The modulation of antioxidant responses and onset of oxidative stress is due to several factors, including temperature, diets, and hypoxia followed by re-oxygenation in several aerobic organisms including rotifers. In this context, the aims of this study were (1) to establish a protocol for evaluating in vivo ROS (reactive oxygen species) concentration in rotifer Brachionus plicatilis and (2) to determine

Molecular and immunological aspects of heterophyid infections in mullets are scanty. This study was initiated to identify heterophyid encysted metacercariae infecting gray mullet Mugil cephalus by morphological and molecular assays and to evaluate its immunological effects on infected mullets. Both farmed fish, from a private farm nearby Lake Manzala in Damietta, Egypt, and wild-caught fish, from the

Maintaining the balance of intestinal microbiota is vital for the growth and health of crustaceans. The current study explored the influences of the surface layer proteins (SLPs) of Pediococcus pentosaceus on the growth performance, disease resistance, and gut microbial community of the freshwater prawn Macrobrachium rosenbergii. After 28 days of feeding, obvious enhancements in the growth performance

The goals of this study were to evaluate growth, development, and calcification process of veligers of Strombus gigas grown in natural conditions in mesocosm versus laboratory conditions. In this study, larvae bred in mesocosm conditions had a good growth rate (33.3±12.40 μm.day−1) when fed with natural phytoplankton in natural flowing seawater versus a lower growth rate of 8.8±5.20 μm.day−1 for larvae

Misgurnus anguillicaudatus and Paramisgurnus dabryanus hybrids were generated via full diallel crosses between the Meishan (M_M) and Fuyang (M_F) populations of M. anguillicaudatus and Meishan (P_M) and Ziyang (P_Z) populations of P. dabryanus. The purebred and hybrid offspring were co-cultured in a pool for 4 months, and 96.5% of the offspring could be assigned to a single parental pair based on nine

This study was to evaluate the growth, intestinal morphology, intestinal flora, and anti-infection activity against Aeromonas hydrophila in common carp upon adding Bacillus licheniformis to the feed. Four experimental diets supplemented with different concentrations of B. licheniformis were as follows: 0 (CK), 106 colony forming units (CFU)/g (A), 107 CFU/g (B), and 108 CFU/g (C). After 60 days of

Several strains of pearl oysters (Pinctada fucata) are distributed in the coastal areas of South China. To explore strategies for genetic improvement, additive genetic, heterotic, and strain reciprocal effects on growth traits were estimated by performing a full 3 × 3 diallel cross of three pearl oyster strains that are local to Beihai, Guangxi Province; Xuwen, Guangdong Province; and Sanya, Hainan

Matrix metalloproteinase (MMP)-9 belongs to the zinc-dependent endopeptidase family, which is associated with important inflammatory processes and plays an important role in cell metabolism, embryonic development, and wound repair. The present study was performed using Pampus argenteus individuals fed with different feeds. The full-length cDNA of the MMP-9 gene was 2783 bp and encoded 681 amino acids

Food incidents have led to the increase in demand for food products certified by an international quality assurance certification of consumers all over the world. Shrimp is an important daily food product. As one of the largest shrimp production countries with the export-orientation, Vietnamese shrimp producers have to consider applying for the international quality assurances certifications to be

Edwardsiella piscicida (E. piscicida) is a common pathogen in freshwater and marine environments and an important intestinal pathogen of fish. Fucose large presence in the intestines could possibly regulate relevant genes to promote bacterial infectivity. In this study, the wild-type E. piscicida and the fucP gene-deleted strain ΔfucP were used to identify its virulence-regulating pathway and colonization

Nile tilapia is an important economically farmed fish worldwide, and Streptococcus agalactiae has become the most serious disease problem for the tilapia industry in China. Therefore, a better understanding of the innate immune mechanisms and their functions in the context of pathogen invasion is needed. In this study, a high-throughput proteomic strategy was developed for determining the differential

Aquaculture managers and industry must take into account the impact of climate change on production and environmental quality to ensure that sector growth is sustainable over the coming decades, a key requirement for food security. The potential effects of climate change on aquaculture range from changes to production capacity in existing cultivation areas to changes in the areas themselves, which

Haematococcus pluvialis is known as the richest natural source of carotenoid astaxanthin, whose synthesis is related to changes in cells according its complex life cycle and the availability of nutrients present in the culture media. This study’s objective was to evaluate the influence of different culture media under photoautotrophic and mixotrophic conditions on the growth, life cycle, biochemical

The production of blue mussels is currently reliant upon supply of wild larvae, which is a limiting factor to upscaling production. A potential solution to address this limiting factor is to develop a larval hatchery; however, costs associated with microalgal cultivation to feed the larvae account for around 30% of total costs. Microalgae are classically considered to be photoautotrophic and are cultured

Development of a blue economy is firmly embedded in the development plans of Bangladesh. Advances in freshwater aquaculture have promoted Bangladesh to the fifth largest fish producer in the world. However, the marine resource base of Bangladesh, which is now even greater following the recent settling of disputes regarding maritime boundaries with neighbouring countries, lends itself to the development

Nitrite is one of the most common pollutants in high-density aquaculture or in recirculated aquaculture systems. In this study, gene and miRNA expression dynamics were investigated for unveiling the genetic regulation of Eriocheir sinensis in response to acute nitrite stress. Two groups of E. sinensis with different vitality of appendages (i.e., NG and DG) were treated with nitrite-N in 6 and 24 h

Non-invasive fish identification of individuals can provide new possibilities for the monitoring of fish cultivation, improve and make fish production technologies less demanding for farmers, and increase fish welfare. The aim of this research is to confirm the idea of automatic non-invasive image-based fish identification of individuals using visible features on a fish body and prove the pattern stability

The chub, Squalius cephalus (L.), is an important stocking fish in European rivers. This study investigates sustainable measures for culturing chub in earthen ponds. Two novel treatments were applied to enhance utilisation of natural pond food resources: yellow plates used as insect attractants (YIT) and plant biomass supplementation (PB) as a substrate supporting the development of natural food organisms

Sulfated polysaccharides (SP) from seaweeds exhibit numerous biological activities and are less toxic than conventional antiviral drugs. However, little is known about their mode of action. This study aims at extracting the polysaccharides from brown seaweed Sargassum ilicifolium and then evaluating its antiviral activity against fish Betanodavirus. The extracted SP was characterized through FT-IR

Tilapia and catfish are the most popular fish species in aquaponics. However, they are not well-accepted in all markets, and finding alternative species is important in order to increase the variety of food products and meet market demands. South America has several potential fish species for aquaponics systems. Encouraging the implementation of integrated aquaculture systems by providing information

Quasipaa boulengeri is consumed as a valuable delicacy in many places in the world. Recent studies showed that water temperature is a very important environmental factor that influences the growth and metamorphosis of reared frog tadpoles. However, the molecular mechanisms of tadpoles in response to water temperature are still unknown. In this study, physiological changes and transcriptomes of tadpoles

This study was performed to investigate the effects of dietary acetic acid, probiotic protexin, and their combination on growth performance, intestinal microbiota, digestive enzymes, immune responses, and fatty acids composition in Siberian sturgeon. A total of 120 healthy fish with an average body weight of 54.85 ± 0.36 g were randomly divided into 4 experimental groups of 3 replicates. Fish were

Owing to the growing need for eco-friendly aquaculture, usage of herbal feed supplement receives higher attention. A commercial shrimp feed supplement known as Ban-V is a unique blend of polyherbal extracts that act synergistically with each other to help in improving the immune system, protects hepatopancreas and activates several metabolic pathways for better growth and disease resistance. For that

In recent decades, aquaculture has played a significant role in fulfilling the vast demand for animal protein requirements and consequently in food security. However, environmental contamination and disease prevalence are considered essential challenges for the sector. In this regard, new approaches have been paved in technology to deal effectively with such challenges. Among these, nanotechnology—as

This study was aimed at evaluating whether dietary chromium yeast (CrYst) and astaxanthin (ASTA) could enhance the growth performance, anti-oxidative capacity, and resistance to heat stress of abalone Haliotis discus hannai (initial body weight: 1.14±0.10 g; initial shell length: 19.20±0.87 mm) after a 120-day feeding trial. Based on the basal diet, the other three experimental diets were designed

Tyrosinase-related protein 1 (tyrp1) and tyrosinase-related protein 2 (tyrp2) genes are important downstream regulatory factors for body colour formation in animals. The present study aimed to explore the relationship between tyrp1a and tyrp2 expression and body colour variation between wild-type (WT) and yellow mutant (YM) rainbow trout. The full-length cDNA sequences of trout tyrp1a and tyrp2 were

Precisely analysing and optimising feeding regimes is central to salmonid growth performance and delivery of special diets. The current study developed novel video surveillance methods and analysis techniques to assess individual feed intake and minimum pellet intake (MPI) in individually identified juvenile rainbow trout, Oncorhynchus mykiss. Three trials were conducted to test the impact of short-term

Gynogenetic progeny of sterlet Acipenser ruthenus were obtained by inseminating eggs with UV-inactivated sperm followed by meiotic restoration of ploidy by heat shock. Gynogenetic origin of progeny was assessed by parentage assignment using 15 microsatellite markers. Sex ratio was investigated by gonad histology in 15 3-year-old fish, eight of which were confirmed gynogenotes, with five of those containing

The objective of the present study was to evaluate the action of benzocaine and eugenol over anesthesia stages and the use of three anticoagulants (ethylenediamine tetraacetic acid, sodium citrate, and sodium heparin) over hematological and biochemical parameters and erythrocyte osmotic fragility in tambaquis Colossoma macropomum. For that, fish were distributed into two experimental groups: G1: fish

Global cultured shrimp production has sustained considerable losses due to acute hepatopancreatic necrosis disease (AHPND) caused by some strains of Vibrio that secrete PirAB binary toxin. Previous experiments have revealed changes in mortality due to AHPND under variable environmental conditions. In order to determine whether and how environmental factors affect the pathogenicity of a strain of Vibrio

The main aim of the present study was to determine the effects of a seaweed-based biostimulant’s supplementation on the growth of Chlorella variabilis. A liquid extract from Kappaphycus alvarezii (K-sap) was prepared and supplemented in the growth medium from 0.2 to 5% concentrations. The supplementation of K-sap increased the growth and photosynthetic performance of C. variabilis. Addition of 0.4%

A 120-day experiment was conducted to understand the growth and immunomodulatory response of Penaeus vannamei reared in biofloc-integrated periphyton system–like natural substrates like bamboo (NS1), sugarcane bagasse (NS2), artificial substrates like polyvinyl chloride mat (AS1), agricultural shed net (AS2), and a control group without biofloc and substrate. Experiments were carried out in 500-L fiber-reinforced

With their low molecular weight and high level of assimilation, mixes of free amino acids (MFAA) obtained from the extensive hydrolysis of poultry keratin are potential interesting candidates for aquaculture feeds. Two trials, I and II, were conducted to evaluate the effects of MFAA on whiteleg shrimp Litopenaeus vannamei post larvae (PL). Both trials included a growth phase and experimental challenges

The farmed red-bellied pacu Piaractus brachypomus is a valuative commercial fish widely exploited in fish farming. Histopathologic alterations in small intestine of this fish were associated with heavy roundworms infection. Of a total of thirty-five fish examined, all were parasitized with a prevalence of 100%, intensity of 290–6403, and mean intensity of infection of 4467.5 parasites per fish. According

Tilapia lake virus (TiLV) is a serious pathogen of farmed Nile tilapia (Oreochromis niloticus) responsible for significant mortalities. In this study, we investigated a disease outbreak in cage-farmed Nile tilapia in India. The infected fish exhibited clinical signs such as severe scale loss, haemorrhage, exophthalmia, and fin and tail rot. The samples were screened for Tilapia lake virus (TiLV) by

Global inland aquaculture continues to grow rapidly at an annual rate of 5.8%, increasing competition for other land use thereby generating sustainability concerns. Nigeria is the largest producer of African catfish, yet species-level information is completely scanty in relation to encompassing nature of environmental, social and economic values. In this study, a field survey exercise of the operations

Vibriosis is one of the destructive bacterial diseases affecting marine fishes, crustaceans, and bivalves causing high mortality with severe economic losses worldwide. Antibiotics are widely used to manage the spread of various bacterial pathogens. Due to its intense usage, pathogens have developed drug resistance towards the antibiotics. Extended spectrum beta-lactamase (ESBL) produced by bacteria

We conducted a survey to gather data on the current production and operating costs of Sabaki tilapia (Oreochromis spilurus) aquaculture in Saudi Arabia. The results show the existence of Sabaki tilapia farming on small, medium, and industrial levels in 2019, with average farm size >10 ha and employing >5 farmworkers throughout the production cycle in polyculture systems. Most farms used significantly

Nutrition and the lack of an established protocol for the larviculture of Octopus are some of the bottlenecks for the development of Octopus aquaculture. This study aims to start filling in these knowledge gaps by obtaining daily feeding rates (FR) of Octopus americanus paralarvae at different ages by testing different live prey types (Artemia nauplii, Acartia lilljeborgii copepods, and Callinectes

Over the past two decades, intensive work has been conducted on antioxidants as they have great potential to prevent diseases and complications associated with age. Seaweeds are rich natural sources of bioactive metabolites with antioxidant and antimicrobial characteristics. In the present study, bioactive metabolites were extracted from the seaweed Gelidium pusillum by maceration in aqueous and ethanolic

Biofouling has been reported to be both harmful and innocuous on the growth and survival of cultured bivalves. If harmful, it could increase the operational cost substantially in an attempt to mitigate it. The study investigated the effect of sedentary biofoulers on the growth and survival of Crassostrea tulipa cultured on coconut shell and oyster shell cultches in the Densu Delta, Ghana, from December

This study analyzes the investment in Penaeus (Litopenaeus) vannamei shrimp production in greenhouses using the biofloc technology system (BFT). Considering bioeconomic variables, a sensitivity analysis was performed with data collected over the course of 10 years to evaluate program efficiency. The parameters considered include a stocking density of 400 shrimp/m2, which reached a productivity rate

Our aim was to verify whether genes in the coagulation complement and cytokine interaction pathways are crucial to the resistance to grass carp hemorrhagic disease in grass carps (Ctenopharyngodon idella). To evaluate this, we acquired male grass carps with grass carp reovirus (GCRV) resistance, F1 generation, ordinary male fish, control F1 progenies (hybridized ordinary fish), and barbel chub (Squaliobarbus

The accelerated development of high-density brackishwater shrimp farming necessitates the importance of bioremediation. Seaweeds have the potential to reduce nutrients from aquaculture systems and provide extra income when species of economic importance are used. Identification of suitable seaweed species which is locally available in abundance with bioremediation capacity in brackishwater system is

Oyster reef habitats in estuarine areas are an important marine ecosystem globally. Due to the destruction of oyster reef habitats within the Luanhe River estuarine area, Bohai Sea, China, a local fisheries company created 2 km2 of artificial oyster reef habitats by deploying artificial reef blocks that provided a settling surface for a natural oyster population and conducted sea cucumber aquaculture

The use of probiotics can beneficially improve the water quality in the biofloc technology (BFT) system consequently enhancing the fish performance. This study focused on the effect of Bacillus subtilis on a clear water static system compared to the BFT system on the productive performance, proximate body composition, and diversity of intestinal bacterial communities of tambaqui (Colossoma macropomum)

Shrimp aquaculture is the rapidly growing sector of fish culture producing sectors in the world due to its rising demand in developed countries. Moreover, the intensive and extensive shrimp culture systems are affected mainly by infection diseases caused by several pathogenic agents and resulting in high economic losses. Nowadays, controlling and preventive infection diseases are the major concern

Effects of adding organic acid salts (OAS) to plant protein (PP)–rich feeds were evaluated in a trial with juvenile yellowfin seabream (Acanthopagrus latus) (initial weight ca 6.5 g). Fish were given iso-nitrogenous (ca. 48% protein) and iso-caloric (ca. 19.6 kJ g−1) feeds supplemented with sodium acetate (SA) and sodium propionate (SP): SP5 (5 g SP kg−1), SP10 (10 g SP kg−1), SA5 (5 g SA kg−1), SA10

Viral nervous necrosis (VNN), or viral encephalopathy and retinopathy caused by nervous necrosis virus (NNV), is an acute viral disease of fish, resulting in high mortality globally in cultured marine fish. The pathogen, Betanodavirus belonging to the family Nodaviridae, has been widely documented in both farmed and wild fish, besides in invertebrate species across the habitat barriers. However, cichlid

Understanding the development of immunity in the early life of fish may help improve the effective management of diseases in aquaculture. However, little is known about the timing of the appearance of different immune-related genes in African catfish C. gariepinus, an important aquaculture species in Africa and Southeast Asia countries. The current study examined the transcriptional onset of immune-related

Utilizing microbial products could be considered a novel approach to sustain the present growth of the aquafeed sector due to dwindling availability and high cost of fishmeal. Various microbial products in terms of isolates, whole-cell biomass, and live organisms are mainly derived from algae, bacteria, fungi, and yeast through the process of fermentation. They have a balanced amino acid profile and

Temperature is among the critical determinants of the physiology of fishes and other heterotherms throughout the life history. Temperatures outside of the optimal range distress embryonic and larval development with untoward consequences later in life. To understand the effect of high temperature on embryogenesis and organogenesis, the commercially important rohu carp (Labeo rohita) was chosen. Rohu

The effects of different stocking densities (StDs) on growth and stress resistance rate (Rs) to air exposure (to evaluate the health condition of fish) of juvenile Colossoma macropomum in a recirculating aquaculture system (RAS) were investigated. A total of 1064 juveniles (0.35 ± 0.10 g) were stocked in 0.5 (D0.5), 1 (D1), 3 (D3), and 5 animals/L (D5) in four different RASs of four circular tanks

Macroalgae-based products are increasing in demand also in Europe. In the European Union, each category of macroalgae-based products is regulated separately. We discuss EU legislation, including the law on medicinal products, foods including food supplements and food additives, feed and feed additives, cosmetics, packaging materials, fertilizers and biostimulants, as well as biofuels. Product safety

Vibriosis is one of the common diseases caused by gram-negative bacteria from the genus Vibrio. To treat vibriosis, vaccination has been proven to be the most effective treatment as it can avoid the risk of drugs or antibiotics resistance. Microalgae are commonly used as feed for aquatic organisms and Nannochloropsis sp. is one of the highly utilized species for fish feed. This study focused on the

Growth of fed aquaculture is dependent on finding sustainable and inexpensive ingredients that would satisfy the nutritional requirements of fish. The present work assessed restaurant post-consumer food waste as an ingredient in feeds for small (ca 6.5 g) rainbow trout, Oncorhynchus mykiss. Food waste from Lebanese-food restaurants was used to prepare seven iso-nitrogenous feeds (ca 42.5% protein,

This study was conducted to investigate the effect of propolis on the growth, body composition, and serum biochemistry of juvenile sea bream (Sparus aurata). Propolis was added to a commercial sea bream feed (45.51% protein, 17.12 lipid %) at (control) 0 (P0), 1.25 (P1.25), 2.5 (P2.5), 5 (P5), 10 (P10), and 20 (P20) g kg−1. The trial used three replicates of 50 fish (ca 12 g initial weight) in 400-L

Aquaponics (AP) is an integrated multi-trophic system that combines elements of recirculating aquaculture systems (RAS) and hydroponics (HP). In AP systems, waste streams from the RAS, rich in nutrients, are reused to grow plants hydroponically. Fish sludge (the solid fraction of the waste stream) contains a major part of these nutrients (i.e. the macro and microelements and especially P) and these

Chitin is the most important natural polysaccharide after cellulose; however, it is not widely used for industrial application because of its insolubility in many solvents. The present study utilizes Indian major carps (Labeo rohita, Catla catla, and Cirrhinus mrigala) scale to extract chitin and prepare chitosan by a sequence of chemical processes involving demineralization, deproteinization, and