Transoceanic dispersal and plate tectonics shaped global cockroach distributions: evidence from mitochondrial phylogenomics

Bourguignon, Thomas, Tang, Qian, Ho, Simon Y.W., Juna, Frantisek, Wang, Zongqing, Arab, Daej A., Cameron, Stephen L., Walker, James, Rentz, David, Evans, Theodore A., and Lo, Nathan (2018) Transoceanic dispersal and plate tectonics shaped global cockroach distributions: evidence from mitochondrial phylogenomics. Molecular Biology and Evolution, 35 (4). pp. 970-983.

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Following the acceptance of plate tectonics theory in the latter half of the 20th century, vicariance became the dominant explanation for the distributions of many plant and animal groups. In recent years, however, molecular-clock analyses have challenged a number of well-accepted hypotheses of vicariance. As a widespread group of insects with a fossil record dating back 300 My, cockroaches provide an ideal model for testing hypotheses of vicariance through plate tectonics versus transoceanic dispersal. However, their evolutionary history remains poorly understood, in part due to unresolved relationships among the nine recognized families. Here, we present a phylogenetic estimate of all extant cockroach families, as well as a timescale for their evolution, based on the complete mitochondrial genomes of 119 cockroach species. Divergence dating analyses indicated that the last common ancestor of all extant cockroaches appeared similar to 235 Ma, similar to 95 My prior to the appearance of fossils that can be assigned to extant families, and before the breakup of Pangaea began. We reconstructed the geographic ranges of ancestral cockroaches and found tentative support for vicariance through plate tectonics within and between several major lineages. We also found evidence of transoceanic dispersal in lineages found across the Australian, Indo-Malayan, African, and Madagascan regions. Our analyses provide evidence that both vicariance and dispersal have played important roles in shaping the distribution and diversity of these insects.

Item ID: 53790
Item Type: Article (Research - C1)
ISSN: 1537-1719
Keywords: Dictyoptera, historical biogeography, insects, molecular clock
Copyright Information: © The Author(s) 2018. Published by Oxford University Press on behalf of the Society for Molecular Biology and Evolution. All rights reserved.
Additional Information:

Erratum: This issue published incorrectly into Volume 34 for the year 2017. The citation for each article incorrectly read:

Molecular Biology and Evolution, Volume 35, Issue 4, 1 April 2017

The issue has since been published correctly into Volume 35 for the year 2018. The citations for each article have been updated to read:

Molecular Biology and Evolution, Volume 35, Issue 4, 1 April 2018

Funders: Alliance National University of Singapore - Université Sorbonne Paris Cité, Czech Operational Programme Research, Development and Education (OP RDE), Czech Science Foundation (CSF), Internal Grant Agency of Faculty of Forestry and Wood Sciences (IGAFFWS), Czech University of Life Sciences - Grand Agency (CULS - GA), National Natural Sciences Foundation of China (NNSFC), University of Sydney, Australian Research Council (ARC)
Projects and Grants: OP RDE - EVA4.0 grant No. CZ.02.1.01/0.0/0.0/16_019/0000803, CSF project No. 15-07015Y, IGAFFWS CULS (IGA A11/16), CULS - GA project CIGA No. 20154320, NNSFC 31472026, NNSFC 31672329, ARC Discovery Project grant DP160104173, ARC Future Fellowship FT160100167, ARC Future Fellowship FT160100463
Date Deposited: 30 May 2018 07:36
FoR Codes: 31 BIOLOGICAL SCIENCES > 3104 Evolutionary biology > 310410 Phylogeny and comparative analysis @ 100%
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