Aquaculture Reports最新文献_第4页

Horizontal transmission of white spot syndrome virus (wssv) from Procambarus clarkii to Eriocheir sinensis in polyculture systems: Infection characteristics, physiological responses, and ecological impacts 克拉氏原螯虾向中华绒毛猴的白斑综合征病毒（wssv）水平传播：感染特征、生理反应和生态影响

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103313

Lin Zhang , Peng Huang , Jiancao Gao , Gangchun Xu , Jiayi Li , Yi Sun , Zemao Gu

Although laboratory studies have confirmed horizontal transmission of white spot syndrome virus (WSSV) among decapod crustaceans, its transmission dynamics in practical aquaculture remains poorly understood. This study investigated WSSV transmission from infected Procambarus clarkii to Eriocheir sinensis in a simulated polyculture environment. A 15-day outdoor pond experiment (120 m²) was conducted by co-culturing WSSV-infected crayfish with healthy crabs. Our results demonstrated successful cross-species transmission, with highest viral loads in gills and muscle tissues. Female crabs showed significantly higher susceptibility to infection than males. Physiological analysis revealed elevated oxidative stress markers in infected crabs, including increased superoxide dismutase activity and malondialdehyde levels. Molecular analysis showed upregulation of immune-related genes (anti-lipopolysaccharide factors, crustin, prophenoloxidase) in gills and muscle, indicating innate immune activation. We observed distinct tissue-specific responses: in male muscle, viral replication was associated with Nrf2 pathway activation and autophagy suppression, while gills tissues exhibited apoptosis potentially limiting viral spread. Plankton community shifts were also documented, with increased diatom and ciliate abundance but decreased green and golden algae in WSSV-infected waters. This study provides direct evidence of WSSV transmission between economically important crustacean species under practical aquaculture conditions, highlighting the disease risks in polyculture systems and the need for strict carrier screening.

虽然实验室研究已经证实白斑综合征病毒（WSSV）在十足甲壳类动物之间的水平传播，但其在实际水产养殖中的传播动态仍然知之甚少。本研究在模拟混养环境中研究了感染的克氏原螯虾对中华毛螯蟹的WSSV传播。将感染wssv的小龙虾与健康蟹共培养15 d（120 m²）。我们的结果证明了成功的跨物种传播，在鳃和肌肉组织中具有最高的病毒载量。雌蟹对感染的易感性明显高于雄蟹。生理分析显示，感染螃蟹的氧化应激标志物升高，包括超氧化物歧化酶活性和丙二醛水平升高。分子分析显示，免疫相关基因（抗脂多糖因子、硬壳蛋白、酚氧化酶原）在鳃和肌肉中上调，表明先天免疫激活。我们观察到不同的组织特异性反应：在男性肌肉中，病毒复制与Nrf2通路激活和自噬抑制有关，而鳃组织则表现出可能限制病毒传播的细胞凋亡。浮游生物群落的变化也有记录，在wssv感染的水域中，硅藻和纤毛虫的丰度增加，而绿藻和金藻的丰度减少。本研究为实际养殖条件下具有重要经济价值的甲壳类动物之间的WSSV传播提供了直接证据，突出了混养系统的疾病风险和严格的携带者筛选的必要性。

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引用次数: 0

Effects of substitution of moist fermented feed for dry pellet feed on hepatopancreas and intestinal health, and intestinal microbiota homeostasis of Pacific white shrimp (Litopenaeus vannamei) 湿发酵饲料替代干颗粒饲料对凡纳滨对虾肝胰腺和肠道健康及肠道菌群稳态的影响

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103337

Qingshuang Zhang , Tsegay Teame , Hongwei Yang , Shaojun Wei , Qianwen Ding , Yuanyuan Yao , Yalin Yang , Chao Ran , Zhen Zhang , Zhigang Zhou

The present study evlatuated the effects of moist fermented feed (MFF) substituted for dry pellet feed on hepatopancreas and intestine health and intestinal microbiota of Pacific white shrimp (Litopenaeus vannamei). A total of 150 shrimp (1.56 ± 0.02 g) were fed with moist fermented feed once every two days (MFF0.5/4), once a day (MFF1/4), twice a day (MFF2/4) and four times a day (MFF4/4) or the control diet (dry pellet feed) for 8 weeks. MFF had no effect on the weight gain rate (WGR) of shrimp, but showed a notable lower survival rate (SR) and feed conversion ratio (FCR) in the MFF4/4 group (P < 0.05). The levels of TAG and R-cells in the hepatopancreas of the MFF1/4 group were markedly lower (P < 0.05). Additionally, the hepatopancreas level of T-AOC in MFF1/4 and the activity of SOD in MFF1/4 and MFF2/4 groups were significantly increased (P < 0.05). The expressions of nf-kb and penaeidin-3a and crustin genes in the hepatopancreas of shrimp fed on MFF0.5/4 and MFF1/4 were notably upregulated (P < 0.05). Relative to the control group, the expression of tgf-β in MFF1/4, Penaiedin-3a and Peritrophic in MFF0.5/4 and MFF1/4 groups were noteworthy upregulated in the intestine (P < 0.05). Moreover, MFF0.5/4, MFF1/4 and MFF2/4 levels improved the intestinal microbiota of shrimp by decreasing the abundance of opportunistic pathogen Vibrio and Pseudomonas genus. In summary, feeding MFF once a day or once every two days improved the hepatopancreatic and intestinal health of shrimp, and feeding MFF once a day seems better for promoting the health of shrimp.

本研究评价了湿发酵饲料（MFF）替代干颗粒饲料对凡纳滨对虾（Litopenaeus vannamei）肝胰脏和肠道健康及肠道微生物群的影响。试验选取150只（1.56 ± 0.02 g）对虾，每2天饲喂1次（MFF0.5/4）、1天饲喂1次（MFF1/4）、2天饲喂2次（MFF2/4）、4天饲喂1次（MFF4/4）或对照饲料（干颗粒饲料），为期8周。MFF对对虾增重率无显著影响，但显著降低了MFF4/4组对虾的成活率和饲料系数（P <； 0.05）。MFF1/4组肝胰腺中TAG和r细胞水平明显降低（P <； 0.05）。MFF1/4和MFF2/4组肝胰腺T-AOC水平及SOD活性均显著升高（P <； 0.05）。饲喂MFF0.5/4和MFF1/4的对虾肝胰腺中nf-kb、penaeidin-3a和crustin基因的表达显著上调（P <； 0.05）。与对照组相比，MFF0.5/4和MFF1/4组MFF1/4组织中tgf-β、Penaiedin-3a和periitrophic组织中tgf-β的表达明显上调（P <； 0.05）。此外，MFF0.5/4、MFF1/4和MFF2/4水平通过降低条件致病菌弧菌和假单胞菌属的丰度，改善了对虾肠道微生物群。综上所述，每天饲喂1次或每2天饲喂1次MFF均可改善对虾的肝、胰和肠道健康，且每天饲喂1次MFF似乎更有利于促进对虾的健康。

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引用次数: 0

Dietary inclusion of agricultural by-products, algae, and probiotics in a dry feed: Effects on growth performance, survival, immune response, biochemical indices, and reproductive traits of Artemia parthenogenetica 干饲料中添加农副产物、藻类和益生菌对孤雌蒿生长性能、存活率、免疫应答、生化指标和生殖性状的影响

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103342

Saeid Vahdat , Farzaneh Noori , Gilbert Van Stappen , Naser Agh

The cultivation of Artemia, a vital live food for fish and shellfish larvae, is hindered by the inconsistent supply and high costs of fresh microalgae, limiting sustainable larviculture in aquaculture. The cultivation of Artemia, a vital live food for fish and shellfish larvae, is hindered by the inconsistent supply and high costs of fresh microalgae, limiting sustainable larviculture in aquaculture. To address these challenges related to high microalgal feed costs and supply inconsistency, we developed and tested formulated dry feeds incorporating agricultural by-products (rice bran, wheat bran, soybean meal), varying levels of algae (5 % or 10 %), and probiotic bacteria (Bacillus coagulans and Bacillus subtilis at 0 %, 0.6 %, or 1.2 %) against a control diet (25 % algae + 75 % yeast). Artemia parthenogenetica cysts were hatched under standard conditions, and nauplii were reared for 23 days in three replicates per treatment (n = 3) to evaluate growth, survival, biochemical composition, reproductive characteristics, digestive and oxidative stress enzymes, and resistance to Vibrio anguillarum. Reproductive assessments continued up to 73 days until all female Artemia are dead. The optimized formulation (10 % algae + 1.25 % probiotics) significantly improved Artemia nauplii growth (body length +15.8 %), survival (+12.5 %), and digestive protease activity (21 % higher alkaline protease) compared to the control. Notably, antioxidant enzyme activities—superoxide dismutase (SOD) and glutathione peroxidase (GPx)—declined progressively in control-fed Artemia with extended culture duration; however, probiotic supplementation substantially attenuated this decline, indicating sustained antioxidant capacity. During pathogen challenge with Vibrio anguillarum, probiotic-supplemented Artemia exhibited superior survival across all life stages (nauplii: 92.24 % vs. 41.99 % in controls; adults: 70.09 % vs. 45.22 %), which was mechanistically linked to enhanced innate immune responses, including elevated alkaline protease activity and reduced oxidative stress biomarkers.

作为鱼类和贝类幼虫的重要活食，青蒿的种植受到新鲜微藻供应不稳定和成本高的阻碍，限制了水产养殖中可持续的幼虫养殖。作为鱼类和贝类幼虫的重要活食，青蒿的种植受到新鲜微藻供应不稳定和成本高的阻碍，限制了水产养殖中可持续的幼虫养殖。为了解决这些与高微藻饲料成本和供应不一致相关的挑战，我们开发并测试了配方干饲料，其中包括农业副产品（米糠、麦麸、豆粕）、不同水平的藻类（5 %或10 %）和益生菌（0 %、0.6 %或1.2 %），而对照饲料（25 %藻类+ 75 %酵母）。在标准条件下孵育孤雌蒿囊，每个处理3个重复，饲养23 d (n = 3)，评价其生长、存活、生化组成、繁殖特性、消化酶和氧化应激酶以及对鳗弧菌的抗性。生殖评估持续了73天，直到所有雌性阿尔忒弥亚都死亡。优化后的配方（10 %藻类+ 1.25 %益生菌）显著提高了豚草的生长（体长+15.8 %）、存活率（+12.5 %）和消化酶活性（碱性蛋白酶活性提高21 %）。抗氧化酶活性——超氧化物歧化酶（SOD）和谷胱甘肽过氧化物酶（GPx）——随着培养时间的延长逐渐下降；然而，补充益生菌大大减弱了这种下降，表明持续的抗氧化能力。在鳗弧菌的病原体攻击过程中，益生菌补充的青蒿在所有生命阶段都表现出更高的存活率（nauplii: 92.24 % vs. 41.99 %对照；成虫：70.09 % vs. 45.22 %），这与先天免疫反应增强有关，包括碱性蛋白酶活性升高和氧化应激生物标志物降低。

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引用次数: 0

Multi-dimensional evaluation of application effects of cottonseed protein as a feed protein source in Litopenaeus vannamei 棉籽蛋白作为饲料蛋白源在凡纳滨对虾中应用效果的多维评价

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103341

Leyuan Feng , Yuqi Zhong , Lili Lei , Wei Lu , Guojian Li , Yanru Huang , Jichang Jian , Shuanghu Cai , Shiping Yang

An eight-week feeding trial was conducted to evaluate the effects of cottonseed proteins A and B, prepared by different processing methods and substituted for soybean meal at 20 %, 40 %, and 60 %, on the growth performance, immune function, and intestinal health of Litopenaeus vannamei. Cottonseed protein A significantly improved weight gain rate, survival rate, and specific growth rate, and showed higher crude protein digestibility and digestive enzyme activity than protein B (P < 0.05). Cottonseed protein type (factor T) significantly affected weight gain rate, feed conversion ratio, and final body weight (P < 0.05). Both protein types enhanced PO, ALP, and ACP activities in serum and hepatopancreas (P < 0.05) but decreased GPX activity. At low substitution levels, cottonseed protein A significantly upregulated antioxidant-, autophagy-, and immune-related genes (P < 0.05). Histological analysis revealed that protein A caused no notable hepatopancreatic alterations, whereas 60 % substitution with protein B induced hepatocyte vacuolation and intestinal villus shedding. Intestinal microbiota analysis showed that the abundance of Photobacterium increased with substitution level in the protein A groups. In summary, cottonseed protein can partially replace fish meal and soybean meal in shrimp diets, with cottonseed protein A demonstrating superior effects on growth, immunity, and intestinal health. A substitution level not exceeding 40 % is recommended.

通过8周的饲养试验，研究了不同加工方法制备的棉籽蛋白A和B分别替代20% %、40% %和60% %的豆粕对凡纳滨对虾生长性能、免疫功能和肠道健康的影响。棉籽蛋白A显著提高了棉籽增重率、成活率和特定生长率，粗蛋白质消化率和消化酶活性均高于蛋白B （P <； 0.05）。棉籽蛋白类型（因子T）显著影响增重率、饲料系数和末重（P <； 0.05）。两种蛋白均能提高血清和肝胰腺中PO、ALP和ACP的活性（P <； 0.05），但降低GPX活性。在低替代水平下，棉籽蛋白A显著上调抗氧化、自噬和免疫相关基因（P <； 0.05）。组织学分析显示，蛋白A对肝胰腺无明显影响，而蛋白B替代60% %可引起肝细胞空泡化和肠绒毛脱落。肠道菌群分析表明，在蛋白A组中，光杆菌的丰度随着替代水平的增加而增加。综上所述，棉籽蛋白可以部分替代虾饲料中的鱼粉和豆粕，其中棉籽蛋白A对虾的生长、免疫和肠道健康的影响更大。建议替换量不超过40 %。

{"title":"Multi-dimensional evaluation of application effects of cottonseed protein as a feed protein source in Litopenaeus vannamei","authors":"Leyuan Feng , Yuqi Zhong , Lili Lei , Wei Lu , Guojian Li , Yanru Huang , Jichang Jian , Shuanghu Cai , Shiping Yang","doi":"10.1016/j.aqrep.2025.103341","DOIUrl":"10.1016/j.aqrep.2025.103341","url":null,"abstract":"<div><div>An eight-week feeding trial was conducted to evaluate the effects of cottonseed proteins A and B, prepared by different processing methods and substituted for soybean meal at 20 %, 40 %, and 60 %, on the growth performance, immune function, and intestinal health of <em>Litopenaeus vannamei</em>. Cottonseed protein A significantly improved weight gain rate, survival rate, and specific growth rate, and showed higher crude protein digestibility and digestive enzyme activity than protein B (<em>P</em> < 0.05). Cottonseed protein type (factor T) significantly affected weight gain rate, feed conversion ratio, and final body weight (<em>P</em> < 0.05). Both protein types enhanced PO, ALP, and ACP activities in serum and hepatopancreas (<em>P</em> < 0.05) but decreased GPX activity. At low substitution levels, cottonseed protein A significantly upregulated antioxidant-, autophagy-, and immune-related genes (<em>P</em> < 0.05). Histological analysis revealed that protein A caused no notable hepatopancreatic alterations, whereas 60 % substitution with protein B induced hepatocyte vacuolation and intestinal villus shedding. Intestinal microbiota analysis showed that the abundance of <em>Photobacterium</em> increased with substitution level in the protein A groups. In summary, cottonseed protein can partially replace fish meal and soybean meal in shrimp diets, with cottonseed protein A demonstrating superior effects on growth, immunity, and intestinal health. A substitution level not exceeding 40 % is recommended.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103341"},"PeriodicalIF":3.7,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145972734","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spirulina (Arthrospira platensis) and by-products from the fish processing industry as alternative protein sources to marine-origin meals in the weaning diets of mullet (Liza aurata) 螺旋藻（Arthrospira platensis）和鱼类加工业副产品在鲻鱼断奶日粮中替代海产饲料的蛋白质来源（Liza aurata）

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103358

Christian Monzón , Lidia Robaina , Raquel Quirós-Pozo , Javier Roo

The aquaculture industry is a major provider of fish for human consumption and is essential for meeting the increasing food demands of the global population. This study evaluated the use of Arthrospira platensis (Spirulina) and fish processing by-products as alternative protein sources to squid meal in weaning diets for Liza aurata (golden grey mullet) larvae. Larvae (initial weight: 1.92 ± 0.12 mg; length: 10.47 ± 1.01 mm) were reared from 31 to 52 days post-hatching (dph) under controlled laboratory conditions. Five experimental microdiets (MDs) were tested: a control diet containing 100 % squid meal as the protein source; three diets in which squid meal was partially replaced by 10 %, 20 %, or 40 % A. platensis (Arth10, Arth20, Arth40), all supplemented with lipid and vitamin–mineral premixes; and a Circular diet in which 90 % of the protein source was derived from fish by-products and formulated without additional lipid or micronutrient supplementation. Co-feeding with enriched Artemia sp. metanauplii was implemented and gradually reduced until MDs became the sole feed. Parameters assessed included growth, survival, skeletal anomalies, biochemical composition, stress response, and histological analysis of liver, pancreas, and intestine. The results indicated that A. platensis can replace up to 40 % of squid meal without compromising growth or survival, while larvae fed the non-fortified Circular diet showed significantly lower growth despite similar survival rates. Indicators of larval quality, including skeletal condition and histological features, were generally comparable among treatments, although differences in lipid deposition were observed and were primarily associated with dietary formulation. Reduced growth and altered biochemical composition in larvae fed the Circular diet were consistent with an energy and/or micronutrient limitation. Overall, these findings support the use of Spirulina as a partial replacement for marine-origin protein sources in mullet weaning diets when adequately supplemented and indicate that fish processing by-products require appropriate nutritional fortification to be effectively incorporated within circular-economy approaches in larval aquaculture.

水产养殖业是供人类消费的鱼类的主要提供者，对满足全球人口日益增长的粮食需求至关重要。本研究评价了在断奶日粮中利用螺旋藻和鱼类加工副产物替代鱿鱼粉饲喂金灰鲻鱼幼鱼的效果。在实验室控制条件下，于孵化后31 ~ 52 d饲养幼虫，初始体重：1.92 ± 0.12 mg，体长：10.47 ± 1.01 mm。试验了5种微饲料：以蛋白质含量为 %的鱿鱼粉为对照饲料；用10% %、20% %和40% %的platensis （Arth10、Arth20、Arth40）代替部分鱿鱼粉的3种饲料，均添加脂质和维生素矿物质预混料；一种循环饲料，其中90% %的蛋白质来源来自鱼类副产品，配方中不添加额外的脂质或微量营养素。与富营养化的黄颡鱼（Artemia sp. metanauplii）共同饲养，并逐渐减少，直至MDs成为唯一饲料。评估的参数包括生长、存活、骨骼异常、生化组成、应激反应以及肝脏、胰腺和肠道的组织学分析。结果表明，在不影响鱿鱼生长和成活率的情况下，platensis可替代高达40% %的鱿鱼饲料，而饲喂非强化循环饲料的幼虫生长明显较低，但成活率相似。不同处理的幼虫质量指标，包括骨骼状况和组织学特征，总体上具有可比性，尽管脂质沉积存在差异，且主要与饮食配方有关。饲喂圆形日粮的幼虫生长下降和生化组成改变与能量和/或微量营养素限制一致。总的来说，这些发现支持在适当补充的情况下，使用螺旋藻作为鲻鱼断奶日粮中海洋蛋白质来源的部分替代品，并表明鱼类加工副产品需要适当的营养强化，才能有效地纳入幼虫水产养殖的循环经济方法。

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引用次数: 0

The effects of replacing fish meal with defatted black soldier fly meal on the growth, apparent digestibility, and protein metabolism of subadult Chinese mitten crab(Eriocheir sinensis) 脱脂黑飞粉替代鱼粉对中华绒螯蟹亚成体生长、表观消化率和蛋白质代谢的影响

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103318

Jingyu Zhou, Junxiang Guan, Hao Sun, Xiaoyu Chu, Beile Ye, Cunkun Du, Xi Wang, Haokun Hua, Huixing Guo, Wenbin Liu, Guangzhen Jiang, Xiufei Cao

The unstable protein content of black soldier fly larvae (BSFL) limits its use in aquaculture. This study investigated the effects of substrate protein levels on larval composition and evaluated the effects of replacing fish meal (FM) with defatted black soldier fly larvae meal (BSFLM)—produced on a 45 % protein substrate—on the growth, amino acid profile, protein digestibility, and protein synthesis of subadult E.sinensis. BSFL were reared on diets with 10 % – 55 % protein for 20 days. Larval protein content increased with dietary protein and plateaued at 45 %, reaching 59.18 % in defatted BSFLM. Defatted BSFLM then replaced 33 %, 66 %, and 100 % of FM in crab diets (initial weight: 45.30 ± 0.08 g). The 33 % replacement group (BSFLM33) significantly improved survival without affecting growth, whereas total replacement (BSFLM100) reduced both survival and growth. No significant differences were found in crab body composition. Hepatopancreatic protease activity decreased in all replacement groups, and amylase activity declined significantly in the BSFLM100 group. The apparent digestibility of BSFLM protein was 77.99 %. In terms of amino acid composition, the content of sulfur-containing amino acids in the hepatopancreas was significantly lower than that in the control group. Downregulation of genes related to protein synthesis was also observed. In conclusion, rearing BSFL on a 45 % protein diet produces high-protein defatted BSFLM, which can effectively replace up to 33 % of FM in feeds for subadult E. sinensis.

黑兵蝇幼虫蛋白质含量不稳定，限制了其在水产养殖中的应用。本研究研究了底物蛋白质水平对幼虫组成的影响，并评价了在45 %蛋白质底物上生产的脱脂黑兵蝇幼虫粉（BSFLM）替代鱼粉对中华赤眼蜂亚成虫生长、氨基酸谱、蛋白质消化率和蛋白质合成的影响。在蛋白质含量为10 % ~ 55 %的饲粮上饲养20 d。幼虫蛋白质含量随饲料蛋白质含量的增加而增加，稳定在45 %，脱脂BSFLM达到59.18 %。脱脂BSFLM替代了初始体重为45.30 ± 0.08 g的蟹饲料中33 %、66 %和100 %的鱼粉。33% %替代组（BSFLM33）在不影响生长的情况下显著提高了生存，而完全替代组（BSFLM100）降低了生存和生长。蟹体成分无显著差异。所有替代组的肝胰腺蛋白酶活性均下降，BSFLM100组的淀粉酶活性显著下降。BSFLM蛋白的表观消化率为77.99 %。氨基酸组成方面，肝胰脏中含硫氨基酸含量显著低于对照组。蛋白质合成相关基因的下调也被观察到。综上所述，在45 %蛋白质饲粮上饲养白颡鱼可获得高蛋白脱脂白颡鱼，可有效替代饲料中高达33 %的鱼粉。

{"title":"The effects of replacing fish meal with defatted black soldier fly meal on the growth, apparent digestibility, and protein metabolism of subadult Chinese mitten crab(Eriocheir sinensis)","authors":"Jingyu Zhou, Junxiang Guan, Hao Sun, Xiaoyu Chu, Beile Ye, Cunkun Du, Xi Wang, Haokun Hua, Huixing Guo, Wenbin Liu, Guangzhen Jiang, Xiufei Cao","doi":"10.1016/j.aqrep.2025.103318","DOIUrl":"10.1016/j.aqrep.2025.103318","url":null,"abstract":"<div><div>The unstable protein content of black soldier fly larvae (BSFL) limits its use in aquaculture. This study investigated the effects of substrate protein levels on larval composition and evaluated the effects of replacing fish meal (FM) with defatted black soldier fly larvae meal (BSFLM)—produced on a 45 % protein substrate—on the growth, amino acid profile, protein digestibility, and protein synthesis of subadult <em>E.sinensis</em>. BSFL were reared on diets with 10 % – 55 % protein for 20 days. Larval protein content increased with dietary protein and plateaued at 45 %, reaching 59.18 % in defatted BSFLM. Defatted BSFLM then replaced 33 %, 66 %, and 100 % of FM in crab diets (initial weight: 45.30 ± 0.08 g). The 33 % replacement group (BSFLM33) significantly improved survival without affecting growth, whereas total replacement (BSFLM100) reduced both survival and growth. No significant differences were found in crab body composition. Hepatopancreatic protease activity decreased in all replacement groups, and amylase activity declined significantly in the BSFLM100 group. The apparent digestibility of BSFLM protein was 77.99 %. In terms of amino acid composition, the content of sulfur-containing amino acids in the hepatopancreas was significantly lower than that in the control group. Downregulation of genes related to protein synthesis was also observed. In conclusion, rearing BSFL on a 45 % protein diet produces high-protein defatted BSFLM, which can effectively replace up to 33 % of FM in feeds for subadult <em>E. sinensis.</em></div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103318"},"PeriodicalIF":3.7,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alteration in hematological and serum biochemical parameters of rainbow trout, Oncorhynchus mykiss, during citrobacteriosis outbreak 柠檬酸杆菌病爆发期间虹鳟鱼血液学和血清生化指标的变化

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103322

Shagufta Ishtiyaq , Imtiaz Ahmed , Firdous A. Khanday , Mohammad Abul Farah

The aquaculture sector is crucial for global food security, yet it faces considerable problems from infectious diseases. Oncorhynchus mykiss, being one of the most vital cultured freshwater fish species in India, faces a significant challenge from an emerging bacterial disease called citrobacteriosis. The disease poses a significant threat to rainbow trout aquaculture since it can cause major financial losses through mortalities, slowed development rates, and enhanced sensitivity to other diseases. It affects the economics and sustainability of rainbow trout farming as well as the approaches to disease management. The present study investigates the hematological and serum biochemical alterations in rainbow trout, Oncorhynchus mykiss, during a natural outbreak of citrobacteriosis caused by Citrobacter gillenii and Citrobacter freundii. The results indicate significant (P < 0.05) reductions in red blood cells (RBC), hemoglobin (Hb), and hematocrit (Hct) content, along with notable changes in metabolic parameters, such as elevated glucose and blood urea nitrogen (BUN) levels during the outbreak of disease. These changes suggest metabolic shifts, hepatic damage, and renal dysfunction. Biochemical and molecular characterization (16S rRNA gene sequencing) was carried out for the proper identification. The pathogens identified through PCR were submitted to the GenBank under the accession numbers PQ686306 for C. gillenii LKRT11 and PQ686305 for C. freundii LKRT01. Principal Component Analysis (PCA) distinguished diseased fish from healthy fish, thus validating the importance of these biomarkers for fish health diagnostics. Blood profiling acts as a non-invasive, low-cost diagnostic initial marker used for the early identification of physiological changes occurring in fish, while PCR offers pathogen-specific detection. Therefore, combining the use of PCR for proper identification of the pathogen in addition to the hematological and serum biochemical analysis would be useful for early detection of the physiological and metabolic shift in the fish body during the outbreak of disease.

水产养殖部门对全球粮食安全至关重要，但它面临着相当大的传染病问题。作为印度最重要的淡水鱼品种之一，紫吻Oncorhynchus正面临着一种新出现的细菌性疾病——柠檬酸杆菌病的重大挑战。该疾病对虹鳟鱼养殖业构成重大威胁，因为它可以通过死亡率、发育速度减慢和对其他疾病的敏感性增强而造成重大经济损失。它影响虹鳟鱼养殖的经济性和可持续性以及疾病管理的方法。本研究调查了由吉列柠檬酸杆菌和弗氏柠檬酸杆菌引起的自然爆发期间虹鳟鱼血液学和血清生化的变化。结果表明，在疾病爆发期间，红细胞（RBC）、血红蛋白（Hb）和红细胞压积（Hct）含量显著（P <； 0.05）降低，代谢参数（如葡萄糖和血尿素氮（BUN）水平升高）也发生了显著变化。这些变化提示代谢变化、肝损害和肾功能不全。进行生化和分子鉴定（16S rRNA基因测序）。经PCR鉴定的病原菌分别提交到GenBank，吉列氏C. LKRT11和弗氏C. LKRT01的登录号分别为PQ686306和PQ686305。主成分分析（PCA）将病鱼与健康鱼区分开来，从而验证了这些生物标志物对鱼类健康诊断的重要性。血液分析作为一种非侵入性、低成本的诊断初始标记物，用于早期识别鱼类发生的生理变化，而PCR提供病原体特异性检测。因此，在血液学和血清生化分析的基础上，结合PCR对病原菌进行正确的鉴定，将有助于在疾病爆发时早期发现鱼体的生理和代谢变化。

{"title":"Alteration in hematological and serum biochemical parameters of rainbow trout, Oncorhynchus mykiss, during citrobacteriosis outbreak","authors":"Shagufta Ishtiyaq , Imtiaz Ahmed , Firdous A. Khanday , Mohammad Abul Farah","doi":"10.1016/j.aqrep.2025.103322","DOIUrl":"10.1016/j.aqrep.2025.103322","url":null,"abstract":"<div><div>The aquaculture sector is crucial for global food security, yet it faces considerable problems from infectious diseases. <em>Oncorhynchus mykiss,</em> being one of the most vital cultured freshwater fish species in India, faces a significant challenge from an emerging bacterial disease called citrobacteriosis. The disease poses a significant threat to rainbow trout aquaculture since it can cause major financial losses through mortalities, slowed development rates, and enhanced sensitivity to other diseases. It affects the economics and sustainability of rainbow trout farming as well as the approaches to disease management. The present study investigates the hematological and serum biochemical alterations in rainbow trout, <em>Oncorhynchus mykiss,</em> during a natural outbreak of citrobacteriosis caused by <em>Citrobacter gillenii</em> and <em>Citrobacter freundii</em>. The results indicate significant (P < 0.05) reductions in red blood cells (RBC), hemoglobin (Hb), and hematocrit (Hct) content, along with notable changes in metabolic parameters, such as elevated glucose and blood urea nitrogen (BUN) levels during the outbreak of disease. These changes suggest metabolic shifts, hepatic damage, and renal dysfunction. Biochemical and molecular characterization (16S rRNA gene sequencing) was carried out for the proper identification. The pathogens identified through PCR were submitted to the GenBank under the accession numbers <strong>PQ686306</strong> for <em>C. gillenii</em> LKRT11 and <strong>PQ686305</strong> for <em>C. freundii</em> LKRT01. Principal Component Analysis (PCA) distinguished diseased fish from healthy fish, thus validating the importance of these biomarkers for fish health diagnostics. Blood profiling acts as a non-invasive, low-cost diagnostic initial marker used for the early identification of physiological changes occurring in fish, while PCR offers pathogen-specific detection. Therefore, combining the use of PCR for proper identification of the pathogen in addition to the hematological and serum biochemical analysis would be useful for early detection of the physiological and metabolic shift in the fish body during the outbreak of disease.</div></div>","PeriodicalId":8103,"journal":{"name":"Aquaculture Reports","volume":"46 ","pages":"Article 103322"},"PeriodicalIF":3.7,"publicationDate":"2026-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145973062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Morpho-genetic, ecophysiological and nutraceutical dimensions of Channa striata: Implication for sustainable aquaculture and functional food development 斑马鱼的形态发生、生理生态和营养价值：对可持续水产养殖和功能食品开发的启示

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103308

Rubaiya Pervin , Md. Ashraful Alam , Nazifa Tasnim , Sharmin Ahmed , Mohosena Begum Tanu , Imran Parvez

The striped snakehead, Channa striata (Bloch 1793) is a freshwater species of ecological, nutritional and economic importance across South and Southeast Asia. This review integrate current understanding of its morphological, genetic, ecophysiological and biochemical traits to identify key adaptive patterns, existing knowledge gaps and future research priorities. Considerable intraspecific variation is evident, shaped by habitat heterogeneity, aquaculture systems, and geographic lineage divergence. Molecular studies reveal substantial genetic diversity and regional structuring, providing insights into phylogeographic differentiation and implications for taxonomy, conservation, and broodstock management Ecophysiological analyses demonstrate C. striata’s exceptional tolerence to hypoxia, variable pH and temperature fluctuation and salinity, reflecting its adaptive plasticity and potential for climate resilient aquaculture. Concurrently, the species exhibits rich biochemical composition, characterized by high quality albumin content, essential fatty acids and bioactive peptides which contribute to both its stress resilience and nutraceutical value. Despite growing research, integrative studies linking morphology, genetics physiology remain limited. This review emphasizes the need for multi-omic approaches, comparative genomic analyses, and selective breeding of genetically characterized broodstock to enhance productivity, adaptability, and nutraceutical potential. Collectively, C. striata represents a model for understanding evolutionary adaptation in tropical fishes and a promising candidate for sustainable, health-oriented aquaculture under changing environmental conditions.

条纹蛇头，Channa striata （Bloch 1793）是一种在南亚和东南亚具有生态、营养和经济重要性的淡水物种。本文综述了目前对其形态、遗传、生态生理和生化特性的了解，以确定关键的适应模式、现有的知识差距和未来的研究重点。相当大的种内变异是明显的，由生境异质性、水产养殖系统和地理谱系分化形成。分子生物学研究揭示了纹状体丰富的遗传多样性和区域结构，为纹状体的系统地理分化以及分类、保护和养殖管理提供了新的思路。生态生理学分析表明纹状体对缺氧、酸碱度变化、温度波动和盐度具有特殊的耐受性，反映了其适应可塑性和气候适应性水产养殖的潜力。同时，该物种具有丰富的生物化学成分，其特征是高质量的白蛋白含量、必需脂肪酸和生物活性肽，这些都有助于其抗应激能力和营养价值。尽管越来越多的研究，结合形态学，遗传学生理学的综合研究仍然有限。这篇综述强调需要多组学方法、比较基因组分析和选择性育种的遗传特征的亲鱼，以提高生产力、适应性和营养保健潜力。总之，纹状体代表了理解热带鱼进化适应的一个模型，也是在不断变化的环境条件下可持续的、以健康为导向的水产养殖的一个有希望的候选者。

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引用次数: 0

Culture of yellow-tail lambari integrated with benthic species in earthen ponds 黄尾鳗与底栖生物在泥塘的综合养殖

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103343

Ariel C. Franchini, Dalton Belmudes, Wagner C. Valenti, Patricia Moraes-Valenti

In this study, we assessed the production of yellow-tail lambari (Astyanax lacustris), giant river prawn (Macrobrachium rosenbergii), and curimbata (Prochilodus lineatus) in two integrated aquaculture arrays. A completely randomized experiment was conducted in 12 earthen ponds over 62 days. Two treatments were tested: lambari + prawn (LP) and lambari + prawn + curimbata (LPC), with six replicates each. Only lambari were considered in the feeding management. Adding P. lineatus did not affect the performance of A. lacustris or water quality. However, the final average weight and productivity of M. rosenbergii decreased by 34 % and 25 %, respectively, in the presence of curimbata, while survival remained unaffected at 89 %. Lambari reached market size in two months with high survival rates (62–70 %), supporting its role as a short-cycle fed species. Curimbata growth was limited, with an average survival rate of 75 %, indicating poor performance under short cycles. Feed conversion ratios did not differ significantly between treatments. Curimbata marginally contributed to additional biomass beyond that already stocked, but helped diversify products and markets. These results highlight the benefits, constraints, and trade-offs of tri-species integrated systems. Yellow-tail lambari confirms its role as a key short-cycle species, while new management strategies are needed to optimize the coexistence of giant river prawns and curimbata. The study demonstrates the technical feasibility of integrating yellow-tail lambari with giant river prawn in earthen pond systems, while exploring the opportunities and constraints of including curimbata.

在本研究中，我们评估了两个综合养殖阵列中黄尾蓝螯虾（Astyanax lacustris）、罗氏沼虾（Macrobrachium rosenbergii）和curimbata （Prochilodus lineatus）的产量。在12个土池中进行了为期62天的完全随机试验。试验两种处理：兰巴利+ 对虾（LP）和兰巴利+ 对虾+ 芭蕉（LPC），每组6个重复。饲养管理中只考虑兰巴利。湖栖松茸的添加对湖栖松茸的生产性能和水质没有影响。然而，在curimbata存在的情况下，罗氏沼虾的最终平均体重和产量分别下降了34% %和25% %，而存活率未受影响，为89% %。兰巴里在两个月内达到市场规模，存活率高（62-70 %），支持其作为短周期喂养物种的作用。Curimbata生长有限，平均存活率为75% %，表明在短周期下表现不佳。不同处理间饲料系数无显著差异。Curimbata对已经储存的额外生物量贡献不大，但有助于使产品和市场多样化。这些结果突出了三物种整合系统的好处、限制和权衡。黄尾虾证实了其作为短周期物种的重要作用，而需要新的管理策略来优化河对虾和curimbata的共存。本研究论证了在泥塘系统中整合黄尾蓝螯虾与巨型河对虾的技术可行性，同时探讨了引入黄尾蓝螯虾的机会和制约因素。

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引用次数: 0

Development of specific microdiets for greater amberjack (Seriola dumerili) larvae with selected local microalgae 用选定的当地微藻为大琥珀幼虫开发特定的微饲料

IF 3.7 2区农林科学 Q1 FISHERIES

Aquaculture Reports

Pub Date : 2026-01-06 DOI: 10.1016/j.aqrep.2025.103349

Laura Rivero , Raquel Quirós-Pozo , Christian Monzón , Lidia Robaina , Javier Roo

The development of aquaculture faces significant challenges, particularly in ensuring the availability of juveniles. Greater amberjack (Seriola dumerili), known for its fast growth and market value, has potential for aquaculture diversification. However, one major obstacle is the weaning phase, where live prey (e.g., Artemia) must be replaced by inert microdiets. This study evaluates five experimental microdiets containing 4 % of selected microalgae (Nannochloropsis sp, Arthrospira platensis, Isochrysis galbana, Tetraselmis striata, and Dunaliella salina) on the growth, survival, stress resistance, histology and osteology of Seriola larvae. The best results for growth, survival and stress resistance were observed with the Nannochloropsis sp diet. Histological and osteological studies showed minor differences among diets, with the lowest incidence of vertebral anomalies occurring in the I. galbana treatment.

水产养殖的发展面临重大挑战，特别是在确保获得幼鱼方面。大琥珀（Seriola dumerili）以其快速生长和市场价值而闻名，具有水产养殖多样化的潜力。然而，一个主要的障碍是断奶阶段，在这个阶段，必须用惰性微饲料代替活的猎物（例如，Artemia）。本研究评价了5种实验微饲料中添加4 %的选定微藻（Nannochloropsis sp、Arthrospira platensis、Isochrysis galbana、Tetraselmis striata和Dunaliella salina）对恙虫病幼虫生长、存活、抗逆性、组织学和骨学的影响。结果表明，纳米绿藻饲料的生长、成活率和抗逆性最好。组织学和骨学研究显示，不同饮食之间的差异较小，其中，在红腹菜治疗中，椎体异常的发生率最低。

引用次数: 0