Wang Zhiyuan, Wang Guodong, Ge Hui, Zhang Lili
State Key Laboratory of Mariculture Breeding, Fisheries College of Jimei University, Xiamen 361021, China.
Key Laboratory of Healthy Mariculture for the East China Sea, Ministry of Agriculture and Rural Affairs, Fisheries College of Jimei University, Xiamen 361021, China.
Aquac Nutr. 2025 Feb 28;2025:3196037. doi: 10.1155/anu/3196037. eCollection 2025.
The study analyzed the impact of different diets on the gonadal development of sea urchin . Kelp (), corn (), carrots (), and sweet potatoes () were used to continuously feed adults of for 50 days. Results indicated that sea urchins fed with kelp had the highest weight gain rate ( < 0.05), followed by those fed with sweet potato, no significant difference in weight gain rate was observed between other diets and no feeding groups ( > 0.05). fed with corn had a significantly enhancing GSI (gonadsomatic index) ( < 0.05), followed by those fed kelp, and no significant difference between the other diet groups, but their weight gain rate was higher than that of the no feeding group ( > 0.05). While there was no significant difference in shell diameter and height in any diets ( > 0.05). Sweet potatoes and corn significantly improved the redness (a ) and yellowness (b ) of the gonads ( < 0.05). Kelp group and corn group had excellent performance in amino acid composition, containing higher levels of umami and sweet amino acids than other groups ( < 0.05). Fatty acid analysis showed higher contents of eicosapentaenoic acid (EPA), arachidonic acid (ARA), linolenic acid, and linoleic acid in kelp and corn group. The types of diets significantly affected the microbial diversity of the digestive tract, with kelp enhancing microbial community diversity, and diets of corn and sweet potatoes increasing the abundance of . In conclusion, kelp was an excellent feed for , and corn as a preferred alternative diet not only improved the GSI but also optimized the gonad color and increased the content of amino acids and fatty acids.
该研究分析了不同饮食对海胆性腺发育的影响。使用海带（）、玉米（）、胡萝卜（）和红薯（）连续喂养成年海胆50天。结果表明，投喂海带的海胆增重率最高（<0.05），其次是投喂红薯的海胆，其他饮食组与不投喂组之间的增重率无显著差异（>0.05）。投喂玉米的海胆性腺指数（GSI）显著提高（<0.05），其次是投喂海带的海胆，其他饮食组之间无显著差异，但它们的增重率高于不投喂组（>0.05）。而在任何饮食组中，壳直径和壳高度均无显著差异（>0.05）。红薯和玉米显著改善了性腺的红色度（a*）和黄色度（b*）（<0.05）。海带组和玉米组在氨基酸组成方面表现优异，鲜味和甜味氨基酸含量高于其他组（<0.05）。脂肪酸分析表明，海带组和玉米组中二十碳五烯酸（EPA）、花生四烯酸（ARA）、亚麻酸和亚油酸的含量较高。饮食类型显著影响消化道的微生物多样性，海带可增强微生物群落多样性，玉米和红薯饮食可增加的丰度。总之，海带是海胆的优质饲料，玉米作为首选替代饲料不仅提高了性腺指数，还优化了性腺颜色，增加了氨基酸和脂肪酸含量。
