Change search
ReferencesLink to record
Permanent link

Direct link
Phylogenomic Insights into the Cambrian Explosion, the Colonization of Land and the Evolution of Flight in Arthropoda
Stockholm University, Faculty of Science, Department of Zoology.
2013 (English)In: Systematic Biology, ISSN 1063-5157, E-ISSN 1076-836X, Vol. 62, no 1, 93-109 p.Article in journal (Refereed) Published
Abstract [en]

The timing of the origin of arthropods in relation to the Cambrian explosion is still controversial, as are the timing of other arthropod macroevolutionary events such as the colonization of land and the evolution of flight. Here we assess the power of a phylogenomic approach to shed light on these major events in the evolutionary history of life on earth. Analyzing a large phylogenomic dataset (122 taxa, 62 genes) with a Bayesian-relaxed molecular clock, we simultaneously reconstructed the phylogenetic relationships and the absolute times of divergences among the arthropods. Simulations were used to test whether our analysis could distinguish between alternative Cambrian explosion scenarios with increasing levels of autocorrelated rate variation. Our analyses support previous phylogenomic hypotheses and simulations indicate a Precambrian origin of the arthropods. Our results provide insights into the 3 independent colonizations of land by arthropods and suggest that evolution of insect wings happened much earlier than the fossil record indicates, with flight evolving during a period of increasing oxygen levels and impressively large forests. These and other findings provide a foundation for macroevolutionary and comparative genomic study of Arthropoda.

Place, publisher, year, edition, pages
2013. Vol. 62, no 1, 93-109 p.
Keyword [en]
Arthropod, Bayesian relaxed clock, Cambrian explosion, comparative genomics, macroevolution, phylogenomics, timing of divergence
National Category
Evolutionary Biology
URN: urn:nbn:se:su:diva-87682DOI: 10.1093/sysbio/sys074ISI: 000312895100007OAI: diva2:605883


Available from: 2013-02-15 Created: 2013-02-14 Last updated: 2013-02-15Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Wheat, Christopher W.
By organisation
Department of Zoology
In the same journal
Systematic Biology
Evolutionary Biology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 249 hits
ReferencesLink to record
Permanent link

Direct link