Risk assessment of shrimp-derived probiotics on culture performance and environmental biosafety in shrimp larvae rearing system

作者：Junqi Yu, Cong-Feng Wu, Pengsheng Dong, Chen Chen, Heng Chen, Jinfei Chen, Xiaoshuang Liu, Ke Wang, Kai Wang, Demin Zhang · 发表于：Frontiers in Marine Science · 年份：2025 · DOI：10.3389/fmars.2025.1683189 · 被引用次数：8 · 研究领域：Aquaculture Nutrition and Growth、Aquatic life and conservation、Aquaculture disease management and microbiota

Indigenous probiotics are widely applied in Penaeus vannamei aquaculture due to their potential to enhance disease resistance and promote growth. However, their biological and environmental safety requires comprehensive evaluation, particularly during the larval stage. This study investigated the effects of shrimp derived Lactobacillus casei HD1 and Bacillus licheniformis WZ1 on larval growth performance, aquatic bacterial communities, potential pathogens, and antibiotic resistance genes (ARGs), by using illumina sequencing and quantitative PCR (qPCR), comparing probiotic-treated and control (CK) groups. Probiotic supplementation significantly improved survival rate, biomass, and individual weight, while reducing concentrations of NH 4 + -N, NO 3 − -N, and PO 4 3− -P in rearing water. Compared to the control, α-diversity of the aquatic microbiota increased significantly, accompanied by elevated relative abundances of Bacteroidota , Bacillota , and Balneolota . The results of qPCR showed that no significant changes in abundance of ARGs and Lactobacillus in taxa were observed, whereas Bacillus was significantly enriched within probiotic-adding, compared to CK group. Notably, structural equation modeling (SEM) revealed that probiotics enhanced aquaculture performance through multiple pathways: indirectly by modulating aquatic microbial communities and directly by mitigating waterborne nutrients. These findings support the use of targeted indigenous probiotics as a sustainable st...