Aquaculture Research最新文献

{"title":"Effect of Exogenous Dietary Protease and a Humic Substance on Growth and Microbial Composition of Nile Tilapia (Oreochromis niloticus) and Romaine Lettuce (Lactuca sativa) in a Biofloc-Integrated Decoupled Aquaponics System","authors":"Uthpala M. Padeniya,&nbsp;Dorcas Lukwesa,&nbsp;Jacob W. Bledsoe,&nbsp;D. Allen Davis,&nbsp;Daniel E. Wells,&nbsp;Benjamin H. Beck,&nbsp;Anita M. Kelly,&nbsp;Luke A. Roy,&nbsp;Timothy J. Bruce","doi":"10.1155/are/4062437","DOIUrl":"https://doi.org/10.1155/are/4062437","url":null,"abstract":"<div>\u0000 <p>Aquaponics and biofloc-based aquaculture systems are environmentally sustainable food production systems. When biofloc technology is combined with hydroponic systems, it expands economic diversity by producing additional value-added products. Dietary additives were incorporated into fish feeds in this trial to improve food production in decoupled aquaponic systems. In this decoupled aquaponic system, the biofloc aquaculture system consisted of nine cylindrical tanks of 3750 L with 170 juvenile Nile tilapia (9.99 ± 0.54 g) stocked in each tank. The fish were randomly assigned to one of three treatment groups: fish fed a commercial feed (Com), commercial diet + protease complex (PC; AG175 by Jefo Nutrition; 175 g 1000 kg⁻¹), and commercial feed + humic substance (HS; MFG50 by Kent Nutrition; 2500 g 1000 kg⁻¹). The feeding trial was conducted for 60 days. A deep-water culture hydroponic system with nine 109 L troughs was used. Each trough corresponded to each tank and contained 15 romaine lettuce plants. The first 4 weeks were fish growth trials, and the last four were fish and plant growth trials. Fish and plant growth parameters showed no differences between treatments. However, the leaf greenness in romaine lettuce plants in the PC treatment had significantly higher chlorophyll content than the other treatments (<i>p</i> = 0.002). When microbial communities were analyzed, significant differences were found in the Shannon diversity indices (fecal, water, and root <i>p</i> &lt; 0.001), Chao1 (fecal <i>p</i> &lt; 0.002, water <i>p</i> &lt; 0.001, and root <i>p</i> &lt; 0.001), and observed species (feca; <i>p</i> = 0.046, water <i>p</i> = 0.017, and root <i>p</i> = 0.015). When beta diversity was analyzed through the Bray–Curtis dissimilarity index, fecal samples (<i>p</i> = 0.001) and root samples (<i>p</i> = 0.002) showed clear differences. The most abundant phyla found in all samples were Pseudomonadota. Overall, this study concluded that these additives did not affect the growth of Nile tilapia and romaine lettuce but influenced the bacterial composition of fish feces, water, and root samples and the chlorophyll content of the plants.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/4062437","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762026","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Mortality Risk of Juvenile Japanese Sea Cucumber Apostichopus japonicus by the Sympatrically Occurring Hermit Crab Paguristes ortmanni","authors":"Nobuharu Inaba,&nbsp;Takuma Matsumoto,&nbsp;Yuji Anaguchi,&nbsp;Kohei Matsuno","doi":"10.1155/are/5245463","DOIUrl":"https://doi.org/10.1155/are/5245463","url":null,"abstract":"<div>\u0000 <p>The density of the hermit crab, <i>Paguristes ortmanni</i>, in the artificial reef of juvenile <i>Apostichopus japonicus</i> increased almost threefold from June to December 2018. Calcareous ossicles of <i>A. japonicus</i> were identified from the stomach contents in 28.8% of the hermit crabs (18.6% in males and 10.2% in females) in December; season hatchery-produced juveniles are frequently introduced into the wild in Hokkaido, Japan. The mortality rate of juvenile <i>A. japonicus</i> by <i>P. ortmanni</i> was estimated to be 2.5 ± 2.4 individuals day⁻¹ based on laboratory predation experiments. Interestingly, 3% to 5% of individuals survived despite being attacked and injured in all trials, escaping on the shells of hermit crabs. Over 50% of females in the ossicle-not-detected group had shield lengths (SLs) smaller than the smallest individual in the ossicle-detected group. The average SL of the ossicle-detected group in females was significantly higher (<i>p</i>&lt; 0.01) than that of the not-detected group, indicating an increased predation risk for <i>A. japonicus</i> juveniles when larger female <i>P. ortmanni</i> were present. The present study offers new insights into the predatory behavior of <i>P. ortmanni</i> toward <i>A. japonicus</i> juveniles, showing that these sympatric hermit crabs present a considerably high mortality risk to <i>A. japonicus</i> juveniles. It also emphasizes the importance of implementing appropriate measures to protect juveniles from predators during the release process, providing an essential viewpoint for enhancing and rebuilding the wild population of commercially important endangered <i>A. japonicus</i>.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/5245463","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143762025","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Modelling Gastric Evacuation Rates in Fish With a General Power Function: A Step-by-Step Guide to Parameter Estimation and Analysis Using R Statistical Software","authors":"Ömerhan Dürrani","doi":"10.1155/are/7309111","DOIUrl":"https://doi.org/10.1155/are/7309111","url":null,"abstract":"<div>\u0000 <p>Accurate modelling of gastric evacuation (GE) is a prerequisite for optimising feeding strategies in aquaculture and improving predator–prey interaction models in ecological studies. However, GE analysis is challenging because of the interdependencies of the variables influencing the evacuation process. To overcome this, a general power function was developed in 1992 and refined in 1998 using non-linear regression techniques. The proposed method is robust for identifying the best-fit evacuation function while simultaneously assessing the effects of potential predictor variables. This study demonstrated the application of R statistical software for parameter estimation of the general power function to characterise the influence of fish size, meal size and temperature on GE rate (GER) in brown trout (<i>Salmo trutta</i> Linnaeus, 1758) and rainbow trout (<i>Oncorhynchus mykiss</i> Walbaum, 1792). The statistical methods presented are remarkably adaptable and applicable to a wide range of GE datasets. Furthermore, they can be extended to incorporate additional variables influencing GE, making them integral tools for advancing research in fisheries management, ecological modelling and aquaculture.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/7309111","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"The Effects of Seawater Temperature on the Performance of the Tropical Sea Urchin Lytechinus variegatus (Lamarck, 1816)","authors":"A. M. Lemus-Granados,&nbsp;M. A. Olivo-Cantillo,&nbsp;K. Medina-Lambraño,&nbsp;A. Rodríguez-Forero","doi":"10.1155/are/4003916","DOIUrl":"https://doi.org/10.1155/are/4003916","url":null,"abstract":"<div>\u0000 <p>As seawater temperatures rise in the ocean due to global temperature change, altered mean precipitation, and weather patterns, native species face uncertain futures. The alteration in thermal tolerance was assessed in wild-captured tropical sea urchins (<i>Lytechinus variegatus</i>) from the Caribbean Sea and then maintained under controlled conditions. Three experiments were performed: (1) favorable growth temperature: after maintaining wild sea urchins at three different seawater temperatures (22, 24 and 26°C) for 70 days, it was observed that 22°C was the best temperature for growth performance. Sea urchins showed daytime behavior (higher activity at 9:00−10:00 h), during this time period; (2) thermal preference (TP): determined with the help of a horizontal camera with a thermal gradient (19–30°C), it showed that the acclimation temperature influenced the TP of sea urchins, since a significantly higher number of animals opted for the temperature at which they had been acclimated; and (3) critical thermal maximum (CTmax) and critical thermal minimum (CTmin): sea urchins exposed to a progressive temperature change, starting from the acclimation temperature, tolerated the increase in temperature (up to 14°C) better than the decrease (up to 12°C). These results thus contribute to our knowledge of sea urchin thermal biology and provide information about the assessment of thermal comfort conditions in sea urchin farming.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/4003916","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143749285","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Harnessing Bacillus Probiotics: An Approach for Vibrio Pathogen Control and Organic Sludge Management in Shrimp Aquaculture","authors":"Harikumar Sampath,&nbsp;Guruchandran Veerasamy,&nbsp;Rajalekshmi Mukkalil","doi":"10.1155/are/2767593","DOIUrl":"https://doi.org/10.1155/are/2767593","url":null,"abstract":"<div>\u0000 <p>Probiotics are essential in shrimp aquaculture as they help improve water and soil quality, ultimately enhancing productivity. This study assesses the probiotic potential of six <i>Bacillus</i> strains by evaluating various functional traits. The inhibitory activity of culture supernatants from each strain was tested against two <i>Vibrio parahaemolyticus</i> strains and <i>V. vulnificus</i> using a growth kinetics assay. Additionally, the ability of these strains to degrade soil organic matter was evaluated by observing their growth in liquid media containing shrimp pond sludge. The strains were characterized by 16S rRNA sequencing and evaluated for carbohydrate fermentation profiles using an analytical profile index (API) system. Safety assessments included hemolysis, antibiotic sensitivity, and a toxicity assay using <i>Artemia salina</i>. Salinity tolerance was assessed through growth kinetics at varying salt concentrations. <i>Bacillus</i> strains PS1, PS2, and PS5 exhibited significant inhibition against <i>V. parahaemolyticus</i>, while PS1, PS6, and PS5 effectively inhibited <i>V. vulnificus</i>. Strains PS1, PS2, PS5, and PS6 showed strong potential for sludge degradation. Identified as <i>Bacillus pumilus</i> PS1, <i>B. licheniformis</i> PS2, <i>B. subtilis</i> PS5, and <i>B. subtilis</i> PS6, these strains were non-hemolytic and sensitive to common antibiotics, including ampicillin, chloramphenicol, ciprofloxacin, streptomycin, and tetracycline. High survival rates of <i>A. salina</i> in the presence of these <i>Bacillus</i> strains confirmed their safety for shrimp use. Additionally, these strains demonstrated growth across a wide salinity range (5–55 practical salinity units). This study supports the suitability and safety of <i>B. pumilus</i> PS1, <i>B. licheniformis</i> PS2, <i>B. subtilis</i> PS5, and <i>B. subtilis PS6</i> for shrimp aquaculture applications.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/2767593","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143707244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Effects of Varying Salinity Levels on Growth, Antioxidant Defense, and Digestive Enzymes Activity of Whiteleg Shrimp (Litopenaeus vannamei) Postlarvae Reared in the Biofloc System","authors":"Abbas Alizadeh,&nbsp;Amir Parviz Salati,&nbsp;Saeed Keyvanshokooh,&nbsp;Hamid Mohammadiazarm","doi":"10.1155/are/9997852","DOIUrl":"https://doi.org/10.1155/are/9997852","url":null,"abstract":"<div>\u0000 <p>This study evaluated the effects of different salinities on the growth and physiology of whiteleg shrimp (<i>Litopenaeus vannamei</i>) postlarvae reared in the biofloc system. A total of 4200 shrimps (PL20) were randomly distributed in 12 850 L biofloc (BFT) tanks (350 PL20 in each tank). Shrimps divided into four experimental groups in the biofloc system with salinities of 3 (BFT3), 8 (BFT8), 10 (BFT10), and 12 ppt (BFT12). Salinities were made by adding sea salt to tap water. During the rearing period, for the optimal growth and development of biofloc in the tanks, a carbon source (brown sugar and wheat flour in equal proportions) was calculated and added to the tanks to adjust the ratio of carbon to nitrogen (12:1). From the third to the sixth week of rearing, the water nitrate concentration was significantly higher in BFT12 and BFT10 (<i>p</i> &lt; 0.05). The total ammonia nitrogen and nitrite concentration at different sampling times did not show significant differences among experimental groups (<i>p</i> &gt; 0.05). After 6 weeks, salinity had no effect on the growth indices including final weight, weight gain (WG), WG rate, specific growth rate (SGR), and survival (<i>p</i> &gt; 0.05). The highest levels of intestinal amylase (28.97 ± 3.46 U/mg protein) and protease (13.28 ± 2.19 U/mg protein) activities were also observed in the BFT3 group (<i>p</i> &lt; 0.05), while lipase activity did not changed. Muscle glutathione (GSH) and malondialdehyde levels and catalase activity did not show significant differences among the experimental treatments (<i>p</i> &gt; 0.05). On the other hand, the highest superoxide dismutase activity and total antioxidant capacity (TAC) was observed in BFT10 (<i>p</i> &lt; 0.05). Body proximate composition of <i>L. vannamei</i> was not significantly different in experimental groups (<i>p</i> &gt; 0.05). Our findings showed that biofloc system could overcome the reported adverse effects of salinity on <i>L. vannamei</i> growth and possibility of rearing <i>L. vannamei</i> in low salinity in the biofloc system.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/9997852","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Impact of Microalgal-Based Diets on Growth, Proximate, Fatty Acid, and Amino Acid Profiles in Daphnia magna","authors":"Kamil Mert Eryalçın,&nbsp;Yusuf Gufran Zeybek","doi":"10.1155/are/9955712","DOIUrl":"https://doi.org/10.1155/are/9955712","url":null,"abstract":"<div>\u0000 <p>Water flea (<i>Daphnia magna</i>) is an important live prey species for feeding larvae and juvenile fish and is also used as a feed ingredient in aquaculture. The growth performance and nutritional content of <i>D. magna</i> can be enhanced by diets. In this study, one freshwater microalgae <i>Euglena gracilis</i> (EG), one marine microalgae <i>Pavlova lutheri</i> (PL), and four commercial dried microalgal-based diets (Algome [dried <i>Schizochytrium</i> sp.], Naturiga [dried <i>Spirulina platensis</i>], ProteinPlus [PP] and AlgomeGrow [dried <i>Chlorella</i> sp.]) were evaluated for <i>Daphnia</i> production. Higher survival (68%) was supported by the PP diet, and total length was improved by using fresh microalgae EG. Algome (8.91%) and PP (8.77%) diets had resulted in higher crude lipid content, whereas the highest crude protein was obtained by the Naturiga diet (55.66%) in <i>D. magna</i>. <i>D.magna</i> fed Algome diet showed the highest docosahexaenoic acid (DHA; C22:6n-3) accumulation, whereas eicosapentaenoic acid (EPA; C20:5n-3) level was enhanced by PP and arachidonic acid (ARA) level was only supported by Naturiga diet. A strong correlation was observed between certain fatty acid groups (Oleic acid, <i>Ʃ</i> n-3, and <i>Ʃ</i> n-3 highly unsaturated fatty acids [HUFAs]) in the <i>D. magna</i> body and diets. In terms of essential amino acid contents of <i>D. magna</i>, the AlgomeGrow diet had the best performance at the end of the experiment.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/9955712","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Acute Stress Effects Over Time on the Stress Axis in the Carp (Cyprinus carpio) Brain","authors":"Constanze Pietsch,&nbsp;Paulina Pawlak,&nbsp;Jonathan Konrad","doi":"10.1155/are/1121460","DOIUrl":"https://doi.org/10.1155/are/1121460","url":null,"abstract":"<div>\u0000 <p>This study investigates gene expression profiles over time in the brain of juvenile carp subjected to several acute stressors, which have not yet been investigated in such detail in this fish species so far. A stress trial with carp was conducted aiming at identifying relevant differences in gene expressions 30, 60, and 90 min after treatment. Using quantitative real-time PCR, the expression of hypothalamic–pituitary–interrenal (HPI)-related axis genes and immediate early genes (IEGs) across four different brain parts (telencephalon, hypothalamus, optic tectum, rhombencephalon). Our findings show that acute stress resulted in pronounced effects on the gene expression patterns in all brain parts between control fish or fish sampled 30, 60, or 90 min after stress application. Furthermore, the gene regulation patterns in feed rewarded and feed control fish frequently show differences to the gene expression patterns of confined and air-exposed fish. These results provide new insights into the dynamics of stress-induced gene regulation in fish, emphasizing the complexity and specificity of the HPI axis response to different stressors over time.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/1121460","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Reassessing the Role of Nanoparticles in Core Fields of Aquaculture: A Comprehensive Review of Applications and Challenges","authors":"Md. Naim Mahmud,&nbsp;Mohammad Mahfujul Haque","doi":"10.1155/are/6897333","DOIUrl":"https://doi.org/10.1155/are/6897333","url":null,"abstract":"<div>\u0000 <p>The application of nanoparticles (NPs) in aquaculture has emerged as a promising frontier to enhance productivity, sustainability, and environmental stewardship. This comprehensive review explores the integration of NPs across core fields of aquaculture, including nutrition, health management, water treatment, breeding performance, sex manipulation, and waste management. NPs offer innovative solutions for improving fish growth rates, enhancing feed efficiency, and providing targeted drug delivery systems (DDSs) to combat diseases. The antimicrobial properties of NPs effectively target and eliminate bacterial, viral, and fungal infections. NPs play a critical role in improving water quality by removing pollutants and pathogens, promoting a healthier aquaculture environment. They also aid in waste management by breaking down and recycling waste, reducing the ecological footprint of aquaculture. However, concerns about the toxicity of NPs present significant challenges. Future directions point to the importance of thorough risk assessments, the establishment of regulatory guidelines, and the adoption of sustainable approaches to fully leverage the advantages of NPs in aquaculture. Further research is essential to understand the long-term impacts and safety of NPs in aquatic ecosystems. Addressing the issues above, the aquaculture industry can leverage NPs to adopt more sustainable and efficient practices, ensuring both food security and environmental protection.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/6897333","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689376","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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":"Utilization of Algal Turf Scrubber Biomass in Sea Urchin (Lytechinus variegatus) Diets","authors":"Magnus Krever,&nbsp;Kosta Tzanis,&nbsp;Destiny Sauls,&nbsp;Ryan Gerald,&nbsp;Michelle Lowery,&nbsp;Henna Gavem,&nbsp;Anthony Siccardi","doi":"10.1155/are/7950801","DOIUrl":"https://doi.org/10.1155/are/7950801","url":null,"abstract":"<div>\u0000 <p>This study evaluated the growth indices in sea urchins fed varying levels of algal turf scrubber (ATS) biomass for the partial replacement of dietary menhaden fishmeal. Juvenile <i>Lytechinus variegatus</i> were fed four formulated diets with differentiating levels of ATS biomass (10%, 10%, 20%, and 50%). Biomass was harvested from two ATS systems, one receiving treated wastewater effluent and the other incorporated into a hydroponics system. A 12-week growth trial was conducted, and each sea urchin (<i>n</i> = 100) was weighed and fed daily. Diets were formulated using Agri-Data Systems Pro 5 (Version 2.41, Agri-Data Systems). Four isonitrogenous and isocaloric diets were prepared. At the end of the growth trial, no significant differences were found in final weight, final diameter, and survival across all diets. All treatments performed well based on condition level and higher levels of ATS biomass did not indicate reduced growth or dietary utilization. Final weights of dry test, and dry gut, were not significantly different between treatments, except for dry gonad compared with menhaden fish meal. These findings indicate that in sea urchin diets, partial replacement of fish meal with ATS biomass is well tolerated.</p>\u0000 </div>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2025 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2025-03-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/7950801","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143689377","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}