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Cadmium-induced disruption of monoaminergic signaling and motor behavior in developing zebrafish 镉诱导的发育中的斑马鱼单胺能信号和运动行为的破坏
Q1 Agricultural and Biological Sciences Pub Date : 2026-03-01 Epub Date: 2025-08-23 DOI: 10.1016/j.aaf.2025.08.007
Sugiyono , Zulvikar Syambani Ulhaq , Mitsuyo Kishida
Cadmium (Cd) is a widespread environmental pollutant known for its neurotoxic and endocrine-disrupting effects, yet its impact on early vertebrate development remains incompletely understood. This study investigated the toxicity and molecular mechanisms of Cd exposure in zebrafish embryos, a widely used model for developmental and neurotoxicological research. Zebrafish embryos were exposed to different concentrations of CdCl2 from 2 to 144 h post-fertilization (hpf) to evaluate morphological changes, gene expression alterations, and behavioral effects. Exposure to concentrations ≥1 μM resulted in morphological abnormalities, including altered head shape and malformations of the swim bladder and ear, along with increased mortality, while larval growth and hatching rates were unaffected. Gene expression analyses revealed that Cd exposure dysregulated key enzymes and transporters in the dopaminergic (DA) and serotonergic (5-HT) systems, with significant upregulation of th2 and tph2 and dose-dependent manner. Correspondingly, locomotor behavior was impaired, with reduced tactile response rescued by DA and 5-HT agonists, and increased spontaneous swimming reversed by both DA and 5-HT receptor antagonists. Moreover, Cd acted as an endocrine disruptor by upregulating brain aromatase (cyp19a1b) and estrogen receptor (ER) 1 (esr1), with evidence suggesting that part of its neurobehavioral toxicity is mediated through ER signaling. Altogether, our results suggest that Cd exposure disrupts neurochemical pathways and endocrine signaling during early development, leading to altered morphology and behavior in zebrafish embryos and larvae.
镉(Cd)是一种广泛存在的环境污染物,以其神经毒性和内分泌干扰作用而闻名,但其对早期脊椎动物发育的影响仍不完全清楚。本研究探讨了镉暴露对斑马鱼胚胎的毒性和分子机制,这是一种广泛应用于发育和神经毒理学研究的模型。将斑马鱼胚胎在受精后2 ~ 144小时暴露于不同浓度的CdCl2中,以评估形态变化、基因表达改变和行为影响。暴露在浓度≥1 μM的环境中会导致形态异常,包括头部形状改变、鱼鳔和耳部畸形,以及死亡率增加,但幼虫生长和孵化率未受影响。基因表达分析显示,Cd暴露导致大鼠多巴胺能(DA)和血清素能(5-HT)系统关键酶和转运体异常,th2和tph2显著上调,且呈剂量依赖性。相应的,运动行为受损,DA和5-HT受体拮抗剂恢复的触觉反应减少,DA和5-HT受体拮抗剂逆转的自发游泳增加。此外,Cd通过上调脑芳香化酶(cyp19a1b)和雌激素受体(ER) 1 (esr1)发挥内分泌干扰物的作用,有证据表明其部分神经行为毒性是通过ER信号传导介导的。总之,我们的研究结果表明,Cd暴露会破坏斑马鱼早期发育过程中的神经化学途径和内分泌信号,导致斑马鱼胚胎和幼虫形态和行为的改变。
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引用次数: 0
Potential of SERINC2 as a biomarker in tumor prognosis and immunology: analysis from pan-cancer studies. SERINC2作为肿瘤预后和免疫学生物标志物的潜力:来自泛癌症研究的分析。
Q3 Medicine Pub Date : 2026-03-01 DOI: 10.16288/j.yczz.25-090
Min Zhao, Hui-Qi Ying, Yi-Lei Yang, Qing-Lv Chen, Wen Lin, Zhen-Zhai Cai, Li-Miao Lin, Yang-Yang Teng

Serine incorporator (SERINC) is a family of transmembrane protein involved in lipid synthesis. Among its family members, SERINC2 has been implicated in tumor pathogenesis. Pancreatic carcinoma (PAAD), a highly malignant tumor characterized by an extremely poor prognosis, lacks effective biomarkers. To date, the association between SERINC2 and pan-cancer or tumor immunity remains unreported in the literature. Consequently, investigating the utility of SERINC2 for prognostic prediction in PAAD lays the groundwork for developing diagnostic biomarkers and SERINC2-targeted immunotherapy strategies. In this study, we used the transcriptional data in normal and tumor tissues from The Cancer Genome Atlas (TCGA), Genotype-Tissue Expression (GTEx) and Human Protein Atlas (HPA). Analysis of publicly available data (TCGA, GTEx, HPA) revealed significant SERINC2 overexpression in multiple cancers, which was associated with advanced clinicopathological stage (P<0.05). Analysis of the Genomic Stability Associated Cancer Analysis (GSCA) database revealed a significant positive correlation between copy number variation (CNV) and SERINC2 expression levels. Conversely, DNA methylation was inversely correlated with SERINC2 expression (P<0.05). Further investigation utilizing TCGA database demonstrated that SERINC2 expression was significantly associated with the expression of immune checkpoint molecules, response to immunotherapy, and the extent of immune cell infiltration. Notably, a negative correlation was observed between SERINC2 expression and the tumor microenvironment (TME) score in most cancer types analyzed (P<0.05). We constructed a prognostic model for PAAD based on 25 differentially expressed genes (DEGs) identified from the TCGA cohort using the "limma" package. This model effectively stratified patients into high- and low-risk groups with significantly distinct survival outcomes. Immunohistochemical (IHC) analysis of 54 PAAD patient samples validated that high SERINC2 expression was significantly associated with poorer prognosis; patients with high expression had a significantly shorter median overall survival (19.67 vs 50.52 months, P=0.029). Collectively, our findings provide a rationale for developing SERINC2-based diagnostic biomarkers and immunotherapeutic strategies.

丝氨酸结合子(SERINC)是一个参与脂质合成的跨膜蛋白家族。在其家族成员中,SERINC2与肿瘤发病有关。胰腺癌(PAAD)是一种预后极差的高度恶性肿瘤,缺乏有效的生物标志物。迄今为止,SERINC2与泛癌或肿瘤免疫之间的关系仍未在文献中报道。因此,研究SERINC2在PAAD预后预测中的应用为开发诊断性生物标志物和SERINC2靶向免疫治疗策略奠定了基础。在本研究中,我们使用了来自Cancer Genome Atlas (TCGA)、Genotype-Tissue Expression (GTEx)和Human Protein Atlas (HPA)的正常组织和肿瘤组织的转录数据。对公开数据(TCGA, GTEx, HPA)的分析显示,SERINC2在多种癌症中显著过表达,这与临床病理分期(PSERINC2表达水平)有关。相反,DNA甲基化与SERINC2表达呈负相关(PSERINC2表达与免疫检查点分子的表达、免疫治疗反应和免疫细胞浸润程度显著相关)。值得注意的是,在分析的大多数癌症类型中,SERINC2表达与肿瘤微环境(TME)评分呈负相关(PSERINC2表达与较差的预后显著相关;高表达患者的中位总生存期明显较短(19.67个月vs 50.52个月,P=0.029)。总之,我们的发现为开发基于serinc2的诊断生物标志物和免疫治疗策略提供了理论依据。
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引用次数: 0
Identification of biomarkers for non-obstructive azoospermia based on microRNA and bioinformatics screening. 基于microRNA和生物信息学筛选的非阻塞性无精子症生物标志物鉴定。
Q3 Medicine Pub Date : 2026-03-01 DOI: 10.16288/j.yczz.25-089
Zhi-Hong Li, Miao-Qi Chen, Xiao-Jun Yuan, Hua-Jun Huang, Wan-Ting Huang, Piao-Yan Zhou, Chen Zeng, Xunuo Feng, Luo-Yao Yang, Shu-Qiang Huang, Cui-Yu Tan, Cai-Rong Chen, Qiu-Xia Yan

MicroRNAs (miRNAs) play an important role in the occurrence of non-obstructive azoospermia (NOA). Nevertheless, there is still a lack of research on the molecular mechanisms by which miRNAs regulate target genes to mediate NOA at present. In this study, we obtained NOA-related miRNA datasets from the GEO database and applied differential expression matrices combined with weighted correlation network analysis (WGCNA) and LASSO regression to identify four key miRNAs. Based on the miRDB database, the target genes of these miRNAs were predicted and intersected with the differentially expressed genes (DEGs) in the NOA transcriptome datasets. This intersection resulted in the identification of 18 DEGs. The spermatogenesis score model revealed a significant positive correlation between the overall expression level of these 18 DEGs and spermatogenesis scores, suggesting their potential involvement in NOA development. These 18 DEGs were subsequently incorporated into machine learning, leading to the identification of four hub genes with high diagnostic value: MGARP, FER1L5, SNX2, and PAPOLB. In the NOA mouse model, MGARP and SNX2 were upregulated, whereas FER1L5 and PAPOLB were downregulated, consistent with the expression trends observed in the NOA datasets. These findings indicate that MGARP, FER1L5, SNX2, and PAPOLB may serve as novel biomarkers for NOA, providing a theoretical and experimental foundations for elucidating its mechanisms and improving clinical diagnosis.

MicroRNAs (miRNAs)在非阻塞性无精子症(NOA)的发生中起重要作用。然而,目前对于mirna调控靶基因介导NOA的分子机制研究尚缺乏。在这项研究中,我们从GEO数据库中获得noaa相关的miRNA数据集,并应用差分表达矩阵结合加权相关网络分析(WGCNA)和LASSO回归来鉴定四个关键miRNA。基于miRDB数据库,预测这些mirna的靶基因,并与NOA转录组数据集中的差异表达基因(DEGs)相交。这个交集导致了18度的鉴定。精子发生评分模型显示,这18个DEGs的总表达水平与精子发生评分之间存在显著正相关,提示它们可能参与NOA的发育。这18个deg随后被纳入机器学习,从而鉴定出四个具有高诊断价值的中心基因:MGARP、FER1L5、SNX2和PAPOLB。在NOA小鼠模型中,MGARP和SNX2上调,而FER1L5和PAPOLB下调,与NOA数据集中观察到的表达趋势一致。这些发现提示MGARP、FER1L5、SNX2和PAPOLB可能作为新的NOA生物标志物,为阐明其发病机制和提高临床诊断水平提供理论和实验基础。
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引用次数: 0
Large-scale wheat lodging monitoring by band transformation of UAV and sentinel-2A multispectral imagery 基于无人机和sentinel-2A多光谱影像波段变换的大规模小麦倒伏监测
IF 7.4 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-03-01 Epub Date: 2025-08-12 DOI: 10.1016/j.inpa.2025.07.006
Baoyuan Zhang , Meiyan Shu , Xiaoyuan Bao , Menglei Dai , Qian Sun , Xuguang Sun , Mingzheng Zhang , Ying Ren , Zongpeng Li , Ya’nan Tian , Xia Yao , Xiaohe Gu
Lodging negatively affects wheat yield and quality. Large-scale remote sensing monitoring of wheat lodging is significant for rapidly assessing the impacts of agricultural disasters and formulating precise management strategies. Large-scale remote sensing of wheat lodging requires sufficient in-situ samples, which are faced with the challenges of high cost, low efficiency, and poor real-time performance. This study proposes a method integrating unmanned aerial vehicle (UAV) and satellite (Sentinel-2A) multispectral imagery to achieve low-cost and efficient wheat lodging monitoring. By applying a multilayer perceptron (MLP) algorithm for band transformation, a wheat lodging ratio (WLR) estimation model was constructed based on high-precision UAV data and migrated to satellite data. This model was used to map the distribution of wheat lodging in Henan Province, China. The MLP algorithm achieved high accuracy and stability in band transformation between UAV and Sentinel-2A imagery, with R2 values > 0.97 and RMSE values < 0.015. The SPA_XGBoost model delivered the optimal performance in UAV-based WLR monitoring, with a testing set R2 of 0.8675, RMSE of 0.0732, and NRMSE of 12.13 %. When applied to satellite imagery for WLR monitoring, the model yielded validation accuracies of R2 = 0.8458, RMSE = 0.0985, and NRMSE = 11.24 %. In addition, UAV imagery was used to generate high-accuracy reference data, thereby laying a robust foundation for model construction and transfer. This study significantly reduced the time and economic costs of acquiring ground-truth samples and offered an effective solution for large-scale remote sensing of crop lodging that balances accuracy and scale.
倒伏对小麦产量和品质有不利影响。小麦倒伏的大规模遥感监测对于快速评估农业灾害影响和制定精准管理策略具有重要意义。小麦倒伏大尺度遥感需要充足的原位样本,面临成本高、效率低、实时性差的挑战。本研究提出了一种将无人机(UAV)与卫星(Sentinel-2A)多光谱图像相结合的方法,实现低成本、高效的小麦倒伏监测。采用多层感知器(MLP)算法进行波段变换,建立了基于高精度无人机数据的小麦倒伏比估计模型,并将其迁移到卫星数据中。利用该模型绘制了河南省小麦倒伏分布图。MLP算法在无人机与Sentinel-2A影像的波段转换中具有较高的精度和稳定性,R2值为>; 0.97, RMSE值为<; 0.015。SPA_XGBoost模型在基于无人机的WLR监测中表现最佳,测试集R2为0.8675,RMSE为0.0732,NRMSE为12.13%。将该模型应用于WLR监测卫星图像时,验证精度为R2 = 0.8458, RMSE = 0.0985, NRMSE = 11.24%。此外,利用无人机影像生成高精度参考数据,为模型构建和转移奠定了坚实的基础。本研究显著降低了获取地真样本的时间和经济成本,为作物倒伏大尺度遥感提供了平衡精度和尺度的有效解决方案。
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引用次数: 0
An insight into productivity, profitability, and sustainable energy use in maize under precision nitrogen management using a smartphone app 利用智能手机应用程序深入了解精准氮肥管理下玉米的生产力、盈利能力和可持续能源利用
IF 7.4 Q1 AGRICULTURE, MULTIDISCIPLINARY Pub Date : 2026-03-01 Epub Date: 2025-08-05 DOI: 10.1016/j.inpa.2025.07.007
Sayantika Sarkar , Pravin Kumar Upadhyay , Abir Dey , Utpal Ekka , Kapila Shekhawat , Sanjay Singh Rathore , Rajiv Kumar Singh , G.A. Rajanna , Subhash Babu , Anchal Dass , Rakesh Kumar , Rabi Narayan Sahoo , Tarik Mitran , Kancheti Mrunalini , Nikita Singh , Vijay Pooniya , Mohammad Hasanain , Navin Kumar Sharma , Md. Yeasin , Vinod Kumar Singh
During previous implementation of dark green colour index (DGCI), conventional tools were found inadequate for providing accurate nitrogen (N) recommendations in maize. In contrast, camera-based DGCI methods demonstrated greater effectiveness in predicting the in-season N requirements. To address this incongruity, maize leaf images were captured; resized; white balance corrected; followed by selection of region of interest; normalization; red, green, blue channel extraction; conversion into hue, saturation, brightness spectrum and calculation of DGCI. Simultaneously, NDVI, SPAD, LCC and leaf N% data were collected; and correlated with DGCI; followed by performance analysis; DGCI-based N prescription algorithm development; and its incorporation in “Pusa N Doctor” app developed using Android studio with JNI and Android NDK. The app validation was carried out using basal N dose of 0 kg ha−1 (N0PK), 50 kg ha−1 (N50PK), & 75 kg ha−1 (N75PK) including 2 split applications of N at 35 & 45 days after sowing (DAS) as per Pusa N Doctor & GreenSeeker™ recommendation. The treatments directed by the mobile application (app-guided) (N50PK + App and N75PK + App) were evaluated with reference to standard RDF as well as those managed using GreenSeeker™ (N50PK + GSTM and N75PK + GSTM). The N50PK + App showed at par yield attributes, stover yield (9.34 t ha−1), total biomass yield (17.17 t ha−1), grain protein yield (646.17 kg ha−1), total N uptake (145.96  kg ha−1) and remobilized vegetative N (89.8 kg ha−1) into grain with the RDF. Partial factor productivity (PFPN) and apparent recovery efficiency (AREN) of N in N50PK + App was 23% and 22.1% higher than RDF respectively. The B:C in N50PK + App (2.43) was at par with N75PK + App (2.44). N50PK + App had the lowest energy consumption (9.72% lower than RDF), highest N energy use efficiency (24.3% higher than RDF) along with the maximum energy profitability, productivity and use efficiency. N50PK + App treatment resulted in marked reductions in GHG emission compared to RDF, with 11.1% lower CO2-eq. emission ha−1, 29.4% lower N2O emission ha−1, and 11.14% lower CO2-eq. emission t−1. Thus, basal application of 50 kg ha−1 N with two splits of N (35 & 45 DAS) as per Pusa N Doctor can provide at par yield with RDF and GSTM, while simultaneously promoting N and energy use efficiency thereby, minimising GHG emission.
在以前实施深绿色指数(DGCI)期间,发现传统工具不足以提供准确的玉米氮素(N)建议。相比之下,基于相机的DGCI方法在预测当季氮需求方面表现出更大的有效性。为了解决这种不一致,玉米叶片图像被捕获;调整大小;白平衡校正;然后选择感兴趣的区域;归一化;红、绿、蓝通道提取;转换成色相、饱和度、亮度光谱并计算DGCI。同时采集NDVI、SPAD、LCC和叶片N%数据;与DGCI相关;其次是绩效分析;基于dgci的N处方算法开发并将其纳入使用JNI和Android NDK的Android studio开发的“Pusa N Doctor”应用程序。应用程序验证采用0 kg ha - 1 (N0PK)、50 kg ha - 1 (N50PK)和75 kg ha - 1 (N75PK)的基础氮剂量进行,包括根据Pusa N Doctor GreenSeeker™推荐在播种后35和45天(DAS)分两次施氮。参照标准RDF和GreenSeeker™(N50PK + GSTM和N75PK + GSTM)对移动应用程序(应用程序引导)指导的处理(N50PK + App和N75PK + App)进行评估。N50PK + App表现出同等产量特征,秸秆产量(9.34 t ha−1)、总生物量产量(17.17 t ha−1)、籽粒蛋白质产量(646.17 kg ha−1)、总氮素吸收量(145.96 kg ha−1)和再营养氮(89.8 kg ha−1)随RDF进入籽粒。N50PK + App对氮的部分要素生产率和表观回收率分别比RDF提高23%和22.1%。N50PK + App的B:C为2.43,与N75PK + App的B:C为2.44。N50PK + App的能量消耗最低(比RDF低9.72%),氮能量利用效率最高(比RDF高24.3%),能量盈利能力、生产力和利用效率最高。与RDF相比,N50PK + App处理显著减少了温室气体排放,二氧化碳当量降低了11.1%。排放量ha−1,N2O排放量ha−1降低29.4%,co2排放量降低11.14%。发射t−1。因此,根据Pusa N Doctor,基础施用50 kg ha - 1 N,分两次施氮(35 & 45 DAS),可以提供与RDF和GSTM相当的产量,同时提高氮和能源利用效率,从而最大限度地减少温室气体排放。
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引用次数: 0
Fishery products consumption: Evidence of persistence and trends in 25 OECD countries 渔业产品消费:25个经合发组织国家的持续性和趋势的证据
Q1 Agricultural and Biological Sciences Pub Date : 2026-03-01 Epub Date: 2025-08-07 DOI: 10.1016/j.aaf.2025.07.003
Sakiru Adebola Solarin , Carmen Lafuente , Luis Alberiko Gil-Alana , María Jesús González-Blanch
Given the nutritional relevance and health benefits of fishery products consumption, this article examines the statistical properties of fishery products consumption in 25 OECD countries from 1961 to 2017, focusing on the degree of persistence. Using a methodology based on fractional integration, we explore if mean reversion takes place in the series or, if on the contrary, shocks do have a permanent nature. The empirical results show the existence of positive time trends in the majority of countries, the only exceptions being Greece, Japan, Portugal and the UK. Mean reversion is found in 17 out of the 25 countries examined; the unit root null hypothesis cannot be rejected in 7, while Japan is the only country with an order of integration significantly higher than 1. These findings suggest that short-term measures are more effective than long-term interventions in promoting fishery products consumption in most OECD countries. The policy implications are discussed in the final part of the manuscript.
鉴于渔业产品消费的营养相关性和健康益处,本文研究了1961年至2017年25个经合组织国家渔业产品消费的统计特性,重点关注持续程度。使用基于分数积分的方法,我们探索是否在序列中发生均值回归,或者相反,如果冲击确实具有永久性。实证结果表明,除希腊、日本、葡萄牙和英国外,大多数国家都存在积极的时间趋势。在所调查的25个国家中,有17个发现了均值回归;单位根零假设在7中不能被拒绝,而日本是唯一一个整合阶数显著高于1的国家。这些调查结果表明,在大多数经合发组织国家,短期措施比长期干预在促进渔业产品消费方面更为有效。在手稿的最后部分讨论了政策含义。
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引用次数: 0
Machine learning for extracting morphological phenotypic traits and estimating weight in largemouth bass 基于机器学习的大口黑鲈形态表型特征提取与体重估计
Q1 Agricultural and Biological Sciences Pub Date : 2026-03-01 Epub Date: 2025-09-29 DOI: 10.1016/j.aaf.2025.09.004
Zhipeng He , Youbo Jiang , Xu Wang , Yan Xie , Yi Cheng , Jie Mei
The acquisition of phenotypic data is fundamental for the genetic breeding of aquatic animals. To enhance the efficiency of obtaining phenotypic data for largemouth bass (LMB), we developed a phenotype extraction that employed the key points detection Real-Time Multi-Person Pose Estimation (RTMPose) model for rapid, efficient, and accurate measurement of morphological phenotypic data from captured images. 717 images were respectively acquired from the side view and top view and constructed the corresponding datasets. After training and validating the image dataset using the RTMPose model, 15 morphological traits data (total body length, body length, body height, jaw length, head length, head height, trunk length, pectoral fin length, dorsal fin length, anal fin length, caudal fin length, caudal peduncle length, caudal peduncle height, distance between eyes, and body thickness) were measured. All traits achieved the MAPE of less than 3%, and most traits exhibited R2 values exceeding 94%. Subsequently, multiple machine learning models were constructed to predict body weight (BW) and carcass weight (CW) of LMB. Among them, multiple linear regression, ridge regression, lasso regression, and support vector regression yielded similarly high predictive performance, For BW, these four models achieved R2 values of approximately 0.943, with MAE ranging from 8.167 to 8.338 g, RMSE between 11.903 and 12.036 g, and MAPE from 1.957% to 1.979%. For CW, the R2 was around 0.880, with MAE values between 8.597 and 8.681 g, RMSE ranging from 11.388 to 11.568 g, and MAPE between 3.291% and 3.328%. And SHAP analysis identified body height as the key morphological trait influencing both BW and CW in the sampled population. Our findings demonstrate that integrating keypoint detection with machine learning enables efficient and accurate phenotyping and weight prediction in fish, highlighting its practical value for intelligent aquaculture and breeding applications.
表型数据的获取是水生动物遗传育种的基础。为了提高大口黑鲈(largemouth bass, LMB)表型数据的获取效率,我们开发了一种基于关键点检测实时多人姿态估计(RTMPose)模型的表型提取方法,从捕获的图像中快速、高效、准确地测量形态表型数据。分别从侧视图和俯视图获取717幅图像,构建相应的数据集。利用RTMPose模型对图像数据集进行训练和验证后,测量了15个形态特征数据(体长、体长、体高、下颚长、头长、头高、躯干长、胸鳍长、背鳍长、肛鳍长、尾鳍长、尾柄长、尾柄高、眼距、体厚)。所有性状的MAPE均小于3%,大部分性状的R2值超过94%。随后,构建了多个机器学习模型来预测LMB的体重(BW)和胴体重(CW)。其中,多元线性回归、ridge回归、lasso回归和支持向量回归的预测效果同样优异,对于体重,4种模型的R2值均接近0.943,MAE在8.167 ~ 8.338 g之间,RMSE在11.903 ~ 12.036 g之间,MAPE在1.957% ~ 1.979%之间。CW的R2约为0.880,MAE值为8.597 ~ 8.681 g, RMSE值为11.388 ~ 11.568 g, MAPE值为3.291% ~ 3.328%。SHAP分析发现,体高是影响样本种群体重和体重的关键形态性状。我们的研究结果表明,将关键点检测与机器学习相结合,可以高效准确地预测鱼类的表型和体重,突出了其在智能水产养殖和育种应用中的实用价值。
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引用次数: 0
Evaluation of flesh quality and antioxidant responses in grow-out largemouth bass (Micropterus salmoides) with novel protein substitutes 新型蛋白质代用品对生长大口黑鲈肉质和抗氧化反应的评价
Q1 Agricultural and Biological Sciences Pub Date : 2026-03-01 Epub Date: 2025-08-08 DOI: 10.1016/j.aaf.2025.06.002
Muhammad Rizwan , Lukuan Li , Gang Yang, Zhen Zhang, Chunfang Wang
The present research evaluated the impact of various novel protein sources, including Tenebrio molitor (TM), cottonseed protein concentrate (CSM), Clostridium autoethanogenum (CAP), and Chlorella vulgaris (ChM), on the muscle traits of grow-out largemouth bass. Fish (211.9 ± 1.2) g were fed five meals for eight weeks. Dietary protein sources significantly influenced growth performance and feed utilization. The fishmeal (FM) group exhibited the highest final body weight, feed conversion ratio (FCR), and protein efficiency ratio (PER). In contrast, alternative protein diets, particularly TM, CSM, and CAP, resulted in reduced growth and feed efficiency. The ChM group showed a comparable final weight to fishmeal (FM), though with slightly lower feed efficiency. Muscle antioxidant profiles demonstrated stable SOD activity (P > 0.05) among groups, while the ChM diet increased GSH-Px activity (P < 0.05), and the CSM diet elevated MDA levels (P < 0.05). The muscle texture analysis revealed initial reductions in hardness, gumminess, chewiness, and tenderness, followed by improvements across protein sources. Protein sources modified the amino acid profile without affecting fatty acids. The ChM group had a higher unsaturated fatty acids (UFA)/saturated fatty acids (SFA) ratio than FM, with no significant changes in UFA or SFA levels (P > 0.05). TM groups had lower n-3 PUFA content than FM (P < 0.05), and ChM had higher n-6 PUFA content than FM (P < 0.05). Novel proteins reduced the n-3/n-6 PUFA ratio than FM (P < 0.05) with no differences among treatments (P > 0.05). The novel protein groups also had a significantly lower n-3/n-6 PUFA ratio than FM (P < 0.05). The transcript analysis indicated that the ChM group upregulated the expression of myf5, myod, and myog, while the diets downregulated the expression of mstn. The z-score analysis indicated that ChM is the most valuable for muscle texture and growth. The results indicated that ChM and other innovative diets can enhance muscle quality and aquaculture productivity.
本研究评价了黄粉虫(tenbrio molitor, TM)、棉籽浓缩蛋白(CSM)、自产乙醇梭菌(Clostridium autoethanogenum, CAP)和小球藻(Chlorella vulgaris, ChM)等多种新型蛋白质来源对长出大口黑鲈肌肉性状的影响。鱼(211.9±1.2)g,饲喂5次,连续8周。饲粮蛋白质来源显著影响生长性能和饲料利用率。鱼粉组的末重、饲料系数和蛋白质效率最高。相反,替代蛋白质饲粮,特别是TM、CSM和CAP,导致生长和饲料效率降低。ChM组的末重与鱼粉(FM)相当,但饲料效率略低。各组肌肉抗氧化谱显示SOD活性稳定(P > 0.05),而ChM日粮提高了GSH-Px活性(P < 0.05), CSM日粮提高了MDA水平(P < 0.05)。肌肉质地分析显示,硬度、黏性、咀嚼性和柔软度最初有所降低,随后蛋白质来源有所改善。蛋白质来源在不影响脂肪酸的情况下改变了氨基酸谱。中药组不饱和脂肪酸(UFA)/饱和脂肪酸(SFA)比值高于鱼粉组,但UFA和SFA水平无显著变化(P > 0.05)。TM组n-3 PUFA含量低于FM组(P < 0.05), ChM组n-6 PUFA含量高于FM组(P < 0.05)。新型蛋白比FM降低了n-3/n-6 PUFA比率(P < 0.05),处理间无差异(P < 0.05)。新型蛋白组的n-3/n-6 PUFA比率也显著低于FM组(P < 0.05)。转录本分析表明,ChM组上调了myf5、myod和myog的表达,而饮食组下调了mstn的表达。z-score分析表明,ChM对肌肉质地和生长最有价值。结果表明,ChM和其他创新饲粮可提高肌肉品质和养殖生产力。
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引用次数: 0
Effects of salinities on the growth performance, muscle's flavor and transcriptomic responses in yellowfin seabream (Acanthopagrus latus) 盐度对黄鳍鱼生长性能、肌肉风味及转录组反应的影响
Q1 Agricultural and Biological Sciences Pub Date : 2026-03-01 Epub Date: 2025-06-03 DOI: 10.1016/j.aaf.2025.05.005
Guobin Zheng , Liangmin Huang , Dongling Zhang , Jing Zhang , Shuiqing Wu , Xiande Liu
Yellowfin seabream (Acanthopagrus latus) is a euryhaline fish species of significant economic importance, and salinity, as one of important ecological factors, widely affects its growth, metabolism, and flesh quality of the fish. Current study was conducted to investigate the growth performance, muscle's flavor and transcriptomic responses of A. latus (8.25 ± 1.85 g) cultured in different salinities (6, 13, 20, 27 and 34 psμ). At the end of the 12-week culture trials, the final size, weight gain and specific growth rate (SGR) of A. latus were significantly impacted by salinity, with the highest SGR at 20 psμ (P < 0.05) and lowest at 34 psμ. The contents of polyunsaturated fatty acid (PUFA) (including eicosapentaenoic acid, EPA and docosahexaenoic acid, DHA) and linoleic acid in at 6 psμ were significantly higher than those at any other salinity (P < 0.05). The total content of volatile compounds in flesh was the highest in 20 psμ, of which there were more abundant aldehydes and ketones. Transcriptomic analysis identified differentially expressed genes (DEGs) between the 20 psμ and 34 psμ, with 161 genes up-regulated and 86 genes down-regulated in the 20 psμ. These DEGs were associated with muscle growth and development, amino acid metabolism, carbohydrate metabolism, and others. The reliability of transcriptome data was validated using qRT-PCR based on ten selected growth-related genes, which showed the same trends as the RNA-seq results. From the overall results of this study, we infer the growth performance and flavor can be significantly improved at the salinity of 20 psμ, and the fatty acid composition can be significantly improved at the salinity of 6 psμ for yellowfin seabream.
黄鳍海鲷(Acanthopagrus latus)是一种具有重要经济价值的泛盐鱼类,盐度作为重要的生态因子之一,广泛影响着黄鳍海鲷的生长、代谢和肉质。本研究研究了在不同盐度(6、13、20、27和34 psμ)下培养的鱼(8.25±1.85 g)的生长性能、肌肉风味和转录组反应。在12周的培养试验结束时,盐度对鱼的最终大小、增重和特定生长率(SGR)有显著影响,在20 psμ时SGR最高(P < 0.05),在34 psμ时SGR最低。多不饱和脂肪酸(PUFA)(包括二十碳五烯酸、EPA和二十二碳六烯酸、DHA)和亚油酸含量显著高于其他盐度(P < 0.05)。果肉中挥发性物质的总含量在20 pμ左右最高,其中醛类和酮类含量较高。转录组学分析发现20和34个psμ之间存在差异表达基因(DEGs),其中20个psμ中有161个基因上调,86个基因下调。这些deg与肌肉生长发育、氨基酸代谢、碳水化合物代谢等有关。基于10个选择的生长相关基因,使用qRT-PCR验证了转录组数据的可靠性,结果显示与RNA-seq结果相同的趋势。从本研究的总体结果来看,盐度为20 psμ可显著改善黄鳍鲷的生长性能和风味,盐度为6 psμ可显著改善黄鳍鲷的脂肪酸组成。
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引用次数: 0
Dynamic expression and regulation of corticotropin-releasing hormone and urotensin I during metamorphosis of olive flounder Paralichthys olivaceus 促肾上腺皮质激素释放激素和尿紧张素I在橄榄比目鱼变态过程中的动态表达与调控
Q1 Agricultural and Biological Sciences Pub Date : 2026-03-01 Epub Date: 2025-08-23 DOI: 10.1016/j.aaf.2025.08.004
Mengmeng Shi , Junping Wang , Haiying Shi , Jiahao Wang , Weiqun Lu
Corticotropin-releasing hormone (CRH) and Urotensin I (UI) are considered as key players of adaptive physiology. In vertebrates, the role of thyroid hormones (THs) in triggering metamorphosis through the thyroid hormone receptors (TRs) is well known. However, the changes in corticotropin-releasing hormone and urotensin I expression, as well as their regulation by thyroid hormones during metamorphosis remain unclear. In this study, we investigated the dynamic changes of T3 and cortisol levels, as well as the expression patterns of CRH, UI and TRs, and their response to T3 and a synthetic inhibitor of T3 during metamorphosis of P. olivaceus. Our results showed that CRH and UI mRNA expression levels remained low in the head during metamorphosis but sharply increased to a maximum after metamorphosis. Additionally, TRαA, TRαB, and TRβ showed distinct, stage-specific expression peaks. T3 levels peaked earlier than cortisol during metamorphosis, and exposure of 22 days after hatching (DAH) larvae to exogenous T3 significantly upregulated CRH and UI mRNA expression levels, while thiourea (TU) treatment led to their downregulation. Correlation analysis results further revealed strong positive associations among CRH, UI, and TRs under T3 treatment, especially between TRαA and TRβ at 8 h post-treatment in the 50 nM T3 group. These findings suggest that T3 may exert a stimulatory effect on CRH and UI expression during metamorphosis of P. olivaceus, potentially through TRαA and TRβ, thereby providing new insights into the endocrine regulation of metamorphosis in teleosts.
促肾上腺皮质激素释放激素(CRH)和尿紧张素I (UI)被认为是适应性生理的关键参与者。在脊椎动物中,甲状腺激素(THs)通过甲状腺激素受体(TRs)触发变态的作用是众所周知的。然而,在变态过程中促肾上腺皮质激素释放激素和尿紧张素I的表达变化以及甲状腺激素对它们的调节尚不清楚。在本研究中,我们研究了油松鱼变态过程中T3和皮质醇水平的动态变化,CRH、UI和TRs的表达模式,以及它们对T3和一种合成T3抑制剂的响应。我们的研究结果表明,CRH和UI mRNA的表达水平在变形过程中在头部保持较低水平,但在变形后急剧上升至最大值。此外,TRαA、TRαB和TRβ均表现出明显的分期特异性表达高峰。T3水平在变态过程中比皮质醇更早达到峰值,孵化后22天(DAH)的幼虫暴露于外源T3显著上调CRH和UI mRNA表达水平,而硫脲(TU)处理导致其下调。相关分析结果进一步显示,T3处理下CRH、UI和TRs之间存在较强的正相关,尤其是50 nM T3组治疗后8 h时TRαA和TRβ之间的正相关。这些发现提示,T3可能通过TRαA和TRβ对硬骨鱼变态过程中CRH和UI的表达产生刺激作用,从而为硬骨鱼变态的内分泌调节提供了新的认识。
{"title":"Dynamic expression and regulation of corticotropin-releasing hormone and urotensin I during metamorphosis of olive flounder Paralichthys olivaceus","authors":"Mengmeng Shi ,&nbsp;Junping Wang ,&nbsp;Haiying Shi ,&nbsp;Jiahao Wang ,&nbsp;Weiqun Lu","doi":"10.1016/j.aaf.2025.08.004","DOIUrl":"10.1016/j.aaf.2025.08.004","url":null,"abstract":"<div><div>Corticotropin-releasing hormone (CRH) and Urotensin I (UI) are considered as key players of adaptive physiology. In vertebrates, the role of thyroid hormones (THs) in triggering metamorphosis through the thyroid hormone receptors (TRs) is well known. However, the changes in corticotropin-releasing hormone and urotensin I expression, as well as their regulation by thyroid hormones during metamorphosis remain unclear. In this study, we investigated the dynamic changes of T<sub>3</sub> and cortisol levels, as well as the expression patterns of CRH, UI and TRs, and their response to T<sub>3</sub> and a synthetic inhibitor of T<sub>3</sub> during metamorphosis of <em>P</em>. <em>olivaceus</em>. Our results showed that CRH and UI mRNA expression levels remained low in the head during metamorphosis but sharply increased to a maximum after metamorphosis. Additionally, TRαA, TRαB, and TRβ showed distinct, stage-specific expression peaks. T<sub>3</sub> levels peaked earlier than cortisol during metamorphosis, and exposure of 22 days after hatching (DAH) larvae to exogenous T<sub>3</sub> significantly upregulated CRH and UI mRNA expression levels, while thiourea (TU) treatment led to their downregulation. Correlation analysis results further revealed strong positive associations among CRH, UI, and TRs under T<sub>3</sub> treatment, especially between TRαA and TRβ at 8 h post-treatment in the 50 nM T<sub>3</sub> group. These findings suggest that T<sub>3</sub> may exert a stimulatory effect on CRH and UI expression during metamorphosis of <em>P</em>. <em>olivaceus</em>, potentially through TRαA and TRβ, thereby providing new insights into the endocrine regulation of metamorphosis in teleosts.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 298-309"},"PeriodicalIF":0.0,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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