Continuous progress in empirical population genetics based on whole genome polymorphism data requires the theoretical analysis of refined models in order to interpret the evolutionary history of populations with adequate accuracy. Recent studies focus prevalently on the aspects of demography and adaptation, whereas age-structure (e.g. in plants via the maintenance of seed banks) has attracted less attention. Germ banking, i.e. seed or egg dormancy, is a prevalent and important life-history trait in plants and invertebrates,...
Data from: A new method for handling missing species in diversification analysis applicable to randomly or non-randomly sampled phylogeniesNatalie Cusimano, Tanja Stadler & Susanne S. Renner
Chronograms from molecular dating are increasingly being used to infer rates of diversification and their change over time. A major limitation in such analyses is incomplete species sampling that moreover is usually non-random. While the widely used γ statistic with the MCCR test or the birth-death likelihood analysis with the ∆AICrc test statistic are appropriate for comparing the fit of different diversification models in phylogenies with random species sampling, no objective, automated method has been...
Data from: A total-evidence approach to dating with fossils, applied to the early radiation of the HymenopteraFredrik Ronquist, Seraina Klopfstein, Lars Vilhelmsen, Susanne Schulmeister, Debra L. Murray & Alexandr P. Rasnitsyn
Phylogenies are usually dated by calibrating interior nodes against the fossil record. This relies on indirect methods that, in the worst case, misrepresent the fossil information. Here, we contrast such node dating with an approach that includes fossils along with the extant taxa in a Bayesian total-evidence analysis. As a test case, we focus on the early radiation of the Hymenoptera, mostly documented by poorly preserved impression fossils that are difficult to place phylogenetically. Specifically,...
Data from: Distribution models and a dated phylogeny for Chilean Oxalis species reveal occupation of new habitats by different lineages, not rapid adaptive radiationChristoph Heibl & Susanne S. Renner
Among the World’s most challenging environments for plant life is the Atacama Desert, an arid zone extending over 1300 km and from sea level to 2000/3000 m along the southwestern Andean foothills. Plants there and in the adjacent Mediterranean zone exhibit striking adaptations, and we here use a species-rich such group to address the question whether adaptations arose in parallel, at different times, or simultaneously. Answering this type of question has been a major concern...
Data from: Molecular paleobiology of early-branching animals integrating DNA and fossils elucidates the evolutionary history of hexactinellid spongesGert Woerheide, Martin Dohrmann, Sergio Vargas, Dorte Janussen & Allen G. Collins
Reconciliation of paleontological and molecular phylogenetic evidence holds great promise for a better understanding of the temporal succession of cladogenesis and character evolution, especially for taxa with a fragmentary fossil record and uncertain classification. In zoology, studies of this kind have largely been restricted to Bilateria. Hexactinellids (glass sponges) readily lend themselves to test such an approach for early-branching (non-bilaterian) animals: they have a long and rich fossil record, but for certain taxa paleontological evidence...
Data from: Phylogeography, genetic structure and population divergence time of cheetahs in Africa and Asia: evidence for long-term geographic isolatesPauline Charruau, Carlos Fernandes, Pablo Orozco-TerWengel, Joris Peters, Luke Hunter, H. Ziaie, A. Jourabchian, H. Jowkar, Georges Schaller, Stephane Ostrowski, Paul Vercammen, Thierry Grange, Christian Schlötterer, Antoinette Kotze, Eva-Maria Geigl, Chris Walzer & Pamela A. Burger
The cheetah (Acinonyx jubatus) has been described as a species with low levels of genetic variation. This has been suggested to be the consequence of a demographic bottleneck 10 000–12 000 years ago (ya) and also led to the assumption that only small genetic differences exist between the described subspecies. However, analysing mitochondrial DNA and microsatellites in cheetah samples from most of the historic range of the species we found relatively deep phylogeographic breaks between...
Ludwig Maximilian University of Munich6
Natural History Museum1
University of Lisbon1
University of Veterinary Medicine Vienna1
Wildlife Conservation Society1
French National Centre for Scientific Research1
Panthera Biopartners (United States)1
Swedish Museum of Natural History1
Russian Academy of Sciences1