Abstract
High temperature restricts the survival and growth of aquatic organisms. Probiotics have significant potential for mitigating the negative effects of temperature stress on fish. In this study, the American shad (Alosa sapidissima), a temperature-sensitive freshwater fish, was selected as the experimental paradigm to dissect the underlying mechanisms governing the interactions between the host and its microbiome, with a particular focus on the impact exerted by the probiotic Lactococcus lactis within a high-temperature setting. We evaluated the effects of probiotics on the growth and biochemistry of A. sapidissima by measuring relevant parameters and enzyme activities and conducted an integrated microbiome–transcriptome analysis to assess the impacts on the gut microbiota and uncover probiotic-regulated metabolic pathways. The findings of our research indicated that probiotics had beneficial effects on growth; the activities of enzymes such as LPS, T-SOD, and GSH-PX; and the gut microbial composition. Furthermore, the configuration of the intestinal microbiota underwent a transformation, as evidenced by the increased relative prevalence of bacteria with potential beneficial properties, including Bacillus, Lactococcus, and Clostridium. Liver transcriptomic analysis revealed 586 differentially expressed genes (DEGs). The expression of immune-related genes (nfil3-2, il17d, and leap2) and lipid metabolism-related genes (pla2g3 and sc5d) was strongly upregulated. KEGG enrichment analysis revealed that the DEGs were predominantly clustered within metabolic pathways such as circadian rhythm and fatty acid degradation. This study revealed that probiotics enhanced intestinal bacterial diversity and eased stress by regulating the circadian rhythm, immunity, and lipid metabolism under high-temperature conditions. This study provides a reference for the use of probiotics in A. sapidissima at high temperatures.








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References
Arani MM, Salati A, Safari O, Keyvanshokooh S (2019) Dietary supplementation effects of Pediococcus acidilactici as probiotic on growth performance, digestive enzyme activities and immunity response in zebrafish (Danio rerio). Aquacult Nutr 25:4
Assan D, Kuebutornye FKA, Hlordzi V, Chen H, Mraz J, Mustapha UF, Abarike ED (2022) Effects of probiotics on digestive enzymes of fish (finfish and shellfish); status and prospects: a mini review. Comp Biochem Phys B 257:110653
Bayse SM, Shaughnessy CA, Regish AM, McCormick SD (2020) Upper thermal tolerance and heat shock protein response of juvenile American shad (Alosa sapidissima). Estuar Coast 43:182–188
Dawood MAO, Koshio S, Ishikawa M, Yokoyama S, El-Basuini MF, Hossain MS, Nhu TH, Dossou S, Moss AS (2016) Effects of dietary supplementation of Lactobacillus rhamnosus or/and Lactococcus lactis on the growth, gut microbiota and immune responses of red sea bream, Pagrus major. Fish Shellfish Immunol 49:275–285
Ding FF, Zhou NN, Wang T, Bao MY, Qiao F, Du ZY, Zhang ML (2024a) Fish gut-derived probiotic Pediococcus pentosaceus alleviates gossypol-induced intestinal inflammation by inhibiting NLRC3/NF-κB/IL-1β signal pathway in Nile tilapia. Fish Shellfish Immun 153:109852
Ding H, Chen XC, Wan L, Zhang YY, Rui XH, He T, Liu J, Shang ZB (2024b) Klebsiella pneumoniae alters zebrafish circadian rhythm via inflammatory pathways and is dependent on light cues. Heliyon 10:e30829
Doan HV, Hoseinifar SH, Ringø E, Ángeles Esteban M, Dadar M, Dawood MAO, Faggio C (2019) Host-associated probiotics: a key factor in sustainable aquaculture. Rev Fish Sci Aquac 28:16–42
El-Saadony MT, Alagawany M, Patra AK, Kar I, Tiwari R, Dawood MAO, Dhama K, Abdel-Latif HMR (2021) The functionality of probiotics in aquaculture: an overview. Fish Shellfish Immun 117:36–52
Feng J, Liu S, Zhu C, Cai Z, Cui W, Chang X, Yan X, Qin C, Zhang J, Nie G (2022) The effects of dietary Lactococcus spp. on growth performance, glucose absorption and metabolism of common carp, Cyprinus carpio L. Aquaculture 546:737394
Fenton NM, Qian L, Scott NA, Paine EG, Sharpe LJ, Brown AJ (2024) SC5D is the sixth enzyme in cholesterol biosynthesis targeted by the E3 ubiquitin ligase MARCHF6. Bba-Mol Cell Res 869:159482
Galindo-Villegas J, Garcia-Moreno D, Oliveira SD, Meseguer J, Mulero V (2012) Regulation of immunity and disease resistance by commensal microbes and chromatin modifications during zebrafish development. Proc Natl Acad Sci USA 109:2605–2614
Gauthier C, Campbell PGC, Couture P (2009) Condition and pyloric caeca as indicators of food web effects in fish living in metal-contaminated lakes. Ecotox Environ Safe 72:2066–2074
Ghosh T (2025) Recent advances in the probiotic application of the Bacillus as a potential candidate in the sustainable development of aquaculture. Aquaculture 594:741432
Gu WB, Liu ZP, Zhou YL, Li B, Wang LZ, Dong WR, Chen YY, Shu MA (2019) The nuclear factor interleukin 3-regulated (NFIL3) transcription factor involved in innate immunity by activating NF-κB pathway in mud crab Scylla paramamosain. Dev Comp Immunol 101:103452
Hasan I, Rimoldi S, Saroglia G, Terova G (2023) Sustainable fish feeds with insects and probiotics positively affect freshwater and aarine fish gut microbiota. Animals 13:1633
Hossain KM, Naziat A, Atikullah M, Hasan MT, Ferdous Z, Paray BA, Zahangir MM, Shahjahan M (2024) Probiotics relieve growth retardation and stress by upgrading immunity in Nile tilapia (Oreochromis niloticus) during high temperature events. Anim Feed Sci Tech 316:116054
Jia Y, Liu Q, Goudie CA, Simco BA (2009) Survival, growth, and feed utilization of pre- and postmetamorphic American shad exposed to increasing salinity. N Am J Aquac 71:197–205
Jin H, Yan C, Xiao T, Yan N, Xu J, Zhou L, Zhou X, Shao Q, Xia S (2018) High fish oil diet promotes liver inflammation and activates the complement system. Mol Med Rep 175:6852–6858
Kong Y, Gao C, Du X, Zhao J, Li M, Shan X, Wang G (2020) Effects of single or conjoint administration of lactic acid bacteria as potential probiotics on growth, immune response and disease resistance of snakehead fish (Channa argus). Fish Shellfish Immun 102:412–421
Kostic AD, Howitt MR, Garrett WS (2013) Exploring host–microbiota interactions in animal models and humans. Genes Dev 27:701–718
Laiz-Carrión R, Segura-Noguera M, Martín del Río M, Mancera JM (2023) Ontogeny of adenohypophyseal cells in the pituitary of the American shad (Alosa sapidissima). Gen Comp Endocr 132:454–464
Lee YH, Nguyen TL, Roh HJ, Kim A, Park J, Lee J, Kang Y, Kang H, Sohn M, Park C, Kim D (2023) Mechanisms underlying probiotic effects on neurotransmission and stress resilience in fish via transcriptomic profiling. Fish Shellfish Immun 141:109063
Ley RE, Turnbaugh PJ, Klein S, Gordon JI (2006) Microbial ecology: human gut microbes associated with obesity. Nature 444:1022–1023
Li M, Liang H, Yang H, Ding Q, Xia R, Chen J, Zhou W, Yang Y, Zhang Z, Yao Y, Ran C, Zhou Z (2024) Deciphering the gut microbiome of grass carp through multi-omics approach. Microbiome 12:2
Lin PH, Chen SW, Wen ZH, Hu SY (2022) Administration of the potential probiotic Paenibacillus ehimensis NPUST1 enhances expression of indicator genes associated with nutrient metabolism, growth and innate immunity against Aeromonas hydrophila and Streptococcus indie infections in zebrafish (Danio rerio). Fishes 7:386
Litvak Y, Byndloss MX, Baumler AJ (2018) Colonocyte metabolism shapes the gut microbiota. Science 362:eaat9076
Liu C, Zhao LP, Shen YQ (2021a) A systematic review of advances in intestinal microflora of fish. Fish Physiol Biochem 47:2041–2053
Liu Q, Zheng Y, Fu L, Simco BA, Goudie CA (2021b) Brood-stock management and natural spawning of American shad (Alosa sapidissima) in a recirculating aquaculture system. Aquaculture 532:735952
Liu Z, Zhou X, Wang W, Gu L, Hu C, Sun H, Xu C, Hou J, Jiang Z (2022) Lactobacillus paracasei 24 attenuates lipid accumulation in high-fat diet-induced obese mice by regulating the gut microbiota. J Agric Food Chem 70:4631–4643
Love MI, Huber W, Anders S (2014) Moderated estimation of fold change and dispersion for RNA-seq data with DESeq2. Genome Biol 15:550
Luo L, Liu S, Chen B, Li F, Deng Y, Huang X, Geng Y, Ouyang P, Chen D (2024) Chronic ammonia stress caused disorder of intestinal microbiota and damaged intestinal structure and function in yellow catfish (Pelteobagrus fulvidraco). Aquaculture 581:740428
Magne F, Gotteland M, Gauthier L, Zazueta A, Pesoa S, Navarrete P, Balamurugan R (2020) The Firmicutes/Bacteroidetes ratio: a relevant marker of gut dysbiosis in obese patients? Nutrients 12:1474
Makarova AM, Pasta S, Watson G, Shackleton C, Epstein EH (2017) Attenuation of UVR-induced vitamin D3 synthesis in a mouse model deleted for keratinocyte lathosterol 5-desaturase. J Steroid Biochem 171:187–194
Mörkl S, Butler MI, Holl A, Cyran JF, Dinan TG (2020) Probiotics and the microbiota-gut-brain axis: focus on psychiatry. Curr Nutr Rep 9:171–182
Naiel AEM, Shehata AM, El-Kholy AI, El-Naggar K, Farag MR, Alagawany M (2022) The mitigating role of probiotics against the adverse effects of suboptimal temperature in farmed fish: a review. Aquaculture 550:737877
Negm SS, Ismael NE, Ahmed AI, Asely AME, Naiel MA (2021) The efficiency of dietary Sargassum aquifolium on the performance, innate immune responses, antioxidant activity, and intestinal microbiota of Nile Tilapia (Oreochromis niloticus) raised at high stocking density. J Appl Phycol 33:4067–4082
Ota SM, Kong X, Hut R, Suchecki D, Meerlo P (2021) The impact of stress and stress hormones onz endogenous clocks and circadian rhythms. Front Neuroendocrin 63:100931
Pereira WA, Mendonça CMN, Urquiza AV, MarteinssonVÞ LJG, Cotter PD, Villalobos EF, Romero J, Oliveira RPS (2022) Use of probiotic bacteria and bacteriocins as an alternative to antibiotics in aquaculture. Microorganisms 10:1705
Pérez-Jiménez GM, Alvarez-Villagomez CS, Martínez-Porchas M, Garibay-Valdez E, Sepúlveda-Quiroz CA, Méndez-Marín O, Martínez-García R, Jesús-Contreras R, Alvarez-González CA, del Carmen De la Rosa-García S (2024) The indigenous probiotic Lactococcus lactis PH3-05 enhances the growth, digestive physiology, and gut microbiota of the tropical gar (Atractosteus tropicus) larvae. Animals 14:2663
Pertea M, Pertea GM, Antonescu CM, Chang TC, Mendell JT, Salzberg SL (2015) StringTie enables improved reconstruction of a transcriptome from RNA-seq reads. Nat Biotechnol 33:290–295
Progatzky F, Taylor H, Bugeon L, Cassidy S, Radbruch A, Dallman MJ, Lamb JR (2012) The role of Nfil3 in zebrafish hematopoiesis. Dev Comp Immunol 38:187–192
Sumon TA, Hussain MA, Sumon MAA, Jang WJ, Abellan FG, Sharifuzzaman SM, Brown CL, Lee E, Kim C, Hasan MT (2022) Functionality and prophylactic role of probiotics in shellfish aquaculture. Aquacult Rep 25:101220
Takahashi J (2017) Transcriptional architecture of the mammalian circadian clock. Nat Rev Genet 18:164–179
Todorov SD, Lima JMS, Bucheli JEV, Popov IV, Tiwari SK, Chikindas ML (2024) Probiotics for aquaculture: hope, truth, and reality. Probiotics Antimicro Prot 16:2007–2020
Torres-Maravilla E, Parra M, Maisey K, Vargas RA, Cabezas-Cruz A, Gonzalez A, Tello M, Bermúdez-Humarán LG (2024) Importance of probiotics in fish aquaculture: towards the identification and design of novel probiotics. Microorganisms 12:626
Turvey ST, Barrett LA, Hao Y, Lei Z, Zhang X, Wang X, Huang Y, Kaiya Z, Hart TR, Ding W (2010) Rapidly shifting baselines in yangtze fishing communities and local memory of extinct species. Conserv Biol 24:778–787
Won S, Hamidoghli A, Choi W, Park Y, Jang WJ, Kong IS, Bai SC (2020) Effects of Bacillus subtilis WB60 and Lactococcus lactis on growth, immune responses, histology and gene expression in Nile Tilapia, Oreochromis Niloticus. Microorganisms 8:67
Wu F, Xie X, Du T, Jiang X, Miao W, Wang T (2023) Lactococcus lactis, a bacterium with probiotic functions and pathogenicity. World J Microb Biot 39:325
Zhang J, Chi S, Tan B, Dong X, Zhang S, Liang W, Gao W, Liao C, Deng H (2023) Compound acidifier promoted the growth of hybrid grouper (♀Epinephelus fuscoguttatus × ♂Epinephelus lanceolatu) after high replacement of fish meal with cotton protein concentrate (CPC), improved stomach formation and digestibility, immune potency. Aquacul Rep 29:101485
Zhang B, Yang H, Cai G, Nie Q, Sun Y (2024) The interactions between the host immunity and intestinal microorganisms in fish. Appl Microbiol Biotechnol 108:30
Zhu C, Li D, Chen W, Ban S, Liu T, Wen H, Jiang M (2021) Effects of dietary host-associated Lactococcus lactis on growth performance, disease resistance, intestinal morphology and intestinal microbiota of mandarin fish (Siniperca chuatsi). Aquaculture 540:736702
Zhu L, Kong Y, Chang X, Feng J, Wang X, Hou L, Zhao X, Pei C, Kong X (2023a) Effects of two fish-derived probiotics on growth performance, innate immune response, intestinal health, and disease resistance of Procambarus clarkii. Aquaculture 562:738765
Zhu W, Qiu L, Niu Y, Pan M, Chen X, Zhou Q, Yu C (2023b) Study on efficient metabolism mechanism of starch in the intestine of carnivorous fish: a case of Monopterus albus. Aquacult Rep 33:101795
Acknowledgements
This research project received sponsorship from the Shanghai Agriculture Applied Technology Development Program (2022-02-08-00-12-F01180), the Shanghai Yangtze Estuary Main Economic Aquatic Animal Artificial Breeding Engineering Technology Research Center (13DZ2251800), and the Shanghai Leading Agricultural Talent Program (G201860).
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All authors contributed to the study conception and design. [Chuwen Qiu] conceived and designed the study, participated in data collection and analysis, and drafted the manuscript. [Yonghai Shi] contributed to the study design, provided critical feedback on the manuscript . [Xuxiong Huang] was involved in the data analysis, providing a profound and comprehensive understanding of the research results. [Zaizhong Chen] was involved in the data analysis, providing a profound and comprehensive understanding of the research results and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Qiu, C., Shi, Y., Huang, X. et al. Impact of Probiotics on Enzyme Activities, Intestinal Microbial Remodeling, and Metabolic Pathways in American Shad (Alosa sapidissima) at High Temperatures. Mar Biotechnol 27, 58 (2025). https://doi.org/10.1007/s10126-025-10434-z
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DOI: https://doi.org/10.1007/s10126-025-10434-z