Post tagged: phylogeny

Tree balance signature of mass extinction is erased by continued evolution ...

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The kind and duration of phylogenetic topological “signatures” left in the wake of macroevolutionary events remain poorly understood. To this end, we examined a broad range of simulated phylogenies generated using trait-biased, heritable speciation probabilities and mass extinction that could be either random or selective on trait value, but ...

Evolutionary Dynamics of Local Pandemic H1N1/2009 Influenza Virus Lineages Revealed by Whole-Genome Analysis

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Virus gene sequencing and phylogenetics can be used to study the epidemiological dynamics of rapidly evolving viruses. With complete genome data, it becomes possible to identify and trace individual transmission chains of viruses such as influenza virus during the course of an epidemic. Here we sequenced 153 pandemic influenza ...

Evolutionary Pathways of the Pandemic Influenza A (H1N1) 2009 in the UK

Abtsract

The emergence of the influenza (H1N1) 2009 virus provided a unique opportunity to study the evolution of a pandemic virus following its introduction into the human population. Virological and clinical surveillance in the UK were comprehensive during the first and second waves of the pandemic in 2009, with extensive ...

Evolutionary Pathways of the Pandemic Influenza A (H1N1) 2009 in the UK

Abtsract

The emergence of the influenza (H1N1) 2009 virus provided a unique opportunity to study the evolution of a pandemic virus following its introduction into the human population. Virological and clinical surveillance in the UK were comprehensive during the first and second waves of the pandemic in 2009, with extensive ...

Species: demarcation & diversity

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Arguments about conservation are almost always arguments about species. Lists are compiled of endangered species, conservation schemes are prioritised on how many species are preserved, and legislation is phrased in terms of species. In the political economy of biodiversity, species are the currency. Despite this central role, the very ...

The impact of species concept on biodiversity studies

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Species are defined using a variety of different operational techniques. While discussion of the various methodologies has previously been restricted mostly to taxonomists, the demarcation of species is also crucial for conservation biology. Unfortunately, different methods of diagnosing species can arrive at different entities. Most prominently, it is widely ...