Aquaculture International最新文献

{"title":"Comparison of biosynthetic astaxanthin with other sources: effects on growth, pigmentation, and environmental stress resistance in Pacific white shrimp, Litopenaeus vannamei","authors":"Yingrui Sun,&nbsp;Mei Liu,&nbsp;Keyong Jiang,&nbsp;Chen Zhong,&nbsp;Yan Gao,&nbsp;Baojie Wang,&nbsp;Lei Wang","doi":"10.1007/s10499-025-01986-x","DOIUrl":"10.1007/s10499-025-01986-x","url":null,"abstract":"<div><p>This study aimed to evaluate and compare the effects of biosynthetic astaxanthin derived from <i>Saccharomyces cerevisiae</i> and astaxanthin from other sources on growth, body color, immunity, and environmental stress tolerance of <i>Litopenaeus vannamei</i>. Juvenile shrimp (1.08 ± 0.19 g) were divided into four groups: the Ctrl group was fed the basic diet, while the other three experimental groups were supplemented with 50 mg/kg of astaxanthin from <i>S. cerevisiae</i> (SC), chemically synthesized astaxanthin (DSM), or astaxanthin from the red yeast <i>Phaffia rhodozyma</i> (PR) for 42 days. The study then subjected the shrimp to heat, low salinity, and hypoxia stress conditions. Results showed that only the SC group significantly improved WGR and SGR compared to the Ctrl group. The SC group is similar to the DSM group in improving body color and superior to the PR group. Both SC and PR groups demonstrated enhanced expression levels of <i>MnSOD</i>, <i>CAT</i>, <i>LZM</i>, and <i>Toll</i> genes compared to the Ctrl and DSM groups. Notably, under environmental stress conditions, including heat, low salinity, and hypoxia stress, the SC group maintained higher survival rates and showed significantly enhanced expression of <i>GSH-PX</i>, <i>CAT</i>, <i>LGBP</i>, <i>ACP</i>, <i>HSP70</i>, and <i>HIF-1α</i> genes. These results indicated that biosynthetic astaxanthin from <i>S. cerevisiae</i> enhances growth, body color, immune, and antioxidant capacity of shrimp. Moreover, it can also better mitigate oxidative stress by regulating the expression of immunity and stress-related genes and demonstrated superior stress resistance compared to other astaxanthin sources, especially under hypoxic conditions. These findings suggest that biosynthetic astaxanthin from <i>S. cerevisiae</i> represents a promising alternative for coping with environmental fluctuations, extending live transportation duration, and potentially reducing industry reliance on traditional astaxanthin sources.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888805","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":"Growth parameters, water footprint, and digestive enzyme activity of pirarucu Arapaima gigas juveniles reared in a biofloc system","authors":"Rocío Maraví Aguilar,&nbsp;César Alvarez Sánchez,&nbsp;Giovanna Sotil,&nbsp;Maria Angélica da Silva,&nbsp;Juliana Ferreira dos Santos,&nbsp;Luis Otavio Brito,&nbsp;Jessie Vargas Cárdenas","doi":"10.1007/s10499-025-01974-1","DOIUrl":"10.1007/s10499-025-01974-1","url":null,"abstract":"<p>This study investigated the effects of biofloc on the growth parameters, water footprint, and digestive enzyme activity of <i>Arapaima gigas</i> juveniles. Two treatments were used: biofloc technology (BFT) and clear water exchange (CWE) by 50% day⁻¹. The fish were stocked at a density of 30 fish m⁻³ and fed experimental feed for 45 days. No significant differences were observed in the yield, survival, final weight, or feed conversion ratio among treatments. However, significant differences were observed in water quality, where the total ammonia nitrogen, N-NO₂, and N-NO₃ were higher and the water footprint was lower in the BFT treatment compared to that of CWE. Total proteolytic activity, trypsin, and lipase of fish cultured in BFT increased at the end of the experiment; however, chymotrypsin and amylase remained unchanged over time. In CWE, total protease increased over time, trypsin and lipase decreased, and chymotrypsin and amylase remained unchanged. After 25 days of culture, total protease, trypsin, and chymotrypsin were significantly equal among treatments. Lipase activity was higher in BFT, while amylase activity was higher in CWE. At the end of the experiment, the total protease and lipase were higher in fish in the BFT, trypsin and chymotrypsin were significantly equal, and amylase was higher in fish in CWE. These results demonstrate that it is possible to reared <i>A. gigas</i> in a biofloc system, without significant differences in growth performance, in addition to the decrease in the apparent water footprint and the presence of enzymatic activity.</p>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888614","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":"Community participation and habitat assessment determine sea cucumber grow-out site suitability in Selayar Islands, Indonesia","authors":"Qurratu Ainin,&nbsp;Lisa Fajar Indriana,&nbsp;Sainal Sainal,&nbsp;Dwi Cahyo Josohadi Subroto,&nbsp;Andi Ismainna,&nbsp;Christopher Kelly,&nbsp;Siti Holisoh,&nbsp;Jito Sugardjito","doi":"10.1007/s10499-025-01995-w","DOIUrl":"10.1007/s10499-025-01995-w","url":null,"abstract":"<div><p>Sustainable use of sea cucumbers (<i>Holothuria scabra</i>) includes sea cucumber juvenile grow-out operations in coastal areas until they reach commercial size (sea ranching). One factor that influences the success of sea cucumber grow-out is the location of the sea ranching. A prototype sea ranching program was carried out in Selayar Islands Regency of Indonesia with the involvement of the local community to determine the most suitable location for sea cucumber grow-out through community participation and habitat assessment in the Bontoharu and Bontosikuyu Districts. Participatory mapping through focus group discussion (FGD) was conducted as a community-led approach to determine suitable locations. The participatory mapping was evaluated through a multi-criteria decision analysis based on 12 ecological and socioeconomic parameters to determine grow-out sites for <i>H. scabra</i>. Substrate type and the effects of seasonal changes are crucial ecological parameters as part of habitat assessment. Site access is the most important socioeconomic parameter in determining sea cucumber ranching locations. The results of the participatory mapping show that 13 and 15 sites were recommended in Bontoharu and Bontosikuyu, respectively, and the multi-criteria decision analysis shows four suitable sites in Bontoharu and one suitable site in Bontosikuyu for sea ranching. Participatory mapping involving the local community helped socialize community participation and served as a basis for habitat assessment. Therefore, the selected sites were determined by the suitability of the parameters and the aspirations of the local community.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888801","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":"Salinity and phosphorus as key regulators of methane emissions in tropical aquaculture ponds","authors":"Latika Patel,&nbsp;Sarath C. Gowd,&nbsp;Rashmi Singh,&nbsp;Shoji D. Thottathil","doi":"10.1007/s10499-025-01984-z","DOIUrl":"10.1007/s10499-025-01984-z","url":null,"abstract":"<div><p>Aquaculture plays a crucial role in meeting the increasing demand for protein-rich food. However, aquaculture production also comes with a large carbon footprint, partly due to the substantial emission of greenhouse gases, particularly methane (CH₄), during the aquaculture production. Yet, our understanding on the magnitude, pathways, and drivers of CH₄ emission from aquaculture ponds is limited, particularly in the Asian continent where more than 90% of global aquaculture production occurs. In this study, we quantified CH₄ concentrations, air–water fluxes, production in anoxic sediments, and oxidation in the water column across multiple tropical aquaculture ponds where one of the most commonly cultivated shrimp species, <i>Litopenaeus vannamei</i>, is farmed. Field measurements showed that the diffusive CH₄ emissions, with a mean value of 3.40 ± 1.76 mg m⁻² day⁻¹, varied greatly—ranging from 0.68 to 7.12 mg m⁻² day⁻¹—and were regulated by a suit of environmental variables. Salinity and total phosphorus (TP) concentration were the key determinants of diffusive CH₄ flux: CH₄ emission decreased with increasing salinity, while it increased with TP. Accordingly, our results suggest that shifting from freshwater to saline water aquaculture can decrease CH₄ emissions, thereby reducing the carbon footprint of aquaculture production. However, an increase in phosphorus concentration can offset this salinity-driven emission reduction. Therefore, management practices should prioritize reducing phosphorus loads to effectively mitigate CH₄ emissions and enhance the sustainability of aquaculture.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888803","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":"Aeromonas veronii infection in cultured Oreochromis niloticus: prevalence, molecular and histopathological characterization correlated to water physicochemical characteristics, with the protective autochthonous probiotic","authors":"Amr Fadel,&nbsp;Mahmoud A. Mahmoud,&nbsp;Mohamed Abdelsalam,&nbsp;El-Sayed Hemdan Eissa,&nbsp;Ahmed H. Sherif","doi":"10.1007/s10499-025-01960-7","DOIUrl":"10.1007/s10499-025-01960-7","url":null,"abstract":"<div><p>This study characterized the bacterial pathogen associated with summer mortality in cultured Nile tilapia (<i>Oreochromis niloticus</i>) between June and August 2024 across two different farms. As well as, the autochthonous probiotic was isolated as a preventive strategy. Phenotypic characteristics identified <i>Aeromonas veronii</i> and confirmed by molecular sequencing of the <i>gyrB</i> gene. Total prevalence was higher in farm 1 (65.19%) than in farm 2 (51.11%), with respective mortality rates of 38.84% and 25.25%. Prevalence rates peaked in August, which was correlated significantly (<i>P</i> ≤ 0.05) with elevated water temperature, pH, ammonia, and salinity. Clinical signs included erratic swimming, skin hemorrhages, and corneal opacity, with necropsy including ascitic fluids, friable liver, and splenomegaly. Challenge assay confirmed LD50 of 2.7 × 10⁷ CFU/mL <i>A. veronii</i> and 66.67% cumulative mortality. Histopathological alterations showed intermuscular edema, glomerular atrophy of the kidneys, vacuolar degeneration of the liver, spleen necrosis, and hemosiderosis of intestinal tissues. <i>A. veronii</i> showed resistance to ampicillin, tigecycline, fosfomycin, and sulfamethoxazole-trimethoprim. To control <i>Aeromonas</i> infection, 18 autochthonous probiotic isolates were obtained from the healthy <i>O. niloticus</i> gut and identified as <i>Bacillus paralicheniformis</i> through phenotypic analysis and 16S rRNA gene sequencing. These probiotic isolates demonstrated strong antagonistic activity against the pathogenic <i>A. veronii</i>, ecto-enzymatic producing activities, and high bile salt tolerance. After comprehensive screening, seven <i>Bacillus</i> strains met safety criteria, exhibiting high sensitivity to antimicrobials, non-hemolytic activity, and non-pathogenic in the challenge test. This study confirms <i>A. veronii</i> as the causative agent of tilapia summer mortality and presents promising autochthonous probiotics for preventive strategies in aquaculture.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-01960-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888615","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":"Attitudes of Chinese aquaculture stakeholders towards live transport and farmed fish welfare, with a focus on the Hunan region","authors":"Yifei Yang,&nbsp;Clive Phillips,&nbsp;Edward Narayan,&nbsp;Qingjun Shao,&nbsp;Kris Descovich","doi":"10.1007/s10499-025-01975-0","DOIUrl":"10.1007/s10499-025-01975-0","url":null,"abstract":"<div><p>In China, the world’s largest fish producer, fish are generally transported live from farms to points of sale or processing. However, there is little published literature on live fish transport in China or aquaculture stakeholder attitudes towards fish welfare. This study investigated transport practices within the Chinese freshwater fish industry and opinions around fish welfare among aquaculture stakeholders. Online and face-to-face surveys were conducted with 252 participants from 18 provinces across China, with more than half from Hunan Province. Participants represented the fish production, sales, government, and research sectors. Responses indicated that over 75% of freshwater fish are transported live, generally in compartmented tanks with water-holding systems on purpose-built trucks. Destinations were primarily wholesale markets with journey durations ranging from less than one hour, up to eight hours. Dissolved oxygen, water temperature, and staff experience were reported as the most important factors affecting fish welfare during transport. While over 60% of participants were unaware of the specific term “animal welfare”, three-quarters recognised a link between fish welfare and product quality. A similar proportion acknowledged that fish are sentient, with respondents educated at the tertiary level having greater awareness of, and concern for, fish welfare. As the concept of animal welfare is emerging among aquaculture stakeholders, these findings provide valuable insights into transport practices and opportunities for improving both animal welfare and product quality. The results also contribute to a better understanding of the potential welfare risks to fish during transport in China, especially among Chinese fish welfare researchers.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-01975-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888806","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":"PSG-Crossformer: a hybrid model for long-term dissolved oxygen prediction in aquaculture","authors":"Min He,&nbsp;Meng Cui,&nbsp;Qinyue Zheng,&nbsp;Longqin Xu,&nbsp;Shuangyin Liu","doi":"10.1007/s10499-025-01983-0","DOIUrl":"10.1007/s10499-025-01983-0","url":null,"abstract":"<div><p>Dissolved oxygen (DO) levels are a critical indicator of water quality in aquaculture environments and are essential for the healthy development of fish. However, the dynamic nonlinear changes and complex interactions between multiple water quality parameters make accurate multivariate long-sequence DO prediction challenging. Previous long-sequence multivariate DO multi-step prediction models primarily relied on LSTM and GRU architectures. However, these models are limited by issues such as cross-dimensional dependencies, noise, and computational complexity, making accurate long-sequence DO prediction difficult. To address these issues, this paper proposes the PSG-Crossformer model, an innovative approach that integrates principal component analysis (PCA), Savitzky-Golay (SG) filter, and the Crossformer architecture. PCA reduces input dimensionality, alleviating computational complexity. SG filtering removes noise from the data, enhancing model accuracy. The Crossformer, featuring dimension-segment-wise (DSW) embedding, a two-stage attention (TSA) layer, and a hierarchical encoder-decoder (HED) structure, effectively captures cross-dimensional dependencies between variables. Experimental results show that the PSG-Crossformer model outperforms LSTM, GRU, Transformer, SVM, and other benchmark models in long-sequence DO prediction. Additionally, the PSG-Crossformer can predict DO changes up to 6 h in advance and effectively handles seasonal variations, especially in extreme environments such as winter, where its prediction accuracy remains high, demonstrating outstanding adaptability and robustness. The proposed model provides more accurate predictions for water quality management and facilitates efficient aquaculture environment monitoring and timely interventions, thereby improving farming efficiency and reducing risks.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888804","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":"Anti-nervous necrosis virus activity of the growth hormone releasing peptide-6, GHRP-6","authors":"Daniel Álvarez-Torres,&nbsp;Rebeca Martínez,&nbsp;Patricia Moreno,&nbsp;M. Carmen Alonso,&nbsp;Esther García-Rosado,&nbsp;Mario P. Estrada,&nbsp;Julia Béjar","doi":"10.1007/s10499-025-01987-w","DOIUrl":"10.1007/s10499-025-01987-w","url":null,"abstract":"<div><p>Growth hormone-releasing peptide 6 (GHRP-6), is a six-amino acid synthetic peptide that acts as a ghrelin analog and has shown growth-promoting and immunomodulatory activities in several fish species. This study evaluates the effects of GHRP-6 against the infection with the nervous necrosis virus (NNV), an important pathogen affecting the central nervous system of a wide range of fish species, including European seabass (<i>Dicentrarchus labrax</i>). For the in vitro evaluation, E11 cells were treated with GHRP-6 before and/or during viral infection, resulting in higher cellular survival rates, lower viral genome replication, and lower production of infective viral particles compared with control cells. These results indicate that GHRP-6 protects E11 cells from the viral infection. In order to conduct the in vivo evaluation, European seabass specimens were intraperitoneally injected with GHRP-6, resulting in the significant upregulation of several immune genes, such as <i>TNF-A</i>, <i>RTP3</i>, and <i>IgM</i>, in head kidney and intestine. Furthermore, NNV replication was lower in the brain from GHRP-6 injected fish than in controls, and the brain antiviral immune response was clearly modulated in treated fish. These results support the potential of GHRP-6 as an antiviral compound that could contribute to prevent viral diseases in fish farms, a priority for the aquaculture industry.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-01987-w.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888611","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":"Research on fine-tuning strategies for text classification in the aquaculture domain by combining deep learning and large language models","authors":"Zhenglin Li,&nbsp;Sijia Zhang,&nbsp;Peirong Cao,&nbsp;Jiaqi Zhang,&nbsp;Zongshi An","doi":"10.1007/s10499-025-01942-9","DOIUrl":"10.1007/s10499-025-01942-9","url":null,"abstract":"<div><p>Given the characteristics of aquaculture disease texts, which include the dense use of specialized terminology, diverse symptom descriptions, and complex disease progression stages, traditional classification methods often suffer from incomplete feature extraction and the inadequate utilization of domain knowledge. This study proposes a hybrid approach that combines deep learning with large model fine tuning, hereafter referred to as TABEM. The proposed approach utilizes an enhanced deep learning model for preliminary text classification and incorporates a dynamic adaptive multi-head attention (DAMHA) mechanism to effectively mitigate the loss of semantic information in long sequence texts. Additionally, a feature fusion module is integrated to further augment the model’s capacity to interpret complex texts. In cases of incorrect results, a large language model is employed for correction, and a fine-tuning dataset for this model is subsequently constructed. LoRA is employed to fine tune ChatGLM4-9B, thereby optimizing its performance within the aquaculture domain. Experimental results demonstrate that, through the collaborative interaction of the feature fusion module and the DAMHA mechanism, the model achieves an F1 score of 98.75%, surpassing other comparative models. The fine-tuned ChatGLM4-9B excels across BLEU-4, ROUGE-1, ROUGE-2, and ROUGE-L metrics, achieving scores of 99.52, 99.23, 99.24, and 99.46, respectively, thus demonstrating superior text classification accuracy. TABEM significantly enhances the fine-grained classification capability of aquaculture disease texts, thereby providing essential technological support for early disease warning and the development of precise diagnostic knowledge bases.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883733","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 light intensity on the growth, non-specific immunity, and ovarian development of juvenile ridgetail white prawn (Exopalaemon carinicauda)","authors":"Xiaofang Lai,&nbsp;Qing Zhang,&nbsp;Xiaopeng Zhang,&nbsp;Chunmei Lin,&nbsp;Huan Gao","doi":"10.1007/s10499-025-01989-8","DOIUrl":"10.1007/s10499-025-01989-8","url":null,"abstract":"<div><p>Light intensity is a critical environmental factor in aquaculture, profoundly influencing aquatic species’ growth and reproductive performance. This study investigated the effects of five light intensities (0, 100, 350, 600, and 1600 lx) on growth performance, non-specific immunity, ovarian development, and biochemical analysis of juvenile female ridgetail white prawn (<i>Exopalaemon carinicauda</i>, body length 5.16 ± 0.02 cm and wet weight 1.96 ± 0.01 g) under a 12L:12D photoperiod for 30 days, using natural light (0–1600 lx) as a control. Growth parameters including final wet weight (Wt), weight gain rate (WGR), specific growth rate (SGR), and survival rate (SR) exhibited a unimodal response, peaking at 100 lx (2.66 ± 0.03 g, 70.58 ± 2.09%, 1.03 ± 0.02%, and 57.78 ± 1.92%, respectively). Digestive enzyme activities including Chymotrypsin, α-amylase (α-AMS), and lipase (LPS) increased with light intensity, reaching maximum levels at 1600 lx (12.23 ± 0.51 U/mg prot, 24.36 ± 0.86 U/mg prot, and 5.29 ± 0.48 U/mg prot, respectively). In contrast, key non-specific immune enzymes, superoxide dismutase (SOD) and alkaline phosphatase (AKP), displayed optimal activity at 100 lx (12.95 ± 0.96 U/mg prot and 109.66 ± 12.31 U/mg prot, respectively). Ovarian development indices revealed an inverse trend between hepatosomatic index (HSI) and gonadosomatic index (GSI), with GSI peaking at 100 lx (4.59 ± 0.05%) and HSI at 1600 lx (3.60 ± 0.05%). Biochemical analysis demonstrated significantly higher total cholesterol (TC), triglycerides (TG), and vitellogenin (Vg), and estradiol (E2) levels at 100 lx (0.86 ± 0.04 mmol/g prot, 0.08 ± 0.01 mmol/g prot, 17.73 ± 0.37 µg/mL, and 52.09 ± 2.75 ng/L, respectively) (<i>P</i> &lt; 0.05). Ovarian nutrient accumulation (22.60% of protein, 25.37% of lipid, and 0.04% of glycogen) was maximized at 100 lx, significantly surpassing hepatopancreatic reserves (<i>P</i> &lt; 0.05). These findings indicate that 100 lx is the optimal light intensity for promoting growth, enhancing ovarian development, and optimizing nutrient accumulation in female <i>E. carinicauda</i>, providing valuable insights for crustacean reproductive management.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143883734","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}