Joseph Matt

Ph.D. Student

Email: [[v|jlmatt]]
Office: Andrews Hall 410
Unit: Aquaculture Breeding & Genetics Technology Center
Advisor: {{,Dr. Stan Allen}}

  • B.Sc., Biology, Wake Forest University, 2013
  • M.S., Fisheries Science, William & Mary, 2018
Research Interests

Selective breeding, polyploidy, aquaculture, oysters, quantitative genetics, genomics


I've aimed to improve the viability of oyster aquaculture by investigating problems faced by the industry and addressing questions important to selection and breeding. Specifically, my research has included the following: implications of chromosome loss in commercial tetraploid brood stock, evaluation of possible genetic and physiological causes of mass mortality, and most recently, evaluating genetic parameters in triploid oysters.

Current Projects
  • The genetic basis of “triploid mortality” in triploid Crassostrea virginica
  • The relationship among “triploid mortality”, gonad development, and biochemical composition in triploid C. virginica
  • Matt, JL and S.K. Allen, Jr. 2021. A classification system for gonad development in triploid Crassostrea virginica. Aquaculture 532, 735994.
  • Matt JL, Guévélou E, Small JM, Allen Jr SK. A field test investigating the influence of brood stock origin and ploidy on the susceptibility of Crassostrea virginica to “triploid mortality” in the Chesapeake Bay. Aquaculture. 2020 Apr 15:735375.
  • Guevelou E, Matt JL, and Allen SK. 2017. Glycogen concentration in freeze-dried tissues of eastern oyster (Crassostrea virginica) using near infrared reflectance spectroscopy to determine the relationship between the concentrations of the tissues excised for histological sampling and the remaining tissues.  Journal of Shellfish Research. 36.2 : 325-333.
  • de Sousa JT, Allen SK, Baker H, Matt JL. 2016. Aneuploid progeny of the American oyster, Crassostrea virginica, produced by tetraploid × diploid crosses: another example of chromosome instability in polyploid oysters. Genome. 59: 327–338.
  • Matt JL and Allen SK. 2014. Heteroploid mosaic tetraploids of Crassostrea virginica produce normal triploid larvae and juveniles as revealed by flow cytometry. Aquaculture. 432: 336-345.