Rudi Mai

Author    Correspondence author
International Journal of Marine Science, 2025, Vol. 15, No.   
Received: 01 Jan., 1970    Accepted: 01 Jan., 1970    Published: 17 Oct., 2025

Oysters play a key role in the ecosystem and are also an important breeding shellfish, but their living environment faces multiple pressures such as salinity and temperature. Research in recent years has found that structural variants (SVs) are widely present in the oyster genome, including deletion, insertion, inversion, translocation and replication of large fragments. These structural variations not only increase the genetic diversity of oyster populations, but also play an important role in the environmental adaptive evolution of oysters by affecting gene dose and gene regulation. Based on the review of the characteristics of oyster genomes, this study focuses on discussing the types of genome structural variants, detection technology and their distribution characteristics in the oyster genome. Combined with environmental stress cases such as high salt, low oxygen and high temperature, it explains how structural variants affect gene expression and physiological phenotypes, thereby promoting the adaptation of oysters to environmental changes. Finally, the application prospects of oyster genome structural variation research in aquatic breeding, environmental monitoring and gene editing are prospected.