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Bill Morphology Does Not Influence Vocal Performance in Darwin’s Small Tree Finch on Floreana Island
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作者 Rebekah Christensen Sonia Kleindorfer 《Zoological Research》 CAS CSCD 北大核心 2009年第4期423-428,共6页
Bird song is used for mate attraction and is important for establishing reproductive isolation. Current research highlights performance constraints on song production that may be influenced by variation in bill morpho... Bird song is used for mate attraction and is important for establishing reproductive isolation. Current research highlights performance constraints on song production that may be influenced by variation in bill morphology. Darwin's finches are a model system for studying the relationship between morphology and song performance, with previous studies suggesting that lower vocal performance is correlated with larger bill size. Here, we tested for a relationship between bill morphology and vocal performance in Darwin's Small Tree Finch (Camarhynchus parvulus) on Floreana Island. We found no evidence of a correlation between bill morphology and vocal performance. This finding is in agreement with prior study of the Small Tree Finch, but contrasts a greater body of work addressing song in Darwin's Finches. We discussed our findings in the context of ecological divergence, and ecological variation across species. 展开更多
关键词 Darwin's finches Bill morphology Small Tree Finch SONG vocal performance
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Vocal performance reflects individual quality in male Great Himalayan leaf-nosed bats(Hipposideros armiger)
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作者 Congnan SUN Chunmian ZHANG +3 位作者 Jeffrey RLUCAS Hao GU Jiang FENG Tinglei JIANG 《Integrative Zoology》 SCIE CSCD 2022年第5期731-740,共10页
Signals containing parameter trade-offs are likely to be honest indicators of signaler quality because they are difficult to produce.Signals with a trill-rate/bandwidth trade-off have been described for many songbird s... Signals containing parameter trade-offs are likely to be honest indicators of signaler quality because they are difficult to produce.Signals with a trill-rate/bandwidth trade-off have been described for many songbird species,one mouse,and one non-human primate species.However,there were no reports about whether there is a vocal performance trade-off in social calls of bats.This study investigated(1)a possible vocal performance trade-off in territorial calls of male Great Himalayan leaf-nosed bats,Hipposideros armiger,recorded from 9 locations in south China,and(2)the relationships between vocal performance(vocal deviation and consistency)and caller’s quality(body mass)to determine whether vocal performance honestly indicates a caller’s quality.Vocal deviation measures the deviation of a call relative to an extreme call and vocal consistency measures the spectral consistency across a string of syllables.Our results showed a significant negative correlation between syllable repetition rate and frequency bandwidth,suggesting a vocal performance trade-off similar to the one in songbirds.Further,there was a significant negative relationship between body mass and vocal deviation,but no significant correlation between body mass and vocal consistency.This study provides thefirst empirical evidence for a vocal performance trade-off of social calls in bats,and the potential for the level of performance to indicate caller quality. 展开更多
关键词 bats male quality territorial calls trade-off vocal performance
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Analysis on the Enlightenment from Comprehensive Musicianship Course on the Teaching of Vocal Music Performance
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作者 Lihua PING 《International Journal of Technology Management》 2013年第11期67-69,共3页
Excavation to creativity is one of important means in the teaching process. Comprehensive musicianship course is an experimental teaching method, but also a teaching art form in the music education system. Many achiev... Excavation to creativity is one of important means in the teaching process. Comprehensive musicianship course is an experimental teaching method, but also a teaching art form in the music education system. Many achievements have been made to comprehensive musicianship course since the experimental teaching was established in China. The influence scope of comprehensive musicianship course is constantly expanded in the field of social music teaching, and simultaneously its influencing power is also rising. However, it should be implemented in the process of teaching according to the actual circumstances of the primary and secondary school students in China. In the teaching of comprehensive musicianship course, vocal music performance is applied as the main carrier in form and proceeds very rhythmically in the process of the whole time, and also thoughts and emotions are fully reflected by body languages. It starts from the comprehensive learning, and then is gradually promoted between non-major courses in institutions of higher learning and the music teaching in primary/secondary schools, so that a good teaching effect has been obtained. In comprehensive musicianship course, high importance is attached to the improvement of students' creativity and innovation ability. In this paper, the enlightenment from comprehensive musicianship course on China' s vocal music performance teaching is mainly analyzed. 展开更多
关键词 Comprehensive Musicianship Course vocal Music performance ENLIGHTENMENT
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