Category Archives: species delimitation

Rooting eukaryotes in the Arctic Ocean

Posted on 14 May, 2015 by Arun Sethuraman

While the general consensus has centered around the evolution of eukaryotes within the TACK superphylum of Archaea (Thaum-, Aigar-, Cren-, and Kor-archaeota), considerable controversy yet remains with (a) the rooting of the eukaryote common ancestor, and (b) ‘missing’ links in … Continue reading →

Posted in evolution, metagenomics, speciation, species delimitation | Tagged , , | Leave a comment

Breaking free of the guide tree: two new species delimitation methods

Posted on 9 Feb, 2015 by Melissa DeBiasse

A couple of weeks ago I wrote about a new method to incorporate morphology and DNA sequences into species delimitation. Including both data types improved the results but a couple of tricky spots remained: 1) correctly assigning individuals to putative species and 2) estimating … Continue reading →

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Incorporating phenotype and genotype in model-based species delimitation

Posted on 26 Jan, 2015 by Melissa DeBiasse

  Species are the fundamental unit of biology but identifying them is a challenging task that receives a lot of theoretical and empirical attention. In a recent Evolution paper, Solís‐Lemus et al. (2015) introduce a new model-based method that integrates phenotypic and genetic data … Continue reading →

Posted in methods, speciation, species delimitation, theory | 2 Comments