Aquaculture最新文献

{"title":"Corrigendum to “Effects of fasting on golden pompano Trachinotus ovatus: Physiological and biochemical responses” [Aquaculture, Volume 595, Part 1, 30 January 2025, 741637]","authors":"Xing Ren , Xiaojie Lu , Yubo Wu , Li Zhang , Huawei Ma , Yueyuan Tan , Yao Guan , Renming Jia , Enge Xie , Aiping Feng , Ning Zhang","doi":"10.1016/j.aquaculture.2024.741897","DOIUrl":"10.1016/j.aquaculture.2024.741897","url":null,"abstract":"","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741897"},"PeriodicalIF":3.9,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Corrigendum to “Gamma ray irradiation enhances defatted Hermetia illucens larvae meal as a dietary alternative to fishmeal for Acanthopagrus schlegelii juveniles” [Aquaculture, Volume 588, 15 July 2024, 740948]","authors":"Xing Ren , Yueyuan Tan , Xinzhi Weng , Jie He , Enge Xie , Aiping Feng , Yubo Wu","doi":"10.1016/j.aquaculture.2024.741896","DOIUrl":"10.1016/j.aquaculture.2024.741896","url":null,"abstract":"","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741896"},"PeriodicalIF":3.9,"publicationDate":"2024-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663692","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Autocrine/paracrine fibroblast growth factor 1 (FGF1) enhances systemic lipid metabolism in rainbow trout fed with a high-fat diet by elevating uridine levels through the AMPK signaling pathway and activating the upp2 promoter via irf1","authors":"Huixia Yu ,&nbsp;Haolin Mo ,&nbsp;Xiaoran An ,&nbsp;Mingxing Yao ,&nbsp;Jiuwei Gao ,&nbsp;Jiajia Yu ,&nbsp;Dongmei Xiong ,&nbsp;Haixia Liu ,&nbsp;Yang Li ,&nbsp;Lixin Wang","doi":"10.1016/j.aquaculture.2024.741885","DOIUrl":"10.1016/j.aquaculture.2024.741885","url":null,"abstract":"<div><div>Fibroblast growth factor 1 (FGF1) is recognized for its role in regulating vertebrate energy metabolism, yet its impact on metabolic fatty liver disease in fish remains unexamined. This study investigates the regulatory mechanism of the autocrine/paracrine cytokine FGF1 on systemic lipid metabolism in rainbow trout (<em>Oncorhynchus mykiss</em>) subjected to a high-fat diet (HFD). Experimental fish (540 in total) were divided between two dietary groups (low-fat diet (LFD) and HFD) and categorized into three treatment groups: LFD + PBS (LFD injected with PBS), HFD + PBS (HFD injected with PBS), and HFD + rFGF1 (HFD injected with recombinant FGF1 protein). Over a 6-week period on the HFD, rainbow trout demonstrated weight gain and signs of metabolic dysregulation. However, compared to the HFD + PBS group, exogenous rFGF1 administration significantly lowered hepatosomatic index (HSI), whole-body, muscle, and liver crude fat content, hepatic vacuole formation, serum triglyceride (TG), serum LDL-c, and the expression levels of fatty acid synthesis (<em>fas</em>) and transport genes (<em>cd36</em>, <em>fatp6</em>), while elevating HDL-c and the expression levels of fatty acid oxidation genes (<em>cpt1a</em>, <em>ppar</em>α, and <em>acox1</em>) (<em>P</em> &lt; 0.05), thereby alleviating HFD-induced lipid accumulation without a significant impact on body weight (<em>P</em> &gt; 0.05). Serum metabolomic analysis indicated that rFGF1 significantly elevated serum uridine levels (<em>P</em> &lt; 0.05), with uridine demonstrating a capacity to regulate hepatocyte lipid metabolism effectively. Furthermore, rFGF1 was shown to enhance hepatic uridine biosynthesis through the AMPK signaling pathway, concurrently modulating uridine catabolism by downregulating interferon regulatory factor 1 (irf1) and altering its transcriptional control of uridine phosphorylase 2 (upp2). These findings suggest that rFGF1 mitigates hepatic lipid accumulation in rainbow trout under an HFD by promoting uridine synthesis <em>via</em> the AMPK pathway and partially inhibiting uridine catabolism through IRF1-UPP2 signaling.</div></div>","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741885"},"PeriodicalIF":3.9,"publicationDate":"2024-11-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of LED spectrum on the vision, appetite, and growth of red seabream (Pagrus major)","authors":"Si-Chan Kim ,&nbsp;Ji-Sung Moon ,&nbsp;Josel Cadangin ,&nbsp;Eun-Seo Lee ,&nbsp;Bo-Hyun Joo ,&nbsp;Han-Sik Kim ,&nbsp;Sang-Woo Hur ,&nbsp;Youn Hee Choi","doi":"10.1016/j.aquaculture.2024.741889","DOIUrl":"10.1016/j.aquaculture.2024.741889","url":null,"abstract":"<div><div>Fish perceive different types of light, and the optimal light regime (intensity, spectrum, photoperiod) for growth, development, or reproduction varies across different species. Physiologically, the retina of the eye converts light into electrical signals and sent to the brain, with the hypothalamus producing endocrine hormones stimulating responses such as feeding behavior and appetite suppression or incitement. In the current study, the effects of various LED spectrum on the vision, appetite, and growth of red seabream (<em>Pagrus major</em>) were investigated. Cylindrical tanks equipped with LED covers emitting red (660 nm), green (518 nm), blue (450 nm), and white (full spectrum) light (all under 150 lx illumination) were used for the experimental groups. Photoperiod was set at 12 L: 12D cycle. Initially, red seabream (<em>P. major</em>) weighed 123.07 ± 15.25 g. After 12 weeks, fish reared under blue LED light weighed the most at 336.61 ± 63.11 g, followed by green (318.95 ± 62.06 g), white (308.16 ± 47.13 g), and red (271.32 ± 45.15 g). Changes in the retinal structure indicated that the red LED experimental group developed thinner retinas, whereas the blue LED group had the thickest retinas (<em>P</em> &lt; 0.05). Rh1, Rh2A, Rh2B, and LWS mRNA expressions were highest in the red experimental group, while SWS2 was highest in the blue experimental group (<em>P</em> &lt; 0.05). The blue experimental group exhibited significantly higher levels of appetite-promoting peptides, whereas the red experimental group had higher levels of appetite-suppressing peptides (<em>P</em> &lt; 0.05). Gene expressions of HSP70 and SOD expressions, related to oxidative stress, were elevated in the red experimental group (<em>P</em> &lt; 0.05). These results suggest that blue light enhances appetite and growth without causing retinal damage, while exposure to red light had the opposite effect. Thus, the findings illustrated that blue light can be used as a controlled lighting strategy for enhanced red seabream (<em>P. major</em>) aquaculture production.</div></div>","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741889"},"PeriodicalIF":3.9,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663371","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of host-derived Enterococcus faecium L6 on growth performance, intestinal health and antibacterial activities of juvenile grass carp","authors":"Xiaonan Sun,&nbsp;Hongzhou Xu,&nbsp;Yanzhen Song,&nbsp;Jingfei Long,&nbsp;Chenyang Yan,&nbsp;Xiaoyu Qi,&nbsp;Lixin Wang,&nbsp;Yuanjiang Jin,&nbsp;Haixia Liu","doi":"10.1016/j.aquaculture.2024.741879","DOIUrl":"10.1016/j.aquaculture.2024.741879","url":null,"abstract":"<div><div>The various diseases outbreaks and infections caused by pathogens have brought great losses to the aquaculture industry of grass carp. Probiotics are one of the important ways in water quality management and inhibition of bacterial diseases. Thus, more and more attention is being paid to potential indigenous probiotics. The present study isolated a probiotic strain of <em>Enterococcus faecium</em> (<em>E. faecium</em>) L6 from the intestinal content of healthy grass carp, and evaluated the probiotic effect in vitro. Subsequently, a feeding trial of 56 days was performed to evaluate the effect of <em>E. faecium</em> (1 × 10⁸ CFU/g) on growth performance in juvenile grass carp and infection resistance to <em>Aeromonas hydrophila</em> (<em>A. hydrophila</em>). Our data showed that diet supplementation with <em>E. faecium</em> L6 for 56 days significantly increased final body weight (FBW), weight gain rate (WGR), specific growth rate (SGR) of juvenile grass carp and decreased feed conversion ratio (FCR) compared to that of basal diet group without probiotic supplemented (<em>P</em> &lt; 0.05). The expression of inflammatory factors <em>TNF-α</em>, <em>IL-6</em> and <em>IL-1β</em> in the liver, spleen and kidney showed an early increase and later decrease, and ultimately restored a nearly normal level on 56 days of feeding, and tight junction proteins genes zonula occludens-2 (<em>ZO-2</em>), zonula occludens-3 (<em>ZO-3</em>), <em>occludin</em> and <em>claudin</em> were significantly up-regulated from 21 days after feeding <em>E. faecium</em> L6 supplementary diet (<em>P</em> &lt; 0.05). Following a challenge by <em>A. hydrophila</em> infection, there was an increase of 26.67 % in the survival rate of diet supplementation of <em>E. faecium</em> L6 group, and the bacterial load in the liver, spleen and kidney was significantly reduced after <em>E. faecium</em> L6 feeding (<em>P</em> &lt; 0.01). High-throughput sequencing of 16S rRNA gene revealed that <em>E. faecium</em> L6 feeding increased the relative abundance of the phylum Fusobacteriota and Bacteroidota, and <em>Cetobacterium</em> and <em>Bacteroides</em> at genus level in the intestinal microbiota composition, as well as improved the functional pathways related to metabolism of purine, biotin, cysteine, methionine, <span>d</span>-Glutamine and D-glutamate, and biosynthesis of aminoacyl-tRNA and lipopolysaccharide. Analysis of microbial community-level phenotypes revealed that aerobic, contains mobile elements, facultatively anaerobic, biofilm-forming, Gram-negative, potential-pathogenicity and stress-tolerance phenotypes were remarkably decreased in <em>E. faecium</em> L6 supplemented diet group, while anaerobic and Gram-positive phenotypes were highly increased. Collectively, <em>E. faecium</em> strain L6 as a prospective probiotic can be used in the healthy breeding of grass carp production.</div></div>","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741879"},"PeriodicalIF":3.9,"publicationDate":"2024-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of molecular advantages in offspring of large-sized Chinese mitten crabs based on reproductive lineage","authors":"Rongchen Liu ,&nbsp;Xianrui Lin ,&nbsp;Jinghao Hu ,&nbsp;Jiajia Yang ,&nbsp;Xuguang Li ,&nbsp;Gang Wang ,&nbsp;Yuzhu Yang ,&nbsp;Yuchen Chen ,&nbsp;Jianlin Pan ,&nbsp;Weibing Guan ,&nbsp;Yongxu Cheng ,&nbsp;Jun Zhou ,&nbsp;Xuan Fujun","doi":"10.1016/j.aquaculture.2024.741870","DOIUrl":"10.1016/j.aquaculture.2024.741870","url":null,"abstract":"<div><div>This study comprehensively analyzed gene expression differences between offsprings from varying parental sizes in the Chinese mitten crab (<em>Eriocheir sinensis</em>) during two early-life stages (fertilized eggs and megalopae) and corresponding their parental reproductive organs (testes, accessory glands, and ovaries). The mean ± SD (N=30) wet weights for the larger-sized male and female parental groups were 358.93 ± 4.93 g and 255.82 ± 3.45 g, respectively; For the smaller-sized groups were 142.55 ± 4.52 g and 93.97 ± 3.98 g. The findings indicate that offspring developmental advantages are predominantly inherited maternally, while resistance to stress and flavor advantages are primarily passed on from the paternal side.</div><div>In detail, it was observed that the ovaries of larger-sized female crabs expressed numerous genes related to hormone synthesis and metabolism, such as <em>CYP15A1 and CYP3A4</em>, which are involved in the biosynthesis and metabolism of juvenile hormones. Moreover, these genes play a crucial role in regulating the molting and metamorphosis processes, as well as the development of certain sensory abilities such as visual and tactile senses in the crabs, thereby aiding offspring in exhibiting superior physiological and structural characteristics during growth and development phases.</div><div>In terms of resistance to stress, our research identified that genes associated with oxidoreductase activity, such as <em>ALDH3A2 and PTGR2</em>, were significantly upregulated in the testes and accessory glands of larger-sized male crabs. These genes are involved in key biochemical pathways that defend against external stressors and pathogenic invasions, providing enhanced resistance foundations for the offspring. Additionally, our findings on flavor traits revealed that genes like <em>GLUL</em> and <em>AGXT2</em>, which were involved in lipid, carbohydrate, and amino acid metabolism, were highly expressed in the accessory glands of larger-sized crabs. These genes enhance the crabs' flavor by improving the synthesis and breakdown of key flavor components, contributing to a richer taste profile.</div><div>This study systematically explores the potential molecular-level advantages of larger-sized offspring in development, stress resistance, and flavor, comparing these to the molecular characteristics of the reproductive organs and summarizing the genetic patterns that may suggest these advantages.</div></div>","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741870"},"PeriodicalIF":3.9,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A granulocyte highly-expressed α2 adrenergic receptor promotes the expression of IL-17 and TNFs in the immune response of oyster Magallana gigas","authors":"Meijia Li ,&nbsp;Zhaoqun Liu ,&nbsp;Yage Liang ,&nbsp;Weilin Wang ,&nbsp;Chang Liu ,&nbsp;Chuanyan Yang ,&nbsp;Lingling Wang ,&nbsp;Linsheng Song","doi":"10.1016/j.aquaculture.2024.741884","DOIUrl":"10.1016/j.aquaculture.2024.741884","url":null,"abstract":"<div><div>Catecholamine, along with adrenergic receptor (ARs), plays a pivotal role in mediating the immune function of vertebrates under stressful environment. However, the immunomodulatory role of adrenergic receptors in invertebrates remains largely unknown, hindering the development of effective stress management strategies in invertebrate aquaculture. In the present study, an α2 type adrenergic receptor, designated as <em>Mg</em>α2AR, was identified in an economically important species, the Pacific oyster <em>Magallana gigas</em>. The <em>Mg</em>α2AR was consisted of seven transmembrane domains and one short carboxyl terminus. The mRNA transcript of <em>Mg</em>α2AR was expressed in haemocytes and all the examined tissues, with the highest expression level in haemocytes, particularly in granulocyte (9.28-fold of that in agranulocyte, <em>p</em> &lt; 0.05). By immunofluorescence analysis, <em>Mg</em>α2AR was found primarily localized in the cytoplasmic membrane of granulocytes. The mRNA expression of <em>Mg</em>α2AR in haemocytes increased significantly at 6 h, and peaked at 12 h (4.71-fold of that in control group, <em>p</em> &lt; 0.01) after LPS stimulation <em>in vivo</em>. After transfection and expression of <em>Mg</em>α2AR in HEK293T cells, a significant decrease in cAMP concentration, rather than in Ca²⁺ concentration, was observed upon treatment with the agonist NE (<em>p</em> &lt; 0.05), while the administration of the α2 adrenergic receptor antagonist (Ida) yielded opposite results. The expressions of <em>Mg</em>IL17–5, <em>Mg</em>TNF-1, and <em>Mg</em>TNF-2 in oyster haemocytes were also downregulated following treatment with α2AR antagonist Ida, which was 0.44-fold, 0.54-fold, and 0.32-fold of that in the NE+ LPS group (<em>p</em> &lt; 0.01), respectively. After <em>Mg</em>α2AR was knockdown by RNAi, the transcripts of <em>Mg</em>IL17–5, <em>Mg</em>TNF-1, and <em>Mg</em>TNF-2 significantly decreased. These results collectively suggested that the granulocytes highly-expressed <em>Mg</em>α2AR could induce the expressions of TNFs and IL-17 by reducing the intracellular cAMP level in the immune response of oysters. These findings provide a novel insight into the immunomodulatory role of adrenergic receptors in mollusks, and also offer valuable information for the development of effective stress management strategies in aquaculture.</div></div>","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741884"},"PeriodicalIF":3.9,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Docosahexaenoic acid alleviated liver lipid deposition and health damage induced by cholesterol accumulation in hybrid grouper (Epinephelus fuscoguttatus ♀ × E. lanceolatus ♂)","authors":"Qiming Huang ,&nbsp;Huiwen Zhang ,&nbsp;Xingbo Su,&nbsp;Yi Xiao,&nbsp;Jiaying Xie,&nbsp;Douglas R. Tocher,&nbsp;Fan Lin,&nbsp;Cuiying Chen,&nbsp;Shuqi Wang,&nbsp;Ruixin Li","doi":"10.1016/j.aquaculture.2024.741877","DOIUrl":"10.1016/j.aquaculture.2024.741877","url":null,"abstract":"<div><div>Cholesterol accumulation can be a critical pathological marker and, while, the cholesterol-lowering potential of docosahexaenoic acid (DHA) has been documented extensively in mammals, its effects in fish are unclear. The present study investigated the adverse effects of cholesterol accumulation on liver health, and evaluated DHA as a potential cholesterol-lowering agent to mitigate liver damage induced by high cholesterol (HC) intake in hybrid grouper (<em>Epinephelus fuscoguttatus ♀</em> <em>×</em> <em>E. lanceolatus ♂</em>). Grouper were fed either a control diet or an HC (1.6 %) diet supplemented with varying levels of DHA (0, 0.5, 1, 2 %) for eight weeks. The HC diet significantly increased condition factor (CF), mesenteric fat index (MFI), and lipid, cholesterol and triglyceride accumulation in liver. Supplementing the HC diet with 0.5 % DHA significantly reduced CF, MFI and liver lipid contents. Moreover, HC intake increased aspartate transaminase (AST) and alanine transaminase (ALT) activities in serum, and malondialdehyde (MDA) content and the expression of gene related to inflammatory responses and apoptosis in liver. In addition, HC intake significantly reduced mitochondrial biogenesis and total antioxidant capacity in liver. However, supplementing the HC diet with 0.5 % DHA significantly decreased liver cholesterol accumulation by inhibiting cholesterol synthesis and promoting cholesterol efflux, and significantly reduced liver triglyceride content by inhibiting the expression of genes associated with lipogenesis and lipid droplet formation. Furthermore, supplementation of the HC diet with 0.5 % DHA significantly reduced the activities of ALT and AST in serum, and MDA content and the expression of genes associated with inflammation, apoptosis and antioxidation in liver, and enhanced liver mitochondrial biogenesis. Overall, the results indicated that DHA supplementation mitigated liver cholesterol accumulation by inhibiting cholesterol synthesis and promoting cholesterol efflux, and enhanced mitochondrial function, boosted antioxidant capacity, and reduced inflammation in liver of grouper fed the HC diet, ultimately alleviating liver damage caused by cholesterol accumulation. The present study elucidated the detrimental effects of cholesterol accumulation on liver health in aquatic animals and proposed DHA as a potential intervention for mitigating health issues associated with cholesterol overload.</div></div>","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741877"},"PeriodicalIF":3.9,"publicationDate":"2024-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contact and non-contact physiological stress indicators in aquatic models: A review","authors":"Yun Sun ,&nbsp;Pengfei Liu ,&nbsp;Marija Brkić Bakarić ,&nbsp;Jiahao Yu ,&nbsp;Chuiyu Kong ,&nbsp;Xiaoshuan Zhang","doi":"10.1016/j.aquaculture.2024.741830","DOIUrl":"10.1016/j.aquaculture.2024.741830","url":null,"abstract":"<div><h3>Background</h3><div>Aquatic animals, including marine and riverine species, aquaculture varieties, and others, can experience a range of physiological and behavioral stress responses when exposed to various stressors in their living environments or during transportation. Therefore, real-time monitoring and evaluation of the stress state in aquatic animals are of great significance for ensuring their health, assessing quality status, and optimizing breeding and transportation conditions.</div></div><div><h3>Scope and approach</h3><div>The paper analyzes the methods for measuring physiological stress in aquatic animals under adverse conditions and innovatively proposes a novel classification method that divides the measurement approaches into contact-based and non-contact-based. It also reviews the key methods and technologies for stress signal processing and vitality status assessment. Additionally, we conduct a systematic analysis and discussion on the dynamic modeling of quality status.</div></div><div><h3>Key findings and conclusions</h3><div>This paper concludes by summarizing in the field of stress characteristic detection in aquatic animals, methods have gradually evolved from traditional rigid, single-scale detection to more flexible and multi-scale sensing approaches. Concurrently, stress detection technologies have shifted from focusing on single stress indicators to a comprehensive assessment of multiple stress indicators. Additionally, modeling methods for vitality and quality are developing toward multi-state analysis that integrates various influencing factors and multiple methodologies. The hypothesis is proposed and verified in this paper, which provides a model and future direction for the development of this field.</div></div>","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741830"},"PeriodicalIF":3.9,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Genetic diversity and genetic structure in successive mass selected generations of tetraploid Pacific oysters (Crassostrea gigas), diploid Portuguese oysters (C. angulata) and their allotriploid oysters","authors":"Haitao Ma ,&nbsp;Yanping Qin ,&nbsp;Yinjie Zhang ,&nbsp;Weitao Wan ,&nbsp;Jingyue Huang ,&nbsp;Na Mi ,&nbsp;Zhen Zhao ,&nbsp;Zhongyu Wang ,&nbsp;Jiangwei Li ,&nbsp;Jun Li ,&nbsp;Ziniu Yu ,&nbsp;Yuehuan Zhang","doi":"10.1016/j.aquaculture.2024.741876","DOIUrl":"10.1016/j.aquaculture.2024.741876","url":null,"abstract":"<div><div>In bivalve aquaculture, tetraploids are commonly used to generate sterile triploids for commercial aquaculture. We obtained the allotriploid population (tetraploid <em>C. gigas</em> ♂ × diploid <em>C. angulata</em> ♀) through the hybridization of tetraploid male <em>C. gigas</em> with diploid female <em>C. angulata</em> for the first time. However, the genetic diversity and genetic structure in successive mass selected generations of tetraploid <em>C. gigas</em>, diploid <em>C. angulata</em> and their allotriploid offspring are currently unknown. In this study, nine polymorphic microsatellite markers were used to evaluate their genetic diversity and genetic structure. The trend of reduced genetic diversity was recorded in successive generations of mass selected tetraploid <em>C. gigas</em> and diploid <em>C. angulata</em>. However, the diversity of the allotriploid population was significantly higher than that of the male parent population and the female parent population. This indicates that the hybridization technique of tetraploid <em>C. gigas</em> + diploid <em>C. angulata</em> to produce triploids is beneficial for increasing the genetic diversity of the hybrid triploid. Little genetic differentiation was found within tetraploid <em>C. gigas</em> and diploid <em>C. angulata</em> (except A3, the third generation of <em>C. angulata</em>), which is most likely caused by the insignificant genetic structure of the selected lines. The large genetic differences between tetraploid <em>C. gigas</em> and diploid <em>C. angulata</em> are caused by subspecies differences and ploidy difference. In addition, allotriploids were found to be more closely related to the female population, suggesting that this genetic relationship is more consistent with phenotypic traits. The findings of this study offer useful information for further genetic improvement of oyster polyploidy breeding.</div></div>","PeriodicalId":8375,"journal":{"name":"Aquaculture","volume":"596 ","pages":"Article 741876"},"PeriodicalIF":3.9,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142663260","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}