Journal of The World Aquaculture Society最新文献

{"title":"Induced breeding of knife fish, Notopterus notopterus, using pituitary gland extract, human chorionic gonadotropin, and luteinizing hormone releasing hormone-analog hormones","authors":"Manish Devkota,&nbsp;Bui Min Tam,&nbsp;Bibhuti Ranjan Jha,&nbsp;Kshitiz Kandel","doi":"10.1111/jwas.70120","DOIUrl":"https://doi.org/10.1111/jwas.70120","url":null,"abstract":"<p>This study was performed to determine the efficiency of various hormones on the ovulation of knife fish, <i>Notopterus notopterus</i>, in captivity. In total, 81 fish were grouped into nine treatments with three replicates, maintaining the sex ratio 1:2 (male to female). Brood fish in all the groups were given pituitary gland extract (PGE) 2 mg kg⁻¹ body weight (BW) as a preliminary dose and different doses of PGE (6, 8, 10 mg kg⁻¹ BW), human chorionic gonadotropin (3000, 4000, 5000 IU kg⁻¹ BW), and luteinizing hormone releasing hormone-analog (LHRH-a) (150, 200, 250 μg kg⁻¹ BW) plus domperidone (DOM) (15, 20, 25 mg), respectively, as the final dose. The optimal hormone combination was identified based on key spawning parameters: ovisomatic index (5.2%), fecundity (487 eggs), egg diameter (3.27 mm), fertilization rate (95.2%), embryo development time (159 h), and hatching rate (70.3%). Accordingly, the recommended hormone protocol for initiating breeding in knife fish is a priming dose of PGE (2 mg kg⁻¹ BW) followed by LHRH-a (200 μg kg⁻¹ BW) combined with 20 mg DOM for optimal reproductive performance. These findings mark a pivotal step towards establishing captive breeding protocols for knife fish, offering a sustainable solution to seed scarcity while contributing to the species' aquaculture potential and conservation.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70120","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237858","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 physiological and molecular tools to assess ovarian stages in the black tiger prawn (Penaeus monodon)","authors":"Gourab Chowdhury,&nbsp;Josephine Nocillado,&nbsp;Tianfang Wang,&nbsp;Abigail Elizur,&nbsp;Scott F. Cummins,&nbsp;Tomer Ventura","doi":"10.1111/jwas.70118","DOIUrl":"https://doi.org/10.1111/jwas.70118","url":null,"abstract":"<p>Advancing knowledge of the molecular mechanisms governing vitellogenesis and spawning in the black tiger prawn, <i>Penaeus monodon</i>, requires an efficient method for identifying ovarian stages. Several physiological and molecular tools have been employed to define these stages in laboratory studies. However, it is necessary to assess these tools collectively to develop comprehensive staging approaches for studies aimed towards sustainable broodstock management. This study evaluated gonadosomatic and hepatosomatic indices (GSI and HSI), hemolymph Brix index, hemolymph 20-hydroxyecdysone (20HE), and hemolymph vitellogenin (Vg) levels in eyestalk-ablated <i>P. monodon</i> broodstock at defined ovarian stages. Ovarian stages were classified by ovarian histology and oocyte diameter measurements. Circulating Vg concentrations were measured by a newly developed enzyme-linked immunosorbent assay (ELISA). The results demonstrated that GSI correlated negatively with HSI; the hemolymph Brix index significantly increased from the previtellogenic to the late vitellogenic stage; and hemolymph 20HE levels declined as the ovaries matured. Vg rose sharply in early vitellogenesis and remained elevated throughout ovarian development. The Vg ELISA was highly specific, sensitive, and reliable, enabling the detection of the Vg molecule and its fragments in hemolymph samples. Consequently, the hemolymph Brix index, 20HE, and Vg ELISA can be used as non-lethal tools to investigate physiological and biochemical changes in hemolymph during ovarian maturation in <i>P. monodon</i>. This comprehensive approach would support studies aimed at assessing alternative methods of eyestalk ablation, as well as research evaluating the effects of diet, environmental manipulation, and genetic selection, among others.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70118","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237715","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":"Molecular characterization of CCKR in Ctenopharyngodon idella and its involvement in the intestinal immune response to bacterial challenges","authors":"Ran Peng,&nbsp;Jingjing Yang,&nbsp;Huilan Mo,&nbsp;Miao Zhang,&nbsp;Xin Li,&nbsp;Xia Zhang,&nbsp;Meixing Guo,&nbsp;Kelan Jin,&nbsp;Fufa Qu,&nbsp;Jianzhong Li,&nbsp;Yunyun Zeng,&nbsp;Xixun Zhou,&nbsp;Zhuangwen Mao,&nbsp;Zhen Liu,&nbsp;Jianzhou Tang","doi":"10.1111/jwas.70095","DOIUrl":"https://doi.org/10.1111/jwas.70095","url":null,"abstract":"<p>Cholecystokinin receptor (CCKR), an important recognition receptor for the gastrointestinal hormone cholecystokinin (CCK) in the endocrine system, plays a crucial role in regulating immune responses in mammals. In this study, a novel cholecystokinin receptor (<i>Ci</i>CCKR) was identified from the grass carp <i>Ctenopharyngodon idella</i>. Similar to other reported CCKR proteins, <i>Ci</i>CCKR features seven transmembrane helical domains, an ERY motif located in transmembrane region III, and a NPIIY motif found in transmembrane region VII. Expression profiling indicated that <i>Ci</i>CCKR was primarily expressed in the brain, with a lower level of expression in the intestine. Phylogenetic analysis revealed that <i>Ci</i>CCKR belonged to the fish cluster and showed the closest relationship to <i>Megalobrama amblycephala</i>. In vivo injection experiments demonstrated that <i>Ci</i>CCK and <i>Ci</i>CCKR exhibited a strong response to stimulation with <i>Aeromonas hydrophila</i>, <i>Aeromonas veronii</i>, and Muramyl Dipeptide (MDP), with expression levels significantly up-regulated in the intestines of grass carp. In cases of intestinal inflammation induced by MDP, CCK can significantly decrease the expression levels of inflammatory factors (<i>Ci</i>TNF-α, <i>Ci</i>IL-1β, <i>Ci</i>IL-8) and the <i>Ci</i>PepT1/<i>Ci</i>NOD2 pathway (<i>Ci</i>PepT1, <i>Ci</i>NOD2, <i>Ci</i>RIP2), while expression levels of the genes in the <i>Ci</i>CCKR pathway (<i>Ci</i>CCKR, <i>Ci</i>GNAS) are significantly up-regulated. In vitro and in vivo experiments indicated that knocking down <i>Ci</i>CCKR and treating with its inhibitor proglumide effectively regulated MDP-induced intestinal inflammation by activating the <i>Ci</i>PepT1/<i>Ci</i>NOD2 pathway. Overall, these findings suggested that <i>Ci</i>CCKR may play a critical role in the intestinal immune response to bacterial challenges.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70095","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237578","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":"A simple cross-species method for molecular sexing of softshell turtles (Trionychidae)","authors":"Hongbin Wang,&nbsp;Hongzhe Yang,&nbsp;Fang Li,&nbsp;Wei Sun,&nbsp;Yifan Wu,&nbsp;Chutian Ge,&nbsp;Zongji Wang","doi":"10.1111/jwas.70116","DOIUrl":"https://doi.org/10.1111/jwas.70116","url":null,"abstract":"<p>Accurate sex identification is essential for aquaculture, breeding management, and conservation, particularly in species lacking external sexual dimorphism during early development. Softshell turtles (family <i>Trionychidae</i>) are of high economic importance: their meat is prized in markets, their shells are used in traditional medicine, and large-scale farming supports rural economies. Male Chinese softshell turtles grow faster than females; therefore, developing reliable sex identification methods for these species is critical. Softshell turtles possess evolutionarily stable ZZ/ZW sex chromosomes, which provide a strong genomic foundation for molecular sexing. In this study, we developed a PCR-based method for molecular sexing across 5 <i>Trionychidae</i> species, targeting intronic sequence variation in the <i>Ran</i> gene. A single band (~250 bp) is amplified in ZZ males, while two distinct bands (~250 and ~600 bp) are produced in ZW females, due to size differences in the second intron. This diagnostic pattern enables clear and reliable sex identification. Using this method with a conserved primer pair, we successfully sexed individuals of the Chinese softshell turtle (<i>Pelodiscus sinensis</i>), Spiny softshell turtle (<i>Apalone spinifera)</i>, and Florida softshell turtle (<i>Apalone ferox)</i>. The assay is rapid and cost-effective and offers a cross-species approach for molecular sexing across softshell turtle lineages and a practical tool for aquaculture, selective breeding, and conservation genetics.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237497","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":"Infectious hematopoietic necrosis virus (IHNV) in fish and its consequences for fish farming: A comprehensive review","authors":"Zahra Tulaby Dezfuly,&nbsp;Amin Marandi,&nbsp;Marzieh Abbasi,&nbsp;Masoumeh Bashiri,&nbsp;Arash Ghalyanchilangeroudi,&nbsp;Zahra Ziafati Kafi,&nbsp;Mohammad Jalil Zorriehzahra,&nbsp;Leila Aghaiyan,&nbsp;Louise von Gersdorff Jørgensen,&nbsp;Hooman Rahmati-Holasoo","doi":"10.1111/jwas.70114","DOIUrl":"https://doi.org/10.1111/jwas.70114","url":null,"abstract":"<p>Viral diseases are a major concern in finfish aquaculture, leading to severe health problems. Infectious hematopoietic necrosis (IHN) is a highly transmissible systemic viral disease that primarily affects salmonids, causing significant mortality and economic losses to the salmonid farming industry. This review covers all major aspects of the virus, including its morphology and structure, replication cycle, geographical distribution, transmission, susceptibility and ultrastructural analysis. It also provides a comprehensive phylogenetic analysis of IHNV strains, specifically focusing on the G, N, M and NV genes, underscoring the importance of developing vaccines that are genetically aligned with circulating viral variants to improve immunization efficacy. In addition, this review addresses disease progression, prevalence, immunological responses, host range, clinical and histological appearance, diagnostic methods, control and management strategies, including current vaccine options. Molecular mechanisms of IHNV pathogenesis are discussed with particular emphasis on glycoprotein G as a key target for neutralizing antibodies and vaccine development. A detailed understanding of IHN and its prevention is essential for maintaining healthy aquaculture stocks, supporting sustainable production and meeting global demand for fish and fish-derived products.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70114","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148237478","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":"Effects of dietary 1,8-cineole supplementation on growth performance, antioxidant, and immunological responses of Nile tilapia, Oreochromis niloticus, reared in different stocking densities","authors":"Alireza Afzali-Kordmahalleh,&nbsp;Ali Taheri Mirghaed,&nbsp;Morteza Yousefi,&nbsp;Hosseinali Ebrahimzadeh Mousavi,&nbsp;Seyyed Morteza Hoseini","doi":"10.1111/jwas.70105","DOIUrl":"https://doi.org/10.1111/jwas.70105","url":null,"abstract":"<p>This study aimed to evaluate the effects of dietary 1,8-cineole (CIN) on Nile tilapia, <i>Oreochromis niloticus</i>, reared at different stocking densities. Fish (average initial weight 13.2 ± 0.35 g) were fed diets supplemented with 0%, 0.25%, or 0.5% CIN and stocked at either 14 (normal) or 56 (high) fish per 120-L tank. The fish were reared for 8 weeks in triplicate and fed the diets at a rate of 4% per day. The results showed no significant interaction effects between dietary CIN and stocking density for any of the parameters tested. Also, there were no significant differences between 0.25% and 0.5% CIN treatments in any tested parameters. Dietary CIN and stocking density had no significant effects on feed efficiency and fish growth rate, plasma cortisol, and glucose levels. Dietary CIN significantly increased the plasma total antioxidant capacity and hepatic superoxide dismutase activity, but decreased hepatic malondialdehyde levels. The increase in fish stocking density significantly increased the plasma total antioxidant capacity and hepatic malondialdehyde levels. Dietary CIN and stocking density had no significant effect on the hepatic catalase activity. Dietary CIN significantly increased skin mucus alkaline phosphatase and plasma alternative complement activities, but fish stocking density had no significant effect on these parameters. Dietary CIN significantly increased lysozyme activities and immunoglobulin levels in plasma, skin mucus, liver, and kidney. The increase in fish stocking density significantly decreased lysozyme activities in plasma, skin mucus, and liver, but increased the kidney lysozyme activity. Moreover, the increase in fish stocking density significantly increased immunoglobulin levels in the liver and skin mucus, but decreased them in the plasma. In conclusion, this study demonstrates that an increase in stocking density up to 56 fish per 120-L tank had no detrimental effect on feed efficiency and growth performance of Nile tilapia. Also, dietary CIN does not affect Nile tilapia growth but boosts antioxidant and immune systems, which may improve fish welfare and resilience. Hence, dietary 0.25% CIN supplementation is recommended for Nile tilapia feed formulation.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70105","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174182","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":"Impact of diet, dissolved oxygen concentration, and stocking density on channel catfish (Ictalurus punctatus) production performance","authors":"Brian D. Ott,&nbsp;Dakoda O. Chisolm,&nbsp;Bradley M. Richardson,&nbsp;Fernando Y. Yamamoto,&nbsp;Penelope Goodman,&nbsp;J. Grant Reifers,&nbsp;Brian G. Bosworth","doi":"10.1111/jwas.70111","DOIUrl":"https://doi.org/10.1111/jwas.70111","url":null,"abstract":"<p>Diet selection, stocking density, and target levels for dissolved oxygen concentration are three of the major management decisions made by aquaculture producers. These factors and their combinations were tested in channel catfish (<i>Ictalurus punctatus</i>) to determine their relative impact on food conversion ratio (FCR), growth performance, and proximate analyses after 8, 16, and 22 weeks of feeding to satiation in indoor tanks at 26.7°C and processing traits after 22 weeks. At the end of the study, catfish grew from 29 to 732 g with an FCR of 1.1 in the best performing treatment combination (high protein, high dissolved oxygen concentration, low density) and from 29 to 414 g with an FCR of 1.2 in the worst performing treatment combination (low protein, low dissolved oxygen concentration, low density). After each sample period, the high protein diet significantly decreased FCR and growth, stocking density had no impact on any recorded variable, and low dissolved oxygen concentration reduced appetite but also decreased FCR. As fish grew, FCR increased and feed consumption as a proportion of body mass decreased. All factors tested had little impact on proximate analyses, but the high protein diet consistently had worse protein conversion efficiency (PCE). Higher feed protein decreased both headed-gutted and fillet yield, but no other factor had an effect. In channel catfish, higher feed protein improves growth, FCR, and meat yield; higher dissolved oxygen concentration increases appetite; and stocking density has no impact on performance if oxygen is maintained at saturation.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70111","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167161","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":"Reproductive biology, artificial reproduction, and breeding strategies of the red swamp crayfish (Procambarus clarkii): A review","authors":"KeLei Zhang,&nbsp;Jiayun Wu,&nbsp;Zhaojun Wu,&nbsp;Guobin Zhou,&nbsp;Jiaye Guo,&nbsp;Lan Li,&nbsp;Shiyong Yang,&nbsp;Zhengyin Wang","doi":"10.1111/jwas.70112","DOIUrl":"https://doi.org/10.1111/jwas.70112","url":null,"abstract":"<p>The red swamp crayfish (<i>Procambarus clarkii</i>) is widely cultured and consumed due to its palatable meat and high nutritional value. It also becomes the most valuable crustacean species because of its amazing yield and economic value in China. However, <i>P. clarkii</i> has unique reproductive habits, such as multiple mating events, low fecundity, asynchronous sexual maturity, and egg-carrying hatching, which pose huge challenges to its seed breeding and genetic improvement. Additionally, the large-scale breeding technology of <i>P. clarkii</i> has not achieved a substantial breakthrough. The scarcity of high-quality seedlings and the problem of periodic juvenile supply hinder the further development of the <i>P. clarkii</i> aquaculture industry. This research adopted a systematic literature review approach, combining thematic analysis with quantitative synthesis of data from published articles (1972–2025), and contacting with production practice, we briefly describe the research advances including the reproduction biology and artificial breeding techniques in <i>P. clarkii</i>, and analyze some main factors which influence the reproduction and production of <i>P. clarkii</i>, including shelters, light, water temperature, salinity, and drought stress. Our analysis reveals that the key to the artificial breeding techniques in <i>P. clarkii</i> lies in effectively promoting synchronized spawning and producing <i>P. clarkii</i> juveniles in a large-scale way. To achieve the breeding of high-quality seedlings, the breeding of fine varieties of <i>P. clarkii</i> will be put on the crucial agenda in the future. Similar to other aquatic animals, with the assistance of various molecular biology techniques, the breeding will be more precise and efficient.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70112","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148166983","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":"Effects of farming practices on the performance of fish pond polyculture assessed by trophic modeling","authors":"Purco Ralaiarison Ralien,&nbsp;Angela Larivain,&nbsp;Marc Roucaute,&nbsp;Michael S. Corson,&nbsp;Alexandrine Pannard,&nbsp;Joël Robin,&nbsp;Léo Girard,&nbsp;Mathieu Guérin,&nbsp;Marielle Thomas,&nbsp;Thomas Lecocq,&nbsp;Julie Coudreuse,&nbsp;Sarah Nahon,&nbsp;Kazi Ahmed Kabir,&nbsp;Joël Aubin","doi":"10.1111/jwas.70115","DOIUrl":"https://doi.org/10.1111/jwas.70115","url":null,"abstract":"<p>This study aimed to identify species compositions that use resources more efficiently and recommend management practices for extensive and semi-intensive pond polyculture by modeling food webs and calculating performance indicators. We monitored 8 polyculture fish ponds managed by fish farmers that had contrasting fish species compositions in two regions of France and analyzed their biomass flows using the Ecopath model. The ponds that had been stocked with at least 5 species × size classes had the highest net fish yield and nutrient recycling (Finn cycling index [FCI]), which highlighted the importance of diversity and complementarity for increasing resource use, nutrient recycling, and productivity. Carnivorous fish appeared to contribute significantly to net fish yield and nutrient recycling. Ponds stocked with grass carp had significantly higher mean net fish yield, likely because the grass carp occupied an otherwise vacant trophic position. Ecotrophic efficiency (EE) was high for benthic macroinvertebrates (0.90–0.99) and zooplankton (0.55–0.99), which indicated that they can limit pond productivity, but low for phytoplankton and detritus (0.06–0.29 and 0.04–0.17, respectively), which indicated that they were underconsumed. FCI was not significantly correlated with net fish yield but was significantly correlated with the EE of phytoplankton (<i>r</i> = 0.90) and detritus (<i>r</i> = 0.91), which highlighted the importance of these functional groups to nutrient recycling. This study provides insights into biomass flows among species during a production cycle, which could be improved by modeling temporal dynamics of the system. It indicates that nutrient recycling and productivity in fish ponds can be increased by defining the percentages of species more precisely.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70115","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148166946","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":"Integrating curimba culture during the grow-out phase of tambaqui affects overall productivity, water quality, and fish health","authors":"Adriana Ferreira Lima,&nbsp;André Silvério Pereira,&nbsp;Luciana Nakaghi Ganeco-Kirschnik,&nbsp;Patricia Oliveira Maciel-Honda,&nbsp;Wagner C. Valenti","doi":"10.1111/jwas.70104","DOIUrl":"https://doi.org/10.1111/jwas.70104","url":null,"abstract":"<p>The efficiency of feed use in aquaculture may be improved by integrating the culture of extractive species into fed-species systems. This study assessed the impact of including curimba (<i>Prochilodus lineatus</i>) in tambaqui (<i>Colossoma macropomum</i>) production during the grow-out phase in earthen ponds. A completely randomized experiment with two treatments (production systems) and three replications of each was conducted over 7 months. Tambaqui monoculture and tambaqui with curimba-integrated culture were compared. The addition of curimba did not affect tambaqui performance, which reached a final weight of ~1.7 kg, survival rate of ~60%, and feed conversion ratio of ~1.73 in both systems; annual productivity reached about 7.1 t ha⁻¹. Curimba grew to ~144 g, with a survival rate of 97% and annual production of ~1.0 t ha⁻¹. Data indicated that total fish production (tambaqui + curimba) may be higher (~25%) in the integrated culture system. The presence of curimba was associated with lower morning dissolved oxygen and afternoon pH, and higher levels of chlorophyll <i>a</i>, turbidity, and total dissolved and suspended solids in the water. Phytoplankton, zooplankton, and monogenean parasites in tambaqui tended to be higher in the integrated culture system, possibly related to the resuspension of nutrients induced by bioturbation caused by the curimba. Implementing the integrated culture increased net profit by approximately US$ 1.5 thousand per hectare per year. Curimba appears to be compatible with and complementary to tambaqui, making them suitable for co-culture. Therefore, tambaqui can be effectively farmed in an integrated culture with curimba (and possibly other benthic species), enhancing aquaculture production efficiency and aligning with the principles of the circular economy.</p>","PeriodicalId":17284,"journal":{"name":"Journal of The World Aquaculture Society","volume":"57 3","pages":""},"PeriodicalIF":3.2,"publicationDate":"2026-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jwas.70104","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148092905","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}