首页|Seasonal Variation of Hearing Sensitivity in the Red-eared Slider(Trachemys scripta elegans)

Seasonal Variation of Hearing Sensitivity in the Red-eared Slider(Trachemys scripta elegans)

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Seasonal variation of hearing sensitivity has been observed in many vertebrate groups with obvious vocal behaviors.Circulating hormones,conspecific calling signals,and temperature are potential factors that drive these plasticity patterns.Turtles have a hearing range that appears to be limited to under 1.5 kHz and are often thought to be non-vocal;thus,they are commonly neglected in vocal communication research.In this study,we aimed to determine whether the auditory phenotype exhibits seasonal variation in sensitivity and to analyze the potential factors driving such variation patterns in turtles.We measured hearing sensitivity and sex hormone levels in female(estradiol)and male(testosterone and dihydrotestosterone)Red-eared sliders(Trachemys scripta elegans)during spring and winter.The results showed that auditory brainstem response(ABR)thresholds were significantly lower in spring than in winter at a frequency range of 0.5-0.9 kHz.The hearing-sensitivity bandwidth was wider,and the ABR latency was significantly shorter in spring than in winter.No significant differences were found in estradiol,testosterone,and dihydrotestosterone levels in T.scripta elegansbetween spring and winter.This study is the first to reveal the seasonal variation of peripheral hearing sensitivity in turtles,a special animal group with limited hearing range and less vocalization.Temperature variations may be used to explain these seasonal effects,but further research is required to confirm our findings.

auditory plasticityseasonal variationtemperatureturtles

Tongliang WANG、Jinxia YANG、Handong LI、Jinhong LEI、Haitao SHI、Jichao WANG

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Ministry of Education Key Laboratory for Ecology of Tropical Islands,Key Laboratory of Tropical Animal and Plant Ecology of Hainan Province,College of Life Sciences,Hainan Normal University,Haikou 571158,Hainan,China

Natural Science Foundation of Hainan ProvinceHighlevel Talent Project of the Hainan Natural Science FoundationNational Natural Science Foundation of ChinaSpecific Research Fund of the Innovation Platform for Academicians of Hainan Province

320QN256322RC66131860608

2024

10.3724/ahr.2095-0357.2023.0046

亚洲两栖爬行动物研究(英文版)
中国科学院成都生物研究所

亚洲两栖爬行动物研究(英文版)

影响因子：0.2
ISSN：2095-0357
年,卷(期)：2024.15(2)
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