Quantitative Traits and Reproductive Cycle of Snail Strombus luhuanus
LU Wanting1, CEN Xitong2,3, YU Zonghe1, HE Maoxian3, LIU Wenguang2,3
1. College of Marine Sciences, South China Agricultural University, Guangzhou 510642, China; 2. Xisha Marine Environment National Observation and Research Station, Hainan, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 3. Key Laboratory of Tropical Marine Bio-resources and Ecology, Chinese Academy of Sciences, Guangzhou 510301, China
Abstract：In order to probe the reproductive habits of the high-economic value snail Strombus luhuanus, gonadal development was systematically observed in 30—50 samples [body weight (34.57±1.33) g] collected monthly in the Xisha waters of Hainan Province throughout the year from December 2023 to November 2024, and the influence mechanism of morphological traits on quality traits was analyzed by correlation analysis, path analysis, and multiple regression. Additionally, gonadal development was histologically observed in 20 samples monthly collected from April to June 2024. The reproductive cycle was found to be divided into five key stages: the proliferation stage, growth stage, maturation stage, spawning stage, and resting stage, with the basically synchronous development in both male and female individuals, gradually increase in oocyte diameter with the maturation of the gonad and the maximum before spawning. The trait observation showed that there were highly significant correlations between multiple morphological traits and quality traits of S. luhuanus, in which shell width and body whorl height were the core morphological indicators determining body weight and soft tissue weight. It is recommended to select individuals with large shell width, high body whorl height, and great body weight as breeding parents in April to June. The findings deepen the understanding of the reproductive biological characteristics of S. luhuanus and provide a scientific basis with the development of artificial breeding techniques and the protection of germplasm resources.
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2026, Vol. 45 
