断鸣管神经支对白腰文鸟鸣声的影响  

Effects of Section NXIIts on Call and Song in White-Rumped Munia(Lonchura striata)

作　　者：林桂霞[1] 郑志强[1] 吕源[1] 王松华[1] 王怡淳[1] 吴敏[1] 李东风[1] 

机构地区：[1]华南师范大学生命科学学院,广州510631

出　　处：《华南师范大学学报（自然科学版）》2014年第4期76-81,共6页Journal of South China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(31172092)

摘　　要：为探究鸣管神经支(NXⅡts)对发声控制的作用以及验证鸣禽发声的侧别优势和性别差异,以成年白腰文鸟为实验材料,记录其正常鸣声及切断鸣管神经支后的鸣声.用Cool Edit Pro和Wavesurfer等声音处理和分析软件,比较和分析雄鸟和雌鸟、断单侧和双侧鸣管神经前后声学特征的差异.结果表明,成年白腰文鸟的NXⅡts可单侧支配鸣肌,切断左侧NXⅡts将导致声音严重受损,对断右侧则影响不大,表明具有左侧优势.两侧NXⅡts既相互协调又各有侧重,左侧产生较高频率的声音,而右侧则有较高的熵值,使得音节稳定性和调频一致性增强.雄鸟左侧NXⅡts控制较高的音量和较长的音节,而雌鸟的音量和音节时长两侧均可以独立调节.断双侧神经对音量、音调和音色都产生明显影响.In order to explore the effect of NXIIts on vocal control, and to prove the lateral and sexual differences of vocalization in songbirds, this study recorded the sounds of normal and after section of NXIIts in adult White- lumped Munia. The software, Cool Edit Pro and Wavesurfer, were used to compare and analyze the acoustic pa- rameters before and after section of unilateral and bilateral syrinx nerve. The results showed that the NXIIts have unilateral control to syrinx muscle, section of left syrinx nerve lead to severely sound damaged , but section of right syrinx nerve have little effect, showed the left dominance in neural innevation. Both sides of NXIhs coordinated and are independent each other, and the control of left NXIIts was stronger than that of the right NXIIt. The left syrinx nerve control the frequency, and the right syrinx nerve produces higher entropy, to keep sound stability and FM consistency. Left syrinx nerve can produce high volume and long syllables in males, and the volume and syllable duration on both sides can be adjusted independently in females. Bilateral section of NXIIts significantly affects vol- ume, tone and timbre.

关 键 词：白腰文鸟 鸣管神经 左侧优势 性别差异 

分 类 号：Q62[生物学—生物物理学]