Variation of the Chip Vocalization of Three Species of Townsend Chipmunks (Genus Eutamias)
Variation of the Chip Vocalization of Three Species of Townsend Chipmunks (Genus Eutamias)
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三种汤森花栗鼠（Eutamias属）的芯片发声变异
DOI：
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发表时间：
1989
期刊：
影响因子：
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通讯作者：
T. Lawlor
中科院分区：
文献类型：
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作者：
W. L. Gannon;T. Lawlor
声谱分析被用来确定来自北方加州和俄勒冈州的三种花栗鼠的声音变化模式。记录的报警叫声在Eutamias ochrogenys，E。senex和E. siskiyou。研究了E. ochrogenys由成对的音节组成，在地理上变化不大。E. senex是一个快速的音节序列，通常有三个或四个音节，最多有十个。E.与其他物种相比，西斯基尤的叫声具有单音节、更大的频率范围、更大的强度和更长的叫声持续时间。在物种边界的种群中，呼叫往往比位于物种范围中心的种群更有特色，变化更小。来自一个特定种群的叫声表明它可能含有杂交个体。再加上形态测量、生化和生殖骨研究的证据，我们对这三个Euutamias分类群的警报声的检查支持了它们作为不同物种的识别。此外，E. senex和E. ochrogenys似乎是较大的鳗鱼河，而不是短暂的货车Duzen河之前认为。
Sound spectrographic analysis was used to determine patterns of vocal variation in three species of chipmunks from northern California and Oregon. Recorded alarm-call vocalizations differed in Eutamias ochrogenys, E. senex , and E. siskiyou . The chip vocalization characteristic of E. ochrogenys consisted of paired syllables that varied little geographically. The call of E. senex was a rapid series of syllables that usually numbered three or four, with as many as 10. E. siskiyou produced a call with a single syllable, greater frequency range, greater intensity, and longer duration between calls than other species examined. Calls often are more distinctive and less variable in populations at species boundaries than in populations centrally located in species ranges. Calls from one particular population suggest that it may contain hybrid individuals. Together with evidence from morphometric, biochemical, and genital-bone studies, our examination of alarm calls in these three Eutamias taxa support their recognition as distinct species. In addition, the species boundary between E. senex and E. ochrogenys appears to be the larger Eel River rather than the ephemeral Van Duzen River as believed previously.