DESCRIPTIONS OF TWO NEW SPECIES OF RHYNCHOMYS THOMAS (RODENTIA: MURIDAE: MURINAE) FROM LUZON ISLAND, PHILIPPINES
DESCRIPTIONS OF TWO NEW SPECIES OF RHYNCHOMYS THOMAS (RODENTIA: MURIDAE: MURINAE) FROM LUZON ISLAND, PHILIPPINES
复制标题
菲律宾吕宋岛的两种新种斑鼠（啮齿目：鼠科：鼠亚科）的描述
DOI：
10.1644/06-mamm-a-090r.1
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发表时间：
2007
影响因子：
4.9
通讯作者：
L. Heaney
中科院分区：
文献类型：
--
作者：
D. Balete;E. Rickart;R. G. Rosell;S. Jansa;L. Heaney
摘要Rhynchomys是菲律宾啮齿动物的一个独特组合，具有原始特征和独特的形态特化。这些夜间活动的“鼩 鼱”，具有高度专门化的食虫和食虫习性，是吕宋岛特有的。外部，颅骨和牙齿特征的分析支持识别4种，其中2种在本文中进行了描述。它们都生活在高海拔地区，海拔约1,100米以上，分布在吕宋岛北方、西部和东南部的山地和苔藓森林中。栖息地vicariance和随后的分歧隔离是可能的模式，在Rhynchomys以及其他murid分支的成员仅限于高海拔栖息地的多样化。Rhynchomys当地特有物种的发现既证实了吕宋岛存在多个特有中心，也强调了在岛上建立和维持更多保护区的必要性。
Abstract Rhynchomys belongs to a unique assemblage of Philippine rodents that exhibit a combination of primitive features as well as unique morphological specializations. These nocturnal “shrew-rats,” with highly specialized vermivorous and insectivorous food habits, are endemic to Luzon Island. Analyses of external, cranial, and dental features support the recognition of 4 species, 2 of which are described in this paper. All are restricted to high-elevation habitats, about 1,100 m and above, in montane and mossy forest on northern, western, and southeastern Luzon. Habitat vicariance and subsequent divergence in isolation is the probable mode of diversification in Rhynchomys as well as in other murid clades whose members are restricted to high-elevation habitats. The discovery of locally endemic species of Rhynchomys both confirms the existence of multiple centers of endemism on Luzon and underscores the need to establish and maintain additional protected areas on the island.