Feed nutritional composition affects the intestinal microbiota and digestive enzyme activity of black soldier fly larvae

作者：Guozhong Chen, Kai Zhang, Wenli Tang, Youzhi Li, Junyi Pang, Xin Yuan, Xiangbin Song, Linlin Jiang, Xin Yu, Hongwei Zhu, Jiao Wang, Jianlong Zhang, Xingxiao Zhang · 发表于：Frontiers in Microbiology · 年份：2023 · DOI：10.3389/fmicb.2023.1184139 · 被引用次数：26 · 研究领域：Insect Utilization and Effects、Forensic Entomology and Diptera Studies、Insect symbiosis and bacterial influences

Introduction Using black soldier fly larvae (BSFLs) to treat food waste is one of the most promising environmental protection technologies. Methods We used high-throughput sequencing to study the effects of different nutritional compositions on the intestinal microbiota and digestive enzymes of BSF. Results Compared with standard feed (CK), high-protein feed (CAS), high-fat feed (OIL) and high-starch feed (STA) had different effects on the BSF intestinal microbiota. CAS significantly reduced the bacterial and fungal diversity in the BSF intestinal tract. At the genus level, CAS, OIL and STA decreased the Enterococcus abundance compared with CK, CAS increased the Lysinibacillus abundance, and OIL increased the Klebsiella , Acinetobacter and Bacillus abundances. Diutina , Issatchenkia and Candida were the dominant fungal genera in the BSFL gut. The relative abundance of Diutina in the CAS group was the highest, and that of Issatchenkia and Candida in the OIL group increased, while STA decreased the abundance of Diutina and increased that of Issatchenkia . The digestive enzyme activities differed among the four groups. The α-amylase, pepsin and lipase activities in the CK group were the highest, and those in the CAS group were the lowest or the second lowest. Correlation analysis of environmental factors showed a significant correlation between the intestinal microbiota composition and digestive enzyme activity, especially α-amylase activity, which was highly correlated with bac...