Aquaculture International最新文献

{"title":"Interactive effects of salinity and dietary lipid source on growth performance, muscle quality, antioxidant capacity, and lipid metabolism in juvenile largemouth bass (Micropterus salmoides)","authors":"Tingyao Zhu,&nbsp;Xiting Lei,&nbsp;Shouxiang Sun,&nbsp;Lihui Sun,&nbsp;Qian Li,&nbsp;Jianhu Jiang,&nbsp;Haiqi Zhang,&nbsp;Xia Yang,&nbsp;Jianlin Guo","doi":"10.1007/s10499-026-02659-z","DOIUrl":"10.1007/s10499-026-02659-z","url":null,"abstract":"<div><p>This study investigated the interactive effects of salinity and dietary lipid source on growth, flesh quality, and lipid metabolism in juvenile largemouth bass (<i>Micropterus salmoides</i>). The experiment employed a 3 × 2 factorial design with three salinities (0‰, 4‰, 8‰) and two lipid sources (soybean oil and fish oil), resulting in six groups designated as S0, S4, S8 and F0, F4, F8. Fish oil improved growth performance and feed conversion, while 4‰ salinity showed comparable benefits over 8‰; these effects were additive rather than synergistic. Serum acid phosphatase and alkaline phosphatase were highest under the combination of 4‰ salinity and fish oil. Na⁺-K⁺-ATPase activity increased with salinity regardless of lipid source. Antioxidant capacity was highest in the 4‰ fish oil group, whereas oxidative stress markers were highest at 8‰. Muscle proximate composition was largely unaffected by the treatments, except that crude lipid was lower in fish oil groups and ash was higher at 8‰. Total amino acids, essential amino acids, flavor amino acids, and n-3 LC-PUFAs were enriched in the 4‰ fish oil group but depleted at 8‰. Peroxisome proliferator-activated receptor <i>α</i> (<i>PPARα</i>) expression was upregulated by salinity under soybean oil diet, while <i>PPARγ</i> and <i>LPL</i> were suppressed by fish oil. In conclusion, 4‰ salinity combined with fish oil diet improved nutritional quality and lipid metabolism, whereas 8‰ salinity was detrimental regardless of lipid source. These findings inform nutritional strategies for largemouth bass in saline-alkaline aquaculture.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluating an exogenous protease as a dietary supplement to improve production performance, nutrient digestibility, and intestinal health in juvenile channel catfish (Ictalurus punctatus)","authors":"Cecilia S. Valente,&nbsp;Jing Huang,&nbsp;Kurt A. Servin,&nbsp;Caitlin E. Older,&nbsp;Penelope M. Goodman,&nbsp;J. Grant Reifers,&nbsp;Fernando Y. Yamamoto","doi":"10.1007/s10499-026-02657-1","DOIUrl":"10.1007/s10499-026-02657-1","url":null,"abstract":"<div><p>In this study, the impact of an exogenous protease supplement on growth performance, nutrient digestibility, and intestinal health was evaluated in juvenile channel catfish (<i>Ictalurus punctatus</i>) through a comparative feeding trial and a digestibility study. A total of 700 channel catfish juveniles (~ 17 g) were distributed in 28 flow-through tanks (25 fish/tank; 110-L), and four experimental diets were randomly assigned to the experimental units: two control diets containing 32% and 36% crude protein levels (32C and 36C), and two test diets supplemented with a protease supplement (175 mg/kg; 32P and 36P). Fish were fed the experimental diets for 12 weeks, and at the end of the feeding trial, fish fed the 36P diet showed significantly lower feed consumption, and fish fed diets containing 36% crude protein showed significantly improved protein conversion efficiency. The dietary treatments did not significantly influence the intestinal microbiota for the diversity metrices and relative abundance of taxa, and did not affect the expression of health-related genes in the intestine. Nevertheless, fish fed diets with 36% crude protein showed significantly higher final weight, weight gain, feed efficiency, and survival, and significantly lower feed consumption. A separate digestibility feeding trial was conducted using the same experimental diets. Fish fed diets with 32P presented higher protein ADC than those fed 32C. These results indicate that the tested exogenous protease can enhance dietary protein digestibility when channel catfish are fed a diet containing 32% crude protein, and that feeds containing 36% crude protein significantly improved their production performance when compared to catfish offered diets with 32% crude protein.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Integrated biomarker responses to dietary polypropylene microplastics in rainbow trout (Oncorhynchus mykiss) under simulated aquaculture conditions","authors":"Muhammed Atamanalp,&nbsp;Mine Köktürk,&nbsp;Muammer Kırıcı,&nbsp;Mahinur Kırıcı,&nbsp;Gonca Alak,&nbsp;Esat Mahmut Kocaman,&nbsp;Veysel Parlak,&nbsp;Sinan Özcan,&nbsp;Ahmet Aydın,&nbsp;Md Masum Billah,&nbsp;Arzu Ucar","doi":"10.1007/s10499-026-02655-3","DOIUrl":"10.1007/s10499-026-02655-3","url":null,"abstract":"<div><p>Microplastics (MPs) are prevalent contaminants in freshwater ecosystems; however, their effects on ecologically and economically important fish species, such as rainbow trout (<i>Oncorhynchus mykiss</i>), remain poorly understood, particularly from an integrated biomarker perspective. This study evaluated the effects of dietary polypropylene microplastic (PP-MPs) exposure on growth performance, hematological parameters, and tissue-specific oxidative stress responses in <i>O. mykiss</i>. Fish were fed with diets containing 0% (control), 10% (10 PP), or 20% (20 PP) PP-MPs (w/w) for 45 days, with responses assessed at 15-day intervals (days 0, 15, 30, and 45). Growth performance (weight gain, feed conversion ratio, and specific growth rate) and hematological parameters (RBC, WBC, HGB, HCT, MCV, MCH, MCHC, and PLT) were evaluated. Oxidative stress, antioxidant defense, DNA damage, and apoptosis were assessed using SOD, CAT, GPx, GR, GSH, ROS, MDA, 8-OHdG, and Cas-3 in the brain, liver, gill, and muscle, while AChE activity was measured in brain tissue as a neurotoxicity biomarker. PP-MPs residues were detected in the gill and gastrointestinal tissues. Dietary PP-MPs exposure reduced growth performance in a dose- and time-dependent manner, while effects on the hepatosomatic index were transient and the viscerosomatic index remained unchanged. Multivariate analyses revealed significant effects of treatment and exposure duration, with an overall response pattern of liver &gt; brain ≈ muscle &gt; gill, indicating systemic but tissue-specific physiological responses. Biomarker responses were not uniformly significant across tissues, and the observed growth impairment may have been influenced by both PP-MPs-related physiological stress and minor dietary nutrient dilution.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148837504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 dietary sodium diformate in improving growth performance, nutrient digestibility, physiological responses, and survival against multiple stressors in Labeo rohita under high stocking density","authors":"Mahroze Fatima,&nbsp;Syed Zakir Hussain Shah,&nbsp;Noor Khan,&nbsp;Wazir Ali,&nbsp;Ayesha Khizar,&nbsp;Rahila Kausar,&nbsp;Nayyab Attiq,&nbsp;Anam Ilyas","doi":"10.1007/s10499-026-02652-6","DOIUrl":"10.1007/s10499-026-02652-6","url":null,"abstract":"<div><p>High stocking density induces stress in fish that deteriorates growth and health, and organic acids offer an effective nutritional approach to alleviate these effects. Therefore, the current trial was conducted to investigate the effects of dietary sodium diformate (NaDF) on growth performance, proximate composition, serum biochemical indices, nutrient digestibility, digestive enzyme activities, and resilience of <i>Labeo rohita</i> against stressors. After acclimation, 675 fingerlings (5.2 ± 0.02 g) were randomly distributed into 15 digestibility tanks (filled volume: 45 L; 45 fish per tank; ~ 5.2 kg/m³). Five isonitrogenous (33.7 ± 0.12% crude protein) diets containing graded levels of NaDF at 0, 2, 4, 8, and 16 g/kg were fed to fish at 3% body weight ratio in triplicates for 60 days. Subsequently, 15 fish were used for various analyses and the remaining fish were divided into 3 groups (10 fish each) and subjected to <i>Aeromonas hydrophila</i> (1 × 10⁷ CFU ml⁻¹), ammonia (1 mg/L) and hypoxia (2.5 mg/L). After the feeding trial, NaDF supplementation significantly improved growth, with fish fed 4–8 g/kg diets showing the highest weight gain percentage (330%), highest specific growth rate (2.43), and lowest feed conversion ratio (1.33–1.36) compared with those in the control (296%, 2.29, and 1.47, respectively). Crude protein content increased in the whole body (~ 5.4–5.8%) and muscle (~ 3.2–4.0%) at 4–8 g/kg NaDF, indicating improved nutrient partitioning. Serum glucose (~ 24–25%) and triglyceride levels (~ 28–40%) decreased, whereas calcium and phosphorus concentrations increased at 4–8 g/kg NaDF, reflecting improved metabolic efficiency. The nutrient digestibility of protein, fat, and dry matter was significantly higher in the 4–8 g/kg groups than in the other groups, accompanied by higher absorption and deposition of calcium, phosphorus, sodium, and zinc. The activities of intestinal digestive enzyme (trypsin, amylase, and lipase) were also elevated in fish fed 4–8 g/kg NaDF, supporting better nutrient assimilation. Survival after <i>A. hydrophila</i> infection, ammonia exposure, and hypoxia stress was significantly higher in 4–8 g/kg NaDF-fed fish (73–87%) than in control fish (30–50%). Supplementation at 4–8 g/kg was most effective, while performance slightly declined at 16 g/kg, and the optimum dose was estimated to be 4.87 g/kg. In conclusion, NaDF is a feed additive that enhances growth, nutrient utilization, and stress resilience in <i>L. rohita</i> in a controlled experimental setup.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mass production of Euplotes sp. in static culture using commercial inert diets and a practical fixed-feeding strategy","authors":"Mônica Yumi Tsuzuki,&nbsp;Daniel William Hoare,&nbsp;Soazig Laumaillé Hoare,&nbsp;Ksenia Skorupa,&nbsp;Ravi Fotedar","doi":"10.1007/s10499-026-02650-8","DOIUrl":"10.1007/s10499-026-02650-8","url":null,"abstract":"<div><p>Ciliates are promising first-feed organism for marine fish larvae because of their small size, nutritional value, and ease of culture. They can bridge the feeding gap until larvae are able to consume larger live prey. Intensive cultivation of ciliated protozoa under controlled conditions remains limited due to difficulties in maintaining high densities in steady cultures. This study evaluated the efficiency of different diets (BY – baker’s yeast <i>Saccharomyces cerevisiae</i>; RD – commercial rotifer diet; and RE – commercial rotifer enrichment product) and tested practical methods for supplying baker’s yeast and improve <i>Euplotes</i> sp. biomass production. Population density, specific growth rate (μ), and total ammonia nitrogen (TAN) were analysed using linear mixed models. Higher population densities growth were achieved with RD (31,386.0 cil mL⁻¹) and BY (21,346.6 cil mL⁻¹) than with RE (9142.3 cil mL⁻¹) after seven consecutive days of cultivation. The RD supported continued population growth during 24-h feed-withdrawal, reaching the highest density (43,727 cil mL⁻¹) on day 8. Feeding a fixed daily amount of baker’s yeast (0.4 g L⁻¹ day⁻¹) proved to be an effective alternative to density-based feeding. Specific growth rate was not affected by treatment in either experiment, although a significant temporal effect was detected in Experiment 2. Although high ammonia levels were observed during cultivation (33–60 mg L⁻¹ NH₃/NH₄⁺), ciliate populations continued to increase without water renewal. These results demonstrate that short production cycles and simplified feeding strategies can support efficient <i>Euplotes</i> sp. cultivation. Further studies should investigate the effect of prolonged ammonia accumulation, the composition of the culture microbiota, and the nutritional profile of ciliates fed culture and enriched with different food sources.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-026-02650-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A novel fish interferon-derived antimicrobial peptide with rapid, broad-spectrum bactericidal activity and low toxicity for aquaculture disease control","authors":"Jing Xu,&nbsp;Yuanyuan Zhou,&nbsp;Yang Cao,&nbsp;Qinjin Li,&nbsp;Shanhao Ye,&nbsp;Jiali Liang,&nbsp;Ruiyao Xie,&nbsp;Xinhua Chen,&nbsp;Xiang-Yang Zhang","doi":"10.1007/s10499-026-02651-7","DOIUrl":"10.1007/s10499-026-02651-7","url":null,"abstract":"<div><p>Antimicrobial peptides (AMPs) have emerged as promising alternatives to antibiotics for controlling bacterial diseases in aquaculture because of their broad-spectrum antibacterial activity and low propensity for inducing antimicrobial resistance. In this study, a 14-amino-acid peptide (SRL14) was rationally designed from the C-terminal α-helical region of type I interferon h (IFNh) of <i>Larimichthys crocea</i> and subsequently optimized by amino acid substitution to generate the derivative peptide RRL14. The antibacterial activity, structural characteristics, physicochemical stability, cytotoxicity, hemolytic activity, antibacterial mechanism, and in vivo therapeutic efficacy of RRL14 were evaluated. RRL14 exhibited potent broad-spectrum antibacterial activity against both Gram-negative and Gram-positive bacteria, with a minimum inhibitory concentration (MIC) of 2 µM against <i>Pseudomonas plecoglossicida</i>. Time-kill assays demonstrated that RRL14 eliminated 99.9% of bacteria within 5 min. Circular dichroism analysis showed that the peptide adopted a typical α-helical conformation in membrane-mimicking environments. RRL14 retained excellent antibacterial activity over a wide range of temperatures, pH values, and salt ion conditions, while exhibiting low cytotoxicity (&gt; 90% cell viability) and minimal hemolytic activity (&lt; 4%). Mechanistic analyses, including propidium iodide uptake and scanning electron microscopy, demonstrated that RRL14 exerts its bactericidal activity primarily through disruption of bacterial membrane integrity. Furthermore, treatment with RRL14 significantly improved the survival of zebrafish challenged with <i>P. plecoglossicida</i> (53.8% versus 3.8% in the PBS control) and markedly reduced bacterial loads in liver tissue. Collectively, these findings identify RRL14 as a promising fish interferon-derived antimicrobial peptide with potent antibacterial activity, excellent stability, low toxicity, and considerable potential for the prevention and treatment of bacterial diseases in aquaculture.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 dietary γ-aminobutyric acid supplementation on growth, feed intake, and intestinal health of the juvenile Chinese mitten crab (Eriocheir sinensis) fed with high plant protein diets","authors":"Longhui Liu,&nbsp;Xuming Lu,&nbsp;Kejing Huang,&nbsp;Guiyuan Li,&nbsp;Yurong Liu,&nbsp;Yuxi Yan,&nbsp;Erchao Li,&nbsp;Liqiao Chen,&nbsp;Xiaodan Wang","doi":"10.1007/s10499-026-02648-2","DOIUrl":"10.1007/s10499-026-02648-2","url":null,"abstract":"<div><p>Due to the global shortage and high price of fish meal, replacing fish meal with plant protein sources is essential for the sustainable development of aquaculture. However, plant protein substitution can exert a series of negative effects on cultured animals, including reduced feed intake and growth performance, and impaired intestinal health. Thus, it is necessary to actively explore nutritional strategies to alleviate these negative impacts. In this study, six experimental diets were formulated: a fish meal control diet containing 35% fish meal; a high plant protein diet containing 15% fish meal and 52% plant protein ingredients, and four high plant protein diets supplemented with GABA at 40, 80, 120, or 160 mg/kg diet. Healthy <i>E. sinensis</i> with initial body weight (0.85 ± 0.05 g) were randomly selected and cultured for 60 days. The results showed that compared with the high plant protein control group, supplementation with 80 and 120 mg/kg GABA in high plant protein diets significantly increased weight gain (WG), specific growth rate (SGR), and feed intake (FI) of <i>E. sinensis</i> (<i>P</i> &lt; 0.05). In addition, GABA supplementation improved the antioxidant capacity of <i>E. sinensis</i>. Specifically, the activities of reduced glutathione (GSH) in the hepatopancreas were significantly elevated, while the malondialdehyde (MDA) contents were significantly decreased in all GABA-supplemented groups (<i>P</i> &lt; 0.05). Supplementation with GABA in high plant protein diets also improved the digestive enzyme capacity of <i>E. sinensis</i>. Specifically, the activities of hepatic lipase (LPS), trypsin (TRY), and intestinal amylase (AMS) were significantly increased (<i>P</i> &lt; 0.05). Furthermore, dietary GABA supplementation in high plant protein diets improved intestinal histomorphology and intestinal microbiota composition, reduced intestinal mucosal permeability, and partially repaired intestinal damage caused by high plant protein. On the other hand, GABA significantly downregulated the expression of appetite-suppressing related genes including Cholecystokinin (<i>CCK</i>), <i>Cholecystokinin receptor</i> (<i>CCKR</i>), <i>AKT serine/threonine kinase (AKT)</i> and Mechanistic target of rapamycin kinase (<i>TOR</i>) (<i>P</i> &lt; 0.05). In summary, dietary supplementation with an appropriate dose of GABA in high plant protein diets may promote the feeding behavior of <i>E. sinensis</i> by downregulating the expression of genes related to appetite suppression, thereby improving its growth performance. Additionally, GABA enhanced the activities of digestive enzymes and antioxidant capacity of juvenile <i>E. sinensis</i>, improved intestinal histological structure and intestinal microbial composition, reduced intestinal mucosal permeability, and thus alleviated the adverse effects caused by high plant protein diets.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782879","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nanoencapsulated α-lipoic acid reduces the negative effects of high soybean meal diets in the white shrimp, Penaeus vannamei","authors":"Adrián Rios-Ortiz,&nbsp;Andrea Manriquez-Patiño,&nbsp;Itandehui Betanzo-Gutiérrez,&nbsp;Rafael Vazquez-Duhalt,&nbsp;María Teresa Viana","doi":"10.1007/s10499-026-02642-8","DOIUrl":"10.1007/s10499-026-02642-8","url":null,"abstract":"<div><p>The present study assessed the effects of chitosan nanocapsules loaded with α-lipoic acid (NcLA) on the performance of <i>Penaeus vannamei</i> under nutritional stress induced by high soybean meal (SBM) content. The nanocapsules (with an average size of 183.4 nm) were prepared and incorporated into shrimp feed formulated to contain 44% SBM of total diet, resulting in an isoproteic and isolipid diet containing 40% crude protein and 7% lipid. Each dietary treatment was performed in triplicate and included nanocapsules containing α-lipoic acid at 0, 75, 150, and 300 mg kg⁻¹ (designated NcLA-0, NcLA-75, NcLA-150, and NcLA-300, respectively). Shrimp (initial weight of 0.22 ± 0.02 g) were fed four times daily. After 42 days, significant differences in growth were observed. The NcLA-150 treatment showed the highest values for thermal growth coefficient (TGC; 1.25 ± 0.08; <i>P</i> &lt; 0.021) and specific growth rate (SGR; 7.91 ± 0.34; <i>P</i> &lt; 0.024), with significant differences. The survival rate was 70% in the control group, whereas the experimental treatments ranged from 76 to 82% with no significant differences among them. Histological examination of the hepatopancreas revealed a tendency toward recovery in the NcLA-150-treated shrimp compared to the control group. Although the statistical value was not significant (<i>P</i> = 0.07), there was a tendency toward improved hepatopancreatic condition compared with the control group, which exhibited clear disruptions of hepatopancreatic tissues. Additionally, although no significant differences were observed in the ANOVA, the polynomial gene expression analysis of antioxidant enzymes showed a descriptive U-shaped trend for hepatopancreatic MnSOD and TRX, whereas CAT and GPx exhibited minimal variation. The study concludes that nanoencapsulated α-lipoic acid can modulate the physiological response of <i>P. vannamei</i> to diets high in soybean meal, demonstrating a dose–response effect. Specifically, a feed containing 150 mg kg⁻¹ nanoencapsulated α-lipoic acid, under our experimental conditions, can mitigate damage caused by excessive antinutritional factors. However, it is recommended to conduct more research with a wider range of doses and use more individual sampling to reduce the standard deviation among treatments, to get a clearer picture, and then recommend the optimal dosage to avoid reversing the benefits.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 7","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148752185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adaptation strategies, perceived effectiveness, and factors associated with selected strategy adoption among seaweed aquaculture households under multiple stressors","authors":"Panpan Yang,&nbsp;Haihong Yuan,&nbsp;Langzi Shen,&nbsp;Wenxuan Cao,&nbsp;Renfeng Ma","doi":"10.1007/s10499-026-02640-w","DOIUrl":"10.1007/s10499-026-02640-w","url":null,"abstract":"<div><p>Small-scale seaweed aquaculture households across island and nearshore coastal settings in Southeast China face increasing climatic, ecological, and market stressors, yet limited attention has been paid to how they combine adaptation strategies under such pressures. Based on 399 household survey responses from Dongtou, Pingtan, and Xiapu, this study examines the types and perceived effectiveness of adaptation strategies among small-scale seaweed aquaculture households and uses a multivariate probit model to analyze factors associated with the joint adoption of four selected strategies. The results show that households commonly adopt multiple strategies in combination rather than relying on a single response. Across the three study areas, strategies that can be embedded in existing production processes, involve lower implementation barriers, and generate quicker returns are more widely adopted, whereas livelihood transition, ecological restoration, delayed-benefit strategies, and strategies requiring high up-front investment are adopted less frequently. Perceived effectiveness shows a partial correspondence with adoption, although clear perception–adoption gaps remain for some strategies. The MVP results further indicate that the four selected strategies are not fully independent and that information access, mutual assistance, and regional context are associated with selected strategy adoption, whereas the direct association between risk perception and adoption is generally limited. These findings suggest that adaptation among small-scale seaweed aquaculture households is not a simple linear response to perceived risk, but a process shaped by resource constraints, information conditions, social relations, and local production and institutional contexts. The study provides empirical evidence for understanding adaptation behavior among seaweed aquaculture households across island and nearshore coastal settings under multiple stressors and offers insights for more targeted and context-sensitive adaptation support.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 6","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"NCSSD-YOLO: a non-causal state space duality-based instance segmentation model for pacific white shrimp","authors":"Weiqiang Ni,&nbsp;Chenqing Zhang,&nbsp;Yiqing Zhang,&nbsp;Siyi Li,&nbsp;Haitao Wang,&nbsp;Chenchen Wu,&nbsp;Lin Luo,&nbsp;Qinglang Liang,&nbsp;Zequn Peng,&nbsp;Shenghua Li,&nbsp;Yanqing Chen,&nbsp;Shiyin Chen,&nbsp;Jian Zhao,&nbsp;Jianlin Guo,&nbsp;Zhangying Ye","doi":"10.1007/s10499-026-02644-6","DOIUrl":"10.1007/s10499-026-02644-6","url":null,"abstract":"<div><p>Pacific white shrimp (<i>Litopenaeus vannamei</i>) raised in intensive aquaculture systems have semi-transparent bodies, small body sizes, and high levels of occlusion. These characteristics pose challenges for existing instance segmentation models, which are constrained by local receptive fields and high computational costs. Therefore, achieving both a lightweight architecture and high segmentation accuracy remains difficult. To address this challenge, we propose NCSSD-YOLO, a lightweight instance segmentation network based on non-causal state space duality. Built upon the YOLO11n-seg architecture, the model reconstructs the feature-processing pipeline from input representation to global modeling. First, the progressive feature extraction stem and fine-grained reorganization downsampling module preserve weak edges and high-frequency textures during input processing and scale transformation, thereby alleviating early feature degradation. Second, the core encoding unit, termed the non-causal duality block, incorporates a non-causal state space duality mechanism and two-dimensional rotary position embedding to model global dependencies and decouple spatial structures in densely populated scenes with linear computational complexity. Gating mechanisms are further used to suppress water-related noise. Experimental results show that NCSSD-YOLO achieves a Mask mAP50-95 of 0.666 and a mask recall of 0.940 with only 2.26 million parameters, corresponding to improvements of 2.5% and 1.7%, respectively, over the baseline model, while substantially reducing missed detections of overlapping individuals. The model reaches an inference speed of 36.8 FPS, thereby enabling high-precision real-time monitoring that is robust to occlusion at low computational cost.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"34 6","pages":""},"PeriodicalIF":3.5,"publicationDate":"2026-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148751101","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}