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People

David Ray - I consider myself to be a broadly trained evolutionary biologist.  I also taught high school Biology, Chemistry  and Physics before returning to graduate school and earning my PhD from Texas Tech University in 2002.  After that, I held postdoctoral and assistant professor positions at Louisiana State University, West Virginia University and Mississippi State University before returning to TTU as an associate professor. My research interests are in organismal and genome evolution with an emphasis on the impacts of transposable elements on both. My CV is available here.

 

Neal Platt - I am interested in the relationship between transposable elements and their effects on lineage-specific traits.  For example, recent DNA transposon activity in the vespertilionid bats resulted in the deposition of hundreds of miRNA-like sequences.  This period of activity/deposition corresponds with the rapid diversification of these bats.  Could these miRNAs-like sequences, and indirectly the DNA transposon activity, influenced this diversification?  A second area of interest is in applying genomic data and bioinformatic skills to address previously unanswerable questions in non-model taxa. We have a specific interest in understanding the small RNA repetoires in many non-model taxa.  Within the past 10-20 years multiple types of small RNA species have been discovered.  Usually these discoveries are made, and subsequent research focuses on mouse, human and Drosophila.  We are interested in exploring the diversity of these systems by taking advantage of non-model taxa.  For example, how different is the miRNA repertoire in horse vs. dog vs. bats vs. mouse.  Finally I am using genomic data diverse projects spanning the fields of conservation genomics, speciation genomics, and phylogenomics. http://www.batomics.com/

Cibele Caio - I have dedicated my academic career to the study of chromosomes and the role of karyotypic change in the speciation, diversification and adaptation of mammals. I started my training in cytogenetics at the Universidade Federal de Pernambuco (UFPE, Brazil) as an undergraduate researcher (2004 - 2006) and pursued it further during my Masters (2006 - 2008) in the same institution. I have recently graduated with a PhD in Biology under Dr. Robert Baker as my major advisor here at TTU.  The main focus of my PhD dissertation was to understand the chromosomal evolution of Phyllostomid bats and how chromosome change might have played a role in their adaptation and diversification. I have worked mainly using in situ hybridization of whole chromosome probes, as well as repetitive DNA, to identify chromosomal homologies among different phyllostomid species.  I have also correlated chromosomal data with those from dated molecular phylogenies to determine the rates and types of chromosomal rearrangements in major phyllostomid subfamilies. My research interests include the evolution of genome architecture of mammals and for my postdoctoral work at Dr. Ray's lab I will be investigating the differences in the trends of genome evolution and the role of transposable elements in shaping the genomes of bats from two distinct families, Phyllostomidae and Vespertilionidae.

Laura Blanco-Berdugo - In the Ray Laboratory I currently work with both Phormia. regina (blanck blow fly) and Heliconius erato (postman butterfly). We are interested in identifing transposable elements (TEs) in these insects.  I am also working with several elephant genomes and their TEs composition. we would like to eventually be able to tie the different TEs insertions, SINEs in particular, to different elephant taxa.

 

Carlos Garcia - My research in The Ray Laboratory will focus on working with a rare and potentially endangered species, the Texas kangaroo rat (Dipodomys elator). I am taking whisker samples as a noninvasive method to collect DNA and get a better understanding of the genetic structure of the species. This will also help determine the species’ distribution and evaluate whether the genetic structure is characterized by recognizable sub-populations. I am also working with a pair of vesprtilionid bats in in Louisiana, and I am trying to genetically differentiate the Southeastern myotis bat (Myotis austroriparius) and the Northern Long-Eared bat (Myotis septentrionalis) in order to assess the abundance and distribution of Myotis septrentrionalis in Louisiana.

 

Sarah Mangum - My research in Dr. Ray's laboratory will focus on exploring transposable element activity in the rodent family Sciuridae.  I will be focusing on insertions of the LINE-1 element in multiple taxa to explore the family's intriguing activity patterns. I have also worked on gene annotation in insects during the pursuit of my master's degree.

 

Austin OsmanskiRunning around the country as a kid in west Texas inspired me to pursue a life studying the natural world of biology. I earned my Undergraduate (2008-2012) and Masters (2012-2014) Degrees from Angelo State University where I conducted ecological field research on native herpetofauna in the Chihuahuan Desert. As a new doctoral student at Texas Tech, my biological interests have diversified with the guidance of my co-advisors Drs. David Ray and Lou Densmore. I recently ventured into the intriguing world of genomics and bioinformatics where I currently work on comparative structural variations of Myotis bat genomes to deduce evolutionary relationships.

 

Kevin Sullivan - My interest in the field of biology concerns genomic evolution due to transposable elements, both in how they impact genomes as well as their use as phylogenetic markers. My current project is aimed at identifying SINE subfamilies in Peromyscus maniculatus, which will be used as markers in uncovering the phylogenetic relationships in the Peromyscus genus. 

 

Jennifer KorstianMy interest in research was sparked while I worked on two undergraduate research projects through the Rice University & Houston Zoo Consortium for Conservation Biology.  After earning my bachelor’s degree from Rice, I continued to a master’s degree at Texas Christian University where I studied the population genetics of eastern red bats migrating through a North Texas wind farm.  For my doctoral work, I am venturing into the world of genomics.  Currently, I am working on two projects: 1) examining differential expression of transposable elements in three mammals (bat, mouse, & squirrel) and 2) using transposable elements to test for incomplete lineage sorting in Myotis bats.

 

Michaela Halsey - Originally from the mountains of Virginia, I attended Frostburg State University in Maryland from 2007 to 2013. Equipped with degrees in Wildlife (B.S., 2011) and Applied Ecology and Conservation Biology (M.S., 2013), my current goal is to integrate genomics tools and data with traditional conservation biology. I am investigating the intraspecific genetic variation in an enigmatic and Texas endemic kangaroo rat, Dipodomys elator, to better understand its population status and health. I also aim to add phylogenetic clarification to the genus using short interspersed elements (SINEs). On a more abstract level, I am curious how environment, historic and present-day, can shape and otherwise influence genomic landscapes, especially with respect to transposable elements. I am co-advised by Dr. Richard Stevens of the Department of Natural Resources Management here at Texas Tech University.  

David Ray

David Ray

Neal Platt

Neal Platt

 
Cibele Caio

Cibele Caio

 
Laura Blanco-Berdugo

Laura Blanco-Berdugo

Carlos Garcia

Carlos Garcia

Sarah Mangum

Sarah Mangum

Austin Osmanski

Austin Osmanski

Kevin Sullivan

Kevin Sullivan