Aquaculture Reports最新文献

{"title":"Comparing stunning methods and seasonal effects on biochemical variables and product quality of rainbow trout","authors":"Roberto González-Garoz ,&nbsp;Almudena Cabezas ,&nbsp;Elisabet González de Chávarri ,&nbsp;Montserrat Fernández-Muela ,&nbsp;Andrea Martínez Villalba ,&nbsp;Morris Villarroel ,&nbsp;Álvaro de la Llave-Propín ,&nbsp;Jesús de la Fuente ,&nbsp;Rubén Bermejo-Poza ,&nbsp;María Teresa Díaz","doi":"10.1016/j.aqrep.2025.103117","DOIUrl":"10.1016/j.aqrep.2025.103117","url":null,"abstract":"<div><div>This study compared live chilling (LC) and dry electrical stunning at higher (HI: 400 mA for 0.5 s followed by 200 mA for 1.5 s) and lower (LI: 200 mA for 2 s) intensities in combination with live chilling in rainbow trout (<em>Oncorhynchus mykiss</em>), evaluating their impact on muscle damage, metabolism, and sensory attributes under winter and summer. Trout were stunned, slaughtered and samples were taken for biochemical markers, muscle pH, <em>rigor mortis</em>, texture, color and freshness analysis. Our results showed that stunning method and seasonal conditions significantly influenced product quality, with low-intensity electrical stunning being most effective under warmer conditions. Blood levels of lactate dehydrogenase (LDH) and creatine phosphokinase (CPK) were highest in LC and HI groups, indicating greater muscle damage, compared to LI. Osmolality was also elevated in HI, suggesting increased cell damage. Seasonality influenced muscle metabolism: summer results, compared with winter, showed lower glycogen reserves and reduced glycolytic enzyme activity (lower HK, PK, LDH activity), along with increased gluconeogenesis (higher FBP activity), and also altered oxidative stress, evidenced by up-regulated <em>sod</em> and <em>gst</em> gene expression and down-regulated <em>gpx</em> and <em>cat</em> expression in muscle. Muscle pH at 0 h <em>post-mortem</em> was lowest in LC, while <em>rigor mortis</em> developed faster in this group in summer. Texture analysis showed an interaction between stunning method and season, with slightly higher cohesiveness in LI group in summer. Seasonal effects on texture included lower hardness and springiness but higher adhesiveness in summer. Despite differences, no significant variations in color stability or freshness between stunning methods were observed.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103117"},"PeriodicalIF":3.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216999","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":"Computer vision-based growth prediction and digestive tract assessment in pacific white shrimp (Litopenaeus vannamei)","authors":"Haocheng Zhao ,&nbsp;Mei Liu ,&nbsp;Ziwen Ren ,&nbsp;Keyong Jiang ,&nbsp;Xudong Zhao ,&nbsp;Kefeng Xu ,&nbsp;Yan Gao ,&nbsp;Baojie Wang ,&nbsp;Lei Wang","doi":"10.1016/j.aqrep.2025.103137","DOIUrl":"10.1016/j.aqrep.2025.103137","url":null,"abstract":"<div><div><em>Litopenaeus vannamei</em> is a key economic species in global aquaculture, and monitoring its growth is critical for optimizing feed management, and reducing costs. Traditional manual sampling methods are labor-intensive, error-prone, and can cause stress or injury to shrimp, negatively impacting growth. This study employed computer vision and machine learning to propose an innovative approach for growth prediction and digestive tract assessment in <em>L. vannamei</em>. An improved annotation method was developed to simplify the marking process and reduce weight prediction errors. Furthermore, A new length measurement approach, termed “visual total length”, was introduced to overcome the limitations of traditional measurement techniques. In this study, images of shrimp on feeding trays were analyzed to simulate real aquaculture monitoring conditions, and a prediction system was constructed by combining image segmentation (You Only Look Once v8n-seg, YOLOv8n-seg), classification (YOLOv8n-cls), traditional fitting, and machine learning models (Light Gradient Boosting Machine, LightGBM). The results showed that the improved annotation method also significantly reduced weight prediction errors caused by tail fan area. The visual total length had a high linear correlation with traditional total length (<em>r</em>² = 0.99), effectively allowing it to replace traditional measurements and enhancing applicability in real production environments. The final model achieved an accuracy of over 97 % in predicting length and weight when compared to manual measurements, and over 87 % accuracy in assessing digestive tract fullness. This study provides an efficient and precise method for growth monitoring, laying a solid foundation in future intelligent shrimp aquaculture.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103137"},"PeriodicalIF":3.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217072","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":"Shell yeah! Cockle farming as alternative land use in salinized coastal lowlands − A case study on Texel, The Netherlands","authors":"E.M. Kingma ,&nbsp;M.C. Keur ,&nbsp;S.T. Glorius,&nbsp;J.R. Graal,&nbsp;M.E.B. van Puijenbroek ,&nbsp;R.W. Nauta","doi":"10.1016/j.aqrep.2025.103130","DOIUrl":"10.1016/j.aqrep.2025.103130","url":null,"abstract":"<div><div>Food security is increasingly threatened by overfishing, climate change, and environmental degradation. Over-fishing depletes fish stocks, while climate change disrupts ecosystems and reduces arable land in coastal regions through salinization. As seafood demand rises, sustainable alternatives are needed. This study explores land-based cultivation of the common cockle (<em>Cerastoderma edule</em>) as a potential climate-resilient land use in salinized lowlands. Experiments were conducted in a field laboratory in the reclaimed Polder Wassenaar (Texel, Dutch Wadden Sea), using semi-controlled raceways under four water-flushing regimes. Growth and survival of one-year-old natural Wadden Sea cockles were monitored over the 2023 growing season. Cockles grew primarily from April to June, with an average shell length increase of 7.0 ± 1.0 mm (25.5 ± 2.8 %) by September. Higher flushing rates enhanced growth during the algal spring bloom, while condition indices peaked in May and declined post-spawning. At lower flushing rates, the building up of spawning reserves was likely limited by insufficient food input. Survival averaged 21.3 ± 2.7 %, although one raceway suffered mass mortality, reducing overall profitability. Nevertheless, other raceways achieved economic returns comparable to conventional Dutch agriculture. The findings highlight survival rates as the most important factor for economic viability, requiring improvements in stock quality, seeding time, and stress reduction. With further system optimization and higher stocking densities, high-density cockle farming may provide a profitable and climate-resilient alternative for salinized coastal regions where traditional agriculture is declining.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103130"},"PeriodicalIF":3.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145217000","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":"Molecular insights into performance-related heterosis in offspring have been revealed by a hybrid oyster (Crassostrea dianbaiensis ♀ × C. iredalei ♂)","authors":"Jiangwei Li ,&nbsp;Zhen Zhao ,&nbsp;Ying Pan ,&nbsp;Qinggan Xing ,&nbsp;Haitao Ma ,&nbsp;Chao Yue ,&nbsp;Weitao Wan ,&nbsp;Jun Li ,&nbsp;Ziniu Yu ,&nbsp;Yanping Qin ,&nbsp;Yuehuan Zhang","doi":"10.1016/j.aqrep.2025.103102","DOIUrl":"10.1016/j.aqrep.2025.103102","url":null,"abstract":"<div><div>Interspecific hybridization represents a significant approach for developing enhanced economic traits in aquatic species, and it was established in oyster breeding. However, early research has still needed to further deepen the understanding of the mechanisms of oyster hybridization advantages. Prior research has indicated that <em>Crassostrea iredalei</em> and <em>C. dianbaiensis</em>, as locally unique varieties, are used to hybridize and obtain excellent performance progeny, and analytical hybrid advantages may be representative. In this study, hybrid oyster DI (<em>C. dianbaiensis</em> ♀ × <em>C. iredalei</em> ♂) and its parents were subjected to long-term in situ tracking (180-day-old, 270-day-old, and 360-day-old), and comprehensively evaluated the dynamic regulation of physiological indicators and molecular levels related to hybrid dominance. Our findings revealed that hybrid progeny showed excellent performance in both growth and survival rate. In addition, the survival level of the DI population under different salinity stress is higher than that of its parents, which once again proves that DI has excellent phenotypic characteristics of heterosis. Transcriptome results from both tissues also support the gene expression pattern of the offspring approaching maternal genes. This maternal effect shows similar functional classifications in both the adductor muscle and the mantle, mainly reflected in the proliferation, metabolism, and immune resistance of cells, implying that the hybrid advantage of hybrid progeny comes from the main effect of the maternal parent. Simultaneously, genes exhibiting a positive-dominant expression pattern, originating from parental effector genes, have also been identified. Interestingly, candidate genes (<em>ADAMTS16</em>, <em>FUCA1</em>, <em>PI4KA</em>, <em>SLC7A9</em>, <em>TCF7L2,</em> and <em>CSNK2A2</em>) are considered to be markers related to growth traits in other aquatic animals. Candidate genes associated with immunomodulatory signaling pathways and resistance (<em>SMAD4</em>, <em>MYD88</em>, <em>BIRC3</em>, <em>BIRC7</em>, and <em>PPTC7</em>) were also screened. Notably, genes related to salinity adaptive regulation (<em>SLC23A2</em> and <em>SLC12A1</em>) were screened, suggesting the potential and diversity of molecular regulation of heterosis. In short, hybrid oyster DI has obvious hybrid advantages in growth and stress resistance, POD genes, notably <em>TCF7L2</em> and <em>SLC12A1</em>, are proposed as selectable markers for high-yield, stress-resilient oyster lines, and our findings provide the necessary theoretical perspective for a deep understanding of the hybrid advantages of oysters and their generation mechanism.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103102"},"PeriodicalIF":3.7,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145216998","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":"Effects of environmental factors on growth and VTc toxin biosynthesis in Vibrio parahaemolyticus associated with a shrimp disease","authors":"Zunrong Xu ,&nbsp;Suming Zhong ,&nbsp;Feng Yang ,&nbsp;Fang Li","doi":"10.1016/j.aqrep.2025.103127","DOIUrl":"10.1016/j.aqrep.2025.103127","url":null,"abstract":"<div><div>Highly lethal <em>Vibrio</em> disease (HLVD), also known as translucent post-larval disease, emerged in late 2019 and has led to acute, mass mortality in <em>Penaeus vannamei</em> post-larvae. HLVD is caused by <em>Vibrio</em> strains that produce VTc toxins. In this study, we examined how temperature, pH, salinity, and nutrient availability influence growth and VTc toxin production in the HLVD-causing <em>Vibrio parahaemolyticus</em> strain vp-HL-202005. The bacterium grew well in LB medium at 25–35°C, pH 6–9, and salinities of 5–30 ‰. Whereas the optimal conditions for VTc toxin production were 25–30℃, pH 6–9, and salinity 5–30 ‰. Reducing nutrient supply markedly suppressed both growth and VTc toxin synthesis. Under optimal culture conditions, biomass plateaued at 24 h, whereas VTc toxins continued to accumulate. Because shrimp-pond salinity, pH and nutrient levels usually fall within this favorable range, we conducted immersion-challenge trials to determine whether temperature shifts trigger HLVD outbreaks. When post-larvae were held at 35°C, vp-HL-202005 proliferation was suppressed and cumulative mortality remained below 20 %. Lowering the temperature to 30°C alone did not significantly affect bacterial proliferation or shrimp mortality. However, when the water was simultaneously replaced as the temperature dropped, vp-HL-202005 proliferated rapidly and killed &gt; 90 % of the animals within 3 days. Thus, combined changes in temperature and water conditions may be key triggers of HLVD outbreaks in shrimp farms.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103127"},"PeriodicalIF":3.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155737","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 Nano-selenium supplementation improves growth performance of bullfrog (Lithobates catesbeiana): Involvement of oxidative stress and inflammatory response in liver and intestine","authors":"Chenghang Xu ,&nbsp;Gang Zuo ,&nbsp;Junzhi Zhang ,&nbsp;Bo Zhu ,&nbsp;Kaijian Chen ,&nbsp;Yi Hu","doi":"10.1016/j.aqrep.2025.103118","DOIUrl":"10.1016/j.aqrep.2025.103118","url":null,"abstract":"<div><div>This investigation aimed to examine the impact of nano-selenium as a functional feed supplement on bullfrogs. The experiment selected 630 healthy bullfrogs with the same initial weight (24.25 ± 0.02 g) from the same batch, randomly divided into 3 groups with three replicates each. Three different selenium containing diets (CON, N0.4, N0.8) were set based on the basic diet (control group) and supplemented with different levels of nano-selenium (0, 0.4, 0.8 mg/kg) for an 8-week continuous feeding experiment. The experimental results showed that dietary nano-selenium supplementation significantly improved average weight gain rate, total weight gain rate and the survival rate of the bullfrog (<em>P</em> &lt; 0.05). Supplementation of nano-selenium effectively improved intestinal structure and enhanced digestive enzyme activity, thereby facilitating the absorption of nutrients. In addition, nano-selenium supplementation alleviated liver impairment in bullfrogs due to dietary challenges, as evidenced by more structurally intact hepatocytes, significantly reduced cell vacuolization, and GOT and GPT activity in the nano-selenium group. Moreover, the serum content of acid phosphatase (ACP) and alkaline phosphatase (AKP) were significantly increased followed nano-selenium addition (<em>P</em> &lt; 0.05), indicating the enhanced host innate immune capacity. Dietary nano-selenium intake boosted the antioxidant capacity and relieved inflammatory response of liver and intestine tissues at enzymatic and transcriptional level. In conclusion, nano-selenium can effectively improve the health condition of bullfrogs, combined with the actual production to evaluate the optimal additive amount of 0.4 mg/Kg.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103118"},"PeriodicalIF":3.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155736","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":"Effect of different nutrient sources on the growth, disease resistance, and intestinal health of Exopalaemon carinicauda infected by Enterocytozoon hepatopenaei","authors":"Mingyan Liu ,&nbsp;Jiahan Yu ,&nbsp;Sichen Zhang ,&nbsp;Jinyang Sun ,&nbsp;Junjie Qi ,&nbsp;Yang Zhang ,&nbsp;Cheng Yang ,&nbsp;Fei Yu ,&nbsp;Jianxin Zhang ,&nbsp;Jin Xu ,&nbsp;Binlun Yan ,&nbsp;Huan Gao","doi":"10.1016/j.aqrep.2025.103119","DOIUrl":"10.1016/j.aqrep.2025.103119","url":null,"abstract":"<div><div>The ridgetail white shrimp, <em>Exopalaemon carinicauda,</em> is an economically important mariculture crustacean species in China. Nevertheless, during cultivation, it is often infected with <em>Enterocytozoon hepatopenaei</em> (EHP). Aiming to alleviate the disordered host nutritional metabolism and the reduced immune defense caused by <em>E. hepatopenaei</em> infection, in this study, we formulated and evaluated feeds with three protein levels (30 %, 40 %, and 50 %) and live feed (<em>Artemia</em>, <em>Daphnia</em>, and <em>Hermetia illucens</em>).1）The baits from the different nutrient sources were systematically analyzed for their effects on the growth performance of <em>E. hepatopenaei</em>, and the intestinal tissue structure and microbiota of <em>E. carinicauda</em> infected with <em>E. hepatopenaei</em>. The results showed that: (1) At 28 days after EHP infection, the ridgetail white prawn (Exopalaemon carinicauda) in the 50 % protein group achieved the maximum weight gain rate (WGR) and specific growth rate (SGR), along with the lowest feed conversion ratio (FCR) (WGR: 30.93 %, SGR: 0.96 %/d, FCR: 4.13). Among the biological baits, Daphnia yielded the highest WGR and SGR, as well as the lowest FCR (WGR: 29.27 %, SGR: 0.92 %/d, FCR: 5.58). (2) The loading of <em>E. hepatopenaei</em> in each group showed a trend of first increasing and then decreasing with a prolongation of infection time, indicating that each group had a certain inhibitory effect on the <em>E. hepatopenaei</em> load, and <em>Daphnia</em> had the greatest inhibitory effect. (3) Analysis of the intestinal microbiota showed that the 50 % protein group and the <em>Daphnia</em> group were mainly comprised of beneficial bacteria (e.g., <em>Acinetobacter</em> and <em>Cupriavidus</em> genera), and their functions were enriched in disease-resistant-related pathways such as vitamin synthesis and selenium metabolism. Among them, 50 % of the protein group and the <em>Daphnia</em> group exhibited the highest intestinal villi height, along with a favorable muscular layer thickness. The mechanism by which baits from different nutrient sources regulate <em>E. hepatopenaei</em> infection was demonstrated to be through the “nutrition-immunity-microbiota” axis. Overall, the 50 % protein feed and <em>Daphnia</em> bait were found to significantly improve the growth performance of infected shrimp, inhibit the <em>E. hepatopenaei</em> load, and improve the intestinal microecology, suggesting their potential use as functional baits against <em>E. hepatopenaei</em> infection. These results also provide a theoretical basis for the prevention and control of <em>E. hepatopenaei</em> diseases and the development of other functional baits in aquaculture.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103119"},"PeriodicalIF":3.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155739","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":"Captive breeding of the Queensland yellowtail angelfish, Chaetodontoplus meredithi (Kuiter, 1990): Spawning, early ontogeny, larval rearing, and temperature-salinity impacts on hatching and survival","authors":"Sun-Hon Lin ,&nbsp;Yu-Hsin Tu ,&nbsp;Chun-Ning Lin ,&nbsp;Ming-Yih Leu","doi":"10.1016/j.aqrep.2025.103116","DOIUrl":"10.1016/j.aqrep.2025.103116","url":null,"abstract":"<div><div>The Queensland yellowtail angelfish, <em>Chaetodontoplus meredithi</em>, an economically and ecologically significant marine ornamental species endemic to Australia's eastern coast, has been the subject of limited research on its reproduction and larval development. This study offers the first comprehensive account of natural spawning, early developmental stages, larval rearing, and optimal rearing conditions for the species. Between August 2018 and September 2019, a captive adult pair exhibited year-round spawning, producing 161 spawns over 426 days. Spawning frequency increased significantly with rising water temperatures, showed no significant association with salinity, and exhibited no correlation with lunar phases. Fertilization success was achieved in 87.6 % ± 14.2 % of spawns, with a median fecundity of 2011 eggs per spawn. The fertilized eggs were spherical, transparent, pelagic (0.87 ± 0.02 mm in diameter), and hatched within 15 h at 26.0 °C. Newly hatched larvae measured 2.52 ± 0.08 mm in total length (TL). By 3 days post-hatch (dph), the larvae had grown to 3.02 ± 0.10 mm TL, the yolk sac was completely resorbed, and they had begun exogenous feeding on S-type rotifers and copepod nauplii. Juveniles emerged by 48 dph, averaging 18.09 ± 1.17 mm TL, and demonstrated territorial behaviour. The water quality conditions that resulted in the highest hatch rate and survival activity indices (SAI) were determined to be a salinity of 33 psu and a temperature of 27 °C. These findings expand understanding of Queensland yellowtail angelfish reproduction, supporting captive breeding, larval rearing, sustainable aquaculture, and efforts to mitigate overfishing from the marine ornamental trade.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103116"},"PeriodicalIF":3.7,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155735","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":"Physiological and transcriptomic analysis of the tetraploid Pacific oyster (Crassostrea gigas) under acute ammonia nitrogen stress","authors":"Yuting Meng ,&nbsp;Zan Li ,&nbsp;Weijun Wang ,&nbsp;Yancheng Zhao ,&nbsp;Daowen Qiu ,&nbsp;Yanchun Wang ,&nbsp;Guohua Sun ,&nbsp;Xiaohui Xu ,&nbsp;Yanwei Feng ,&nbsp;Cuiju Cui ,&nbsp;Qiang Wang ,&nbsp;Jianmin Yang","doi":"10.1016/j.aqrep.2025.103125","DOIUrl":"10.1016/j.aqrep.2025.103125","url":null,"abstract":"<div><div>In recent years, high-density oyster farming has led to the deterioration of the environment in the cultured sea area, especially in the high-temperature summer, the decomposition and death of organic organisms and their excreta will lead to the increase of ammonia nitrogen content. Ammonia nitrogen has become one of the major environmental pollutants affecting the normal physiological activities of oysters. The tetraploid <em>Crassostrea gigas</em> is a key germplasm for the production of triploid <em>C. gigas</em>, however, the molecular mechanism of ammonia nitrogen action in its body is not clear. The study showed that within 48 h of exposure to 10 mg/L ammonia nitrogen, the activities of catalase (CAT) and glutathione peroxidase (GSH-Px) in the hepatopancreas increased and then decreased, the activity of superoxide dismutase (SOD) continuously increased, no significant change in malondialdehyde (MDA) content was observed, and tissue damage in the hepatopancreas gradually aggravated. In addition, a total of 2375 differentially expressed genes (DEGs) were identified after ammonia nitrogen exposure. Significantly enriched pathways for most DEGs included FOXO signaling pathway, apoptosis, protein processing in endoplasmic reticulum, and glutathione metabolism pathway, critical for antioxidant defense, protein homeostasis, and apoptotic regulation. Overall, ammonia nitrogen exposure affected the oxidative-antioxidant balance and endoplasmic reticulum homeostatic balance, which ultimately led to apoptosis and tissue damage. These findings will facilitate research into the molecular mechanisms of oyster ammonia nitrogen stress response and aid molecular breeding of ammonia-tolerant <em>C. gigas</em>.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103125"},"PeriodicalIF":3.7,"publicationDate":"2025-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155740","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":"Marine aquaponics for arid and coastal resilience: Closing loops in saline food systems","authors":"Chythra Somanathan Nair ,&nbsp;Ranka Junge ,&nbsp;Ramya Manoharan ,&nbsp;Drishya Nishanth ,&nbsp;Radhakrishnan Subramanian ,&nbsp;Zienab F.R. Ahmed ,&nbsp;Subha Bhassu ,&nbsp;Sreeramanan Subramaniam ,&nbsp;Abdul Jaleel","doi":"10.1016/j.aqrep.2025.103123","DOIUrl":"10.1016/j.aqrep.2025.103123","url":null,"abstract":"<div><div>Marine aquaponics—also referred to as maraponics—integrates land-based marine aquaculture with the hydroponic cultivation of halophytes and salt-tolerant crops, enabling food production in saline environments with minimal freshwater input. This circular system presents a sustainable alternative to conventional aquaculture and agriculture, particularly in arid and coastal regions where freshwater scarcity and soil salinization challenge traditional farming. By recirculating water and nutrients between fish and plants, marine aquaponics reduces waste discharge, enhances resource efficiency, and minimizes environmental impact. This review synthesizes the current state of research on marine aquaponic systems, with a focus on system design, water quality management, nutrient dynamics, species selection, and operational parameters. We explore enabling technologies such as recirculating aquaculture systems (RAS), biofloc systems, and probiotics, alongside the functional role of halophytes in nutrient removal and biomass production. Case studies from diverse climatic zones highlight emerging applications and challenges. Despite growing interest, marine aquaponics faces unresolved issues, including salinity management, economic viability, and knowledge gaps in plant–microbe–fish interactions. We identify critical research priorities and propose future directions to support scalable, commercially viable models. Given its potential to reduce freshwater use and support food production in fragile ecosystems, marine aquaponics offers a promising contribution to climate-resilient and circular food systems.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"45 ","pages":"Article 103123"},"PeriodicalIF":3.7,"publicationDate":"2025-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155326","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}