Three acoustic forms of Allen's galagos (Primates; Galagonidae) in the Central African region
Three acoustic forms of Allen's galagos (Primates; Galagonidae) in the Central African region
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DOI：
10.1007/s10329-002-0004-x
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发表时间：
2003-01-01
期刊：
影响因子：
1.7
通讯作者：
Ambrose, L
中科院分区：
文献类型：
--
作者：
Ambrose, L
这项研究确定了目前被归类为艾伦的galago（Galago alleni）在加蓬，喀麦隆和比奥科岛的10个地点的人口。种群内和种群间的形态多样性都很明显。注意大声呼叫揭示了三个不同的声音配置文件是一致的地理区域内。这项工作是基于识别概念的物种，这是指一个特定的配偶识别系统。与昼行的灵长类动物相比，加拉戈斯更少依赖视觉信号，主要通过听觉和嗅觉信号相互识别。加拉戈斯拥有与接触和警报有关的大声呼叫的剧目，这些被认为是物种特异性的。其他对夜行原猴亚目（galagos tarsiers）的研究表明，独特的大声叫声是物种边界的可靠指标;而身体大小和皮毛颜色等特征是高度可变的，即使在种群内也是如此。在这项研究中的声乐数据提供的证据，至少有三个声学形式的galago内的艾伦的组，预计代表三个不同的物种：艾伦的形式在比奥科岛和喀麦隆西南部，加蓬形式在喀麦隆南部和北方加蓬和Makande形式在加蓬南部的奥果韦河。由于分布有限和栖息地破坏，一些种群可能容易灭绝。
This study identifies populations currently classified as Allen's galago (Galago alleni) at ten locations in Gabon, Cameroon and Bioko Island. Morphological diversity was evident both within and between populations. Attention to the loud calls revealed three distinct vocal profiles which are consistent within biogeographical regions. This work is based on the Recognition Concept of Species which refers to a Specific Mate Recognition System. Galagos rely less on visual signals than diurnal primates and recognise each other principally by means of auditory and olfactory signals. Galagos possess repertoires of loud calls relating to contact and alarm which are thought to be species-specific. Other studies of nocturnal prosimians (galagos tarsiers) have demonstrated that the unique loud call repertoires are reliable indicators of species boundaries; whereas characters such as body size and pelage coloration are highly variable, even within populations. The vocal data in this study provide evidence of at least three acoustic forms of galago within the Allen's group which are predicted to represent three distinct species: the Allen's form on Bioko Island and south-west Cameroon, the Gabon form in southern Cameroon and northern Gabon and the Makande form in Gabon south of the Ogooue river. Some populations may be vulnerable to extinction due to limited distributions and habitat destruction.