Aquaculture Reports最新文献

{"title":"Effect of the active form of vitamin D₃ on growth performance and immune-related gene expression in giant grouper (Epinephelus lanceolatus)","authors":"Yin-Ze Shi ,&nbsp;Andre Giovanni ,&nbsp;Li-Wu Cheng ,&nbsp;Pei-Chi Wang ,&nbsp;Waraporn Kraitavin ,&nbsp;Yu-Chi Lin ,&nbsp;Shih-Chu Chen","doi":"10.1016/j.aqrep.2025.103353","DOIUrl":"10.1016/j.aqrep.2025.103353","url":null,"abstract":"<div><div>This study investigated the effects of dietary supplementation with the herbal active form of vitamin D₃ (AcD; Phytobiotics Futterzusatzstoffe GmbH, Germany) on the growth performance, immune response, and disease resistance of giant grouper (<em>Epinephelus lanceolatus</em>). Fish were fed a commercial diet (control) or the same diet supplemented with 0.01 % AcD (AcD100) or 0.02 % AcD (AcD200) for eight weeks: After 8 weeks of feeding, various growth parameters (final weight, weight gain, and specific growth rate) showed an increasing trend with AcD concentration, with AcD200 treatment significantly improving growth performance and the feed conversion ratio. Both innate (lysozyme activity) and adaptive (immunoglobulin M expression) immune responses were upregulated in AcD-supplemented fish, particularly in the AcD200 treatment. The proinflammatory cytokines interferon-gamma and interleukin-1 beta increased in the AcD200 treatment, whereas the anti-inflammatory cytokine interleukin-10 was upregulated with high AcD supplementation and long feeding durations. Growth-related genes (insulin-like growth factor 1 and growth hormone) were also enhanced in AcD200 treatment. Although no significant differences in resistance to <em>Streptococcus iniae</em> infection were observed among treatments, AcD supplementation mitigated hepatic lipidosis and modulated inflammatory responses under pathogenic stress. In conclusion, dietary supplementation with 200 mg/kg AcD is a promising herbal feed additive for enhancing growth performance, modulating immune responses, and improving the overall health of giant grouper.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103353"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973050","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Aquaculture pond is a rich source of Streptomyces spp. with promising potential for developing quorum sensing manipulating probiotics","authors":"Yang Chen ,&nbsp;Yuanqing Rong ,&nbsp;Rui Wang ,&nbsp;Zheng Guo ,&nbsp;Zhewei Chi ,&nbsp;Zhongheng Xu ,&nbsp;Evgeniya V. Prazdnova ,&nbsp;Michael Leonidas Chikindas ,&nbsp;Sophie St‑Hilaire ,&nbsp;Tae-Jong Kim ,&nbsp;Xiufeng Zhang ,&nbsp;Ren Hu ,&nbsp;Miao Cui ,&nbsp;Delin Xu","doi":"10.1016/j.aqrep.2025.103331","DOIUrl":"10.1016/j.aqrep.2025.103331","url":null,"abstract":"<div><div>Applying quorum-quenching (QQ) probiotics is a promising non-antibiotic-based strategy for sustainable aquaculture. In this study, a total of fifty-two <em>Streptomyces</em> strains were isolated and identified from aquaculture pond sediment and intestines of fish collected in the Panyu District of Guangzhou, China. Half of the isolated strains exhibited varying degrees of antagonistic activity against a variety of pathogenic bacteria in aquaculture, including <em>Aeromonas hydrophila</em>, <em>Pseudomonas aeruginosa</em>, <em>Vibrio parahemolyticus</em>, <em>Staphylococcus aureus</em>, and <em>Streptococcus agalactiae</em>. Among the forty-four strains whose genome was successfully isolated, 39 (∼90 %) were demonstrated carrying AHL-acylase encoding genes by PCR, indicating the natural and ubiquitous potential of <em>Streptomyces</em> spp. in degrading quorum sensing (QS) signals. Nine strains, S7, S10, S11, S25, TI9, TI11, TI15, DI5, and DI9, showed clear QS inhibition (QSI) activity in agar well diffusion assays by applying <em>Agrobacterium tumefaciens</em> A136 and <em>Chromobacterium violaceum</em> CV026 as biosensors. An RT-PCR analysis demonstrated the repressed expression of a variety of virulence genes in <em>P. aeruginosa</em> when co-cultured with strain S25. The results of this study demonstrate the favorable probiotic potential of <em>Streptomyces</em> spp. Isolated from the aquaculture environment, particularly in their ubiquitous QSI ability. These strains serve as promising QQ probiotic candidates and may contribute to developing novel eco-friendly anti-virulence therapy strategies for aquaculture.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103331"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The effects of bile acid addition to a high-fat diet on the growth, body coloration, and lipid metabolism in red-white koi (Cyprinus carpio var. koi)","authors":"Hongmei Song,&nbsp;Yixin Liang,&nbsp;Xuejie Wang,&nbsp;Xidong Mu,&nbsp;Chao Liu,&nbsp;Yexin Yang,&nbsp;Yi Liu","doi":"10.1016/j.aqrep.2025.103288","DOIUrl":"10.1016/j.aqrep.2025.103288","url":null,"abstract":"<div><div>To study the effects of adding bile acids to high-fat feed on the growth, body color, and lipid metabolism of red-white koi (<em>Cyprinus carpio</em> var. koi), and to explore methods for improving the absorption efficiency of astaxanthin in colored feed, a 60-day feeding trial was conducted using fish initially weighing 14.81 ± 0.13 g. The control group (LB0) was fed a low-fat diet (34 % crude protein, 6 % crude fat), while the experimental groups were fed high-fat diets (34 % crude protein, 12 % crude fat) supplemented with bile acids at 0, 150, 300, and 450 mg/kg. These groups were designated as HB0, HB150, HB300, and HB450, respectively. Results showed: (1) High-fat groups had significantly higher specific growth rate and weight gain rate (SGR and WGR) than the low-fat group (<em>P</em> &lt; 0.05), with maximum values observed at 150 mg/kg bile acid. (2) Scale carotenoid content initially increased and then decreased with increasing bile acid concentration, peaking in HB300. Skin carotenoid content was significantly higher in the high-fat groups than in the low-fat group (<em>P</em> &lt; 0.05), with the highest value in the HB450 group. On day 60, the a* value of the body surface color was significantly higher in the HB300 group than in the other groups (<em>P</em> &lt; 0.05), and b* values were also significantly higher in the HB300 and HB450 groups than in the other groups (<em>P</em> &lt; 0.05). (3) AST/ALT ratios did not fiffer significantly between the HB150 and HB450 groups (<em>P</em> &gt; 0.05), but decreased significantly in the HB300 group (<em>P</em> &lt; 0.05). TC content was significantly lower in the HB150 and HB300 groups than in the controls (<em>P</em> &lt; 0.05). HDL-C and LDL-C levels decreased progressively with increasing bile acid supplementation, reaching their lowest levels in the HB450 group. (4) Liver tissue sections showed nuclear dissolution, displacement, and increased vacuoles in hepatocytes in the HB0 group, while liver cell size slightly diminished in the HB450 group. Overall, supplementing high-fat diets (with a fat content of 12 %) with 150–300 mg/kg bile acids improves carotenoid deposition, lipid metabolism, and astaxanthin utilization in koi fish.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103288"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The food digestion strategies of three wild cold-water adult fishes","authors":"Liangliang Xu ,&nbsp;Peng Xiang ,&nbsp;Sihai Min ,&nbsp;Baowen Zhang ,&nbsp;Hanxi Chen ,&nbsp;Zesong Wang ,&nbsp;Yanjun Jin ,&nbsp;Fenglin Liu ,&nbsp;Xiaoshuai Liu ,&nbsp;Zhaobin Song","doi":"10.1016/j.aqrep.2025.103293","DOIUrl":"10.1016/j.aqrep.2025.103293","url":null,"abstract":"<div><div>Herbivorous, omnivorous, and carnivorous fish represent the predominant trophic levels in cold-water ecosystems. These groups exhibit differences in food composition and nutrient intake based on their respective trophic positions. Understanding the mechanisms of food digestion in cold-water fish is crucial for effective population conservation and restoration efforts. This study employed several approaches, including food nutrient composition analysis, 16S rRNA gene sequencing, and metagenomics, to investigate the food digestion mechanisms in <em>Schizothorax wangchiachii</em> (herbivorous), <em>Schizothorax kozlovi</em> (omnivorous), and <em>Percocypris pingi</em> (carnivorous). A total of 45 gut samples of these three cold-water adult fishes were collected from the Jinping Dahewan range of lower reaches of the Yalong River. Significant differences were observed in the nutritional composition of the food consumed by these three cold-water fish species (Kruskal-Wallis H test; <em>P</em> &lt; 0.05). The proportion of protein in the diets of cold-water fish increased significantly from 65 % in <em>S. wangchiachii</em> to 98 % in <em>P. pingi</em>. The 16S rRNA gene sequencing revealed that Proteobacteria constituted the highest relative abundance in the gut of <em>P. pingi</em> (56 %), followed by <em>S. wangchiachii</em> (39 %), while <em>S. kozlovi</em> exhibited the lowest relative abundance at 30 %. Metagenomics analysis of the gut microbiota indicated that the intestinal microorganisms of <em>S. wangchiachii</em> and <em>S. kozlovi</em> were primarily enriched in cellulose and hemicellulose degradation pathways, whereas <em>P. pingi</em> was predominantly enriched in amino acid metabolism. Notably, the microbial flora of <em>S. wangchiachii</em> had the highest number of genes associated with xylanase, 1,4-β-xylosidase, and cellulase compared to <em>S. kozlovi</em> and <em>P. pingi</em>. Additionally, proteins such as homoserine/homoserine lactone efflux protein (K05834), as well as conjugal transfer pilus assembly protein TrbC (K12059), showed the highest gene abundance in the gut of <em>P. pingi</em>. Overall, this study serves as an important reference for understanding food digestion in cold-water fish.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103293"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Unraveling the microRNA regulatory network underlying the planktonic-to-benthic transition in the Pacific oyster","authors":"Yusu Xie ,&nbsp;Mingyu Yang ,&nbsp;Haiming Sun ,&nbsp;Fei Xu","doi":"10.1016/j.aqrep.2025.103304","DOIUrl":"10.1016/j.aqrep.2025.103304","url":null,"abstract":"<div><div>The Pacific oyster, <em>Crassostrea gigas</em>, undergoes a critical developmental transition from planktonic larvae to sessile benthic juveniles, a process essential for both aquaculture productivity and the stability of marine ecosystems. While environmental and neuroendocrine cues regulating this transition have been extensively studied, the contribution of microRNAs (miRNAs) remains largely unexplored. In this study, we employed a high-resolution temporal sampling strategy to investigate oyster metamorphosis, identified 33 miRNAs associated with larval settlement and metamorphosis. Additionally, we uncovered 35 highly correlated miRNA-target gene pairs, revealing a complex post-transcriptional regulatory network. We further validated the expression pattern of the potential regulatory hub miRNA novel_mir_80 and confirmed its presence through whole-mount in situ hybridization using LNA-modified probes. Functional annotation of target genes highlighted key roles in adhesion, signal transduction, protein homeostasis, cytoskeleton remodeling, genome stability, and transcriptional and epigenetic regulation. These results underscore the pivotal role of miRNAs in orchestrating developmental reprogramming during the planktonic-benthic transition. Our findings not only expand current understanding of miRNA-mediated gene regulation in <em>C. gigas</em>, but also provide novel molecular targets with potential applications in oyster breeding and aquaculture management.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103304"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lactobacillus plantarum-derived α-amylase inhibitor significantly improves the physiological health and glucose metabolism of large yellow croaker (Larimichthys crocea) under a high-starch diet","authors":"Shanshan Wang ,&nbsp;Yuxin Yao ,&nbsp;Pan Wang ,&nbsp;Rui Wang ,&nbsp;Weijun Chen ,&nbsp;Chuanzhong Zhu ,&nbsp;Ganfeng Yi ,&nbsp;Yunzhang Sun ,&nbsp;Qingpi Yan","doi":"10.1016/j.aqrep.2025.103285","DOIUrl":"10.1016/j.aqrep.2025.103285","url":null,"abstract":"<div><div>This study aimed to investigate the effects of an α-amylase inhibitor (α-AI) produced by <em>Lactobacillus plantarum</em> M89, isolated from the intestine of large yellow croaker (<em>Larimichthys crocea</em>), on the growth and health of the fish. The α-AI, which showed 87 % stable inhibitory activity under high-temperature treatment, was supplemented into the diet at a concentration of 4 g/kg. After an 8-week feeding trial, the α-AI group exhibited significantly improved growth performance, including higher final body weight, weight gain rate, specific growth rate, and condition factor, alongside a lower feed conversion ratio. The inhibitor also enhanced liver glycogen content, upregulated key gluconeogenesis genes (glucose-6-phosphatase and pyruvate decarboxylase), and improved antioxidant status by reducing serum malondialdehyde and increasing superoxide dismutase and glutathione peroxidase activities. Furthermore, dietary α-AI improved liver and intestinal morphology, reduced viscerosomatic and hepatosomatic indices, and modulated intestinal microbiota. The α-AI group showed a higher survival rate after a bacterial challenge. The findings demonstrate that dietary supplementation with the <em>L. plantarum</em> M89-derived α-AI can enhance growth, antioxidant capacity, organ health, and potentially disease resistance in <em>L. crocea</em>.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103285"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Identification of candidate thin blade-related SNPs and genes in Pyropia haitanensis","authors":"Hongzi Song ,&nbsp;Zhicong Gao ,&nbsp;Qijun Luo ,&nbsp;Yuting Zhang ,&nbsp;Juanjuan Chen ,&nbsp;Rui Yang ,&nbsp;Peng Zhang ,&nbsp;Tiegan Wang ,&nbsp;Shanshan Zhu ,&nbsp;Haimin Chen","doi":"10.1016/j.aqrep.2025.103243","DOIUrl":"10.1016/j.aqrep.2025.103243","url":null,"abstract":"<div><div><em>Pyropia haitanensis</em>, an economically important species of red algae, is widely cultivated in China. Agronomic traits of <em>P. haitanensis</em>, particularly blade thickness, influence product quality and processing methods. This study aimed to identify growth-related single nucleotide polymorphisms (SNPs) and candidate genes for thin blades using genome-wide association studies (GWAS) and transcriptome analysis. A total of 100 samples were sequenced, yielding 224,494 high-quality SNPs. GWAS identified 99 significant loci related to blade length, width, weight, and thickness. Transcriptome analysis revealed eleven annotated genes associated with thickness, including the triose-phosphate isomerase gene (<em>PhTPI</em>) that demonstrated significant upregulation in thicker strains. Integrative KEGG and GO pathway analyses highlighted enrichment in carbon metabolism, glycolysis/gluconeogenesis, and photosynthesis-related pathways, indicating their potential roles in regulating these traits. The TPI gene was validated by qRT-PCR, confirming its association with the variation in blade thickness. These findings provide a foundation for the molecular breeding of <em>P. haitanensis</em> with thin blades, thereby enabling enhanced precision in genetic improvement for better economic and processing outcomes.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103243"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145617104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Culture of the kelp Undaria pinnatifida in subtropical waters using clonal seedlings: A pilot study in China","authors":"Xiaodong Li (李晓东) ,&nbsp;Mengyun Chen (陈梦云) ,&nbsp;Mingyong Lai (赖铭勇) ,&nbsp;Gaoxiong Zeng (曾高雄) ,&nbsp;Lingzhan Xue (薛凌展) ,&nbsp;Chenhui Zhong (钟晨辉) ,&nbsp;Feng Han (韩枫) ,&nbsp;Xiaofei Leng (冷晓飞) ,&nbsp;Yaning Yang (杨亚宁) ,&nbsp;Shaojun Pang (逄少军)","doi":"10.1016/j.aqrep.2025.103333","DOIUrl":"10.1016/j.aqrep.2025.103333","url":null,"abstract":"<div><div>The temperate-water kelp <em>Undaria pinnatifida</em> (wakame) was successfully farmed in subtropical coastal waters of Fujian, China using clonal sporophyte seedlings. The clonal sporophytes acclimated effectively to subtropical conditions, achieving mean frond lengths of 190.7 ± 18.4 cm and fresh weights of 353.4 ± 58.5 g per individual sporophyte in early March. Cluster-clipping cultivation method yielded 10.20 ± 0.43 kg m⁻¹ cultivation rope, surpassing the traditional northern cultivation counterpart Liaoning province (8.63 ± 0.27 kg m⁻¹) by 19 % and demonstrating 101 % greater biomass than individual-clipping method (5.07 ± 0.25 kg m⁻¹). The subtropical-grown <em>Undaria</em> blades had higher protein content (2.08 ± 0.06 %) and umami-associated amino acid levels (glutamate: 2.46 ± 0.07 g kg⁻¹; aspartate: 1.97 ± 0.06 g kg⁻¹) than blades grown in Liaoning. The success of this subtropical cultivation trial shows the feasibility of expanding the cultivation further down to the southern province to meet the uprising market demands.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103333"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interactive effects of stocking density and feeding rate in a biofloc system on growth, immune response, antioxidant status, and stress resilience of common carp (Cyprinus carpio)","authors":"Amir Parviz Salati ,&nbsp;Saeed Keyvanshokooh ,&nbsp;Mahdi Naderi ,&nbsp;Hamid Mohammadiazarm ,&nbsp;Adel Kassim Jassim ,&nbsp;Seyed Hadi Seyedalhosseini","doi":"10.1016/j.aqrep.2025.103320","DOIUrl":"10.1016/j.aqrep.2025.103320","url":null,"abstract":"<div><div>Biofloc technology has emerged as a sustainable aquaculture strategy that improves water quality and enhances nutrient recycling, offering the possibility of reducing commercial feed inputs without compromising fish performance. Stocking density and feeding rate are two key factors shaping both microbial dynamics in biofloc systems and the physiological responses of cultured fish. This study evaluated the combined effects of these factors on <em>Cyprinus carpio</em>. Juvenile fish (21.55 ± 1.79 g) were reared for 60 days under five treatments: a clear-water control (10 kg m⁻³; fed 3 % of body weight per day) and four biofloc groups representing two stocking densities—low density (10 kg m⁻³) and high density (20 kg m⁻³)—each fed either 3 % or 2.1 % of body weight per day (LD-3 %, LD-2.1 %, HD-3 %, HD-2.1 %). The 2.1 % feeding rate represented a 30 % reduction in commercial feed input. Water quality remained within acceptable ranges across biofloc treatments. Fish fed 2.1 % of body weight per day exhibited improved feed conversion and protein efficiency ratios without reductions in growth or survival. The LD-2.1 % group showed the most favorable physiological responses, including higher digestive enzyme activities (protease, lipase), elevated glutathione peroxidase activity, enhanced immune status (lysozyme and alternative complement activity), and lower hepatic malondialdehyde concentrations. Prior to acute crowding stress, fish fed 2.1 % displayed lower baseline cortisol and glucose levels and recovered more rapidly after stress exposure. Overall, reducing the feeding rate by 30 % under biofloc conditions improved feed efficiency and physiological robustness, and this feeding reduction remained feasible even at higher stocking density.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103320"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dietary yeast culture supplementation enhances feed utilization in largemouth bass (Micropterus salmoides) via promotion of metabolic homeostasis and hepatointestinal health","authors":"Min Li ,&nbsp;Ying Guan ,&nbsp;Min Xue ,&nbsp;Wenhao Zhou ,&nbsp;Jie Wang ,&nbsp;Hao Wang ,&nbsp;Yaping Zhu ,&nbsp;Xiaofang Liang","doi":"10.1016/j.aqrep.2026.103366","DOIUrl":"10.1016/j.aqrep.2026.103366","url":null,"abstract":"<div><div>As a complex compound, yeast culture provides not only abundant proteins and amino acids, but also immunologically active components such as β-glucan, nucleotides, and mannose oligosaccharides. This study aimed to investigate the effects of dietary supplementation with yeast culture on the growth performance, metabolism, and hepatointestinal health of largemouth bass (<em>Micropterus salmoides</em>). Juvenile largemouth bass (initial body weight: 31.39 ± 0.05 g, n = 120) were randomly divided into two groups and reared for 65 days: a control group (Con) and supplemented with 3 % yeast culture on the basis of control group (YC). The results showed that although yeast culture supplementation did not significantly affect growth performance (<em>P</em> &gt; 0.05), it significantly reduced the feed conversion ratio (FCR) and increased the productive protein value (PPV) (<em>P</em> &lt; 0.05), indicating improved economic benefits. Fish fed YC diet enhanced the fasting glycolysis, gluconeogenesis, key lipolytic enzymes, and the basal energy metabolism (<em>P</em> &lt; 0.05), which contributed to the protection of the liver from lipid accumulation. Additionally, addition of yeast culture reduced inflammatory infiltrated intestines and downregulated the expression of HIF1α and IL-10 (<em>P</em> &lt; 0.05). It also promoted intestinal health by reducing the abundance of harmful bacteria and increasing beneficial microbes. In conclusion, yeast culture improves hepatointestinal health by modulating glucose and lipid metabolism, as well as optimizing the gut microbiota composition, leading to enhanced feed utilization and economic benefits.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103366"},"PeriodicalIF":3.7,"publicationDate":"2026-03-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}