The potential use of polychaetes as feed for mud crabs and to bioremediate highly underexploited nutrient‐rich aquaculture waste was evaluated in this study. Food preference of mud crabs (Scylla olivacea) given two polychaete species, namely Namalycastis sp. (Nereididae) and Eunice reticulata, was first determined prior to elucidating the growth, survivorship and fatty acid composition of the selected polychaetes cultivated using fish culture waste (FCW). The effect of water temperature on the sexual maturation of selected polychaetes was also evaluated. Mud crabs fed on both polychaete species but a preference for Namalycastis was observed. Namalycastis fed FCW experienced lower survivorship (16.7%–58.3%) than those in control treatments of either fish feed or no feed (41.7%–100%), although statistically there were no significant differences between treatments for all three experiments. This could probably be due to mortality of FCW‐grown Namalycastis after spawning. FCW‐grown Namalycastis had significantly higher (p < .05) wet length than unfed polychaetes. Sexual maturation in Namalycastis was not affected by lowering ambient temperature from 28°C to 26°C. Compositions of arachidonic acid, eicosapentaenoic acid and docosahexaenoic acid were higher in FCW‐grown Namalycastis than unfed Namalycastis. Overall, Namalycastis can be cultured in captivity using FCW but further research is required to mass produce the polychaetes economically and sustainably.

中文翻译：

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鱼类养殖废物改善了多毛cha Namalycastis sp。的生长和脂肪酸组成。（线虫科）及其作为泥蟹饲料的潜在用途

在这项研究中，评估了多毛螯虾作为泥蟹饲料和生物修复高度开发不足的养分丰富的水产养殖废物的潜在用途。给定两种多毛属物种Namalycastis sp。的蟹食（Scylla olivacea）的食物偏好。在阐明使用鱼类养殖废物（FCW）养殖的所选多毛cha的生长，存活率和脂肪酸组成之前，首先确定了Ne（Nereididae）和E（Eunice reticulata）。还评估了水温对所选多毛cha性成熟的影响。以这两种多毛鱼类为食的泥蟹，但观察到偏爱纳马卡斯蒂卡氏菌。纳马里卡斯蒂斯喂食的FCW的存活率（16.7％–58.3％）低于鱼饲料或不喂食的对照处理（41.7％–100％），尽管从统计学上来说，这三个实验的处理之间无显着差异。这可能是由于产卵后FCW生长的Namalycastis的死亡。FCW种植的Namalycastis的 湿长显着高于未喂食的多毛cha（p <.05）。将环境温度从28°C降低到26°C不会影响纳马卡斯蒂斯的性成熟。在FCW种植的Namalycastis中花生四烯酸，二十碳五烯酸和二十二碳六烯酸的成分要高于未进食的Namalycastis。全面的，Namalycastis可以使用FCW人工饲养，但需要进一步研究以经济和可持续地大规模生产多毛cha。