The almond Terminalia catappa leaf extract has been used to prevent diseases and improve breeding in various fishes; however, their effects on the leaf fish Monocirrhus polyacanthus larviculture are unknown. We evaluated the effect of almond leaf extract on growth performance and survival of leaf fish larvae submitted to handling stress. Five concentrations of aqueous extract of almond leaf (0.25, 0.50, 0.75, 1.00 and 1.25 g/L) were evaluated with five replicates. Leaf fish larvae (15 larvae/L 0.1 cm and 0.001 g) were fed 100 Artemia nauplii per larvae twice a day along 15 days and then submitted to handling stress of total water exchange and T. catappa extract replacement. Untreated fish were used as control. The stressful management caused lower survival rate for larvae in the control group (22.2 ± 3.14%, p < .05). The best weight gain (5.70 ± 0.20 g), specific growth rate (10.80 ± 0.24%/day), length (0.31 ± 0.17 cm) and survival (100.00 ± 0.00%) were obtained with 0.75 g/L T. catappa (p < .05). The water quality parameters (pH and total ammonia) showed increased values for the higher concentrations of aqueous extract. The use aqueous leaf extract of T. catappa reduces mortality and improves growth performance of leaf fish larvae. It is suggested the use of T. catappa as a growth promoter for leaf fish larvae.

中文翻译：

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榄仁木改善了应对压力的亚马逊叶鱼（Monocirrhus polyacanthus）幼虫的生长性能和存活率

杏仁榄仁叶提取物已被用于预防疾病和改善各种鱼类的繁殖。但是，它们对叶鱼莫氏沙棘幼虫养殖的影响尚不清楚。我们评估了杏仁叶提取物对处理应激的叶鱼幼虫生长性能和存活的影响。评估了五个浓度的杏仁叶水提取物浓度（0.25、0.50、0.75、1.00和1.25 g / L），一式五份。每天在15天之内两次给叶鱼幼虫（15只幼虫/ L 0.1厘米/0.001克和0.001克）喂食每只幼虫100头无节幼体，然后处理总水交换和T. catappa的压力。提取物替换。未经处理的鱼用作对照。压力管理导致对照组中的幼虫成活率降低（22.2±3.14％，p  <.05）。最佳的增重（5.70±0.20 g），比增长率（10.80±0.24％/天），长度（0.31±0.17 cm）和生存（100.00±0.00％）获得0.75 g / L T卡塔帕（p  <.05）。对于较高浓度的水提液，水质参数（pH和总氨水）显示出增加的值。使用T. catappa的含水叶提取物可降低死亡率并改善叶鱼幼虫的生长性能。有人建议将卡塔彼菌用作叶鱼幼虫的生长促进剂。