期刊
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
卷 279, 期 1743, 页码 3678-3686出版社
ROYAL SOC
DOI: 10.1098/rspb.2012.0705
关键词
biodiversity discovery; cryptic species; echolocation; Hipposideros; species delimitation; taxonomy
资金
- NSF [DEB 0743491, 0640737, OISE 0965856]
- Field Museum's Brown Fund
- Negaunee Foundation
- Ontario Ministry of Research and Innovation fellowship
- Division Of Environmental Biology
- Direct For Biological Sciences [0640737, 743491] Funding Source: National Science Foundation
- Office Of Internatl Science &Engineering
- Office Of The Director [0965856] Funding Source: National Science Foundation
Prospects for a comprehensive inventory of global biodiversity would be greatly improved by automating methods of species delimitation. The general mixed Yule-coalescent (GMYC) was recently proposed as a potential means of increasing the rate of biodiversity exploration. We tested this method with simulated data and applied it to a group of poorly known bats (Hipposideros) from the Philippines. We then used echolocation call characteristics to evaluate the plausibility of species boundaries suggested by GMYC. In our simulations, GMYC performed relatively well (errors in estimated species diversity less than 25%) when the product of the haploid effective population size (N-e) and speciation rate (SR; per lineage per million years) was less than or equal to 10(5), while interspecific variation in N-e was twofold or less. However, at higher but also biologically relevant values of N-e x SR and when N-e varied tenfold among species, performance was very poor. GMYC analyses of mitochondrial DNA sequences from Philippine Hipposideros suggest actual diversity may be approximately twice the current estimate, and available echolocation call data are mostly consistent with GMYC delimitations. In conclusion, we consider the GMYC model useful under some conditions, but additional information on N-e, SR and/or corroboration from independent character data are needed to allow meaningful interpretation of results.
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