Development of tools for the sustainable management of genetics in polyploid Pacific oysters (Crassostrea gigas) ...

• Main Author: Miller, PA
• Format: Thesis
• Language: unknown
• Published: University Of Tasmania 2023
• Subjects: Pacific; Crassostrea gigas
• Online Access: https://dx.doi.org/10.25959/23242454; https://figshare.utas.edu.au/articles/thesis/Development_of_tools_for_the_sustainable_management_of_genetics_in_polyploid_Pacific_oysters_Crassostrea_gigas_/23242454

The commercial production of triploid Pacific oysters (Crassostrea gigas) has grown rapidly in recent years. There is now a push to move away from commonly used mass spawning techniques towards single pair cross selective breeding programs in an effort to improve growth and disease resistance within the triploid product. Before this can be achieved, there is a need to understand some of the fundamental genetics behind polyploid production and to develop molecular tools and techniques that can be used in establishing breeding programs. This dissertation developed and utilised suites of microsatellite markers to determine the baseline diversity of native, naturalised and cultured diploid oysters. It was found that the high diversity within naturalised oysters may provide a genetic reservoir for future breeding programs. The same microsatellite markers were used to determine diversity and pedigree assignment within a mass spawned tetraploid population across two successive generations. The first generation ...