Differentiation of courtship songs in parapatric sibling species of dwarf stonebashers from southern Africa (Mormyridae, Teleostei)
Differentiation of courtship songs in parapatric sibling species of dwarf stonebashers from southern Africa (Mormyridae, Teleostei)
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南部非洲侏儒石击鸟的近亲兄弟物种（Mormyridae、Teleostei）求偶歌曲的分化
DOI：
10.1163/156853906777791360
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发表时间：
2006
期刊：
影响因子：
1.3
通讯作者：
B. Kramer
中科院分区：
文献类型：
--
作者：
Michael Lamml;B. Kramer
我们描述了夜间求爱的歌曲男性侏儒石霸，Pollimyrus castelnaui，从奥卡万戈河及其内陆三角洲。我们研究的问题是，这些歌曲是否与其近缘兄弟物种（最近发现的唯一来自赞比西河上游的P. marianne）的歌曲有足够的区别，以形成择偶的潜在线索。这两个物种在求爱时发出两种声音，呻吟和咕噜，它们以类似的方式组合成长歌。然而，有一种声音类型是明显不同的：卡斯特瑙氏原羚的呻吟声具有沙哑的音质，由三个或四个宽带共振峰组成，而玛丽安氏原羚的呻吟声更具音调，第一个共振峰和任何更高的共振峰都由一条谱线主导（第一个共振峰的主频带宽较小，为BW−10 dB）。卡氏原羚的呻吟和咕噜声持续时间和呻吟脉冲群周期（mPGP）较长，后者的变化更大（mPGP的范围：卡氏原羚为10-30 ms，玛丽安原羚为7-16.7 ms）。卡氏棘胸蛙的呼噜声持续时间较长，由更多的脉冲组成。奥卡万戈河和赞比西河之间的接触区，宽多河下游的一只雄性在呻吟BW-10 dB方面类似于P. castelnaui，但在呻吟持续时间和mPGP方面类似于P. marianne。这两个非洲南部的物种，因此发声在一个物种特有的方式。由于在这两个物种的几个特点的呻吟声和呼噜声显示高之间和低内男性的变异性，配偶的选择可能是有选择性的个别高品质的男性特征的声学功能。
We describe the nocturnal courtship songs of male dwarf stonebashers, Pollimyrus castelnaui, from the Okavango River and its inland delta. We examined the question of whether the songs are sufficiently differentiated from those of its parapatric sibling species, the only recently discovered P. marianne from the Upper Zambezi River, to form a potential cue for mate choice. Both species vocalised two sound types in courtship, the moan and the grunt, which they combined into long songs in similar fashion. However, one sound type was clearly differentiated: while P. castelnaui moans were of a husky quality and composed of three or four broadband formants, P. marianne moans were more tonal, with a single spectral line dominating the first and any higher formants (and a smaller bandwidth BW−10 dB for the dominant frequency of the first formant). Moan and Grunt Duration and the moan Pulse Group Period (mPGP) were longer, and the latter more variable, in P. castelnaui compared to P. marianne (range of mPGP: 10-30 ms in P. castelnaui, 7-16.7 ms in P. marianne). P. castelnaui grunts were of longer duration and composed of more pulses than those of P. marianne. A single male from the contact zone between the Okavango and the Zambezi, the lower Kwando River, resembled P. castelnaui in moan BW−10 dB but P. marianne in Moan Duration and mPGP. Both southern African species thus vocalise in a species-specific fashion. Since in both species several characteristics of both moans and grunts show high between- and low within-male variability, mate choice may be selective for individual high-quality males characterised by acoustic features.
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DOI：
10.1242/jeb.202.10.1417
发表时间：
1999
期刊：
The Journal of experimental biology
影响因子：
--
作者：
Crawford,JD;Huang,X
通讯作者：
Huang,X
发声电鱼（Pollimyrus）的听觉辨别：音调频率和点击率差异检测。
DOI：
10.1121/1.1287845
发表时间：
2000
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Marvit,P;Crawford,JD
通讯作者：
Crawford,JD
发声电鱼（Pollimyrus）的听觉阈值：对音调和咔嗒声敏感性的行为测量。
DOI：
10.1121/1.428501
发表时间：
2000
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Marvit,P;Crawford,JD
通讯作者：
Crawford,JD
发声鱼类（Mormyridae）的声学检测：充气鼓囊的作用。
DOI：
10.1242/jeb.204.2.175
发表时间：
2001
期刊：
The Journal of experimental biology
影响因子：
--
作者：
Fletcher,LB;Crawford,JD
通讯作者：
Crawford,JD