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Heba H. Mahboub; Hassnaa Mahmoud Elsheshtawy; Nagwa I. Sheraiba; Esra.M. Fahmy; Shimaa R. masoud; Eman A.A. Mohamed; Noha S. Abdelnaeim; Dalia Ibrahim Mohamed; Tamer Ahmed Ismail; Shaimaa A.A. Ahmed
... The present study assessed the protective aspects of the dietary exposure to black cumin (Nigella sativa, NS) powder on immune response, liver and kidney enzymes, tissue antioxidant capacity, gene expression, and testing the antibacterial activity against Burkholderia cepacia (B. cepacia, BC). Nile tilapia (O. niloticus) (n = 150) were divided into 5 groups, the first was control (Cont) neither ch ...
... Methyl mercury chloride “MMC” (CH₃ClHg) is an ubiquitous environmental toxicant that causes a variety of adverse effects. In the present study, we investigated the effects of sub-chronic toxicity of MMC on Nile tilapia (Oreochromis niloticus) through the evaluation of growth performance and hematological, biochemical, and oxidative stress biomarkers. From 150 healthy fish, five equally sized treat ...
... Fucoidan is a rich source of medicinally active immunostimulants that possess various pharmacological properties. This study examined the potential impact of fucoidan on the hematic indicators and antioxidative responses of Nile tilapia fed diets contaminated with aflatoxin B₁ (AFB₁). Fish (60 ± 6.1 g) were allocated to five groups; the first (control) and second groups were fed 0% or 1% fucoidan– ...
... Fumonisins (FB) are secondary metabolites of Fusarium fungi, and their ingestion are associated with liver disease in different species of animals. This study tests the hypothesis that FB alter redox balance-related gene expression in Nile tilapia fingerlings. A total of 180 fish randomly distributed in four treatments were used: the control treatment (0.0), 20 (FB20), 40 (FB40) and 60 (FB60) mg/k ...
... Although substantial knowledge of mercury toxicity in fish has been assembled; until now, studies investigating the toxic impacts in Nile tilapia (Oreochromis niloticus) following dietary exposure to organic methyl mercury (MeHg) are less prolific. Accordingly, the current study aimed to evaluate the impacts of MeHg on neurobehavioral and immune integrity in Nile tilapia after dietary exposure. Tw ...
... This is the first comprehensive report on the accumulation of Cr, Ni, As, and Ag in the fish species Nile tilapia Oreochromis niloticus and Nile perch Lates niloticus from Lake Victoria, complemented with recent data on Cu, Zn, Cd, and Pb. This also is the first report on Cr, Ni, As, and Ag levels in invertebrates: the shrimp Caridina nilotica, gastropod Pila ovata, and bivalve Mutela bourguignati ...
... Consumption of feed ingredients with a naturally low level of total aflatoxins contamination and possible consequences on fish health and seafood quality is a growing concern. To investigate effects of such dietary exposure on fish health parameters, Nile tilapia (Oreochromis niloticus) were fed basal diet (control), and diet naturally contaminated with a mix of aflatoxins (AFs; AFB1and 2, AFG1 an ...
... The use of feed additives in aquatic animals improves health conditions and well-being under pesticide toxicity. Thus, this study was aimed at evaluating the effect of an immunobiotic mixture (IM) on the growth performance, hemato-biochemistry, and immunity of Nile tilapia exposed to subacute deltamethrin (DMT). Fish were distributed into four groups: groups 1 and 2 were fed a control diet, while ...
... Little is known about the impacts of dietary exposure to inorganic mercury (Hg) for a long duration on the health indicators, growth, and disease resistance in Oreochromis niloticus. Accordingly, the current study was designed to assess the effects of Hg contaminated diets on blood biochemistry, growth, chemical composition, Hg bioaccumulation in the tissues, histopathology of liver and head kidne ...
... This study tested the hypothesis that different diets could modulate mercury (Hg) trophic transfer by concurrently altering the transfer of energy (in terms of growth) and transfer of Hg (in terms of biodynamic process). Firstly, we conducted a 40-d laboratory bioaccumulation experiment, in which tilapia (Oreochromis niloticus) was exposed to inorganic mercury (Hg[II]) and methylmercury (MeHg) via ...
Fernanda Garcia Sampaio; Maria Lídia Carra; Claudio Martin Jonsson; Vitoria Teodoro Gonçalves; Genoefa Dal’Bo; Kátia Santos Damacena Nunes; José Henrique Valim; Bruno Stéfano Lima Dallago; Sonia Claudia do Nascimento de Queiroz; Felix Guillermo Reyes Reyes
... Sulfamethazine (SMZ) is one of the most commonly used sulfonamide compounds in fish farming, and its physiological effects on fish are unknown. SMZ was administered to juvenile Nile tilapia (Oreochromis niloticus) at a dose level of 422 mg kg⁻¹ body weight, for a period of 11 days, via medicated feed. Fish were divided into two groups, the control group (CG) and the group fed with SMZ in feed. The ...
... Cadmium (Cd) is one of the most toxic heavy metals in aquatic ecosystem which affects fish health and aquaculture. In the present study, we examined the bioaccumulation of Cd in the gonads of tilapia via dissolved and dietary routes. We evaluated the subchronic effects of Cd on the histology of gonads, steroid hormone levels and sex-related gene expressions in tilapia. In addition, we also studied ...
Oreochromis niloticus; adverse effects; analysis of variance; bioavailability; brain; cadmium; chromium; cobalt; condition factor; copper; dietary exposure; fish; fish consumption; fish farms; fishermen; freshwater; gills; health status; heart; heavy metals; human health; lead; linear models; liver; nickel; pollution; public health; risk; sewage; zinc; Egypt
Abstract:
... The study was undertaken to assess the accumulation of some heavy metals (Cr, Co, Cu, Ni, Zn, Pb and Cd) in different tissues (muscle, gills, heart, liver, brain, bone and skin) of Tilapia nilotica. It is one of the most edible fish species in Egypt and was collected from a commercial fish farm in order to evaluate their potential risk to fishermen and consumers. This fish farm is fed with dischar ...
... With the increasing occurrence of dietary lead (Pb) contamination in aquaculture, a better understanding of the toxic effects of dietary Pb on aquatic animals is needed. Tilapia (Oreochromis niloticus) were exposed to dietary Pb at concentrations of 0, 100, 400 and 800 μg g−1 dry weight for 60 days, and Pb accumulation in tissues and blood, oxidative stress in posterior kidney and DNA damage in pe ...
... The aim of this study was to evaluate the response of ABC transporters, CYP1A and class alpha (α) GST genes, upon water and dietary exposures to benzo(a)pyrene (BaP) in Oreochromis niloticus. Partial mRNA sequences of ABC transporters (ABCB1b, ABCB11, ABCC1, ABCC2 and ABCG2) were identified, and their tissue distribution patterns evaluated in liver, gill and intestine, showing similarities with ot ...
... BaP is one of the most studied PAH, due to its ubiquitous presence in aquatic environments and toxicity to aquatic organisms. The main goal of this study was to assess BaP effects in Nile Tilapia after waterborne and dietary exposures, through the evaluation of EROD and GST activities in liver, gills and intestine, and BaP metabolites in bile; and also to evaluate the usefulness of these commonly ...
... Fish can be exposed to toxic cyanobacterial cells in natural waters and fish farms and suffer from oxidative damage. The present study investigates the effects of N-acetylcysteine (NAC), a glutathione (GSH) precursor, on the oxidative stress induced by Microcystis cyanobacterial cells containing microcystins (MCs) in tilapia fish (Oreochromis niloticus). Variation in lipid peroxidation (LPO) level ...
fish farms; fish culture; feed contamination; fish feeding; toxicity; aflatoxin B1; Oreochromis niloticus; tilapia (common name); long term effects; dietary exposure; farmed fish
Abstract:
... As a fish farmed widely in the tropical and subtropical regions where aflatoxin contamination has been generally detected, tilapia has been studied for aflatoxicosis evaluation in Asia. However, relatively short-term aflatoxin B1 (AFB1) exposure in previous studies resulted in some contradictory conclusions. Therefore, this work was designed to investigate the toxic effects and residue of AFB1 in ...
... This experiment was conducted to determine the effect of dietary lipid sources on growth performance, body proximate composition, hematology, immune response and resistance of Nile tilapia, Oreochromis niloticus, to Streptococcus iniae infection. Six isocaloric (3.2 kcal/g) and isonitrogenous (34% crude protein) semi-purified diets were supplemented with 7% of various sources of lipid, namely, cor ...
... Endosulfan is a worldwide used insecticide suspected to be highly toxic to aquatic organisms, including fish. Most of the available studies have focused in water exposures, although this pollutant can be transferred through food chain. Therefore, in the present study, the effects of Endosulfan on tilapia (Oreochromis niloticus), when administered through the diet. Fish were fed 21 days with diets ...