Journal of The World Aquaculture Society最新文献

{"title":"Preliminary assessment of the nutritive value of dietary exuviae from black soldier fly (Hermetia illucens) pupae in Mozambique tilapia","authors":"Nicholas Romano,&nbsp;Surjya Narayan Datta,&nbsp;Gde Sasmita Julyantoro Pande,&nbsp;Amit Kumar Sinha,&nbsp;Fernando Yamamoto,&nbsp;Steven D. Rawles,&nbsp;Carl D. Webster","doi":"10.1111/jwas.70027","DOIUrl":"https://doi.org/10.1111/jwas.70027","url":null,"abstract":"<p>A by-product of black soldier fly (<i>Hermetia illucens</i>) larvae (BSFL) farming is the chitin-rich “exuviae” (exoskeleton shell) that is left behind after the prepupae larvae metamorphose into adults. Moreover, exuviae is present in BSFL meal and frass. In this 8-week trial, tilapia (initial weight of 2.93 g) were fed diets with increasing inclusions of dietary BSFL exuviae (0%, 0.05%, 0.1%, or 0.5%) and the growth, biochemical composition, hepatic expression set of genes related to metabolism as well as liver/intestinal histomorphology were examined. Growth metrics tended (<i>p</i> = 0.066) to increase linearly with increasing exuviae level, although the feed conversion ratio was unaffected. Muscle P and Zn content were significantly linear and/or quadratic with respect to dietary exuviae level and were highest in fish fed the control diet and lower in fish fed diets with exuviae. Dietary BSFL exuviae at 0.1% and 0.5% significantly downregulated the hepatic expression of lipoprotein lipase, trypsinogen, and cytochrome P450 1A (<i>cyp1a</i>) genes relative to control. Liver histology and scoring revealed mild to severe changes ranging from localized inflammation to necrosis and hemorrhaging with increasing exuviae content, while intestinal histology appeared similar among treatments. Muscle protein and amino acids decreased either linearly or quadratically with increasing BSFL exuviae. Muscle lipid and fatty acid profiles were not significantly impacted by dietary treatments. Results suggest that dietary inclusion of BSFL exuviae up to 0.5% of diet did not limit tilapia performance, but further research is needed on treatments of BSFL meal or exuviae prior to diet inclusion to reduce liver pathologies and potentially enhance fish production.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70027","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143950146","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":"Effect of pre-slaughter crowding on rainbow trout welfare and product quality","authors":"Álvaro De la Llave-Propín,&nbsp;Andrea Martínez Villalba,&nbsp;Rubén Bermejo-Poza,&nbsp;Morris Villarroel,&nbsp;Concepción Pérez,&nbsp;Elisabeth González de Chávarri,&nbsp;Almudena Cabezas,&nbsp;Roberto González Garoz,&nbsp;Montserrat Fernández-Muela Garrote,&nbsp;Jesús De la Fuente,&nbsp;María Teresa Díaz","doi":"10.1111/jwas.70025","DOIUrl":"https://doi.org/10.1111/jwas.70025","url":null,"abstract":"<p>Pre-slaughter processes impact trout production, but the optimization of pre-harvest crowding in an industry affected by global warming has scarcely been studied. In this study, we evaluated the effect of two crowding methods on the welfare of rainbow trout (<i>Oncorhynchus mykiss</i>) across two seasons (winter and summer). Each season 660 trout were distributed into separate tanks, and two crowding methods were applied: reducing water level (WL) and applying lateral compression (LC) within the tanks. Welfare indicators included plasma metabolites and tissue color, while fillet quality was evaluated based on indicators such as muscle color, muscle pH, and rigor mortis. These parameters were evaluated to determine the impact of each crowding method on both fish welfare and fillet quality. Tests were conducted in winter (8.80 ± 1.79°C) (WI) and summer (22.0 ± 0.06°C) (SU). Cortisol, creatine phosphokinase, and lactate levels in plasma were lower using WL, indicating a reduced stress response, supported by various skin color attributes (a*, b*, C*, and h*), liver (a*, C*, and h*), and fillet (h*). Similarly, muscle acidification (pH) was lower using LC, which could lead to potential texture deterioration. Temperature was a crucial factor globally across all parameters, with better results in WI. The combination of both treatments showed, on one hand, abnormal values of cortisol, glucose, and skin color attributes (a* and C*) and fillet (24 h post-mortem) (b* and C*) in summer LC, and on the other, better muscle pH and fillet color (b* and C*) at 0 h post-mortem using WL in WI. Overall, stress response was lower and fillet quality was better in WL fish. This trend was similar in winter compared to summer trout, regardless of the crowding method. Despite the poorer outcomes from LC, whether due to increased swimming difficulties or worse distribution of dissolved oxygen, its use in summer is discouraged due to cumulative effects, recommending its use only in winter when unavoidable.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70025","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944691","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":"Interacting effects of environment and cultivation method on biofouling of farmed oysters (Crassostrea virginica)","authors":"Ruby Krasnow,&nbsp;Thomas Kiffney,&nbsp;Robert Cuddy,&nbsp;Damian C. Brady","doi":"10.1111/jwas.70012","DOIUrl":"https://doi.org/10.1111/jwas.70012","url":null,"abstract":"<p>Biofouling-induced increases in labor costs are among the most impactful factors determining the technoeconomic feasibility and profitability of aquaculture operations. Understanding how different cultivation methods and environmental conditions influence the severity of biofouling is crucial to support informed decision-making by farmers and minimize the economic impacts of biofouling in the aquaculture industry. This study used a factorial design to compare the extent and type of biofouling across three common cultivation methods (floating bags, floating cages, and bottom-culture) in exposed and sheltered locations that differ in temperature, salinity, turbidity, and wave energy. The ratio of fouling weight to oyster wet weight for oysters grown in floating bags was significantly higher than for oysters grown in floating cages, which were in turn significantly more fouled than bottom-planted oysters. Oysters cultivated in the exposed location had a significantly higher fouling ratio than oysters cultivated in the sheltered location. However, this pattern was driven by the stark difference in fouling by location for the floating bags, indicating that differences in temperature and wave exposure between sites would have the greatest impact on fouling severity for oysters grown in floating bags. Common fouling organisms included solitary and colonial tunicates, filamentous algae, and hard fouling (mussels, oyster spat, and barnacles). The significant differences observed in the composition and severity of oyster biofouling by gear type and growing site underscore the importance of considering fouling potential when evaluating the profitability of a farming strategy and the need for further development of region- and gear-specific biofouling mitigation strategies.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143939081","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":"Isolation, identification, and pathogenicity of γ-hemolytic Streptococcus iniae in Selenotoca multifasciata","authors":"Zi-Chen Zhao,&nbsp;Ming-Li Xiang,&nbsp;Jia-Chang Zhu,&nbsp;Yan Wang,&nbsp;Gui-Hua Li,&nbsp;Zhi-Hong Zhong,&nbsp;Yun Sun,&nbsp;Heng-Wei Deng,&nbsp;Wei-Liang Guo,&nbsp;Yong-Can Zhou","doi":"10.1111/jwas.70023","DOIUrl":"https://doi.org/10.1111/jwas.70023","url":null,"abstract":"<p><i>Streptococcus iniae</i> is a fish pathogenic bacterium distributed worldwide. It has a wide range of hosts, strong infectivity, causes high mortality, and severely hinders the healthy development of the aquaculture industry. A fish epidemic broke out in a <i>Selenotoca multifasciata</i> aquaculture farm, Hainan Province, China, and resulted in numerous deaths. Sick fish showed symptoms including erratic swimming, skin darkening with generalized hemorrhages, and internal organ and brain hemorrhages. A dominant strain, SI03, isolated from the brain of a dying <i>S. multifasciata</i>, exhibited high virulence, and was identified as serotype I γ-hemolytic <i>S. iniae</i>. Subsequently, virulence gene mRNA expression, infection kinetics, as well as the histopathology in <i>S. multifasciata</i> infected with SI03 were analyzed. Results showed that the mRNA expression levels of <i>scp</i>I, <i>sim</i>A, <i>pdi</i>, <i>pgm</i>A, and <i>cfi</i> genes in γ-hemolytic <i>S. iniae</i> SI03 were significantly higher than those in β-hemolytic <i>S. iniae</i> ATCC 29178. These genes are associated with adhesion, invasion, and immune evasion. While the mRNA expressions of <i>sag</i>A-<i>sag</i>I genes, which are associated with the streptolysin S, were significantly lower than those of β-hemolytic <i>S. iniae</i> ATCC 29178. After being challenged with SI03, the number of bacteria in all the tested fish tissues increased significantly in 24 h. The challenged fish showed symptoms similar to those of the fish from which SI03 was originally isolated. It appears that <i>S. iniae</i> SI03 may have developed a compensatory pathogenic mechanism for hemolysis deficiency. This mechanism enhances its adhesion, invasion, proliferation, and immune evasion abilities. The results of this research provide a reference basis for the prevention and control of <i>S. iniae</i>.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70023","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938912","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":"Aquaculture and early life stages of the Hawaiian Potter's angelfish (Centropyge potteri)","authors":"Kent A. Glover,&nbsp;Chatham K. Callan","doi":"10.1111/jwas.70024","DOIUrl":"https://doi.org/10.1111/jwas.70024","url":null,"abstract":"<p>The Potter's angelfish (<i>Centropyge potteri</i>), a Hawaiian endemic reef fish, has long been prized in the global aquarium trade, with approximately 9000 individuals collected annually from the wild before Hawai‘i's 2021 ban on commercial aquarium fish collection. This study marks the first detailed description of aquaculture techniques with replicated results for the species, providing foundational data on larval growth and survival critical for advancing culture techniques for <i>C. potteri</i> and other reef fishes. By iteratively refining feeding protocols, survival rates to settlement improved from 0% to 3.4%, largely by addressing acute mortality points during feed transitions. Egg and larval development closely resembled other <i>Centropyge</i> species, with flexion between 14 and 21 dph, and settlement behaviors observed at ~60 dph. Spawning in captivity followed lunar cycles, with broodstock producing viable eggs nightly from December 2022 to May 2024. Larval rearing trials compared three feeding protocols along with the effects of egg stocking densities and live algae densities. Early development revealed critical vulnerabilities during feed transitions, particularly with newly hatched <i>Artemia</i> and dry feeds, which were mitigated by delayed introductions. Continuous live algae (<i>Tisochrysis lutea</i>) and adult <i>Parvocalanus</i> copepods through settlement were essential for success, while larger tanks (1000 L) improved survival by minimizing environmental stress compared to smaller tanks (200 L). The revised feeding regime supported the highest survival rates with algae densities of 75,000–150,000 cells/mL. The results emphasize the importance of diet composition and timing, environmental stability, and tank management for successful larval rearing. Future research should prioritize pathogenic bacteria control in live feeds and refining feed transitions to further improve aquaculture efficiency. This study aligns with efforts to transition the industry toward sustainable aquaculture practices, reducing pressures on wild populations and supporting reef conservation while offering a scalable model for aquaculture of other high-value reef fish species.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70024","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143938909","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":"Dietary inclusion of curry plant (Helichrysum italicum) extract in rainbow trout (Oncorhynchus mykiss) culture: Growth performance and gene expression related to digestion, antioxidant, and immune responses","authors":"Ayşegül Aydın,&nbsp;Dogukan Kaya,&nbsp;Boran Karataş,&nbsp;Derya Guroy","doi":"10.1111/jwas.70022","DOIUrl":"https://doi.org/10.1111/jwas.70022","url":null,"abstract":"<p>In this study, a 60-day trial was conducted to determine the effects of curry plant (<i>Helichrysum italicum</i>) extract in the diet of rainbow trout (<i>Oncorhynchus mykiss</i>) with an initial average live weight of 15.84 ± 0.05 g on growth performance and gene expressions associated with digestion, antioxidant capacity, and immune response. Four experimental diets were formulated as a basal diet (Control; C) and diets supplemented with varying levels of curry plant extract (CP05; 0.5 g kg⁻¹, CP1; 1 g kg⁻¹, and CP2; 2 g kg⁻¹). Growth indices showed significant increases in all curry plant extract groups compared to the C group (<i>p</i> &lt; 0.05). Similarly, higher levels of trypsin, lipase, and amylase expressions were observed in the curry plant extract groups compared to the C group (<i>p</i> &lt; 0.05). The superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPx) gene expression levels were elevated in the CP extract groups (<i>p</i> &lt; 0.05). The expression levels of interleukin-1β (IL-1β), tumor necrosis factor (TNF-α), and interleukin-8 (IL-8) were also influenced by the incorporation of CP extract into the diet, showing significant changes (<i>p</i> &lt; 0.05). In conclusion, this study experimentally demonstrates that supplementing the diet of rainbow trout with CP extract can positively influence healthy growth parameters.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70022","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143892873","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":"Evaluation of bigano snail (Stramonita haemastoma) as a seafood resource","authors":"Xuan Dong,&nbsp;Hong Lin,&nbsp;Yifen Wang","doi":"10.1111/jwas.70018","DOIUrl":"https://doi.org/10.1111/jwas.70018","url":null,"abstract":"<p>Bigano snail, <i>Stramonita haemastoma</i>, commonly known as oyster drill or red-mouthed rock whelks, has gained growing interest as a potential seafood product. However, to date, there is a notable lack of preliminary evaluation regarding its commercial viability. In this study, we analyzed the proximate compositions, amino acid profile, color and texture attributes of freshly harvested bigano snails using cost-effective methodologies. We also compared the potential of bigano snails as a seafood resource with that of widely consumed species such as white shrimp and black tiger shrimp. Our findings revealed that the foot portion of bigano snails demonstrated favorable nutritional attributes, including high protein, low fat, and acceptable color characteristics. Additionally, the amino acid profile of the snail foot indicated its potential to deliver a sweet, seafood-like flavor, which enhances its taste acceptability. However, textural properties of its overcooked-for-safety foot portion (boiled in water for 5 min) presented challenges, as it exhibited suboptimal textural quality for seafood marketing compared to other shellfish. To fully realize the commercial potential of bigano snails as a globally viable seafood species comparable to white shrimp and black tiger shrimp, developing safe and standardized reduced cooking methods to optimize textural properties is essential.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 3","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70018","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888820","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":"Toward the use of innovative environmentally sustainable feed in organic aquaculture: Impact on growth performance, health, and welfare of gilthead seabream (Sparus aurata)","authors":"Lola Toomey,&nbsp;Sébastien Alfonso,&nbsp;Elena Mente,&nbsp;Isabella Bitetto,&nbsp;Eleonora Fiocchi,&nbsp;Amedeo Manfrin,&nbsp;Phelly Vasilaki,&nbsp;Walter Zupa,&nbsp;Marie-Laure Bégout,&nbsp;Maria Teresa Spedicato,&nbsp;Giuseppe Lembo,&nbsp;Pierluigi Carbonara","doi":"10.1111/jwas.70021","DOIUrl":"https://doi.org/10.1111/jwas.70021","url":null,"abstract":"<p>Organic aquaculture aims to provide sustainable aquatic products, and utilizing innovative aquafeeds with less fish meal is crucial. This study evaluated the impact of a cost-effective and environmentally friendly diet (51% replacement with plant/animal protein sources like fermented soy, pea, krill, squid, and yeast meals) on gilthead seabream (<i>Sparus aurata</i>) growth, health, and welfare using a multiparametric approach (growth, swimming activity, blood health, and welfare indicators). The innovative diet showed no adverse effects on growth performance and survival. Hematological and biochemical blood indicators demonstrated minimal alterations, with only lactate levels increasing, suggesting no compromise in overall welfare. Immune features indicated a potentially stronger innate immune response in fish fed the innovative diet, as shown by higher levels of total proteins, alpha 1, and beta 1. Finally, a slight difference was observed in swimming activity between diets, but primarily occurred at the end of the day. A comprehensive multiparametric analysis and multi-criteria decision analysis indicated better global welfare and health status with the innovative diet compared to the control. While the innovative diet showed promising results for gilthead seabream organic aquaculture, further long-term investigations are necessary to explore the underlying causes of the observed immune parameter changes.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70021","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861694","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":"Corn-fermented protein as a replacement for fish meal in diets for Atlantic salmon, Salmo salar, parr: Growth, feed utilization, antioxidant activity, non-specific immune response, and gut histopathology","authors":"Jeongwhui Hong,&nbsp;Jose G. Ortiz,&nbsp;Brian C. Small","doi":"10.1111/jwas.70020","DOIUrl":"https://doi.org/10.1111/jwas.70020","url":null,"abstract":"<p>Fishmeal (FM) is still believed to be the gold standard protein source, especially for high-value aquaculture species such as salmon. However, due to supply and price fluctuations, coupled with environmental issues in FM production, FM is no longer a sustainable source from economic and environmental perspectives. Recently, high-protein corn co-products, such as high-protein distiller's dried grains (HP-DDG) and corn-fermented protein (CFP) have attracted much attention as alternative protein ingredients. Therefore, a 12-week feeding trial was carried out to assess a CFP product on growth performance, feed utilization, antioxidant and non-specific immune responses, and intestinal histopathology as an FM replacer in the diets of Atlantic salmon parr, <i>Salmo salar</i>. Five isonitrogenous (51% crude protein) and isocaloric (22.3 MJ kg⁻¹) diets were formulated to substitute 0% (CFP₀), 25% (CFP₂₅), 50% (CFP₅₀), 75% (CFP₇₅), and 100% (CFP₁₀₀) of FM with a corresponding amount of CFP. The experimental diets were fed to satiation, three times daily, to quadruplicate groups of Atlantic salmon parr (11.6 ± 0.06 g). At the end of the 12-week feeding trial, the final weight, weight gain, and survival of fish did not significantly differ between treatment groups. However, in fish fed CFP100, both the feed conversion ratio (FCR) and the protein efficiency ratio (PER) exhibited significant differences in comparison with those of fish fed other treatments, with FCR being significantly higher and PER being significantly lower. Quadratic regressions of PER and FCR against the dietary CFP inclusion levels suggest that the optimal substitution level was between 18.6% and 25%. Parameters related to antioxidant and non-specific immune responses were not significantly impacted by the dietary treatment except for lysozyme activity. Lysozyme activity exhibited a significant increase in fish fed CFP₂₅ in contrast to the fish fed CFP₇₅. With respect to distal intestinal morphology, fish fed CFP₀ and CFP₂₅ exhibited significantly higher fold height, while fish fed CFP₅₀ showed a reduction in fold height. The mean score of evaluated histopathology features was not significantly influenced by the dietary CFP levels. In conclusion, based on the results of the analysis of variance (ANOVA), replacing 50% of FM with CFP can be implemented without any detrimental effects on growth performance, feed utilization, non-specific immunity, and intestinal health during the parr phase of Atlantic salmon production.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70020","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143856898","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":"Dietary selenium nanoparticles (SeNPs) mediate intestinal microbiome and microbiota-derived metabolites regulating the growth and immunity of Nile tilapia","authors":"Eman Zahran,&nbsp;Bei Wang,&nbsp;Kwaku Amoah,&nbsp;Samia Elbahnaswy,&nbsp;Fatma Ahmed,&nbsp;Omar Abdel-Hamed Ahmed Farid,&nbsp;Engy Risha,&nbsp;Mamdouh Eldesoqui,&nbsp;Mahmoud G. El Sebaei,&nbsp;Ferdaus Mohd Altaf Hossain,&nbsp;Lina Jamil M. Abdel-Hafez","doi":"10.1111/jwas.70019","DOIUrl":"https://doi.org/10.1111/jwas.70019","url":null,"abstract":"<p>Maintaining a healthy intestine is essential for growth and host defense mechanisms of farmed fish, particularly those densely stocked. In this context, maintaining a healthy intestinal microbiota for proper digestion, absorption, and integrity of the mucosa is of utmost importance. Nano-form (SeNPs)-enriched-<i>Pediastrum boryanum</i> (Turpin) exhibits antimicrobial, antioxidant, and antitumor properties. Therefore, SeNPs are valuable nutritional supplements for farmed aquatic animals. Algogenic Se nanoparticles (SeNPs, 79.26 nm) were synthesized from the green microalga <i>Pediastrum boryanum</i>. A Nile tilapia (<i>Oreochromis niloticus</i>) basal diet was blended with 0.75 or 1.5 mg/kg dry feed of the SeNPs for and fed for 8 weeks. Comprehensive arrays of intestinal biomarker-related parameters were investigated. Supplementation with SeNPs, particularly at a 1.5 mg/kg diet, improved growth performance, amylase and lipase activity, serotonin metabolite level, and intestinal morphometry. In addition, SeNPs supplementation suppressed serotonin levels. SeNPs at a 1.5 mg/kg diet were observed to be the optimal dose, as they showed better results concerning the increase in beneficial microbes and decrease in pathogenic microbes, demonstrating the potential role of SeNPs in growth improvement and enhanced intestinal functions. The sum of our data underscores the benefits of supplementing Nile tilapia feed with SeNPs to promote the growth and profitability of aquaculture.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"56 2","pages":""},"PeriodicalIF":2.3,"publicationDate":"2025-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70019","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143849310","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}