抄録
Research on the spawning season of Takifugu alboplumbeus has been conducted in various regions, however no studies have been conducted on this species in Osaka Bay. This study aims to investigate the maturation of T. alboplumbeus in the estuarine area of Onosato River, located in the southern part of Osaka Bay, and to provide insights into their life history. In this study, the spawning season was considered to be from April to June, based on changes in the gonadosomatic index (GSI). In addition, hepatosomatic index decreases during the spawning season and recovers after spawning, suggesting that it is related to maturity. The minimum standard length to attain sexual maturity in this species was 72.7 mm (GSI: 10.5 %) for male and 87.7 mm (GSI: 15.4 %) for female.
https://ror.org/05wr49d48 
