Conflict between nuclear and mitochondrial DNA phylogenies of a recent species radiation: What mtDNA reveals and conceals about modes of speciation in Hawaiian crickets
-
- Kerry L. Shaw
- Department of Biology, University of Maryland, College Park, MD 20742
Description
<jats:p> It has been asserted that recent mtDNA phylogenies support the plausibility of sympatric speciation, long considered a controversial mechanism of the origin of species. If such inferences are reliable, mtDNA phylogenies should be congruent with phylogenies based on other data. In previous work, a mtDNA phylogeny suggested that diversification of the Hawaiian cricket genus <jats:italic>Laupala</jats:italic> was initiated by single invasions into each of several Hawaiian islands, followed by multiple sympatric divergences within each island. In contrast, a systematic hypothesis based on morphology argues that speciation in <jats:italic>Laupala</jats:italic> has occurred primarily in allopatry, with two independent species radiations diversifying across the archipelago. In this study, I analyze nuclear DNA (nDNA) sequences from <jats:italic>Laupala</jats:italic> to compare with sequences from the mtDNA. The nDNA phylogeny corroborates the hypothesis of allopatric divergence and multiple invasions, and when compared with mtDNA patterns, suggests that interspecific hybridization is a persistent feature of the history of <jats:italic>Laupala</jats:italic> . The discrepancy between mtDNA and nDNA phylogenies reveals that speciation histories based on mtDNA alone can be extensively misleading. </jats:p>
Journal
-
- Proceedings of the National Academy of Sciences
-
Proceedings of the National Academy of Sciences 99 (25), 16122-16127, 2002-11-25
Proceedings of the National Academy of Sciences
- Tweet
Details 詳細情報について
-
- CRID
- 1363388843260161920
-
- ISSN
- 10916490
- 00278424
-
- Data Source
-
- Crossref