Welcome to the Lab

Evolution is the fundamental organizing principle of biology and phylogeny is the fundamental framework for understanding evolutionary history. Reconstructing the Tree of Life has been a goal of biologists since Darwin first included his conception of a phylogenetic tree as the sole figure in On the Origin of Species. However, the recognized importance of accurately reconstructing evolutionary history now extends far beyond the confines of evolutionary biology. Historical evolutionary inference has become an integral component of research in molecular biology, genomics, medicine, conservation, agriculture, epidemiology, and even forensics.

Our lab evaluates, creates, and applies phylogenetic methods to some of today's most pressing questions.

 

Study on Chorus Frog Hybridization Published in Ecology and Evolution

Jul
18

Chorus Frog (Pseudacris)In collaboration with the lab of Emily Lemmon at Florida State University, Dr. Brown and former LSU doctoral student Eric N. Rittmeyer spent several years sampling chorus frogs (Pseudacris fouquettei and P. nigrita) from a hybrid zone that occurs along the Pearl River, separating Louisiana and Mississippi. By comparing modern samples to tissue samples collected 40 years earlier and stored in the LSU Museum of Natural Science, they were able to show that the hybrid zone has stayed in roughly the same position but widened over the decades:

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Evolution 2016 Talks Online

Jun
23

Slides from several talks by Brown lab members at the 2016 Evolution meetings are now available online. Look here for links. Some talks should also have been recorded and will be uploaded to the Evolution 2016 YouTube channel in the future.

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Phyleaux Lab at Evolution 2016 in Austin!

Jun
15

The Brown lab will be well represented at the Evolution meetings in Austin starting this Friday (June 17th). Here are some presentations to look out for!

Genevieve Mount (talk) - Saturday, June 18th, 3:30-3:45 - Meeting Room 5 - "Can differences in model fit explain conflicting estimates of the Squamate tree of life?"

Jeremy Brown (talk) - Sunday, June 19th, 10:45-11:00 - Meeting Room 5 - "Climbing peaks and crossing valleys: Metropolis coupling and rugged phylogenetic distributions"

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Dr. Guifang Zhou to Join Phyleaux Lab as Postdoc

May
20

Dr. Guifang Zhou, a mathematician most recently at Florida State University, will be joining the Brown Phyleaux Lab in August 2015 as a postdoctoral researcher. Dr. Zhou, along with her Ph.D. advisor Dr. Kyle Gallivan and other graduate students at FSU, has been collaborating with the Brown Lab for several years on a project to leverage network-based mathematical methods for understanding the information in large sets of phylogenetic trees.

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Dr. Lyndon Coghill to Join Phyleaux Lab as Postdoc

Apr
29

Dr. Lyndon Coghill recently agreed to join the Brown Phyleaux Lab in August 2015 as a postdoctoral researcher. Dr. Coghill will be working on an NSF-funded project (DEB-1355071) to develop tools for assessing the fit between models and data in phylogenetics.

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Genevieve Mount Receives SSB Travel Award to go to Brazil

Apr
29

Phyleaux Lab graduate student, Genevieve Mount, recently received a travel award to attend a Society of Systematic Biologists (SSB)-sponsored workshop on "Model-Based Molecular Systematics" in Guarujá, Brazil as part of the 2015 Evolution meetings. Congratulations, Genevieve!

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Two Postdoc Positions Available

Feb
04

Two postdoctoral researcher positions are available in the computational evolutionary biology lab of Jeremy M. Brown at Louisiana State University. Research in the Brown lab is broadly centered on the use of phylogenetic approaches to understand organismal history and molecular evolution.

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CompBio Seminar - Feb. 11th - 5-6

Feb
03
The first talk of 2015 in the CompBio Seminar Series for Undergrads will be given by LSU math alum Dr. Stephanie Hicks on Wed., Feb. 11th from 5-6 in LSA A101. The title of her talk will be: “Why Statistics Matters in the Analysis of Genomics Data”. A social with food and drinks provided will follow in the LSA Atrium from 6-6:30.
 
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New paper on informed priors out in Systematic Biology

Feb
02

The Phyleaux Lab has a new paper available via Advance Access in Systematic Biology. This paper was spearheaded by Brad Nelson and explores the use of existing information (contained in other sequence datasets) to set informed branch-length priors for Bayesian phylogenetic analyses. The approach seems promising for branch lengths and may be applicable to other parameters in phylogenetic models. If interested, you can find the paper here:

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