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ARS Home » Southeast Area » Stoneville, Mississippi » Warmwater Aquaculture Research Unit » People » Geoffrey Waldbieser

Geoffrey C Waldbieser (Geoff)

Research Molecular Biologist


We have developed and now use DNA-based identification of catfish to produce pedigreed research populations. Identification of catfish individuals and families permits co-culture at an early age, and this reduces environmental effects that confound estimates of genetic potential. We have also sequenced the channel and blue catfish genomes to aid the identification of genetic variation throughout the genomes. We have genotyped Delta Select catfish for ~50,000 single nucleotide variants throughout the genome to improve the accuracy of estimated breeding values of Delta Select broodstock. We also collaborate with microbiologists on genome-based analyses to better understand the beneficial and pathogenic microorganisms that affect catfish production.