题目: Spawning, larval development and juvenile growth of the tropical sea cucumberHolothuria leucospilota

作者:Wen Huang+, Da Huo+, Zonghe Yu, Chunhua Ren, Xiao Jiang, Peng Luo, Ting Chen*, Chaoqun Hu*

刊物: Aquaculture

年卷期页: 2018,488:22-29

摘要：The tropical sea cucumberHolothuria leucospilota(Echinodermata: Holothuroidea) is one of the most widespread sea cucumber species with high economic value. To develop the artificial breeding methods ofH. leucospilota, we conducted thefirst detailed study on the processes of spawning, embryonic and larval development, and juvenile growth of the species. The results showed that the suitable breeding season ofH. leucospilotain the Daya Bay might be from June to October and that at least 30 days were needed for embryos to develop into juveniles at a temperature of 29？33 °C, a salinity of 27？30‰, and a pH of 7.9？8.2. The survival rate of the juveniles were approximately 8.5%, the average growth rate during days 31？49 of culture was 0.11mm per day and increased to 0.72mm per day during days 73？120. The body color of the juveniles was transparent yellow at approximately 55 days of culture, and it began to darken at 79 days later. These results indicated that an artificial culture method ofH. leucospilotawas realized. Our research might contribute a feasible way to the artificial breeding, natural resource restoration, and sustainable use of tropical sea cucumbers.