Cryptic genetic diversity in “widespread” Southeast Asian bird species suggests that Philippine avian endemism is gravely underestimated
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- 作者：David J. Lohman ; Krista K. Ingram ; Dewi M. Prawiradilaga ; Kevin Winker ; Frederick H. Sheldon ; Robert G. Moyle ; Peter K.L. Ng ; Perry S. Ong ; Luan Keng Wang ; Thomas M. Braile ; Dwi Astuti ; Rudolf Meier
- 关键词：Aves ; Biogeography ; DNA barcodes ; Endemism ; Phylogeography ; Southeast Asia
- 刊名：Biological Conservation
- 出版年：2010
- 出版时间：August 2010
- 年：2010
- 卷：143
- 期：8
- 页码：1885-1890
- 全文大小：503 K
文摘
Mistakenly classifying morphologically cryptic endemic species as populations of widespread species potentially interferes with the conservation of biodiversity because undetected endemics that are imperilled may lack appropriate protection. It also impedes the reconstruction of the evolutionary history of a taxon by obscuring the number and distributional limits of species. Here, we present genetic and phylogenetic evidence corroborated by morphology that Philippine populations of seven widespread, non-migratory passerine birds might represent unrecognized, distinct species. An extrapolation based on this finding suggests that the proportion of endemic bird species in the Philippines could be much higher than currently estimated. This high degree of cryptic diversity in a well-studied, volant taxon implies that large numbers of unrecognized species can be expected in less thoroughly studied groups. We predict that genetic investigations of insular populations of widespread species will frequently reveal unrecognized island endemics, and because of the vulnerability of island habitats and their biota, these taxa may be particularly susceptible to extinction.