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요약정보
长江鲟幼鱼的听觉阈值研究 / THRESHOLD OF THE JUVENILE ACIPENSER DABRYANUS DUMERIL
Resource Type
Academic Journal
Authors
项杰
;
邹巧林
;
杜浩
;
王成友
;
危起伟
;
XIANG Jie
;
ZOU Qiao-Lin
;
DU Hao
;
WANG Cheng-You
;
WEI Qi-Wei
Source
水生生物学报 / Acta Hydrobiologica Sinica
. 46(10):1563-1568
Subject
听性脑干反应
听觉阈值
长江鲟
Language
Chinese
ISSN
1000-3207
Online Access
Scopus
초록
试验采用室内噪声控制的方式模拟野外自然噪声环境,以长江鲟(Acipenser dabryanus Dumeril)幼鱼为实验对象,使用TDT听觉测试系统,在100—500 Hz的刺激频率下,通过听性脑干反应(Auditory Evoked Potential,AEP法)测定其听力阈值.结果显示,长江鲟的最敏感频率为300 Hz,声压为(133±0.5)dB,听力曲线呈"V"型,听觉阈值随着频率的不同而发生变化.总体看,长江鲟听觉阈值较高,听力较弱,不能听到500 Hz以上的声音,其中,长江鲟的听觉阈值与湖鲟和匙吻鲟等鲟鱼类基本相似,但比长江中常见的淡水鱼类的听觉阈值高、听频范围窄.研究结果将为长江鲟的野外放归和种群重建提供重要基础资料,为评价涉渔工程建设运行对长江鱼类的影响提供基础数据支撑.
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