Development and Evolution of the Mechanosensory Lateral Line System

My lab investigates the development and evolution of cranial sensory systems in fishes. In particular, we are interested in the development and evolution of the mechanosensory lateral line system. Over the years, we have focused on a variety of teleost fish taxa (butterflyfishes, zebrafish, flounders, cichlids, greenlings). Each of these taxa has interesting and unique attributes, which has allowed us to ask fundamental questions about evolution, patterns and mechanisms of development and functional morphology of the lateral line system. New projects are being added to our lab as new students and post-docs join our lab group.

Dermal Bone Remodeling and the Morphogenesis and Growth of the Lateral Line System
We have been using histochemical assays for osteoblasts and osteoclasts to detail cell-level patterns of lateral line morphogenesis and growth in post-embryonic zebrafish in order to discover the way in which lateral line canals are developmentally integrated into cranial dermal bones of the osteichthyan skull.

Genotype and Phenotype in the Lateral Line System
Using cichlid fishes, we will be carrying out collaborative studies on the development, adult morphology, genetics and behavioral significance of different lateral line morphologies.

The Laterophysic Connection in Butterflyfishes
We have described the comparative anatomy, development and systematic significance of the laterophysic connection, a unique swim bladder-lateral line linkage in butterflyfishes in the genus Chaetodon. Ongoing field work (Tricas Lab, U. Hawaii) is investigating sound production, hearing capabilities and the significance of the laterophysic connection in the social behavior of butterflyfishes in the field and in the lab. Supported by NSF grants to JFW and TCT. Link to Butterflyfish Project site.

Other ongoing projects:
-- Development of the lateral line system in elasmobranchs (dissertation project)
-- Evolution of lateral line meristics (senior research)