Pub Date : 2025-08-18DOI: 10.1016/j.aaf.2025.08.003
Han Chen , Yong Zhang , Muhammad Shahdat Hossain , Xinjing Du , Xin Wang , Siliang Yuan , Yaqi Liu , Jingcheng Dai , Dongru Qiu
Many aquatic animals undergo sex changes during their lifetime. Swamp eels (Monopterus albus) are typically protogynous freshwater fish, widely cultured in Asia. However, the impact of the sex transformation process on gut microbiota remains poorly understood. In this study, we measured the morphological data and hormone levels of swamp eels and subsequently analyzed the intestinal microbiota at different stages of sexual development. We found significant differences in the richness of intestinal microbiota between males and females. Specifically, a remarkably high abundance of Firmicutes was observed in female M. albus, while the abundance of Bacteroidetes and Fusobacteria was significantly increased in males. Additionally, Cetobacterium was the primary component of Fusobacteria detected in male swamp eels. Furthermore, network analysis indicated that the intestinal microbiota of males exhibited higher complexity and stability. PICRUSt analysis suggested that microbiota alterations may contribute to differential individual metabolisms, including energy metabolism, glycan biosynthesis and metabolism, membrane transport, and cell motility. These results suggest that intestinal microbiota composition varies with sexual phenotype in M. albus and may provide insight into microbial dynamics during sex reversal.
{"title":"Dynamic shifts of intestinal microbiota during sex reversal in swamp eels (Monopterus albus)","authors":"Han Chen , Yong Zhang , Muhammad Shahdat Hossain , Xinjing Du , Xin Wang , Siliang Yuan , Yaqi Liu , Jingcheng Dai , Dongru Qiu","doi":"10.1016/j.aaf.2025.08.003","DOIUrl":"10.1016/j.aaf.2025.08.003","url":null,"abstract":"<div><div>Many aquatic animals undergo sex changes during their lifetime. Swamp eels (<em>Monopterus albus</em>) are typically protogynous freshwater fish, widely cultured in Asia. However, the impact of the sex transformation process on gut microbiota remains poorly understood. In this study, we measured the morphological data and hormone levels of swamp eels and subsequently analyzed the intestinal microbiota at different stages of sexual development. We found significant differences in the richness of intestinal microbiota between males and females. Specifically, a remarkably high abundance of <em>Firmicutes</em> was observed in female <em>M. albus</em>, while the abundance of <em>Bacteroidetes</em> and <em>Fusobacteria</em> was significantly increased in males. Additionally, <em>Cetobacterium</em> was the primary component of <em>Fusobacteria</em> detected in male swamp eels. Furthermore, network analysis indicated that the intestinal microbiota of males exhibited higher complexity and stability. PICRUSt analysis suggested that microbiota alterations may contribute to differential individual metabolisms, including energy metabolism, glycan biosynthesis and metabolism, membrane transport, and cell motility. These results suggest that intestinal microbiota composition varies with sexual phenotype in <em>M. albus</em> and may provide insight into microbial dynamics during sex reversal.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 341-350"},"PeriodicalIF":0.0,"publicationDate":"2025-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842294","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}
Pub Date : 2025-08-08DOI: 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.
{"title":"Evaluation of flesh quality and antioxidant responses in grow-out largemouth bass (Micropterus salmoides) with novel protein substitutes","authors":"Muhammad Rizwan , Lukuan Li , Gang Yang, Zhen Zhang, Chunfang Wang","doi":"10.1016/j.aaf.2025.06.002","DOIUrl":"10.1016/j.aaf.2025.06.002","url":null,"abstract":"<div><div>The present research evaluated the impact of various novel protein sources, including <em>Tenebrio molitor</em> (TM), cottonseed protein concentrate (CSM), <em>Clostridium autoethanogenum</em> (CAP), and <em>Chlorella vulgaris</em> (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 (<em>P ></em> 0.05) among groups, while the ChM diet increased GSH-Px activity (<em>P <</em> 0.05), and the CSM diet elevated MDA levels (<em>P <</em> 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 (<em>P ></em> 0.05). TM groups had lower n-3 PUFA content than FM (<em>P <</em> 0.05), and ChM had higher n-6 PUFA content than FM (<em>P <</em> 0.05). Novel proteins reduced the n-3/n-6 PUFA ratio than FM (<em>P <</em> 0.05) with no differences among treatments (<em>P ></em> 0.05). The novel protein groups also had a significantly lower n-3/n-6 PUFA ratio than FM (<em>P <</em> 0.05). The transcript analysis indicated that the ChM group upregulated the expression of <em>myf5, myod,</em> and <em>myog</em>, while the diets downregulated the expression of <em>mstn</em>. 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.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 310-322"},"PeriodicalIF":0.0,"publicationDate":"2025-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842299","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}
Pub Date : 2025-08-07DOI: 10.1016/j.aaf.2025.07.002
Liting Wu , Jianmin Ye , Jun Li
Innate immunity in fish is critically important for preventing the entry of pathogenic microorganisms by adeptly recognizing pathogen-associated molecular patterns (PAMPs) through pattern recognition receptors (PRRs). Concurrently, the adaptive immune response equips the vertebrate immune system to identify and retain memory of specific pathogens, thereby facilitating enhanced secondary responses upon re-exposure. Antigen-presenting cells (APCs) are integral to this process, as they recognize antigens via mechanisms including PRRs, internalize them, and process these antigens for presentation to T cells. This interaction triggers the activation of both T cells and B cells, initiating a robust priming of the adaptive immune system and establishing a functional bridge between innate and adaptive immunity. Antigen presentation serves as a pivotal mechanism for T cell activation and B cell differentiation, thereby leading to the establishment of effective antimicrobial protection. Vaccination of fish is of paramount importance for preventing specific infectious diseases and is economically and environmentally essential for the development of a sustainable fish aquaculture industry. The design of efficacious vaccines necessitates the establishment of long-term protection against specific antigenic challenges, with APCs occupying a central role in this endeavor. This review summarizes the most recent studies on fish antigen presentation pathways and elucidates the mechanisms involved in the recognition, processing, and presentation of antigens by APCs, triggering activation of T cells. Moreover, this review highlights recent findings concerning immune regulatory factors that activate adaptive immunity, including adjuvants and immunostimulants, providing the prospects for fish vaccine applications. A comprehensive understanding of how fish APCs detect and respond to antigens will have profound implications for the future development of tailored vaccination strategies and the rational design of interventions against infectious diseases impacting the commercial aquaculture sector.
{"title":"The linkage between innate and adaptive immunity: Recent advances in antigen recognition, processing, and presentation in fish","authors":"Liting Wu , Jianmin Ye , Jun Li","doi":"10.1016/j.aaf.2025.07.002","DOIUrl":"10.1016/j.aaf.2025.07.002","url":null,"abstract":"<div><div>Innate immunity in fish is critically important for preventing the entry of pathogenic microorganisms by adeptly recognizing pathogen-associated molecular patterns (PAMPs) through pattern recognition receptors (PRRs). Concurrently, the adaptive immune response equips the vertebrate immune system to identify and retain memory of specific pathogens, thereby facilitating enhanced secondary responses upon re-exposure. Antigen-presenting cells (APCs) are integral to this process, as they recognize antigens via mechanisms including PRRs, internalize them, and process these antigens for presentation to T cells. This interaction triggers the activation of both T cells and B cells, initiating a robust priming of the adaptive immune system and establishing a functional bridge between innate and adaptive immunity. Antigen presentation serves as a pivotal mechanism for T cell activation and B cell differentiation, thereby leading to the establishment of effective antimicrobial protection. Vaccination of fish is of paramount importance for preventing specific infectious diseases and is economically and environmentally essential for the development of a sustainable fish aquaculture industry. The design of efficacious vaccines necessitates the establishment of long-term protection against specific antigenic challenges, with APCs occupying a central role in this endeavor. This review summarizes the most recent studies on fish antigen presentation pathways and elucidates the mechanisms involved in the recognition, processing, and presentation of antigens by APCs, triggering activation of T cells. Moreover, this review highlights recent findings concerning immune regulatory factors that activate adaptive immunity, including adjuvants and immunostimulants, providing the prospects for fish vaccine applications. A comprehensive understanding of how fish APCs detect and respond to antigens will have profound implications for the future development of tailored vaccination strategies and the rational design of interventions against infectious diseases impacting the commercial aquaculture sector.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 1","pages":"Pages 1-10"},"PeriodicalIF":0.0,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145651865","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}
Pub Date : 2025-08-07DOI: 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.
{"title":"Fishery products consumption: Evidence of persistence and trends in 25 OECD countries","authors":"Sakiru Adebola Solarin , Carmen Lafuente , Luis Alberiko Gil-Alana , María Jesús González-Blanch","doi":"10.1016/j.aaf.2025.07.003","DOIUrl":"10.1016/j.aaf.2025.07.003","url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 2","pages":"Pages 375-383"},"PeriodicalIF":0.0,"publicationDate":"2025-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145842295","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}
Pub Date : 2025-08-06DOI: 10.1016/j.aaf.2025.06.003
Neydson Silva Barbosa , Gênison Carneiro da Silva , Maria Angélica da Silva , Vivian Costa Vasconcelos , Roberta Borda Soares , Silvio Peixoto , Valdemir Queiroz de Oliveira , Giovanni Sampaio Gonçalves , Karina Ribeiro , Juliana Ferreira dos Santos , Luis Otavio Brito
This study aimed to evaluate the Lithothamnium organic mineral in the diets of Penaeus vannamei in low-salinity water with a synbiotic system. Two diets were formulated by partially replacing inorganic minerals (calcium, magnesium, and potassium) with a commercial source of Lithothamnium at levels of 2% (LT2) and 4% (LT4) per kg of diet, and two more diets were prepared using the same levels: 2% (CTLT2) and 4% (CTLT4) of Lithothamnium per kg of diet, fixed onto the pellets using a commercial binder. The experiment was conducted for 50 days with a stocking density of 50 shrimps (3.1 g) per m2 in a low-water salinity synbiotic system. Different doses and application forms affected the activities of digestive enzymes (trypsin, chymotrypsin, leucine aminopeptidase, amylase, and lipase) in the shrimp hepatopancreas. The oxidative stress enzymes did not differ significantly between the times analyzed, but MDA at 25 days of culture showed different values between LT2 and LT4 treatments compared to CTLT4. The shrimp's proximate and mineral composition showed that the concentration of lipids was lower in the CTLT2 and CTLT4 treatments, while the concentration of calcium was higher in the CTLT4 treatment. The LT2 treatment has a significant difference in shrimp performance (final weight, weekly growth, yield, and FCR) and a higher return on investment (34.26) compared to the other treatments and the control. Based on these results, the Lithothamnium organic mineral addition in diets for Penaeus vannamei for optimal growth was 2% addition (LT2) in the shrimp feed.
{"title":"Effects of dietary Lithothamnium organic mineral on Pacific white shrimp, Penaeus vannamei, raised in low salinity water synbiotic system","authors":"Neydson Silva Barbosa , Gênison Carneiro da Silva , Maria Angélica da Silva , Vivian Costa Vasconcelos , Roberta Borda Soares , Silvio Peixoto , Valdemir Queiroz de Oliveira , Giovanni Sampaio Gonçalves , Karina Ribeiro , Juliana Ferreira dos Santos , Luis Otavio Brito","doi":"10.1016/j.aaf.2025.06.003","DOIUrl":"10.1016/j.aaf.2025.06.003","url":null,"abstract":"<div><div>This study aimed to evaluate the <em>Lithothamnium</em> organic mineral in the diets of <em>Penaeus vannamei</em> in low-salinity water with a synbiotic system. Two diets were formulated by partially replacing inorganic minerals (calcium, magnesium, and potassium) with a commercial source of <em>Lithothamnium</em> at levels of 2% (LT2) and 4% (LT4) per kg of diet, and two more diets were prepared using the same levels: 2% (CTLT2) and 4% (CTLT4) of <em>Lithothamnium</em> per kg of diet, fixed onto the pellets using a commercial binder. The experiment was conducted for 50 days with a stocking density of 50 shrimps (3.1 g) per m<sup>2</sup> in a low-water salinity synbiotic system. Different doses and application forms affected the activities of digestive enzymes (trypsin, chymotrypsin, leucine aminopeptidase, amylase, and lipase) in the shrimp hepatopancreas. The oxidative stress enzymes did not differ significantly between the times analyzed, but MDA at 25 days of culture showed different values between LT2 and LT4 treatments compared to CTLT4. The shrimp's proximate and mineral composition showed that the concentration of lipids was lower in the CTLT2 and CTLT4 treatments, while the concentration of calcium was higher in the CTLT4 treatment. The LT2 treatment has a significant difference in shrimp performance (final weight, weekly growth, yield, and FCR) and a higher return on investment (34.26) compared to the other treatments and the control. Based on these results, the <em>Lithothamnium</em> organic mineral addition in diets for <em>Penaeus vannamei</em> for optimal growth was 2% addition (LT2) in the shrimp feed.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 1","pages":"Pages 140-151"},"PeriodicalIF":0.0,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145651940","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}
Pub Date : 2025-07-29DOI: 10.1016/j.aaf.2025.06.005
Einar Ringø
As the production of fish and shellfish is increasing, and the price of fishmeal is high cheaper suitable alternatives must be evaluated. Spirulina (Arthrospira), a filamentous blue-green microalgae, reported worldwide in fresh and marine waters, could be an alternative protein- and vitamins source. According to the Web of Science using the key words Spirulina and aquaculture 640 studies have been published on the topic since the first study was published by Stanley and Jones in 1976. Some microalgae including Spirulina contain several bioactive phytochemicals that exhibit anti-inflammatory, antioxidant, and immunomodulatory properties. Based on this, numerous studies have revealed that the supplementation of Spirulina to several fish and shellfish species improve growth performance, enhance cellular and humoral immunities, modulate the gut microbiota composition and improve disease resistance towards pathogenic infection (Vibrio alginolyticus, Vibrio harveyi, Aeromonas hydrophila and Aeromonas sobria). This review article evaluates the supplementation of Spirulina as a functional feed additive in sustainable fish and shellfish aquaculture.
随着鱼类和贝类产量的增加，以及鱼粉价格的上涨，必须评估更便宜的合适替代品。螺旋藻（节肢螺旋藻）是一种丝状蓝绿色微藻，在淡水和海水中都有报道，可以作为蛋白质和维生素的替代来源。根据Web of Science使用的关键词螺旋藻和水产养殖，自Stanley和Jones在1976年发表第一项研究以来，已经发表了640项关于该主题的研究。包括螺旋藻在内的一些微藻含有几种具有抗炎、抗氧化和免疫调节特性的生物活性植物化学物质。基于此，大量研究表明，在几种鱼类和贝类中添加螺旋藻可以改善生长性能，增强细胞和体液免疫，调节肠道菌群组成，提高对致病性感染（溶藻弧菌、哈维弧菌、嗜水气单胞菌和温和气单胞菌）的抗病能力。本文综述了螺旋藻作为一种功能性饲料添加剂在鱼贝类可持续养殖中的应用。
{"title":"Spirulina (Arthrospira), as feed additive in finfish and shellfish aquaculture","authors":"Einar Ringø","doi":"10.1016/j.aaf.2025.06.005","DOIUrl":"10.1016/j.aaf.2025.06.005","url":null,"abstract":"<div><div>As the production of fish and shellfish is increasing, and the price of fishmeal is high cheaper suitable alternatives must be evaluated. <em>Spirulina</em> (<em>Arthrospira</em>), a filamentous blue-green microalgae, reported worldwide in fresh and marine waters, could be an alternative protein- and vitamins source. According to the Web of Science using the key words <em>Spirulina</em> and aquaculture 640 studies have been published on the topic since the first study was published by Stanley and Jones in 1976. Some microalgae including <em>Spirulina</em> contain several bioactive phytochemicals that exhibit anti-inflammatory, antioxidant, and immunomodulatory properties. Based on this, numerous studies have revealed that the supplementation of <em>Spirulina</em> to several fish and shellfish species improve growth performance, enhance cellular and humoral immunities, modulate the gut microbiota composition and improve disease resistance towards pathogenic infection (<em>Vibrio alginolyticus</em>, <em>Vibrio harveyi</em>, <em>Aeromonas hydrophila</em> and <em>Aeromonas sobria</em>). This review article evaluates the supplementation of <em>Spirulina</em> as a functional feed additive in sustainable fish and shellfish aquaculture.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"10 6","pages":"Pages 931-944"},"PeriodicalIF":0.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145289937","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}
Pub Date : 2025-07-29DOI: 10.1016/j.aaf.2025.05.001
{"title":"Corrigendum regarding missing ethics statement, consent to participate statements and declaration of competing interest in articles previously published in Volume 10","authors":"","doi":"10.1016/j.aaf.2025.05.001","DOIUrl":"10.1016/j.aaf.2025.05.001","url":null,"abstract":"","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"10 6","pages":"Page 1106"},"PeriodicalIF":0.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145290105","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}
Pub Date : 2025-07-29DOI: 10.1016/j.aaf.2025.06.004
Achyutham Hotha, C.B. Ganesh
Gamma-aminobutyric acid (GABA) regulates several physiological, neuroendocrine, and behavioural functions, yet the specific role of its receptors in the hypothalamic-pituitary-testis (HPT) axis remains unclear in teleosts. We investigated the effects of muscimol (MUSC, a GABAA receptor agonist) and baclofen (BAC, a GABAB receptor agonist) on the HPT axis in the male black molly Poecilia sphenops. Administration of 0.05 μg MUSC on alternate days for 21 days upregulated gonadotropin-releasing hormone-I (GnRH-I) mRNA levels in the preoptic-hypothalamus, whereas they were downregulated in 0.5 or 5 μg MUSC-treated groups. The GnRH-I mRNA levels were unaltered following treatment with 5 or 10 μg BAC, but they were upregulated in 50 μg BAC-treated fish. The luteinizing hormone-β (LH-β) mRNA levels were unaltered following MUSC or BAC treatment across all doses. The numbers of all germ cell types were significantly decreased in 5 μg MUSC-treated fish concomitant with significantly lower levels of testicular 11-ketotestosterone (11-KT). On the other hand, treatment with 50 μg BAC caused a significant increase in the majority of the germ cells and testicular levels of 11-KT compared to controls. Furthermore, in vitro 11-KT levels in the testis were significantly increased in MUSC + human chorionic gonadotropin (hCG)-treated fish compared to those of the MUSC-alone group; however, a similar treatment of BAC + hCG did not attenuate the inhibitory effect of BAC-alone treatment. These findings suggest that GABAA and GABAB receptor agonists produce differential effects on the HPT axis of the black molly. In particular, MUSC suppresses the GnRH-I mRNA expression and spermatogenesis process at higher doses, whereas BAC promotes these processes at high concentration.
{"title":"GABAA and GABAB receptor agonists differentially regulate the reproductive axis in the black molly Poecilia sphenops","authors":"Achyutham Hotha, C.B. Ganesh","doi":"10.1016/j.aaf.2025.06.004","DOIUrl":"10.1016/j.aaf.2025.06.004","url":null,"abstract":"<div><div>Gamma-aminobutyric acid (GABA) regulates several physiological, neuroendocrine, and behavioural functions, yet the specific role of its receptors in the hypothalamic-pituitary-testis (HPT) axis remains unclear in teleosts. We investigated the effects of muscimol (MUSC, a GABA<sub>A</sub> receptor agonist) and baclofen (BAC, a GABA<sub>B</sub> receptor agonist) on the HPT axis in the male black molly <em>Poecilia sphenops.</em> Administration of 0.05 μg MUSC on alternate days for 21 days upregulated gonadotropin-releasing hormone-I (GnRH-I) mRNA levels in the preoptic-hypothalamus, whereas they were downregulated in 0.5 or 5 μg MUSC-treated groups. The GnRH-I mRNA levels were unaltered following treatment with 5 or 10 μg BAC, but they were upregulated in 50 μg BAC-treated fish. The luteinizing hormone-β (LH-β) mRNA levels were unaltered following MUSC or BAC treatment across all doses. The numbers of all germ cell types were significantly decreased in 5 μg MUSC-treated fish concomitant with significantly lower levels of testicular 11-ketotestosterone (11-KT). On the other hand, treatment with 50 μg BAC caused a significant increase in the majority of the germ cells and testicular levels of 11-KT compared to controls. Furthermore, <em>in vitro</em> 11-KT levels in the testis were significantly increased in MUSC + human chorionic gonadotropin (hCG)-treated fish compared to those of the MUSC-alone group; however, a similar treatment of BAC + hCG did not attenuate the inhibitory effect of BAC-alone treatment. These findings suggest that GABA<sub>A</sub> and GABA<sub>B</sub> receptor agonists produce differential effects on the HPT axis of the black molly. In particular, MUSC suppresses the GnRH-I mRNA expression and spermatogenesis process at higher doses, whereas BAC promotes these processes at high concentration.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 1","pages":"Pages 71-83"},"PeriodicalIF":0.0,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145651870","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}
Pub Date : 2025-07-05DOI: 10.1016/j.aaf.2025.05.002
Ricardo Moura , Nuno Pessanha Santos , Maria Eduarda Catarino
Fishing is a significant global food source, providing protein for millions of people. The Food and Agriculture Organization (FAO) is committed to ensuring access to high-quality food, reducing hunger, and promoting sustainable fisheries to address global population growth and hunger. However, illegal, unreported, and unregulated fishing poses a significant challenge, threatening marine biodiversity and food security. Portugal has the 10th largest Exclusive Economic Zone (EEZ), with waters around mainland Portugal, the Azores, and Madeira. This research focuses on the Azores region, known for its traditional multispecific fishery around the island slopes and seamounts. The region's fisheries face data scarcity issues and complicating effective management. By combining Vessel Monitoring System (VMS) records from 2016 to 2022 and Portuguese Navy (PoN) Fiscalization Reports (FISCREP) from 2015 to 2022, it was possible to use appropriate metrics to characterize the fishing effort and analyze the effectiveness of the inspections conducted in the Azores EEZ. The Total Boat-Meter (TBM) metric combines the number and length of boats to quantify the fishing effort better. The analysis shows that the fishing effort in the protected areas is very high, highlighting the pressure on the protected ecosystems. The findings aim to assist regulatory institutions and researchers in assessing fishing pressure and promoting sustainable fisheries management in the Azores to preserve marine ecosystems.
{"title":"Fishing effort and enforcement in the Azores Marine Protected Areas: How prevalent is illegal fishing?","authors":"Ricardo Moura , Nuno Pessanha Santos , Maria Eduarda Catarino","doi":"10.1016/j.aaf.2025.05.002","DOIUrl":"10.1016/j.aaf.2025.05.002","url":null,"abstract":"<div><div>Fishing is a significant global food source, providing protein for millions of people. The Food and Agriculture Organization (FAO) is committed to ensuring access to high-quality food, reducing hunger, and promoting sustainable fisheries to address global population growth and hunger. However, illegal, unreported, and unregulated fishing poses a significant challenge, threatening marine biodiversity and food security. Portugal has the 10th largest Exclusive Economic Zone (EEZ), with waters around mainland Portugal, the Azores, and Madeira. This research focuses on the Azores region, known for its traditional multispecific fishery around the island slopes and seamounts. The region's fisheries face data scarcity issues and complicating effective management. By combining Vessel Monitoring System (VMS) records from 2016 to 2022 and Portuguese Navy (PoN) Fiscalization Reports (FISCREP) from 2015 to 2022, it was possible to use appropriate metrics to characterize the fishing effort and analyze the effectiveness of the inspections conducted in the Azores EEZ. The Total <em>Boat-Meter</em> (TBM) metric combines the number and length of boats to quantify the fishing effort better. The analysis shows that the fishing effort in the protected areas is very high, highlighting the pressure on the protected ecosystems. The findings aim to assist regulatory institutions and researchers in assessing fishing pressure and promoting sustainable fisheries management in the Azores to preserve marine ecosystems.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"11 1","pages":"Pages 193-208"},"PeriodicalIF":0.0,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145651944","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}
Pub Date : 2025-07-03DOI: 10.1016/j.aaf.2025.04.002
Keng Chin Lim , Fatimah Md Yusoff , Fatin M.I. Natrah , Mahanama De Zoysa , Ina Salwany Md Yasin , Jasmin Yaminudin , Murni Karim
Although the aquaculture industry has undergone monumental development worldwide, the ever-present threats of infectious diseases have become a constraining factor, imperiling its sustainability. Antimicrobial resistance (AMR) remains a real menace to industrial aquaculture due to the careless adoption of preventive therapies (antimicrobial therapeutic drugs) to forestall disease outbreaks in aquatic food production. Suitable strategies, or at least supplementary measures, should therefore be developed to curb the emergence and widespread transmission of AMR. Vaccination represents one of the primary options to substantially mitigate the economic damages imposed by emerging infectious diseases on global aquaculture; nevertheless, the availability of commercial aquatic vaccines is usually limited, and many vaccines only confer minimal or poor protection against infections (during the early stages of animal development). Accordingly, a large body of research has been enthusiastically exploring alternate approaches for managing animal health challenges. These efforts have led to the establishment of various biocontrol strategies, such as the versatile use of high-value functional ingredients (e.g., probiotics, prebiotics, synbiotics, paraprobiotics, postbiotics, and phytogenics), phage therapy, and quorum-sensing interference (QSI), to promote the health and welfare of farmed aquatic species in a responsive or preventative manner. This review article addresses the state-of-the-art pertinent to biological control as an eco-friendly green approach for aquatic disease management, paving the route to a sustainable blue revolution. The potential biological mechanisms of these strategies are also described, along with the impediments to scientific progress and topics that merit further investigation.
{"title":"Biological strategies in aquaculture disease management: Towards a sustainable blue revolution","authors":"Keng Chin Lim , Fatimah Md Yusoff , Fatin M.I. Natrah , Mahanama De Zoysa , Ina Salwany Md Yasin , Jasmin Yaminudin , Murni Karim","doi":"10.1016/j.aaf.2025.04.002","DOIUrl":"10.1016/j.aaf.2025.04.002","url":null,"abstract":"<div><div>Although the aquaculture industry has undergone monumental development worldwide, the ever-present threats of infectious diseases have become a constraining factor, imperiling its sustainability. Antimicrobial resistance (AMR) remains a real menace to industrial aquaculture due to the careless adoption of preventive therapies (antimicrobial therapeutic drugs) to forestall disease outbreaks in aquatic food production. Suitable strategies, or at least supplementary measures, should therefore be developed to curb the emergence and widespread transmission of AMR. Vaccination represents one of the primary options to substantially mitigate the economic damages imposed by emerging infectious diseases on global aquaculture; nevertheless, the availability of commercial aquatic vaccines is usually limited, and many vaccines only confer minimal or poor protection against infections (during the early stages of animal development). Accordingly, a large body of research has been enthusiastically exploring alternate approaches for managing animal health challenges. These efforts have led to the establishment of various biocontrol strategies, such as the versatile use of high-value functional ingredients (e.g., probiotics, prebiotics, synbiotics, paraprobiotics, postbiotics, and phytogenics), phage therapy, and quorum-sensing interference (QSI), to promote the health and welfare of farmed aquatic species in a responsive or preventative manner. This review article addresses the state-of-the-art pertinent to biological control as an eco-friendly green approach for aquatic disease management, paving the route to a sustainable blue revolution. The potential biological mechanisms of these strategies are also described, along with the impediments to scientific progress and topics that merit further investigation.</div></div>","PeriodicalId":36894,"journal":{"name":"Aquaculture and Fisheries","volume":"10 5","pages":"Pages 743-763"},"PeriodicalIF":0.0,"publicationDate":"2025-07-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144878349","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}
扫码关注我们
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号