Current/Past Students







Current students/lab members

Ericah Beason

I obtained my BS in Wildlife Biology from Lees-McRae College (NC) where I worked closely with native freshwater mussels and their host fishes. I am now pursuing my MSc in Aquatic Resources at TXST where I research the impacts of zebra mussels on native unionids.




David Swearingen

I already joined the lab as an undergraduate students and assisted in surveys of freshwater mussels (native and invasive species).  I am now a MSc student and monitor the population dynamics of zebra mussels in Canyon Lake and examine the causes and impacts of mortality events.



Leah Woolam

I am currently a PhD student in the Aquatic Resources and Integrative Biology Program at TXST. I completed my BS and MS in Biology at Tarleton State University. My project explores the impact of disturbances on native unionid mussels.




Zachary Mitchell


PhD Candidate, distribution of freshwater mussels, drought responses, life history strategies.




Carolyn Trombley

VLUU L200 / Samsung L200

I am currently in the PhD program in Integrative Biology at the University of Guelph (co-advised by Dr. Schwalb and Dr. Cottenie) after having completing a Bachelor of Health Sciences at the University of Ottawa and a Bachelor of Environmental Science at the University of Guelph. My project explores metacommunity dynamics of fish in the Virgin River, with a focus on determining factors related to the decline of the endemic and critically endangered woundfin (Plagopterus Argentissimus).


Schwalb lab Alumni


Bianca Hernandez, graduated 2016                            Thesis: “Movement behavior of unionid mussels in Central Texas”

Sustainability Education Coordinator with Foundation Communities in Austin, TX




Jenae Olson, graduated 2016                            Thesis: “Dispersal of zebra mussels downstream of an invaded reservoir.”

Veterinary Technician, Sioux Falls, SD





Rebecca Zawalski, graduated 2017

Thesis: “Benthic macroinvertebrate metacommunity structure of the Guadalupe River Basin, TX.” 

Blue Thumb Field Educator at Oklahoma Conservation Commission





Ashley Seagroves, graduated 2017

Thesis “Reproductive ecology of Lampsilis bracteata (Bivalvia: Unionidae)”

Aquatic Biologist at the San Marcos Aquatic Resources Center (USFWS)



StaceyStacey Britton, graduated 2018

co-advised with Dr. Dutton

Thesis “Impact of environmental contaminants on the Threeridge mussel (Amblema plicata) in the Guadalupe River basin, Texas.”



Brittney Sanchez, graduated 2018

Thesis “Detectability affects the performance of survey methods: A comparison of sampling methods of freshwater mussels in Central Texas”




Alison Tarter, graduated 2019

Thesis “Distribution of unionid mussels in the Big Thicket region of Texas. Texas State University”

Kayla Hayes,  graduated  2020Kayla

Thesis “Comparing life history traits and responses to envrionmental variation between mussel species in the San Saba River”