Research Interests

In the Heras Lab, we use genomics and environmental DNA (eDNA) approaches to study marine and freshwater fishes. Using genomes, transcriptomes, microbiomes, microplastics, and eDNA, we explore questions related to adaptations, digestive physiology, conservation, and exposure to pollution. We focus on the genetic variation of hemoglobin genes in marine fishes and how these variations support adaptations to different oceanic depths. Our research also investigates how gene copy number, gene expression patterns, and gut microbiomes contribute to dietary specializations. Through eDNA, we monitor marine species along the coasts of California and Washington, as well as freshwater habitats in Southern California, enabling us to track biodiversity, species distributions, and environmental impacts. Overall, our work provides insight into the molecular, evolutionary, and dietary processes in fishes, shedding light on how they adapt to their unique habitats.

The Heras Lab is part of the Department of Biology at CSU San Bernardino.  I am seeking highly motivated students at the undergraduate or masters level to join my lab.  If you are interested in joining the Heras Lab and studying questions in evolutionary genetics (especially on fishes), please contact me via email - Joseph.Heras'AT'csusb.edu