermic animals, temperature has the potential to change their signal production and detection, with further implications for mating interactions. In this study, we describe the mating sounds made by the two-spotted goby, Pomatoschistus flavescens, for the first time and further investigate the effect of temperature on the acoustic features. Courtship sounds of 15 two-spotted goby males were recorded at three different temperatures: 16C, 19C, and 21C. As seen for other marine gobies, two-spotted goby produced two courtship sounds: drums and thumps. Drums showed similar acoustic features to other Pomatoschistus species already studied. Calling rates for both kinds of sound were not affected by the increases in temperature. However, pulse rate increased from 16Cto19C and stabilised between 19C and 21C, suggesting that two-spotted gobies reached their physiological limits at 19C. Spectral features were also affected by temperature, presenting higher values at 19C. Whether or not the observed changes in acoustic features with temperature lead to changes in mating remains to be addressed. Studies like the present one are fundamental to better comprehend how reproduction will be affected by global warming in soniferous fishes.
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Citation
Millot, M., Amorim, M. C. P., & Faria, A. M. (2023). Mating sounds in the two-spotted goby, Pomatoschistus flavescens: Effects of water temperature on acoustic featuresa). Journal of the Acoustical Society of America, 154(4), 2642–2652. https://doi.org/10.1121/10.0021888
Publisher
Acoustical Society of America