Image credits: B. Walther, J. Mohan, M. Seeley, B. Cutler, S. Smith, A. Montalvo. 

About the lab

Our lab conducts research on a variety of topics related to fish ecology, migration, habitat use and population connectivity. This work generally focuses on using the “natural tag” properties of carbonate hard parts in marine and diadromous fishes to examine patterns of migration, dispersal, and life history dynamics of species with mobile phases.  This field has grown exponentially in the past couple of decades, yet significant unknowns remain about highly migratory or dispersive species, particularly in the marine environment.  Otolith chemistry has the potential to reveal key information about identity and movement patterns that is essential for the effective management of exploited species and ecosystems. 

We are located at Texas A&M University - Corpus Christi in the Department of Life Sciences. We collaborate with the Texas Parks and WIldlife CCA Marine Development Center in Corpus Christi, TX for experimental work with larval and juvenile fishes. We also work closely with members of the University of Texas Jackson School of Geosciences, which houses an array of analytical instruments including laser ablation ICP-MS (multiple and single collectors), TIMS, and isotope ratio mass spectrometers.

Visit the page subsections for more information about our specific projects, lab members and opportunities to work in our lab.


  • We are RECRUITING for a PhD position!  Click HERE for more information.

  • Our lab was awarded a Research Enhancement Grant from TAMU-CC to expand our work on hypoxia effects on food webs of coastal fishes.
  • Former grad student John Mohan wins a travel award from the Estuaries Section of the American Fisheries Society to attend the annual AFS meeting, and writes a great essay about his work.
  • Grad student Matt Seeley wins a travel award to attend the 2016 ASLO/AGU Ocean Sciences Conference.  Congrats, Matt!

  • New "PROJECT HYPOXOLITH" website live!  Click to find out more about tracking hypoxia with otolith chemistry in the northern Gulf of Mexico.
  • Science & The Sea episode about our southern flounder research: "Migrant Flounder."