The body color of aquatic products is a key indicator that aquaculture practitioners use to evaluate health status and consumers use to judge quality. Carotenoids are natural pigments that are mainly pigmented compounds responsible for red, yellow, and orange coloration. They have important functions, such as immune and antioxidant modulation. Recently, a novel strain of Pelodiscus sinensis with bright

Protein arginine methyltransferases (PRMT6) has been shown to negatively regulate interferon (IFN) production in mammals, however, the role of teleost PRMT6 in IFN signaling remains largely unknown. In our previous study, black carp (Mylopharyngodon piceus) PRMT6 (bcPRMT6) has been identified to inhibit bcTBK1/bcIRF3 cascade. In this study, bcIRF3-induced transcription of bcIFNa, bcIFNb, bcp50 and

Histological and histochemical changes during oocyte development were evaluated in order to establish a model for better understanding nutrient dynamics throughout vitellogenesis and overall penaeid reproduction. Samples of Xiphopenaeus kroyeri females (n = 587) at different stages of gonadal maturation were subjected to histological and histochemical analysis for the identification of neutral polysaccharides

The ectoparasites Dactylogyrus lamellatus usually infest fish gills and cause severe damage to the gill tissues of the host. However, whether the ectoparasites influence gut microbiota is still unknown. In this study, gut microbiota combined with histopathological characteristics, biochemical parameters, and relative expression of immune-related genes were analyzed in grass carp severely infected (SI)

The main challenge in shrimp farming is the high prevalence of diseases caused by pathogenic bacteria from the Vibrionaceae family. Natural extracts enriched with prebiotic and antibacterial compounds have been proposed as alternatives to the controversial use of antibiotics. In this study, a flavonoid-enriched extract (11.54 ± 1.81 mg QE/g DW) obtained from Agave lechuguilla bagasse was evaluated

Early maturation of Atlantic salmon male postsmolts is undesirable in aquaculture due to its negative impact on growth, welfare and seawater adaptation, however it is an increasing problem under intensive rearing conditions. The effect of temperature and feeding ration on sexual maturation during the induction of smoltification was tested with a 3 × 2 factorial design including three temperatures (8

The farming of several species in aquaculture often produces pale coloured fish due to a deficiency in dietary carotenoid sources compared to their wild caught counterparts, resulting in the loss of market value and consumer acceptance. Supplementation of feed with astaxanthin as a carotenoid source has since been found to enhance red colouration in several important fish species. In this study, comparative

Selenium is a necessary trace element for animals, and it can improve the antioxidant capacity of a variety of cells. In this study, the antioxidant capacity of different concentrations of selenium nanoparticles (SeNPs) (0.1, 0.5, 1.5, and 4.5 mg/L) on Onychostoma macrolepis and Schizothorax prenanti sperm were explored during stored at 4 °C for 72 h. After 24 h, 0.5 mg/L SeNPs was more effective at

Flavobacterium psychrophilum can be a significant mortality source in hatcheries where trout and salmon (Family Salmonidae) are propagated and raised. Preventing F. psychrophilum outbreaks and controlling its spread in hatcheries is challenged by limited effectiveness of current therapeutics and lack of efficacious commercial vaccines. Consequently, one of the few available options to limit outbreaks

Singapore grouper iridovirus (SGIV) is one of the main pathogens that causes high mortality and substantial economic losses in the grouper aquaculture industry. Curcumin is a polyphenolic compound extracted from the traditional Chinese medicinal material, turmeric. In this study, we investigated the antiviral properties of curcumin against SGIV based on quantitative real-time PCR (qRT-PCR), western

Artemia nauplii are widely used as live preys for feeding early life-cycle stages of marine finfish and shrimp. However, a major drawback associated to using Artemia is their deficient nutritional value for marine larvae that is primarily linked to suboptimal levels of long-chain polyunsaturated fatty acids (LC-PUFA), essential nutrients that guarantee normal growth and development of animals. While

Recently, yellowtail kingfish (Seriola lalandi) is being cultured in recirculating aquaculture systems (RAS). Yellowtail kingfish have a poor faecal integrity, which makes the removal of faeces by traditional RAS technology difficult. Reducing the faecal waste load in RAS can be achieved by reducing the amount of faeces produced (e.g., increasing digestibility) and/or increasing the removal of faeces

Thermal delousing has become the most applied method for treatment against salmon lice. However, the temperature range used is strongly aversive for salmonids, and the method is associated with increased mortality. Treatment temperature × duration combinations should be tailored to maximise delousing efficiency and minimize welfare impacts on the host fish. We tested the detachment rate of sessile

Pseudomonas plecoglossicida is an important pathogenic bacterial species in aquaculture, causing visceral granulomas in large yellow croaker (Larimichthys crocea) and several other economically important fish species. The GacS/GacA is a two-component regulatory system (TCS) primarily found in Pseudomonads for its role in virulence, quorum sensing, and biofilm formation. To investigate the potential

Malic acid (MA) is one of the organic acids that has been less studied for its effects on fish growth performance and gut health. The present study aimed to assess the effects of dietary MA supplementation on growth performance, antioxidant and immunological parameters, and intestinal gene expressions in rainbow trout, Oncorhynchus mykiss. Fish with ~25 g body weight were randomly distributed into

A popular framing of Goodhart's Law states, “When a measure become a target, it ceases to be a good measure”. The extent to which this may be the case in the reporting of sea louse infestation on salmon farms is explored here. Due to the importance of controlling sea louse infestation on salmon farms, monitoring programmes are active in most salmon producing regions and, in many, a maximum allowable

Lymphocystis disease (LCD) is a benign viral disease characterized by the appearance of hypertrophic fibroblastic cells in the connective tissues of fish. In December 2021, a group of yellowbar angelfish (Pomacanthus maculosus Forsskål, 1775) which had significant mortalities (10%) and showed whitish nodules on the fins and skin, were packed in water-filled plastic bags, supplied with oxygen, and transported

The mangrove red snapper, Lutjanus argentimaculatus, is a marine fish of key economic and cultural importance in the Indo-Pacific region. It is now considered much more of an important aquaculture species than capture fisheries. The present study aimed to reveal the genetic structure of this candidate species from the Arabian Sea and Bay of Bengal using microsatellite markers. Twelve microsatellite

Cholesterol is an important essential nutrient for crustaceans. This experiment investigated the effects of dietary cholesterol on the osmoregulation, antioxidant defense, immune response and salinity stress resistance of Pacific white shrimp (Litopenaeus vannamei). Six diets (Chol 1.0, Chol 1.4, Chol 1.8, Chol 2.2, Chol 2.6, and Chol 3.0) with cholesterol levels of 0.1%, 0.14%, 0.18%, 0.22%, 0.26%

Deep learning (DL) is a cutting-edge technology that enables high-throughput phenotyping in aquaculture. The routine application of DL offers new opportunities for the genetic selection of appearance traits, especially those related to body shape. The criteria currently used for the trait selection of commercial interest, such as rapid growth and weight gain, can directly influence the animal's appearance

The feminization of green sunfish Lepomis cyanellus could expand their utility as a game fish or aquacultured species by preventing overcrowding and precocious reproduction in stocked systems. Feminization of green sunfish could also help elucidate information on their sex determination system. We report the feminization of green sunfish cohorts via oral administration of estradiol-17β (E2) during

Ammonia is one of the most significant environmental pollutants affecting aquatic animals under culture conditions; however, little is known about ammonia toxicity in marine gastropods. In this study, the effects of different total ammonia concentrations (0.0, 2.5, 5.0, 7.5, and 10.0 mg∙L−1 NH4Cl) on growth performance, tissue damage, antioxidant capacity, immune function, and body composition were

Cyprinid herpesvirus 2 (CyHV-2) is a highly contagious pathogen that causes herpesviral haematopoietic necrosis (HVHN) disease to goldfish, Carassius auratus and gibel carp, C. auratus gibelio. In this study, the virus persistence or latency in apparently healthy farmed gibel carp and reactivation in vitro were investigated. All of the freshly dissected kidney tissues of 42 individuals of asymptomatic

Catla (Catla catla) and silver carp (Hypophthalmichthys molitrix) are globally significant aquaculture species, primarily grown in polyculture. The objectives of the current study were to i) quantify genetic differences among founder populations (i.e. genetic groups) of family-based genetic improvement programs ii) estimate genetic parameters for harvest weight under different culture systems (i.e

Genomic selection has the potential to increase the rate of genetic gain in aquaculture breeding programs by enabling selection between and within families without phenotyping selection candidates. Due to the wide range of environments in which oysters are cultured, an industry-wide approach of multiple regional breeding programs has been suggested for Crassostrea sp. This necessitates genotyping large

The rapid expansion of aquaculture has led to increased demand for protein sources for feed production. Lipids and carbohydrates can serve as energy sources and induce a “protein-sparing” effect. However, excessive dietary lipids and carbohydrates may cause lipid accumulation in the liver, impair immune and antioxidant capacities, thus hidering the growth and meat quality of farmed fish. Bile acids

Feed efficiency (FE) is a critical phenotype for aquaculture sustainability, yet it is poorly understood at the molecular level. In this study, the molecular basis of FE was investigated using a multi-omics approach to integrate proteome-level data and metabolites associated with differences in feed efficiency. To achieve this, Chinook salmon (Oncorhynchus tshawytscha) were reared in seawater and the

Hypoxia has become a significant issue both in open aquatic environment and closed aquaculture system. Development of hypoxia-tolerant breeds is one of the practical strategies in further fish farming. In present study, the hybrid Pelteobagrus fulvidraco (PF) × Leiocassis longirostris (LL) was generated by artificial insemination. Both PF ♀ × LL ♂ and LL ♀ × PF ♂ could produce F1 offspring, assigned

A feeding experiment was carried out to compare the effects of dietary synthetic astaxanthin and Haematococcus pluvialis on growth, antioxidant capacity, immune response and hepato-morphology of Oncorhynchus mykiss under cage culture with flowing freshwater. Three isonitrogenous and isolipidic diets were formulated with or without synthetic astaxanthin and H. pluvialis and were administered to O. mykiss

The dried Haematococcus pluvialis (H. pluvialis) powder rich in astaxanthin is widely investigated as a promising feed additive or ingredient for improving growth, health, feed efficiency, and pigmentation of aquatic animals under the controlled laboratory conditions, whereas few studies have reported its practical application efficacy in shrimp aquaculture. Hence, this study aimed to evaluate the

Circular RNAs (circRNAs) are a class of widespread and diverse covalently closed circular endogenous RNAs that play pivotal roles in mediating immune regulation in mammals. However, the function and regulatory mechanisms of circRNAs in lower invertebrates are still far unidentified. In this study, we discovered a circRNA derived from AJAPscaffold1149: 133758|203,802 of Apostichopus japonicus genome

Exercise training can improve the growth performance, immunocompetence, and stress resistance of fish, even altering their physiological parameters and gene expression. Largemouth bass (Micropterus salmoides) that originally lived in rivers and lakes are now often raised in ponds without flowing water, leading to a lack of exercise. This study examined the effects of exercise training on largemouth

The mandarin fish (Siniperca chuatsi) is an important aquaculture fish. All-male mandarin fish culture has the advantages of higher profits, more uniform size and lower energy consumption of gonadal development. However, the lack of accurate sex-specific markers has hampered the all-male breeding of this species. Herein, we successfully adopted a next generation sequencing strategy to identify potential

Low water temperature is a prevailing abiotic stress which adversely impacts global shrimp growth and production. In this study, a high-density genetic linkage map of L. vannamei was constructed using double-digest restriction site-associated DNA sequencing (ddRAD-seq) with an F1 full-sib family mapping panel comprising 148 progenies and 2 parents. A total of 2528 single-nucleotide polymorphisms (SNPs)

The objectives of this research were to assess the genetic diversity, population structure, linkage disequilibrium and perform a genome-wide association study (GWAS) to search for single nucleotide polymorphisms (SNPs) that associate with the resistance of Pacific white shrimp (Litopenaeus vannamei) to White Spot Syndrome Virus (WSSV). The line here analyzed was formerly founded with animals originated

Nile tilapia, though a tropical species, is cultured throughout most subtropical regions of the globe, in areas with large seasonal thermal variations. The maintenance of sustained productivity during adverse environmental conditions, such as winter, is a growing area of research effort, including nutritional interventions and seasonal specific diets. The present study aimed at evaluating how the in

Dissolved oxygen (DO) saturation in the water is a crucial factor in fish performance and welfare. Exposure to low DO can affect a wide variety of functions such as metabolic rate and physiological adaptations including hematological, hormonal, biochemical and osmoregulatory alterations in blood and plasma. In the present study European sea bass, Dicentrarchus labrax and gilthead seabream, Sparus aurata

The supply of dissolved oxygen (DO) to salmon in sea cages depends on many interacting factors including biomass density, temperature and current speed. With other factors being equal, hypoxic conditions are more likely to arise in large cages compared to small. In this work, a mathematical model of DO in sea cages is used to analyse the effect of horizontal cage size in particular. It is shown and

An 8 weeks feeding trial and a cell culture were conducted to determine the effects of hypoxia and vitamin C (Vc) on muscle development of channel catfish (Ictalurus punctatus). In vivo, the channel catfish (average initial weight 14.50 ± 0.15 g) were divided into four groups, normoxia (DO 7.5 ± 0.5 mg/L) with 50 mg/kg of Vc (N50), hypoxia (DO 5.0 ± 0.5 mg/L) with 50 mg/kg of Vc (H50), hypoxia with

Artificial reproduction of pikeperch (Sander lucioperca) is characterized by the unpredictability of latency time (LT) as well as the variability of egg quality depending on the time of hormonal stimulation. To predict latency time and thus enhance fertilization outcomes, the present study evaluated whether in vitro maturation techniques could be utilized to assess the status of oocyte maturation competence

The long spined sea urchin Diadema antillarum was an abundant grazer on Caribbean coral reefs, until 1983–1984, when densities were reduced by ∼98% during a region wide die-off. Since then, there has been very little natural recovery of the species and interest is growing in applying aquaculture as a tool for population enhancement. In this study we optimized a new shaker bottle cultivation method

The aim of this study is to assess the feasibility of the genetic improvement of traits related to resistance to the monogenean ectoparasite Benedenia seriolae in Japanese yellowtail Seriola quinqueradiata. Resistance to benedeniosis (incidence of infection by Benedenia parasites) of individual sample fish was evaluated over two generations in long term field trials, as repeated counts of the number

The shrimp industry in Bangladesh is an important economic sector with growing demand, export potential, and employment opportunities. However, the industry is threatened by external and local production and market risks. Risk management strategies can be implemented through farming systems modification developing of different types of shrimp and prawn-based systems, although the adaptive capacity

Tilapia (Oreochromis niloticus) is a kind of worldwide farmed fish that is commercially cultured in more than a hundred nations. The tilapia dietary faba bean (Vicia faba L.) for 90– 120 d improves muscle quality such as higher muscle hardness and crispiness. However, faba bean contain a wide variety of antinutritional factors such as phenolics, tannins, trypsin inhibitor activity, and phytic acid

The recirculating pond aquaculture system (RPAS) consisted of culture ponds, a purification pond, inflow ditch, outflow pipe, ecological ditch, and electrically driven pump. The performance of RPAS on grass carp (Ctenopharyngodon idellus) was explored in this study. In both the RPAS and the traditional pond aquaculture system (TPAS), water quality, fish growth performance, muscle quality, and tissue

Akirins are highly conserved, small, nuclear proteins that have been recognized as key regulators of multiple gene expression patterns and play important roles in immune responses. Previous studies on Akirins have mainly focused on the model species Drosophila and mice, while there have been few studies on fish. In the present study, two Akirin genes, Akirin1 and Akirin2, were identified from Megalobrama

Giant freshwater prawn, Macrobrachium rosenbergii, is an important economically aquaculture species widely farmed in tropical and subtropical areas of the world. Infectious precocity virus (IPV) is a virus that results in slow growth and sexual precocity of farmed M. rosenbergii and causes significant economic losses. A TaqMan probe Quantitative Real-time PCR (qPCR) and a nested PCR assay for IPV detection

Lice shielding skirts are a preventative measure against salmon lice in Atlantic salmon farming. The skirt is wrapped around the top meters of the net cage to divert the current flow around the cage, and thereby keep the salmon lice out. Despite these skirts being used actively in Norwegian aquaculture for the past decade, there is no standardised way of using them, and therefore type, depth and operating

Feeding regime, which involve selection of appropriate diet and application of feed itself is a decisive factor in intensive, RAS-based production system – more so, for carnivorous fish culture. It is critical for the economics, resource (feed/nutrients) use efficiency and final profit yield. The present study examined different feeding strategies in juvenile pikeperch reared in RAS for growth performance

Snow trout (Schizothorax) is an important cold-water economic fish in Asian aquaculture, but it has some disadvantages, such as slow growth rate, weak resistance to white spot disease (Ichthyophthirius multifiliis) and high temperature, etc. In contrast, their sister genus, Percocypris, has stronger resistance to white spot disease and high temperature. Distant hybridization can integrate the advantages

Aquaculture is growing to meet the increasing demand for aquaculture products but is not free of environmental impacts. One solution is to improve how feed are formulated, limiting the environmental impact of fish production. Multiobjective (MO) formulation, which aims for a compromise between lower cost and lower environmental impacts, appears to be a promising solution to reduce the environmental

Pomegranate peel extract (PPE) has been widely identified as a rich source of therapeutically active phyto-compounds, known for their beneficial effects in aquaculturable species. In this context, a 60-day feeding trial was carried out to evaluate the effect of supplementation of pomegranate peel extract (PPE) on growth performance, haemato-immunological responses and cytokine gene expression in Labeo

MicroRNAs (miRNAs) are endogenous small non-coding RNAs consisted of 21–25 nucleotides that modulate the gene expression by binding to 3′ untranslated region (3′ UTR) of target messenger RNA (mRNA) at the post-transcriptional level. The miRNAs are well known to participate in various physiological processes including cellular differentiation, apoptosis, angiogenesis and immune responses. In particular

A 35-day experiment was conducted with a total of 105 rainbow trout (Oncorhynchus mykiss) with an average initial weight of 192.9 g, sampled over four time points (day 7, 14, 21, and 28) to study the relationship between respectively, δ13C in muscle, liver, and adipose fin and relative weight gain, when fed a diet based on plant C3 ingredients, with a lower level of δ13C compared to the baseline diet

The aim of this study was to investigate the anesthetic efficiency of coriander (Coriandrum sativum) and thyme (Origanum onites) essential oils at different concentrations (20, 50, 70, 100, 150, 200, 300, 400, 500, 600 mg L−1) on rainbow trout (Oncorhynchus mykiss). Additionally, the histopathological effects of essential oils were investigated on the fish tissues including gill, liver and kidney.

For sustainable aquaculture, the replacement of dietary fishmeal with plant protein is becoming more common because fishmeal resources are limited. However, in the case of carnivorous fish such as yellowtail (Seriola quinqueradiata), reducing the dietary fishmeal level often causes low feed intake. Improving feed intake is important in the use of a non- and low-fishmeal diet. However, little is known

The COVID-19 pandemic has wreaked havoc on the aquaculture and fisheries sector all around the world, with the impact being exacerbated in developing countries. This study is an endeavor to identify consequences of the COVID-19 on fisheries and aquaculture sectors based on primary data collected from Bangladesh as an empirical case study. The data were collected through face-to-face interviews with

Fish cell lines are important tools in many biological studies. Here, we established a new Japanese flounder brain (JFB) cell line from the brain tissue of the Japanese flounder (Paralichthys olivaceus), which was successfully sub-cultured for over 120 passages, and consisted predominantly of fibroblast-like cells. Sequencing of the actin gene confirmed that JFB cells were derived from the Japanese