The otic gasbladder as an ancillary auditory structure in a mormyrid fish.
The otic gasbladder as an ancillary auditory structure in a mormyrid fish.
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耳气囊是斑尾鱼的辅助听觉结构。
DOI：
10.1007/s003590000114
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
Curtsinger,WS
中科院分区：
文献类型：
--
作者：
Yan,HY;Curtsinger,WS
长距离交流时使用声音信号，短距离交流时使用弱电场。长颌鱼的独特之处在于，它们的耳气囊直接附着在内耳两侧的球囊上。卡尔·冯·弗里施（1938）假设紧密耦合的耳气囊可能有助于莫米里德听力。为了验证这一假说，本研究以短吻长颌鱼（Brienomyrus brachyistius）为实验对象，通过对长颌鱼耳气囊内气体的处理，观察了长颌鱼耳气囊与内耳的解剖关系。用听性脑干反应测试仪测听曲线。从正常的鱼和鱼，其中气体是从一个或两个耳气囊撤出的听力图。从一个耳气囊气体的去除并没有导致一个显着的变化，无论是听力或声诱发的脑电波相比，控制鱼。双侧耳气囊放气导致显著的阈值变化。组织学切片显示耳气囊和球囊室之间特别密切的耦合。这些结果支持了冯·弗里施的假设，即长颌鱼的耳气囊有助于水下声音探测。
Mormyrid fishes use acoustic signals for long-distance communication and a weakly electric field for short-distance interaction. Mormyrids are unique in having an otic gasbladder attached directly to the saccule on each side of the inner ear. Karl von Frisch (1938) hypothesized that the tightly coupled otic gasbladder might aid mormyrid hearing. Using the mormyrid fish (Brienomyrus brachyistius), this study manipulated gas in the otic gasbladder to test this hypothesis and histological sections were made to examine the anatomical relationship between the gasbladder and inner ear. The hearing sensitivity curves (audiograms) were obtained with the auditory brainstem response protocol. Audiograms were obtained from normal fish and from fish in which gas was withdrawn from either one or two otic gasbladders. Removal of gas from one otic gasbladder did not result in a significant change in either hearing ability or acoustically evoked brainwaves as compared to the control fish. Bilateral deflation of the otic gasbladders led to significant threshold changes. Histological sections revealed a particularly close coupling between the otic gasbladder and the saccule chamber. These results support von Frisch's hypothesis that the otic gasbladders of mormyrids assist in underwater sound detection.