![(Reid Brennan)](https://i0.wp.com/www.molecularecologist.com/wp-content/uploads/2016/01/Brennan_Photo-1024x965.jpeg?resize=640%2C603)
(Reid Brennan)
This week we’re pleased to welcome a big group of new contributors to the blog. By way of introduction, I asked each of them to answer a few quick questions about him- or herself. —Jeremy
Who are you?
Reid Brennan
Where are you?
I’m a PhD candidate in Andrew Whitehead’s lab at the University of California Davis.
What do you study?
My work focuses on the mechanistic basis of local adaptation to abiotic environments. I work primarily on the killifish, Fundulus heteroclitus. These fish are typically found in marine habitats, but a few populations inhabit exclusively freshwater environments. I combine physiological, transcriptomic, and genomic approaches to understand how selection has shaped phenotypes in these different salinities.
What do you do when you’re not studying it?
When I’m not working I try to spend my free time enjoying the great landscape California has to offer. I like to backpack and hike as well as run, bike, and play soccer.