Effects of Temperature and Salinity on Podocyst Recycling of the Edible Jellyfish Rhopilema esculentum (Kishinouye, 1891)

As one of the edible jellyfish species, Rhopilema esculentum (Kishinouye, 1891) is a traditional fishery resource and an important economic aquaculture species in China. However, facing current situation natural resources exhaustion problems breeding population frequent disease, quantity, quality seedlings artificial cannot satisfy market demand. Temperature salinity have been considered to play crucial roles regulating R. asexual reproduction. This study examined combined effects by exposing post-preserved podocysts (preserved at 2 ± 1 °C for more than 12 months) three variable temperatures (simulated increasing from different starting dates 14.5 on April, 18 May, 23.2 July, respective levels) salinities (20, 25, 30). Podocyst excystment, start time strobilation, duration cumulative ephyra numbers were tested 45 days transfer rates ephyrae analyzed assess most optimal combination temperature salinity. The results showed that podocyst excystment production occurred all treatments. Higher lower significantly facilitated accelerated strobilation (p < 0.05). Significantly greater produced with (20 25) May levels There significant interactions between These suggested long-term preservation low could be recycled. regulation can affect number achieve high demand real-time seedling supply. conclusion would provide scientific basis innovative methods sustainable utilization (R. esculentum) resources.