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New progress on acoustic communication in the concave-eared torrent frog and its revelation

Science Foundation in China 2007年第1期15卷 49-50页

作者： Shen Junxian State Key Laboratory of Brain and Cognitive Science Institute of Biophysics Chinese Academy of Sciences Beijing 100101

Animals have special solution to the problem of communication in high levels of background noise. A small group of vertebrates (bats,dolphins and whales,and some rodents) that use ultrasound for *** research first demonstrated that the concave-eared torrent frog is the first non- mammalian vertebrate found to be capable of pro- ducing and detecting ultrasounds for communica- *** study may provide a clue for understand- ing why humans have ear canals and how animals auditory systems have evolved,and inspire in de- veloping bionic tecnology for improving hearing in noise.

关键词： concave-eared torrent frog acoustic communication ultrasonic hearing background noise

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Morphological Correlates of the Phonatory Organ in an Ultrasonically Phonating frog

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Asian Herpetological Research 2012年第3期3卷 240-251页

作者： Rongchuan XIONG Bin WANG Yuhan WU Jianping JIANG Chengdu Institute of Biology Chinese Academy of Sciences Graduate University of Chinese Academy of Sciences College of Life Sciences Sichuan University Department of Life Science Liupanshui Normal College

The concave-eared torrent frog(Odorrana tormota) is the first species of tailless amphibian that was evidenced to phonate and detect ultrasounds. We employed anatomic and histological methods to examine the phonatory organs, including the floor of the buccal cavity, vocal cords and glottis, of O. tormota and its sympatric species including O. graminea, O. schmackeri, and Amolops wuyiensis with different fundamental frequencies, and Pelophylax nigromaculatus as a control. Our results reveal that O. tormota possesses specialized phonatory organ structures, with thinner vocal cords modulated by a moderately stronger muscular mastoideus between the medial vocal cords and the lateral cricoid cartilages, and more elastic mouth floor to likely supply faster air stream which could make the vocal cords vibrate at higher frequencies, larger relative distance between the two muscles m. intermandibulares(RDMI), and higher nucleus density of m. intermandibularis(NDMI) and m. geniohyoideus(NDMG). The results of Pearson’s correlation tests between the mean values of the above measurements and the fundamental frequencies from the five species imply that all the specialized phonatory organ structures mentioned above might be favored by higher frequency of phonation of O. tormota.

关键词： concave-eared torrent frog comparative anatomy ultrasonic phonation fundamental frequency

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