Things fall apart: biological species form unconnected parsimony networks

Biology Letters - Tập 3 Số 5 - Trang 509-512 - 2007
Michael W. Hart1,2,3,4, Jennifer M. Sunday1,2,3,5
1Department of Biological Sciences, Simon Fraser University8888 University Drive, Burnaby, British Columbia, Canada V5A 1S6
2Find this author on PubMed
3Google Scholar
4Michael W Hart
5Jennifer Sunday

Tóm tắt

The generality of operational species definitions is limited by problematic definitions of between-species divergence. A recent phylogenetic species concept based on a simple objective measure of statistically significant genetic differentiation uses between-species application of statistical parsimony networks that are typically used for population genetic analysis within species. Here we review recent phylogeographic studies and reanalyse several mtDNA barcoding studies using this method. We found that (i) alignments of DNA sequences typically fall apart into a separate subnetwork for each Linnean species (but with a higher rate of true positives for mtDNA data) and (ii) DNA sequences from single species typically stick together in a single haplotype network. Departures from these patterns are usually consistent with hybridization or cryptic species diversity.

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Tài liệu tham khảo

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Thông tin
Thông tin xuất bản

Biology Letters

Tập 3 Số 5

509-512

Thông tin tác giả