Aquaculture International最新文献

{"title":"Correlation between intestinal microbiota composition and growth performance in largemouth bass (Micropterus salmoides)","authors":"Dong dong Yu,&nbsp;You xing Xu,&nbsp;Xing han He,&nbsp;Xian ke Zhou,&nbsp;Dong chun Li,&nbsp;Shun Yang,&nbsp;Hui Fei","doi":"10.1007/s10499-025-02279-z","DOIUrl":"10.1007/s10499-025-02279-z","url":null,"abstract":"<div><p>This study aimed to explore the potential correlation between intestinal microbiota and growth performance of largemouth bass (<i>Micropterus salmoides</i>) following a 90-day feeding trial. Based on the final body weight (FBW), 396 fish were divided into four groups: the slow growing (FG) group (FBW: 100–150 g), slow-medium growing (SMG) group (FBW: 150–200 g), fast-medium (FMG) group (FBW: 200–250 g), and fast growing (FG) group (FBW: 250–300 g). Subsequently, the intestinal microbiota of the fish were analyzed. The sequencing results indicated that the genera <i>Cetobacterium</i>, <i>Mycoplasma</i>, and <i>Mycobacterium</i> were predominant, though their abundance varied significantly across the four groups. Furthermore, PICRUSt2 functional prediction analysis indicated that the FG group displayed a significant enrichment of genes associated with amino acid biosynthesis compared to that of the SG group. Finally, redundancy analysis demonstrated a significant positive correlation between intestinal <i>Mycoplasma</i> content and growth performance, suggesting that <i>Mycoplasma</i> may be a key microbe influencing the growth of largemouth bass. Nevertheless, the mechanism by which <i>Mycoplasma</i> affects the growth performance requires further investigation.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210602","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":"Biofloc application in carp polyculture: impacts on water quality, growth, and immune-antioxidant responses","authors":"Nemat Mahmoudi,&nbsp;Naghmeh Saeedi,&nbsp;Seyed Mohammad Esmail Fakharzadeh,&nbsp;Mohammad Hossein Khanjani","doi":"10.1007/s10499-025-02243-x","DOIUrl":"10.1007/s10499-025-02243-x","url":null,"abstract":"<div><p>This 60-day study examined the effects of biofloc technology (C/N ratio of 15:1, using molasses and wheat flour) on water quality, growth, and health in a carp polyculture system, compared to a control group without biofloc. Four carp species, silver carp (<i>Hypophthalmichthys molitrix</i>), common carp (<i>Cyprinus carpio</i>), grass carp (<i>Ctenopharyngodon idella</i>), and bighead carp (<i>Aristichthys nobilis</i>), with initial mean weights of 20, 22, 10, and 10 g, respectively, were stocked in six ponds (8 × 9 × 1 m) at a ratio of 50:25:15:10. Biofloc significantly reduced total ammonia nitrogen (TAN) levels (0.52 vs. 1.05 mg/L) and increased concentrations of nitrate, phosphate, and silica. It also improved final weights of silver and common carp (86.27 and 102.18 g) compared to the control group (71.22 and 87.18 g, respectively). Under biofloc conditions, all species showed significant increases in erythrocyte counts, total serum protein, amylase and lipase activity, total immunoglobulin, myeloperoxidase, and ACH50 levels. Lysozyme activity also increased in silver, bighead, and grass carp. In contrast, leukocyte counts and respiratory burst activity decreased in most species, along with reductions in cortisol and glucose levels across all species. Antioxidant responses varied: catalase activity increased only in bighead carp, while total antioxidant capacity decreased exclusively in grass carp. In conclusion, biofloc technology, likely due to its beneficial microbes (probiotics and heterotrophic ammonia-oxidizing bacteria) and bioactive compounds, improved water quality, growth, and health, especially in silver and common carp, despite increased suspended solids. Overall, combining biofloc with carp polyculture provided synergistic benefits, enhancing fish productivity, water quality, and sustainability.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210604","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":"Impacts of shellfish aquaculture on the ecological carrying capacity of Portunus trituberculatus in Laizhou Bay","authors":"Shihao Chen,&nbsp;Sihan Zhang,&nbsp;Xiuxia Wang,&nbsp;Fan Li,&nbsp;Xiaomin Zhang","doi":"10.1007/s10499-025-02258-4","DOIUrl":"10.1007/s10499-025-02258-4","url":null,"abstract":"","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210603","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":"Evaluation of gut-derived quorum quenchers: battling vibriosis with shrimp-source probiotics using brine shrimp model","authors":"Diksha Bisht,&nbsp;Anuj Tyagi,&nbsp;Naveen Kumar B.T.,&nbsp;Prabjeet Singh","doi":"10.1007/s10499-025-02266-4","DOIUrl":"10.1007/s10499-025-02266-4","url":null,"abstract":"<div><p>Aquaculture is expected to meet the increasing need for aquatic animal proteins. However, rapid expansion of aquaculture, high stocking densities, and poor management practices have all been linked to the prevalence of vibriosis and associated diseases in shrimp farming. The extensive use of antimicrobials has led to considerable adverse effects, notably the development of antimicrobial resistance, emphasizing the need for sustainable and alternative disease management strategies. This study evaluates the potential of quorum-quenching isolates (QQIs) against <i>Vibrio</i> spp using brine shrimp as a model organism. Fifty shrimp from inland saline environments were dissected to isolate bacteria, identified to the species level using MALDI-TOF MS. Based on prior research and initial assessments, <i>Bacillus cereus</i>, <i>Oceanobacillus kimachii</i>, and <i>Bacillus marisflavi</i> were selected as QQIs. For in vivo test, brine shrimp were exposed to <i>Vibrio parahaemolyticus</i> with or without QQIs. Survival rates were assessed at 24 and 48 h. The QQIs effectively degraded AHL molecules and exhibited antagonistic activity comparable to that of the control group. Also, demonstrated significant extracellular enzyme activities crucial for disrupting quorum sensing (QS) molecules. In vivo findings indicate that QQIs, specifically <i>B. cereus</i> and <i>O. kimachii</i>, significantly enhance <i>Artemia</i> survival in the presence of <i>V. parahaemolyticus</i>. Together, the identified QQIs <i>B. cereus</i>, and <i>O. kimachii</i>, demonstrate remarkable quorum-quenching capabilities, rendering them ideal QQP (Quorum-quenching probiotics) for use in various shrimp farming environments for effective disease management.\u0000</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210763","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":"Optimal stocking density enhances culture performance for all‑male culture of Chinese mitten crab Eriocheir sinensis","authors":"Guangbao Zhang,&nbsp;Chenwei Fan,&nbsp;Virakbot Hou,&nbsp;Zhijie Zhou,&nbsp;Di Kong,&nbsp;Dawei Zhao,&nbsp;Xugan Wu","doi":"10.1007/s10499-025-02250-y","DOIUrl":"10.1007/s10499-025-02250-y","url":null,"abstract":"<div><p>The culture of all-male Chinese mitten crab, <i>Eriocheir sinensis</i>, represents a promising strategy to enhance productivity. However, the lack of optimal stocking density for all-male culture of <i>E. sinensis</i> hinders the development of standard culture protocols. This study aimed to determine the optimal stocking density for all-male culture of adult <i>E. sinensis</i>, based on a comprehensive assessment of culture performance, total edible yield, and economic analysis. All-male juveniles with an initial average weight of 8.67 ± 0.36 g were stocked at four different stocking densities (1, 2, 3, and 6 inds./m²) with five replicates for each treatment, and the culture experiment lasted 34 weeks during the grow-out culture period in net-enclosure culture facilities. The results showed that specific growth rate, final body weight (FBW), and survival rate significantly decreased with increasing stocking density (<i>P</i> &lt; 0.05). The meat yield of 6 inds./m² treatment was significantly higher than that of the 2 inds./m² treatment (<i>P</i> &lt; 0.05), but there was no difference in the hepatosomatic index, gonadosomatic index, and total edible yield among the density treatments (<i>P</i> &gt; 0.05). The total yield per unit varied between 168.24 and 289.31 g/m², with the lowest and the highest values at stocking densities 1 ind./m² and 6 inds./m² treatments respectively. Economic efficiency analysis showed total cost significantly increasing with increased stocking densities (<i>P</i> &lt; 0.05). Total return and net profit were affected by stocking density and peaked at a stocking density of 3 inds./m². The highest break-even yield (BEY) and the lowest return on investment (ROI) were obtained at a density of 6 inds./m² (<i>P</i> &lt; 0.05), whereas no significant differences were observed among the 1 ind./m², 2 inds./m², and 3 inds./m² treatments. Moreover, the net profit and ROI followed a quadratic regression on the stocking density, with a maximum at 3.3 inds./m² and 2.5 inds./m², respectively. Based on the observations above, a stocking density of around 2‒3 inds./m² was considered reasonable during the grow-out culture period of <i>E. sinensis</i> in a net-enclosure culture system.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210399","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":"Partial replacements of fishmeal by autoclaved shrimp processing by-product modulates the growth, digestive enzymes, immune-antioxidant, and economic performances for Nile tilapia (Oreochromis niloticus) juveniles","authors":"Suzan O. M. El-Werwary,&nbsp;Asia Yousry Mohamed Ali,&nbsp;Eman A. Sabry,&nbsp;Mohamed N. Monier,&nbsp;Mohsen Abdel-Tawwab","doi":"10.1007/s10499-025-02232-0","DOIUrl":"10.1007/s10499-025-02232-0","url":null,"abstract":"<div><p>In the current investigation, the fishmeal (FM) protein was substituted by shrimp processing by-product (SPB) protein in feeds for Nile tilapia (<i>Oreochromis niloticus</i>) juveniles. Six isonitrogenous and isocaloric feeds were designed to substitute the FM protein with graded levels of SPB protein, i.e., 0% (SPB0), 10% (SPB10), 20% (SPB20), 30% (SPB30), 40% (SPB40) and 50% (SPB50). Nile tilapia juveniles (13—15 g) were allocated into 18 100-L aquaria (15 fish per aquarium) and administered the evaluated feed three times daily until evident satiety for 90 days. It was detected that Nile tilapia given SPB diets exhibited enhanced (<i>P</i> &gt; 0.05) growth indices, especially at SPB40, compared to the control (SPB0). Related to the FM-based diet (SPB0), serum glucose and cortisol did not show substantial (<i>P</i> &gt; 0.05) changes; while, activities of alanine and aspartate aminotransferases were markedly (<i>P</i> &gt; 0.05) declined at SPB40 and SPB50 with no alterations between them. In comparison to the control diet (SPB0), SPB40-fed fish exhibited highest values of total protein, immune, and antioxidant biomarkers. The simple economic assessment suggested that incorporating 40% SPB instead of FM protein in <i>O. niloticus</i> diets represents the optimal choice, where it could reduce the feeding cost by 5.27% for ton fish gain. Interestingly, it is recommended to substitute 40% of FM protein with SPB in feeds for Nile tilapia, <i>O. niloticus.</i></p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-02232-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210583","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":"Iron and potassium doses optimization and its effect on growth and production of pangasius (Pangasianodon hypophthalmus) and basil (Ocimum basilicum L) in a nutrient film technique based aquaponics","authors":"Neerudu Harika,&nbsp;Ajit Kumar Verma,&nbsp;Kishore Kumar Krishnani,&nbsp;Chandrakant Mallikarjun Hittinahalli,&nbsp;Tincy Varghese,&nbsp;Vidya Shree Bharati,&nbsp;Ramakrishna Reddy","doi":"10.1007/s10499-025-02261-9","DOIUrl":"10.1007/s10499-025-02261-9","url":null,"abstract":"<div><p>A 120-day experiment evaluated the effects of varying iron dosages with constant potassium fertigation on pangasius (<i>Pangasianodon hypophthalmus</i>) and basil (<i>Ocimum basilicum</i> L) in a nutrient film technique based aquaponic system. Four iron dosages, i.e. 1.0, 1.5, 2.0, and 2.5 mg/L, were assigned as T1, T2, T3, and T4, respectively, with a constant potassium dose of 150 mg/L and compared to control (without supplementation). The pangasius and basil were stocked at densities of 3.00 kg/m³ and 24 plants/m², respectively, in each treatment group. Results showed the highest mean body weight of fish was recorded in T2 (28.79 ± 0.34 g), which was similar to T3 (28.34 ± 0.31 g), while the control group had the lowest mean body weight (25.23 ± 0.38 g). Basil yield was highest in T3 (583.76 ± 6.96 g) during the third harvest, followed by T2 (566.41 ± 8.45 g), with the control yielding the least (250.55 ± 4.64 g). Water quality parameters (e.g., pH, dissolved oxygen, temperature) remained within acceptable ranges for aquaponic system throughout the study. Iron-potassium supplementation improved the uptake of basil nutrients like phosphorus, nitrogen, potassium, iron, copper, zinc, manganese, sulfur, and boron. Significantly higher carotenoid, chlorophyll a, and b content of basil leaves were recorded in T3 compared to the control. Fish stress markers were highest in T4. Considering the fish body weight, basil yield, water quality, nutrient uptake, chlorophyll content, and fish stress parameters, the optimal iron concentration for basil and pangasius in this system was found to be 1.5–2 mg/L (T2 and T3) with 150 mg/L potassium.\u0000</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210953","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":"Enhancing mucosal immunity in Cyprinus carpio using Lactiplantibacillus plantarum as a probiotic supplement","authors":"Sib Sankar Giri,&nbsp;V. Sukumaran,&nbsp;Jin Woo Jun,&nbsp;Sung Bin Lee,&nbsp;Ji Hyung Kim,&nbsp;Se Chang Park","doi":"10.1007/s10499-025-02217-z","DOIUrl":"10.1007/s10499-025-02217-z","url":null,"abstract":"<div><p>The diet of <i>Cyprinus carpio</i> was supplemented with <i>Lactiplantibacillus plantarum</i> VSG3 at 10⁸ colony-forming units (CFU)/g for 60 days. The effects on <i>C. carpio</i> skin and intestinal mucus were investigated, focusing on various enzymatic and immune parameters. Dietary VSG3 administration increased the levels of total protein in the serum and the skin and intestinal mucus; the immunoglobulin M levels were increased (<i>P</i> &lt; 0.05) in skin mucus. Dietary VSG3 administration increased the superoxide dismutase and catalase activities in the skin and intestinal mucus. The ceruloplasmin and nitric oxide levels were not affected by feeding VSG3. The lysozyme and peroxidase activities were considerably higher in the intestinal and skin mucus in the treated fish. The <i>il-1β</i> and <i>tnf-α</i> expression levels were downregulated, and the transcription levels of tight junction genes <i>occludin</i>, <i>occludin 7</i>, and <i>zo-1</i> as well as those of the adaptor protein <i>myd88</i> were upregulated in the intestine after being fed VSG3. The fish were challenged with <i>Aeromonas hydrophila</i> after 60 days of feeding VSG3. These genes in the intestinal tissues of the challenged fish were analyzed. The dietary VSG3 administration reversed the <i>A. hydrophila</i>-induced changes in the expressions of these genes and of <i>il-10</i>. Administering VSG3 through the diet may strengthen mucosal defense mechanisms by affecting various immunological aspects of the skin and intestinal mucus. VSG3 strengthens the intestinal epithelial barrier in fish. Overall, these results highlight the potential of using <i>L. plantarum</i> VSG3 as a dietary supplement for boosting the immune responses of carp.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210563","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":"Harnessing seaweed biofertilizers for integrated aquaculture–agriculture: advancing environmental sustainability and productivity","authors":"P. Thamarai,&nbsp;V. Poonguzhaly,&nbsp;V. C. Deivayanai,&nbsp;R. Kamalesh,&nbsp;A. Saravanan,&nbsp;A. S. Vickram,&nbsp;Y. P. Ragini","doi":"10.1007/s10499-025-02252-w","DOIUrl":"10.1007/s10499-025-02252-w","url":null,"abstract":"<div><p>The unsustainable use of chemical fertilizers has resulted in soil degradation, nutrient imbalance, and environmental pollution, driving the urgent need for renewable and eco-friendly alternatives. Seaweed biomass, a widely available marine resource, has emerged as a promising feedstock for the development of organic fertilizers due to its rich composition of macronutrients, micronutrients, and bioactive compounds. This review critically examines the potential of seaweed-based fertilizers, positioning them as a unique category of biofertilizers that go beyond traditional organic inputs by acting as both nutrient sources and plant biostimulants. The paper consolidates findings on nutrient composition, biochemical pathways, and nutrient release mechanisms, highlighting how seaweed fertilizers improve soil fertility, microbial activity, and water retention while reducing dependency on synthetic fertilizers. Special attention is given to comparative insights with conventional organic amendments, such as animal manures and compost, to demonstrate their superior efficiency in enhancing crop yield and resilience to abiotic stress. The review also explores innovative approaches, including nano-seaweed formulations and integration into aquaculture–agriculture systems, which enhance nutrient availability, uptake efficiency, and overall sustainability. By identifying research gaps in large-scale production, biochemical interactions, and long-term soil health impacts, this study provides a critical perspective for advancing commercialization and policy frameworks in seaweed-based fertilizer development. Ultimately, the paper underscores seaweed fertilizers as a viable strategy to reduce environmental footprints, restore soil health, and support sustainable food systems in alignment with global climate-smart agriculture goals.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210983","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":"Monocular burst swimming detection in Pacific bluefin tuna (Thunnus orientalis) using deep learning enhanced by ellipse fitting","authors":"Ryuki Hatsumi,&nbsp;Toshinori Takashi,&nbsp;Kei Terayama,&nbsp;Yoshihiro Kuroda,&nbsp;Naoto Ienaga","doi":"10.1007/s10499-025-02267-3","DOIUrl":"10.1007/s10499-025-02267-3","url":null,"abstract":"<div><p>High mortality rates caused by burst swimming represent a significant challenge in the aquaculture of Pacific bluefin tuna (PBT, <i>Thunnus orientalis</i>). PBT are highly sensitive to external stimuli, often responding with sudden, high-speed swimming that results in collisions with tank walls or entanglement in nets, leading to fatal injuries. Previous mitigation efforts, such as artificial light control, have achieved limited success in preventing burst swimming. To address the issue of burst swimming and better understand its causes, a robust and automated detection method is essential. This study develops an automated approach for detecting burst swimming in PBT using deep learning and simple computer vision techniques. Unlike modalities such as sonar or advanced sensors, video-based methods offer non-invasive, continuous monitoring of fish behavior and detailed spatial data. The required setup, consisting of a standard video camera and computer, is both cost-effective and accessible. The proposed method employs advanced segmentation and object tracking techniques, integrating ellipse fitting to estimate the body height of PBT. By leveraging these data, the method calculates the real-scale three-dimensional velocity from two-dimensional video inputs, enabling precise detection of burst swimming events. Evaluated under real aquaculture conditions, the method achieves an F1 score of 75.9%, significantly surpassing the 54.4% of the conventional approach. This research highlights the potential of video-based analysis to enhance our understanding of fish behavior and contributes to the development of sustainable aquaculture technologies, ultimately improving PBT survival rates and production efficiency.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 6","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-02267-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145210562","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}