David Clark Labs 236
Ph.D., North Carolina State University (2008)
Reproductive Physiology and Aquaculture of Fishes
We aim to understand the fundamentals of oogenesis and egg quality in fishes. Poor egg quality is a major problem in finfish aquaculture that has remained intractable and causally unknown despite decades of research. We apply recent advances in functional genomics to address widespread female reproductive failure in fisheries and on commercial fish farms and to provide solutions to this problem.
Egg Yolk Formation
Developing offspring of oviparous animals are entirely dependent on stored egg yolk for nutritional sustenance. The nutrients stored in the ovulated egg must be sufficient to sustain the development of progeny from the time of fertilization to the onset of exogenous feeding. Vitellogenesis is the process whereby the required yolk nutrients are deposited into growing oocytes, which eventually give rise to eggs. These nutrients consist of maternally derived substances, including proteins, carbohydrates, lipids, vitamins, and minerals that are collectively transported from the liver to the ovary in the form of circulating yolk precursors called vitellogenins. We characterize this complex and fundamental process to better understand oogenesis and egg quality in commercially important fish species.
The goal of the National Program for Genetic Improvement and Selective Breeding for the Hybrid Striped Bass Industry is domestication and selective breeding to produce superior hybrid striped bass that will enable commercial producers not only to continue bringing fish to market, but also to decrease product prices and expand the industry. We are currently sequencing the striped bass and white bass genomes to further this effort.
- The effect of piscidin antimicrobial peptides on the formation of Gram-negative bacterial biofilms, JOURNAL OF FISH DISEASES (2022)
- Where Does Our Seafood Come From? (2022)
- Differential Bumble Bee Gene Expression Associated With Pathogen Infection And Pollen Diet (2021)
- Methods of domestic striped bass (Morone saxatilis) spawning that do not require the use of any hormone induction, AQUACULTURE (2021)
- The status of striped bass, Morone saxatilis, as a commercially ready species for US marine aquaculture, JOURNAL OF THE WORLD AQUACULTURE SOCIETY (2021)
- Threats to Food and Agricultural Resources (2021)
- Understanding the evolution of nutritive taste in animals: Insights from biological stoichiometry and nutritional geometry, ECOLOGY AND EVOLUTION (2021)
- Volitional tank spawning of domestic striped bass (Morone saxatilis) using human chorionic gonadotropin (hCG) and gonadotropin releasing hormone analogue (GnRHa)- induced 'pace-setting' females, AQUACULTURE (2021)
- Elevated levels of per- and polyfluoroalkyl substances in Cape Fear River Striped Bass (Morone saxatilis) are associated with biomarkers of altered immune and liver function, ENVIRONMENT INTERNATIONAL (2020)
- Evaluation via Supervised Machine Learning of the Broiler Pectoralis Major and Liver Transcriptome in Association With the Muscle Myopathy Wooden Breast, FRONTIERS IN PHYSIOLOGY (2020)