Aquaculture Research最新文献

{"title":"Effects of Photoperiod on Growth, Reproduction, and Physiology of Nile Tilapia (Oreochromis niloticus)","authors":"Mobin Hossain Shohan,&nbsp;Md. Naim Mahmud,&nbsp;Mohammad Mahfujul Haque,&nbsp;Neaz A. Hasan","doi":"10.1155/are/2731777","DOIUrl":"https://doi.org/10.1155/are/2731777","url":null,"abstract":"<p>The photobiological responses of fish are strongly influenced by the surrounding photoperiod conditions. This study aimed to evaluate the effects of photoperiod on the growth performance, gonadal development, major haematological parameters, skin coloration, and proximate composition of Nile tilapia (<i>Oreochromis niloticus</i>). Four photoperiod treatments were employed: 2 h of light and 22 h of dark (02L:22D), 12 h of light and 12 h of dark (12L:12D), 17 h of light and 7 h of dark (17L:07D), and 22 h of light and 2 h of dark (22L:02D), denoted as Treatment one (T1), Treatment two (T2), Treatment three (T3), and Treatment four (T4), respectively. Fingerlings (3.21 ± 0.51 g) were reared for 90 days and provided a commercial diet (35% crude protein) twice daily at 5% of their body weight. The light intensity was maintained at 1350 lux throughout the study period. Compared with those under the other treatments, significantly greater weight gain (WG) (47.09 ± 13.89), percentage WG (%WG)(1465.05 ± 394.29), and specific growth rate (SGR) (3.05 ± 0.25), along with a lower feed conversion ratio (FCR) (1.79 ± 0.44), were observed under the 17L:07D photoperiod. The gonadosomatic index (GSI) was highest in T4 for both males (1.11% ± 0.41%) and females (7.18% ± 1.10%). Skin brightness was also greater in T4 (<i>L</i>^∗ = 85.63 ± 0.31) than in T1 (<i>L</i>^∗ = 71.02 ± 0.51). Red blood cell (RBC) counts were significantly higher in T3 (1.56 ± 0.06 × 10⁶/µL), whereas white blood cell (WBC) counts were highest in T4 (31.72 ± 0.16 × 10³/µL). Hemoglobin (Hb), hematocrit (Hct), mean corpuscular volume (MCV), mean corpuscular Hb (MCH), MCH concentration (MCHC), and monocyte levels showed no significant differences among treatments. Proximate composition showed the highest protein content in T3 (14.47 ± 0.19) and the greatest lipid content in T4 (1.82 ± 0.06). Overall, 17L:07D (T3) optimizes growth and protein deposition, whereas 22L:02D (T4) enhances reproduction, lipid accumulation, and skin pigmentation in Nile tilapia.</p>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/2731777","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174088","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":"Exploring the Impact of Climate Change on the Small-Scale Aquaculture Industry of Ghana: A Farm-Level Analysis","authors":"Berchie Asiedu,&nbsp;Pierre Failler,&nbsp;Seidu Iddrisu","doi":"10.1155/are/1759707","DOIUrl":"https://doi.org/10.1155/are/1759707","url":null,"abstract":"<p>Aquaculture is adopted as a remedy to increase the food fish supply, nutrition, and improve the lives of rural people in Ghana. Most actors operate at the small-scale level and live in rural communities with limited social services and livelihood support. Climate change continues to battle the small-scale aquaculture industry of Ghana, even though the issue has not been considered a priority by the relevant stakeholders. This paper presents an analysis of small-scale aquaculture in the context of climate change using farm-level data on climate and non-climate change variables. We employed multiple sampling techniques to interview 40 fish farmers in the two important small-scale aquaculture farm regions (Ashanti and Bono-Ahafo) in Ghana. Our findings showed that small-scale aquaculture is very viable, yielding 2.81 kg m⁻² of fish and generating a revenue of GH¢ 22.79 m⁻² at a production cost of GH¢ 10.8. Yields of farmers are declining at a rate of 0.33 per production cycle. Climate disasters will increase farmers’ production costs by up to 75%. Floods are the most frequent and the most catastrophic climate disaster, with the potential to increase production costs by up to 43%. Without effective mitigation and adaptation strategies, small-scale fish farmers will be severely impacted by climate change. There may be an upward shift in market prices, thereby affecting the purchasing power and well-being of rural people who depend on farmed fish for food. We recommend the Fisheries Commission, Ghana National Association of Fish Pond Farmers, Ghana National Aquaculture Association and other relevant stakeholders continue climate change education among small-scale aquaculture operators. We also urge the government to increase the support for small-scale aquaculture development.</p>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/1759707","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167137","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":"Combined Efficacy of Curcuma longa and Spirulina platensis Enhancing Growth, Immunity, Coloration, and Resilience to Ammonia Stress in Balloon Molly, Poecilia sphenops","authors":"Attia A. Abou Zaid,&nbsp;Ahmed E. Elshafey,&nbsp;Bin Wen,&nbsp;Gaber El-Saber Batiha,&nbsp;Eman T. Al-Sokary,&nbsp;Mona E. Abass,&nbsp;Ghada El-Khader,&nbsp;Nagwa H. Mohammed,&nbsp;Sabah H. El-Ghaiesh,&nbsp;Mohamed M. Abdel Rahim,&nbsp;Afnan H. Saaty,&nbsp;Fatimah M. Yousef,&nbsp;Rema Abdulhameed Turkustani,&nbsp;Mohamed H. Mahmoud,&nbsp;Jian-Zhong Gao,&nbsp;Zai-Zhong Chen","doi":"10.1155/are/3743812","DOIUrl":"https://doi.org/10.1155/are/3743812","url":null,"abstract":"<p>Turmeric (TUR), <i>Curcuma longa</i>, is rich in bioactive substances, and spirulina (SPR), <i>Spirulina platensis</i>, is a source of protein that is highly digestible. This research investigated the combined effects of dietary <i>C</i>. <i>longa</i> and <i>Spirulina platensis</i> on the growth, nutritional composition, coloration, immunity, and gill health of balloon molly fish, <i>Poecilia sphenops</i>, (initial weight = 0.977 ± 0.003 g) when exposed to acute ammonia stress. <i>Poecilia sphenops</i> (20 fish per aquarium) was distributed into four treatments, each with three replicate aquariums, according to the diets: a basal control diet, a diet supplemented with 0.1% TUR, a diet supplemented with 0.1% SPR, and a diet containing TUR + spirulina 0.1% combined (TUR + SPR). After a 90-day feeding trial, TUR + SPR showed significantly higher growth indicators (average daily gain [ADG] and specific growth rate [SGR]), improved feed efficiency (feed conversion ratio [FCR], protein efficiency ratio [PER], and protein productive value [PPV]), enhanced immunity (immunoglobulin M [IgM], lysozyme activity, and phagocytic activity [PA]), and more vibrant coloration compared to other treatments. The SPR showed improved growth and coloration parameters, also greatest increases in head and caudal peduncle dimensions, while TUR + SPR produced the largest overall increases in body width and length (<i>p</i> &lt; 0.05). Histological analysis of the gills after exposure to acute ammonia stress at the end of the study showed moderately abnormal tissue in TUR, mildly altered tissue in SPR, and normally differentiated tissue in TUR + SPR. Although both TUR and SPR have been individually investigated as feed additives in various fish species, their combined effects, particularly in ornamental fish, remain largely unexplored. The specific knowledge gap addressed by the present study is whether the combination of TUR and SPR at a low inclusion level (0.1% total additives) can simultaneously enhance growth, feed utilization, skin pigmentation, immune parameters, and gill resilience to acute ammonia stress in balloon mollies.</p>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/3743812","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148167157","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":"Study on Phototaxis and Food-Inducing Effects in Procambarus clarkii","authors":"Yujia Huo,&nbsp;Yueyue Fei,&nbsp;Chongyu Zhong,&nbsp;Yansong Zhang,&nbsp;Yijin Zhu,&nbsp;Yuyan Sun,&nbsp;Chao Guo,&nbsp;Min Wei,&nbsp;Jianbo Zheng","doi":"10.1155/are/4634311","DOIUrl":"https://doi.org/10.1155/are/4634311","url":null,"abstract":"<p>As a globally significant freshwater aquaculture species, <i>Procambarus clarkii</i> has attracted considerable attention due to its economic value. Understanding its behavioral characteristics is crucial for improving aquaculture practices. This study systematically investigated the effects of different light conditions and feeding attractants on <i>P. clarkii</i> behavior. Results demonstrated that phototactic responses were highly dependent on light wavelength and intensity. Under blue light (10 lx, 50 min exposure), the highest phototaxis rate (36.7%) was observed, whereas red light (5–40 lx) exhibited a significant repelling effect (phototaxis index: −0.419 to −0.270). Among tested feeding attractants, 1.5% allicin showed the strongest attraction efficiency (<i>F</i> = 0.42), significantly outperforming other compounds. Based on these findings, we developed an integrated trapping protocol: “10 lx blue light + 50 min exposure + 1.5% allicin,” which offers a cost-effective, environmentally friendly, and operationally simple solution for <i>P. clarkii</i> management. This study not only advances fundamental knowledge of crustacean behavioral ecology but also provides a practical and scalable approach for enhancing aquaculture efficiency.</p>","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1155/are/4634311","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148174696","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":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148092788","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148092736","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148087969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148087968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148086367","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"","authors":"","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":8104,"journal":{"name":"Aquaculture Research","volume":"2026 1","pages":""},"PeriodicalIF":1.9,"publicationDate":"2026-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148083631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}