Aquaculture International最新文献

{"title":"Frozen detritus: a novel nutritious food for juvenile mussels in captive breeding","authors":"Vojtěch Macháček,&nbsp;Ondřej P. Simon,&nbsp;Jitka Horáčková","doi":"10.1007/s10499-025-01873-5","DOIUrl":"10.1007/s10499-025-01873-5","url":null,"abstract":"<div><p>Captive breeding of freshwater mussels is essential for conservation strategies to maintain populations of endangered bivalve mollusks. In the Czech Republic, breeders use detritus from natural sources, preferably from nearby streams and spring areas, to prepare pearl mussels for release into the target localities to reestablish sustainable populations in their native habitats. This strategy is subject to sudden changes, and breeders must consider different detritus qualities between seasons and the unpredictability of weather conditions. Therefore, harvesting natural detritus on a regular basis is challenging and time-consuming, and more samples require more testing, which increases the cost of captive breeding. We proved that juvenile freshwater pearl mussels grew faster when fed detritus stored frozen in a freezer than when fed the same chilled detritus. Therefore, detritus can be harvested under optimal conditions and stored in a freezer for the remaining season, thereby simplifying and reducing mussel conservation costs. Moreover, this approach offers a sustainable, environmentally friendly method that does not require the industrial production of artificial feeds.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-025-01873-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446550","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":"Effectiveness of the Edwardsiella ictaluri whole-cell vaccine in controlling enteric septicemia of catfish disease in striped catfish (Pangasianodon hypophthalmus)","authors":"Uni Purwaningsih,&nbsp;Sukenda Sukenda,&nbsp;Angela Mariana Lusiastuti,&nbsp;Alimuddin Alimuddin,&nbsp;Widanarni Widanarni,&nbsp;Sri Nuryati","doi":"10.1007/s10499-025-01881-5","DOIUrl":"10.1007/s10499-025-01881-5","url":null,"abstract":"<div><p>In the pangasianodon aquaculture industry at Indonesia, vaccination is considered a backup plan for treating the enteric septicemia of catfish (ESC) diseases. The varied phenotypic and genotypic features of <i>Edwardsiella ictaluri</i> isolates from different aquaculture locations in Indonesia can be used to discover potential vaccine formulations that offer the highest protection against ESC infection. The aim of this work is to establish the best vaccine formulation to prevent ESC infection and to evaluate the synergy and efficacy of multiple antigens in generating immunity in striped catfish. The striped catfish were given 0.1 mL fish⁻¹ of the monovalent, bivalent, and polyvalent-inactivated <i>E. ictaluri</i> bacterin vaccinations intraperitoneally. The assessment of phagocytic activity, lysozyme activity, respiratory burst using the nitro blue tetrazolium (NBT) assay, differential leukocyte count, relative percent survival (RPS), and survival rate (SR) were among the parameters used to evaluate the success of the vaccination. <i>E. ictaluri</i> vaccine preparations from monovalent, bivalent, and polyvalent are inactivated with 0.3% formalin. The monovalent, bivalent, and polyvalent vaccines of <i>E. ictaluri</i> were found to enhance both specific and non-specific immune responses, including increased antibody titers, phagocytic activity, lysozyme production, respiratory burst, and lymphocyte count compared to the control group after 21 days of immune induction and post-challenge test. Our findings indicated that the <i>E. ictaluri</i> polyvalent-inactivated vaccine, which is administered via injection and contains 0.3% formalin, has a greater potential to provide protection than the monovalent and bivalent vaccines. The polyvalent <i>E. ictaluri</i> vaccines were made from the PJbH, P, and PBm1G antigens. Compared to the monovalent, bivalent vaccines, and control, the polyvalent <i>E. ictaluri</i> vaccine, at a dosage of 10¹⁰ CFU fish⁻¹, offered the highest protection significant against multiple <i>E. ictaluri</i> infections, with an RPS value of 61.02%. It could also elicit both specific and non-specific immune responses.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446544","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":"Fecal metabolic variations of Apostichopus japonicus induced by dietary sea mud components in the recirculating aquaculture environment","authors":"Chenyu Song,&nbsp;Ruiguang Dong,&nbsp;Yijing Zhou,&nbsp;Xian Li,&nbsp;Dengpan Dong,&nbsp;Zhitao Huang,&nbsp;Xiefa Song,&nbsp;Guangjun Zhou","doi":"10.1007/s10499-024-01821-9","DOIUrl":"10.1007/s10499-024-01821-9","url":null,"abstract":"<div><p>Sea mud is an important component of diet in <i>Apostichopus japonicus</i> recirculating aquaculture system (RAS), which has a crucial effect on the water environment and metabolic performance of <i>A. japonicus</i>. In this study, we investigated the potential toxic mechanism of sea mud on <i>A. japonicus</i> and interaction mechanism between fecal microorganisms and metabolites in RAS. Thus, this study set up five experimental groups to obtain the optimal amount of sea mud addition to diet. The proportion of sea mud added to diet was 50% (FB1), 67% (FB2), 75% (FB3), 80% (FB4), and 83% (FB5), respectively. The results showed that there was a significant difference in fecal metabolite expression in the comparison group of FB4_vs_FB1 and FB5_vs_FB1 (<i>P</i> ≤ 0.05). A total of 73 potential biomarkers, such as uridine and inosine, were identified by ROC curve analysis that could indicate the toxic effects of sea mud. Topological analysis showed that glycerophospholipid metabolism pathway was upregulated in the comparison group of FB5_vs_FB1 (<i>P</i> ≤ 0.05). However, five pathways including the pyrimidine metabolism pathway, arginine and proline metabolism, purine metabolism, aminoacyl tRNA biosynthesis, and carbapenem biosynthesis pathway were significantly downregulated in group FB5_vs_FB1 (<i>P</i> ≤ 0.05). Glycerophospholipids and pyrimidine pathway in group FB5 was disrupted, leading to immune dysfunction and stress tolerance, which might be the important cause of intestinal inflammation in <i>A. japonicus</i>. Furthermore, a significant correlation between fecal metabolites and microorganisms was found. In brief, our study demonstrated the optimal sea mud addition to diet should be less than 80%, which could provide a basis for the environment protection and optimization of <i>A. japonicus</i> RAS.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10499-024-01821-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446551","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":"Comprehensive analysis of dominant Streptococcus iniae strains from diseased rockfish (Sebastes schlegelii) in South Korea: phenotypic, genetic, and pathogenic profiles","authors":"Tae-Ho Kim,&nbsp;Soo-Jin Kim,&nbsp;Mi-Young Cho,&nbsp;Hyun-Ja Han","doi":"10.1007/s10499-025-01868-2","DOIUrl":"10.1007/s10499-025-01868-2","url":null,"abstract":"<div><p><i>Streptococcus iniae</i> is a pathogen that affects fish, causing considerable economic losses in aquaculture worldwide. From 2002 to 2021, an analysis of 57 strains causing streptococcosis in cultured rockfish (<i>Sebastes schlegelii</i>) in South Korea, using 16S rRNA sequencing, revealed that 82.46% of the cases were caused by <i>S. iniae</i>. To enhance our understanding of <i>S. iniae</i> infection, we investigated its phenotypic, genotypic, and pathogenic profiles. Biochemical characteristics analysed using the API 20 strep kit and haemolytic activities (α-haemolysis, 15.6%; β-haemolysis, 81.3%; γ-haemolysis, 3.1%) varied based on the isolation area. Genotypic profiling was performed using multilocus sequence analysis (MLSA) of ten genes: <i>cpsD</i>, <i>mutS</i>, <i>rpoB</i>, <i>glnA</i>, <i>gyrB</i>, <i>prkC</i>, <i>tkt</i>, <i>pheT</i>, <i>arcC</i>, and <i>groEL</i>. Phylogenetic tree identified two clades, with 90.6% of isolates belonging to MLSA-clade 1. Pathogenicity experiments using juvenile rockfish (average weight, 14.94 g) demonstrated that MLSA-clade 1 isolates caused significantly higher mortality than MLSA-clade 2 isolates following intraperitoneal injection. The lethal dose (LD₅₀) for <i>S. iniae</i> isolates 17FBSIn0006, 23FBStr0601, 23FBStr0602, and 23FBStr0603 were 4.58 CFU/fish, 4.28 CFU/fish, 4.71 CFU/fish, and 5.6 × 10⁵ CFU/fish, respectively. Additionally, <i>Lactococcus garvieae</i> 1708–35 (LD₅₀: 1.57 × 10⁷ CFU/fish) and <i>S. parauberis</i> Namhae17 (LD₅₀: 3.19 × 10⁶ CFU/fish) exhibited relatively low pathogenicity in rockfish. Sequence alignment of c<i>psD-</i>encoded capsular polysaccharide D protein of <i>S. iniae</i> isolates revealed differences at three amino acid positions (123, 129, and 159); these were assumed to be related to the pathogenic diversities of <i>S. iniae</i>. Our findings provide valuable insights into streptococcosis in rockfish.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143446545","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":"Life cycle assessment of circular economy practices in rainbow trout farming: an Italian case study","authors":"Maria Cozzolino,&nbsp;Roberta Salomone,&nbsp;Teresa Maria Gulotta","doi":"10.1007/s10499-025-01872-6","DOIUrl":"10.1007/s10499-025-01872-6","url":null,"abstract":"<div><p>This study examines the potential of circular economy practices to enhance the environmental sustainability of aquaculture, focusing on rainbow trout farming. Utilising life cycle assessment (LCA), the research evaluates the environmental and energy performance of the production system of an aquaculture company situated in Italy and identifies its main hotspots. A functional unit of 1 ton of rainbow trout live weight is used, with data collected directly from the farm throughout the production cycle, from hatchery to on-growing phases, within a cradle-to-gate framework. Secondary data supplement missing information and background processes. The environmental impacts are calculated by applying the CML-IA baseline and Cumulative Energy Demand methods. The results indicate that environmental impacts are distributed between the pre-fattening and on-growing phases, with a lesser contribution from the hatchery phase. Key hotspots include feed and energy usage, prominently affecting global warming, eutrophication and acidification. Then, the effects of three circular actions are evaluated: recycling slurry as fertiliser, reducing pressure on wild fish stocks, shifting to insect-based feed and transitioning from non-renewable energy sources to photovoltaic energy to enhance sustainability further. The transition to insect-based feed could generate the highest benefits, reducing global warming potential by 14% and freshwater aquatic ecotoxicity by 15%, despite minor trade-offs in marine ecotoxicity. The findings underscore the transformative potential of CE in aligning aquaculture with sustainability goals and underline LCA as a crucial tool for identifying environmental challenges and validating strategies.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431012","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":"Ascorbic acid-induced metabolic responses and antioxidant enzyme activity in the green microalga Dunaliella salina under long-term salinity","authors":"Samaneh Eskandarpour,&nbsp;Alireza Einali,&nbsp;Jafar Valizadeh,&nbsp;Elham Bahador","doi":"10.1007/s10499-025-01865-5","DOIUrl":"10.1007/s10499-025-01865-5","url":null,"abstract":"<div><p>Stimulation of antioxidant systems with metabolic changes by signaling molecules such as ascorbic acid (AA) is a common stress tolerance strategy in plants and algae. The effect of AA on tolerance to long-term salinity of the green microalga <i>Dunaliella salina</i> was investigated by studying biochemical changes and enzymatic antioxidant responses. Algal cells adapted to three salinity levels of 1, 2, and 3 M NaCl were treated with or without 1 mM AA in exponential growth phase. AA-untreated suspensions at 3 M showed lower cell number and protein carbonylation but highly accumulated levels of pigments, soluble sugars, starch, hydrogen peroxide, proteins, proline, and free amino acid and enhanced the activity of antioxidant enzymes, proteolysis, and lipid peroxidation. AA-treated suspensions at 3 M increased cell number, while decreased the activities of proteolytic and antioxidant enzymes relative to untreated controls. Protein carbonylation showed a mutual correlation with lipid peroxidation levels in both AA-treated and untreated cultures, indicating a unique pattern of protein modification in <i>D. salina</i>. However, AA was ineffective in the accumulation of metabolites in 1 and 2 M suspensions and showed metabolite-reducing effects in algae grown in 3 M NaCl. These data suggest that exogenous AA can improve the tolerance of <i>D. salina</i> to 3 M salinity by regulating the activity of enzymes involved in the metabolism of carbon sources and diverting its metabolites to growth processes instead of the synthesis of osmoprotectant substances. Therefore, despite its prominent ecological role, AA is of little biotechnological importance due to its negative impact on accumulation of desired metabolites.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431011","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":"Immunity and histopathological changes of shrimp (Litopenaeus vannamei) fed with Melaleuca cajuputi-synthesized gold nanoparticles (MC-AuNPs) supplemented diets at various durations and concentrations","authors":"Nurul Ashikin Elias,&nbsp;Mohamad Sofi Abu Hassan,&nbsp;Nor Asma Husna Yusoff,&nbsp;Noor Aniza Harun,&nbsp;Sharifah Rahmah,&nbsp;Farizan Abdullah,&nbsp;Ahmad Najmi Ishak,&nbsp;Joey Joe Yee Ng,&nbsp;Marina Hassan","doi":"10.1007/s10499-025-01883-3","DOIUrl":"10.1007/s10499-025-01883-3","url":null,"abstract":"<div><p>The green synthesis nanoparticles formulated in aquatic feed were commonly studied nowadays to improve aquatic product immunity and mitigate disease occurrence due to their effectiveness, safety, and lower cost. This study was assessed to investigate the effect of <i>Melaleuca cajuputi</i>-synthesized gold nanoparticles (MC-AuNPs) at various concentrations (i.e., 0%, 10%, 40%, and 70%) and feeding periods: short-term (4 days) and long-term (30 days) on immunity and histology of the whiteleg shrimp <i>Litopenaeus vannamei</i>. The selected concentrations used are based on our previous study on the antibacterial properties of MC-AuNP diets against <i>Vibrio parahaemolyticus</i>. Following feeding, shrimps were then challenged with <i>Vibrio parahaemolyticus</i> to assess their resistance and histological alterations. Results showed that the shrimp fed with 10% and 40% MC-AuNP diets for both short-term and long-term feeding periods increased the biochemical and hematological parameters of the shrimp. After the challenge with <i>V. parahaemolyticus</i>, abnormal lumens were seen, while the hepatopancreatic cells and tissue in the 10% and 40% MC-AuNP diets appeared normal. Improved survival rates were observed in all shrimp supplemented with MC-AuNP diets, particularly in 10% and 40%. The findings suggest that the inclusion of 10% and 40% MC-AuNP diets for short-term feeding periods was recommended to be further studied as shrimp immunostimulants due to their potential to improve shrimp immunity with minimal histopathological changes to the shrimp hepatopancreas.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430944","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":"Reviews on the development of digital intelligent fisheries technology in aquaculture","authors":"Penglong Li,&nbsp;Haibin Han,&nbsp;Shengmao Zhang,&nbsp;Hui Fang,&nbsp;Wei Fan,&nbsp;Feng Zhao,&nbsp;Chaofei Xu","doi":"10.1007/s10499-025-01870-8","DOIUrl":"10.1007/s10499-025-01870-8","url":null,"abstract":"<div><p>The digital transformation of China’s traditional aquaculture industry has promoted the high-quality development of China’s aquaculture industry and helped China become one of the world’s largest aquaculture countries. In this paper, the current status of aquaculture digital transformation will be described from two perspectives: aquaculture process and aquaculture digital technology. The aquaculture process can be divided into eight steps by the eight-step intensive aquaculture method, and each aquaculture step and aquaculture digital intelligence technology are analyzed, revealing that technologies such as the Internet of Things (IoT), cloud computing, artificial intelligence, etc. promote high-speed growth of aquaculture productivity through the adjustment of aquaculture management decisions and the improvement of production factors, and that big data and blockchain technologies contribute to building a more trustworthy environment for online transactions and improving product traceability, offering potential steps toward integrated aquaculture. This review summarizes successful cases of digital transformation in Chinese aquaculture, providing a reference for the future development of digital aquaculture in the world. This review draws on the successful experience of China’s aquaculture transformation to help accelerate the adoption of digital intelligence in aquaculture plants around the world and to serve as a basis for the improvement of current and future digital intelligence technologies.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431016","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":"A method for fusing attention mechanism-based ResNet and improved ConvNeXt for analyzing fish feeding behavior","authors":"Tonglai Liu,&nbsp;Bohao Zhang,&nbsp;Qinyue Zheng,&nbsp;Chengqing Cai,&nbsp;Xuekai Gao,&nbsp;Caijian Xie,&nbsp;Yu Wu,&nbsp;Hassan Shahbaz Gul,&nbsp;Shuangyin Liu,&nbsp;Longqin Xu","doi":"10.1007/s10499-025-01869-1","DOIUrl":"10.1007/s10499-025-01869-1","url":null,"abstract":"<div><p>Accurately identifying fish feeding behavior in complex environments is crucial for optimizing feed management, improving feed utilization efficiency, and reducing aquaculture costs. Complex real-world environments, such as variations in water quality, lighting conditions, and background interference, make it difficult to distinguish feeding states. To address this issue, based on the fusion of attention mechanism-enhanced ResNet and an improved ConvNeXt (ResNet–MoVIT–ConvNeXt), a fish feeding intensity recognition method is proposed. A multi-scenario data augmentation method is designed to simulate complex fish feeding environments replicating real-world complex scenarios. The dual-branch model, combining ResNet and improved ConvNeXt, extracts local features from fish school images. The MobileViT module is then used for multi-level feature fusion, effectively capturing feeding behavior features for accurate feeding recognition. Finally, a multi-factor dynamic feeding strategy is provided, which combines fish biomass, water quality, and feeding states to reduce feed waste. This method introduces the MobileViT module into each stage of the ResNet and improved ConvNeXt networks. The proposed method is evaluated on real-world fish school datasets, achieving an overall accuracy of 99.19% and 98.5% for the medium state, surpassing existing comparative methods.</p></div>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431015","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":"Genetic parameters for shell growth and survival in Portuguese oyster (Crassostrea angulata) larvae, juveniles, and adults","authors":"Thi Nhu Phuong Le,&nbsp;Pierre Boudry,&nbsp;Wayne O’Connor,&nbsp;Robert W. A. Potts,&nbsp;Almas A. Gheyas,&nbsp;Hsu Htoo,&nbsp;Thu Thi Anh Nguyen,&nbsp;Juergen Geist,&nbsp;In Van Vu,&nbsp;Thuy Thi La,&nbsp;Giang Truong Cao,&nbsp;Ha Minh Do,&nbsp;Tran Dang Khanh,&nbsp;Anh Tuan Dam,&nbsp;Anh Minh Nguyen,&nbsp;Sarifah Aini,&nbsp;Sang Van Vu","doi":"10.1007/s10499-025-01875-3","DOIUrl":"10.1007/s10499-025-01875-3","url":null,"abstract":"<p>The Portuguese oyster, <i>Crassostrea angulata</i>, is an important aquaculture bivalve species in Asia, where it is native. This study was carried out to estimate genetic parameters for shell growth and survival over six generations of selection based on harvest whole weight. The phenotypic measurements including shell height and length, and survival rate at days 5, 25, and 150 were collected from the fourth to sixth generations. A linear mixed model was used to estimate heritability and genetic correlations at days 5, 25, and 150 after fertilization. Heritability estimates for shell height and length were high at three studied times, ranging from 0.27 to 0.76. Heritability estimates for survival (<i>h</i>² = 0.23–0.26) were lower than those found for shell growth traits and estimates of genetic correlations between survival and shell growth traits at the three studied ages were low (range − 0.056–0.189) and did not differ significantly from zero, suggesting that an index could be developed to improve two traits simultaneously.</p>","PeriodicalId":8122,"journal":{"name":"Aquaculture International","volume":"33 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143430817","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}