ORCID Profile
0000-0003-2765-4912
Current Organisations
Virginia State University
,
University of Arkansas at Pine Bluff
,
Universiti Putra Malaysia
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Publisher: Elsevier BV
Date: 10-2020
Publisher: Wiley
Date: 02-01-2020
DOI: 10.1111/RAQ.12410
Publisher: Wiley
Date: 24-03-2013
DOI: 10.1111/RAQ.12014
Publisher: Triveni Enterprises
Date: 30-09-2020
Publisher: Triveni Enterprises
Date: 15-09-2018
Publisher: Elsevier BV
Date: 12-2015
Publisher: Triveni Enterprises
Date: 30-09-2020
Publisher: Elsevier BV
Date: 08-2018
Publisher: Informa UK Limited
Date: 02-01-2015
Publisher: Elsevier BV
Date: 05-2016
Publisher: Informa UK Limited
Date: 02-04-2016
Publisher: Springer Science and Business Media LLC
Date: 14-09-2017
Publisher: Elsevier BV
Date: 10-2007
DOI: 10.1016/J.CBPA.2007.04.018
Abstract: The current study was conducted to determine the LC(50) value of ammonia-N as well as the effects of acute exposure to elevated ammonia on the haemolymph osmolality, ionic composition, ammonia-N and pH levels of early juvenile mud crabs, Scylla serrata. The results show that early S. serrata juveniles have a high 96-h LC(50) value of 95.35 mg/L ammonia-N (6.81 mg/L NH(3)-N) or 6.80 mmol/L total ammonia-N (0.486 mmol/L NH(3)-N). Following a 96-h exposure, the haemolymph osmolality and K(+) levels of the surviving crabs remained unaltered (p>0.05) at all ammonia-N concentrations, while the haemolymph Na(+) and Ca(2+) were significantly lower (p<0.05) for the crabs exposed to 5.710 and 7.138 mmol/L ammonia-N. While the haemolymph ammonia-N levels of the crabs significantly increased (p 0.05) from that of the control crabs which coincided with significantly lower (p<0.05) haemolymph Na(+) and Ca(2+) levels. These physiological responses may explain the high ammonia tolerance of early S. serrata juveniles.
Publisher: Elsevier BV
Date: 12-2020
Publisher: Elsevier BV
Date: 05-2016
DOI: 10.1016/J.ENVPOL.2016.01.055
Abstract: Information on the biological responses of polyploid animals towards environmental contaminants is scarce. This study aimed to compare reproductive axis-related gene expressions in the brain, plasma biochemical responses, and the liver and gill histopathological alterations in diploid and triploid full-sibling juvenile African catfish (Clarias gariepinus). Fish were exposed for 96 h to one of the two waterborne phenanthrene (Phe) concentrations [mean measured (SD): 6.2 (2.4) and 76 (4.2) μg/L]. In triploids, exposure to 76 μg/L Phe increased mRNA level of fushi tarazu-factor 1 (ftz-f1). Expression of tryptophan hydroxylase2 (tph2) was also elevated in both ploidies following the exposure to 76 μg/L Phe compared to the solvent control. In triploids, 76 μg/L Phe increased plasma alkaline phosphatase (ALP) and lactate dehydrogenase (LDH) levels compared to the other Phe-exposed group. It also elevated lactate and glucose contents relative to the other groups. In diploids, however, biochemical biomarkers did not change. Phenanthrene exposures elevated glycogen contents and the prevalence of histopathological lesions in the liver and gills of both ploidies. This study showed substantial differences between diploids and triploids on biochemical and molecular biomarker responses, but similar histopathological alterations following acute Phe exposures.
Publisher: Springer Science and Business Media LLC
Date: 11-04-2022
Publisher: Hindawi Limited
Date: 16-06-2014
DOI: 10.1111/ARE.12492
Publisher: Brill
Date: 17-01-2023
Abstract: Farming black soldier fly (Hermetia illucens) larvae (BSFL) leads to two products BSFL as high quality protein/lipid and leftover ‘frass’ as an organic fertiliser. Little information exists on the influence of different substrates on the mineral composition of these products. In this study, orange or banana peels, fruit and in their combination were fed to BSFL for two weeks. BSFL survival was high (95-100%) and not significantly different among treatments. Peels of either fruit led to significantly shorter and lighter BSFL. However, banana peels significantly increased P, K, Ca, Na, Mn and Mg in BSFL compared to all others. In the frass, the P content was unaffected by treatment while K was significantly highest and lowest when banana and orange peels were composted with BSFL, respectively. Meanwhile, Cu and Zn, which are often limiting nutrients, were significantly highest and lowest in the orange peel/fruit treatment and banana treatment, respectively. In all cases, the tested minerals in BSFL were substantially higher than the initial substrate, especially for Fe, and the mineral levels generally reflected those in the substrate. Although fruits and their peels are not recommended as the only food source for BSFL and provided little Fe, Ni or Cu, the peels could be viewed as valuable supplements to enhance the P, K, Ca, and Mg content in BSFL and frass.
Publisher: Informa UK Limited
Date: 27-11-2019
Publisher: Informa UK Limited
Date: 07-10-2017
Publisher: Pesticide Science Society of Japan
Date: 2016
Publisher: Wiley
Date: 11-07-2018
DOI: 10.1002/MCF2.10034
Publisher: Wiley
Date: 31-03-2021
DOI: 10.1111/JEN.12887
Abstract: Microplastics (MPs) are microscopic particles that are now found in almost all ecosystems where they may exert adverse effects on various organisms, including insects. In this study, 20 black soldier fly ( Hermetia illucens ) larvae (BSFL) were exposed to MPs, in the form of polypropylene (PP‐MPs 55 ± 4 µm) at 0.22% (26,972,507 particles/kg), versus a control (no added MPs) in triplicate for two weeks. After two weeks, final lengths, weights, percentage of pupation, fatty acid composition of BSFL and substrate reduction percentage were measured. Survival, lengths/weights and percentage substrate reduction in the PP‐MP group were not significantly different from the control. However, percentage of pupation was significantly lower in the PP‐MP treatment (at 65.2%) compared to the control (at 83.8%). Among the measured fatty acids, only propionic and butyric acid changed, and these short‐chain fatty acids (SCFAs) significantly increased from 0.12% and 0.17% to 0.14 and 0.19%, respectively, in the PP‐MP‐exposed group. This study indicates that exposure to environmentally relevant levels of PP‐MPs can substantially delay development, while the increase in the SCFA may indicate a change in the gut microbiota.
Publisher: Elsevier BV
Date: 04-2012
Publisher: Elsevier BV
Date: 02-2017
Publisher: Elsevier BV
Date: 03-2010
DOI: 10.1016/J.CBPC.2009.10.011
Abstract: Ammonia-N toxicity to early Portunus pelagicus juveniles at different salinities was investigated along with changes to haemolymph osmolality, Na(+), K(+), Ca(2+) and ammonia-N levels, ammonia-N excretion and gill Na(+)/K(+)-ATPase activity. Experimental crabs were acclimated to salinities 15, 30 and 45 per thousand for one week and 25 replicate crabs were subsequently exposed to 0, 20, 40, 60, 80, 100 and 120 mg L(-1) ammonia-N for 96-h, respectively. High ammonia-N concentrations were used to determine LC(50) values while physiological measurements were conducted at lower concentrations. When crabs were exposed to ammonia-N, anterior gill Na(+)/K(+)-ATPase activity significantly increased (p<0.05) at all salinities, while this only occurred on the posterior gills at 30 per thousand. For crabs exposed to 20 and 40 mg L(-1) ammonia-N, both posterior gill Na(+)/K(+)-ATPase activity and ammonia-N excretion were significantly higher at 15 per thousand than those at 45 per thousand. Despite this trend, the 96-h LC(50) value at 15 per thousand (43.4 mg L(-1)) was significantly lower (p<0.05) than at both 30 per thousand and 45 per thousand (65.8 and 75.2 mg L(-1), respectively). This may be due to significantly higher (p<0.05) haemolymph ammonia-N levels of crabs at low salinities and may similarly explain the general ammonia-N toxicity pattern to other crustacean species.
Publisher: Elsevier BV
Date: 11-2016
DOI: 10.1016/J.ENVRES.2016.07.024
Abstract: Despite the ubiquity of microplastics (MPs) in aquatic environments and their proven ability to carry a wide variety of chemicals, very little is known about the impacts of virgin or contaminant-loaded MPs on organisms. The primary aim of this study was to investigate the impacts of virgin or phenanthrene (Phe)-loaded low-density polyethylene (LDPE) fragments on a suite of biomarker responses in juvenile African catfish (Clarias gariepinus). Virgin LDPE (50 or 500µg/L) were preloaded with one of two nominal Phe concentrations (10 or 100µg/L) and were exposed to the fish for 96h. Our findings showed one or both Phe treatments significantly increased the degree of tissue change (DTC) in the liver while decreased the transcription levels of forkhead box L2 (foxl2) and tryptophan hydroxylase2 (tph2) in the brain of C. gariepinus. Exposure to either levels of virgin MPs increased the DTC in the liver and plasma albumin: globulin ratio while decreased the transcription levels of tph2. Moreover, MPs modulated (interacted with) the impact of Phe on the DTC in the gill, plasma concentrations of cholesterol, high-density lipoprotein (HDL), total protein (TP), albumin, and globulin, and the transcription levels of fushi tarazu-factor 1 (ftz-f1), gonadotropin-releasing hormone (GnRH), 11 β-hydroxysteroid dehydrogenase type 2 (11β-hsd2), and liver glycogen stores. Results of this study highlight the ability of virgin LDPE fragments to cause toxicity and to modulate the adverse impacts of Phe in C. gariepinus. Due to the wide distribution of MPs and other classes of contaminants in aquatic environments, further studies are urgently needed to elucidate the toxicity of virgin or contaminant-loaded MPs on organisms.
Publisher: Elsevier BV
Date: 06-2018
DOI: 10.1016/J.ENVPOL.2017.11.040
Abstract: Silver barb Barbodes gonionotus fry were exposed to polyvinyl chloride (PVC) fragments at increasing concentrations of 0.2, 0.5 and 1.0 mg/L for 96 h, following which whole body histological evaluation and analysis of the digestive enzymes trypsin and chymotrypsin were performed. Whole body trypsin and chymotrypsin activities increased significantly in fish exposed to 0.5 and 1.0 mg/L PVC as compared those exposed to zero or 0.2 mg/L PVC. In fish exposed to all tested concentrations, PVCs were observed in both the proximal and distal intestine, and fish exposed to 0.5-1.0 and 1.0 mg/L PVC, respectively, and these particles were associated with localized thickening of the mucosal epithelium. No tissue damage was evident in any other internal organs or gills. This lack of damage may be attributed to the absence of contaminants associated with the PVC fragments and their relatively smooth surface. The increased whole body trypsin and chymotrypsin activities may indicate an attempt to enhance digestion to compensate for epithelial thickening of the intestine and/or to digest the plastics.
Publisher: Springer Science and Business Media LLC
Date: 12-09-2017
DOI: 10.1007/S10695-017-0420-X
Abstract: Jatropha seed cake (JSC) is an excellent source of protein but does contain some antinutritional factors (ANF) that can act as toxins and thus negatively affect the growth and health status of fish. While this can limit the use of JSC, detoxified Jatropha protein isolate (DJPI) may be a better option. An 8-week study was performed to evaluate dietary DJPI to common carp Cyprinus carpio. Five iso-nitrogenous diets (crude protein of 38%) were formulated that consisted of a C
Publisher: Triveni Enterprises
Date: 15-09-2018
Publisher: Springer Science and Business Media LLC
Date: 06-07-2022
Publisher: Elsevier BV
Date: 05-2009
DOI: 10.1016/J.ECOENV.2009.02.003
Abstract: Among anthropogenic discharges, nitrite and potassium can simultaneously enter aquatic ecosystems at high loading rates which can threaten marine animals. The sensitivity of early juvenile blue swimmer crabs, Portunus pelagicus, to the subchronic exposure to nitrite, potassium and their combination was evaluated by measuring the survival, growth, total haemocyte count (THC) and gill histopathological changes. In all NaNO(2)-N and KNO(2)-N treatments the survival substantially decreased, many due to "molt death syndrome", along with significantly lower (p<0.01) specific growth rates (SGR). Although fewer deaths occurred in the KCl-K treatments, the SGR at the higher concentrations were significantly less (p<0.05) than the control. The gill histopathological changes following elevated NaNO(2)-N, KNO(2)-N and KCl-K exposure showed drastic but similar damage. In spite of a long term healing response, indicated by a significant hemolymph THC increase (p<0.01) and several gill lamellae modifications, early P. pelagicus juveniles are highly sensitive to elevated NO(2)-N levels.
Publisher: Wiley
Date: 05-2017
Publisher: Elsevier BV
Date: 02-2017
Publisher: Hindawi Limited
Date: 07-07-2020
DOI: 10.1111/ARE.14749
Publisher: Informa UK Limited
Date: 2013
Publisher: MDPI AG
Date: 29-09-2023
Publisher: Elsevier BV
Date: 09-2006
Publisher: Triveni Enterprises
Date: 15-09-2018
Publisher: Elsevier BV
Date: 2013
Publisher: Elsevier BV
Date: 2018
DOI: 10.1016/J.FOODCHEM.2017.07.061
Abstract: A 9-week study was conducted to compare dietary corn starch (CS) or tapioca starch (TS), with or without being pre-gelatinized (PG), on the growth, feeding efficiencies, plasma and muscle biochemistry, intestinal short chain fatty acids (SCFA), and liver glycogen of triplicate groups of 20 red hybrid tilapia (Orecohromis sp.). Various pellet characteristics were evaluated, along with their surface and cross sectional microstructure. The PG diets had significantly higher water stability, bulk density, and protein solubility, along with a smoother surface. Tilapia fed the TS diet had lower growth than had all other tilapia, but were significantly improved when diet was pre-gelatinized. In the PG treatments, intestinal SCFA significantly decreased while plasma glucose, cholesterol and triglycerides, as well as liver glycogen, significantly increased. Fish fed the CS diet had significantly more long chain polyunsaturated fatty acid than had those fed by other treatments. Pre-gelatinization may improve fish productivity and offer greater flexibility during aquafeed production.
Publisher: Elsevier BV
Date: 07-2011
Publisher: Elsevier BV
Date: 2018
Publisher: Elsevier BV
Date: 12-2017
Publisher: Hindawi Limited
Date: 28-07-2018
DOI: 10.1111/ANU.12806
Publisher: Informa UK Limited
Date: 02-01-2014
Publisher: Triveni Enterprises
Date: 30-09-2020
Publisher: Springer Science and Business Media LLC
Date: 27-03-2017
DOI: 10.1007/S10695-017-0365-0
Abstract: Dietary organic acids are increasingly being investigated as a potential means of improving growth and nutrient utilization in aquatic animals. A 9-week study was performed to compare equal amounts (2%) of different organic acids (sodium butyrate, acetate, propionate, or formate) on the growth, muscle proximate composition, fatty acid composition, cholesterol and lipid peroxidation, differential cell counts, plasma biochemistry, intestinal short-chain fatty acid (SCFA) level, and liver histopathology to red hybrid tilapia (Oreochromis sp.) (initial mean weight of 2.87 g). A second experiment was performed to determine their effects on lipid peroxidation and trimethylamine (TMA) when added at 1% to tilapia meat and left out for 24 h. The results of the first experiment showed no treatment effect to growth, feeding efficiencies, or muscle fatty acid composition, but all dietary organic acids significantly decreased intestinal SCFA. Dietary butyrate and propionate significantly decreased muscle lipid peroxidation compared to the control group, but the dietary formate treatment had the lowest lipid peroxidation compared to all treatments. Muscle crude protein and lipid in tilapia fed the formate diet were significantly lower and higher, respectively, and showed evidence of stress based on the differential cell counts, significantly higher plasma glucose and liver glycogen, as well as inflammatory responses in the liver. Although a potential benefit of dietary organic acids was a reduction to lipid peroxidation, this could be accomplished post-harvest by direct additions to the meat. In addition, inclusions of butyrate and propionate to tilapia meat significantly decreased TMA, which might be a more cost-effective option to improve the shelf life of tilapia products.
Publisher: Hindawi Limited
Date: 03-02-2023
DOI: 10.1155/2023/3308537
Abstract: Black soldier fly (Hermetia illucens) larvae (BSFL) production will likely increase to meet the growing demand for sustainable protein and lipids. A by-product is “frass,” which is a mixture of mostly larval excrement but also chitin. This mineral-richby-product could be a valuable aquaponic supplement, but the information is limited. The aim of this study was twofold to determine if BSFL frass additions could enhance the production, mineral composition, and chlorophyll content of collard greens (Brassica oleracea var. viridis) after 10 weeks as well as the influence of culturing collard greens with or without media. Each aquaponic system contained 20 channel catfish (Ictalurus punctatus initial mean weight of 128 g) that were fed twice daily to apparent satiation. Results showed that dissolved nitrogen, pH, and dissolved oxygen were unaffected ( p 0.05 ) by BSFL frass additions. There was a significant media and BSFL frass effect ( p 0.05 ) on total weight, in idual weight, and total height of collard greens where the media/frass treatment led to a ninefold increase in weight compared to the no media/no frass treatment. Moreover, both media and BSFL frass significantly increased ( p 0.05 ) the total chlorophyll content while extensive chlorosis was observed in the no media/no frass group. Manganese in collard greens was significantly increased ( p 0.05 ) by BSFL frass. The best combination for collard green growth and preventing any chlorosis was the media/frass treatment, which may be due to an increase in various nutrients that were more accessible by biomineralization in the media.
Publisher: Springer Science and Business Media LLC
Date: 21-06-2022
Publisher: Elsevier BV
Date: 04-2020
Publisher: Wiley
Date: 22-09-2017
DOI: 10.1080/08997659.2017.1374310
Abstract: Aqueous and methanol extracts of lemon Citrus limon peel, Euphorbia hirta (aerial parts), and fenugreek Trigonella foenum-graecum seeds were tested for their in vitro antimicrobial activities against the bacterium Aeromonas hydrophila. A swab paper disk method showed that the methanol extract of E. hirta (EHE) had the largest inhibition zone and the lowest minimal inhibitory concentration compared to all other herbal extracts. Based on these results, EHE was included in the diets of Sharptooth Catfish Clarias gariepinus at 0 (control), 2, 5, or 7 g/kg of diet (experiment 1). Each treatment was conducted in triplicate, with 30 fish (mean weight ± SE = 9.4 ± 0.4 g) in each replicate. After 30 d, the growth, feed intake, hepatosomatic index (HSI), and plasma biochemical parameters were measured. With a separate batch of Sharptooth Catfish, the efficacy of the EHE diets in conferring fish resistance to A. hydrophila over 30 d was compared to that of a diet containing oxytetracycline (OTC experiment 2). Six treatments were conducted in triplicate groups of 30 fish (mean weight ± SE = 9.0 ± 0.3 g) the Control fish were fed the control diet and were not injected with A. hydrophila, while the Control-AH and OTC-AH groups were infected with A. hydrophila and were fed either the control diet or the diet containing OTC at 1 g/199 g. The other three treatments included fish that were injected with A. hydrophila but fed diets with increasing EHE at 2, 5, or 7 g/kg. Experiment 1 showed no change to growth, feeding efficiency, HSI, or plasma biochemical parameters. In experiment 2, however, fish that were fed dietary EHE at 5 g/kg had significantly lower mortality than the Control-AH group, with further resistance observed for fish fed EHE at 7 g/kg. Dietary OTC was more effective than EHE as a prophylactic to A. hydrophila infection in Sharptooth Catfish. Nevertheless, EHE can potentially be a valuable dietary supplement to improve the resistance of Sharptooth Catfish to A. hydrophila infection. Received May 3, 2017 accepted August 24, 2017.
Publisher: Hindawi Limited
Date: 04-2012
Publisher: Informa UK Limited
Date: 14-02-2018
Publisher: Elsevier
Date: 2018
Publisher: Triveni Enterprises
Date: 15-09-2018
Publisher: Triveni Enterprises
Date: 15-09-2018
Publisher: Hindawi Limited
Date: 24-09-2018
DOI: 10.1111/ARE.13837
Publisher: National Shellfisheries Association
Date: 09-2015
DOI: 10.2983/035.034.0333
Publisher: Elsevier BV
Date: 03-2020
Publisher: Triveni Enterprises
Date: 30-09-2020
Publisher: Elsevier BV
Date: 12-2020
Publisher: Hindawi Limited
Date: 16-08-2018
DOI: 10.1111/ANU.12819
Publisher: National Shellfisheries Association
Date: 08-2016
DOI: 10.2983/035.035.0228
Publisher: Informa UK Limited
Date: 17-01-2014
Publisher: Hindawi Limited
Date: 03-2010
Publisher: Springer Science and Business Media LLC
Date: 02-06-2015
Publisher: Elsevier BV
Date: 07-2020
Publisher: Springer Science and Business Media LLC
Date: 11-2017
Publisher: Hindawi Limited
Date: 08-02-2021
DOI: 10.1111/ARE.15146
Publisher: Hindawi Limited
Date: 04-02-2017
DOI: 10.1111/ARE.13001
Publisher: Elsevier BV
Date: 02-2020
Publisher: Elsevier BV
Date: 12-2007
DOI: 10.1016/J.AQUATOX.2007.09.004
Abstract: Determining the acute nitrate tolerance of marine animals is important for conservation as high levels of nitrate may be discharged into aquatic ecosystems via various anthropogenic sources. Typically, sodium nitrate (NaNO(3)) is used to determine the acute nitrate toxicity of marine animals. The standard procedure involves dissolving NaNO(3) salt in distilled water to create a stock solution, which is then diluted in seawater to obtain the desired nitrate concentration for the toxicity test. However, due to the relatively low toxicity of NO(3)(-), large volumes of the stock solution are required to create high NaNO(3)-N concentrations in the test solutions for LC(50) (median lethal concentration) calculations. As the stock solution contains no other elements, other than Na(+) and NO(3)(-), this can lead to drastically altered Na(+)/K(+) ratios (compared to natural seawater) of the test solutions, which could significantly affect the osmo-ionoregulation of the animals, and subsequently bias survival data. Consequently, experiments were performed to determine if incorporating potassium chloride (KCl), at a K(+) level equaling natural seawater at 30 per thousand, to the NaNO(3)-N stock solution influences the haemolymph osmolality, ion composition and LC(50) values of two commercially important crab species, the mud crab Scylla serrata and the blue swimmer crab Portunus pelagicus. In each experiment with S. serrata and P. pelagicus, a total of 20 replicate crabs were exposed to NaNO(3)-N concentrations of 2000, 3000, 4000, 5000 and 6000 mgl(-1) with and without incorporated KCl. Mortality observations were made at 12-h interval for 96-h. After 96-h, the haemolymph osmolality, Na(+), K(+) and Ca(2+) of the surviving crabs were measured. The 96-h LC(50) values for early juveniles of S. serrata and P. pelagicus were 3601 (3314-3902) mg l(-1) versus 4339 (4056-4518) mg l(-1) and 3355 (3085-3620) mg l(-1) versus 4132 (3864-4409) mg l(-1), respectively for the treatments without and with incorporated KCl. Statistical analysis showed that the sole utilisation of NaNO(3) led to a significantly (p<0.01) lower LC(50) value for both crabs, likely a consequence of their significantly lower (p 0.05) in haemolymph K(+) was detected between crabs from the control and the treatment with incorporated KCl. It is therefore likely that previously reported acute nitrate toxicity tests have substantially underestimated the nitrate tolerances of marine animals. To avoid this problem, we propose incorporating KCl to the NaNO(3)-N stock solution as a standard protocol for future acute nitrate toxicity experiments on marine animals.
Publisher: Elsevier BV
Date: 03-2012
Publisher: Springer Science and Business Media LLC
Date: 07-12-2015
DOI: 10.1007/S10695-015-0173-3
Abstract: A 90-day feeding trial was conducted on the growth performance, feeding efficacy, body indices, various hematological and plasma biochemical parameters, and histopathological examination of the gonads from male and female Nile tilapia fingerlings when fed different crude plant extracts from Cinnamomum c hora, Euphorbia hirta, Azadirachta indica, or Carica papaya at 2 g kg(-1) compared to a control diet. This was followed by a 14-day challenge to Streptococcus agalactiae. All treatments were triplicated, and each treatment consisted of 30 fish. Results showed that C. papaya extracts were the most effective at delaying gonadal maturation to both male and female tilapia, as well as significantly increasing (P 0.05). Further, crude body lipid was lower in the C. c hora, E. hirta and C. papaya treatments, but was only significantly lower for the E. hirta treatment compared to the control. Meanwhile, none of the hematological or biochemical parameters were significantly affected, although plasma ALT was significantly lower for tilapia fed A. indica compared to the control. After the 14-day bacterial challenge, tilapia fed C. c hora supplementation had significantly higher survival, compared to the control, but was not significantly higher than the other supplemented diets. Results indicate that dietary C. papaya extract can significantly promote growth and delay gonadal maturation to both male and female tilapia, while C. c hora was the most effective prophylactic to S. agalactiae and may be a cost-effective and eco-friendly alternative to antibiotics.
Publisher: Elsevier BV
Date: 02-2018
Publisher: Hindawi Limited
Date: 13-03-2017
DOI: 10.1111/JAI.13338
Publisher: Springer Science and Business Media LLC
Date: 23-07-2020
DOI: 10.1038/S41598-020-69014-X
Abstract: Plant-based proteins are increasingly being used in aquafeeds, but one of the limitations is taurine deficiency that can be especially detrimental for carnivorous fish. In this study, taurine supplementation in high plant protein diets (low fish meal, 15%) was investigated on the growth performance and fillet organoleptic characteristics of European seabass ( Dicentrarchus labrax ), juveniles (78 ± 0.4 g). Five diets were formulated to contain 0 (C−), 5 (T5), 10 (T10) or 20 (T20) added taurine (g/kg), while a control diet (C+) included two-fold higher amount of fishmeal (30%) with no taurine supplementation. Seabass fed the T20 or C+ diet showed similar growth, which was significantly higher compared to those in the C-treatment. Histological examination of the muscle, liver and intestine were similar among treatments. No effect on spoilage bacterial growth or production of total volatile basic nitrogen was observed. Taurine supplementation significantly reduced fillet drip loss, while the fillets of European seabass fed the T10 and T20 diets showed significant higher and lower hardness and adhesiveness values, respectively. Moreover, fillet chewiness was also found to be significantly higher in fish fed the T20 diet compared to C+ and C− diets. Overall, it seems that high dietary taurine supplementation acted as a growth promoter and concurrently improved significantly the postharvest quality characteristics of seabass, which may be attributed to its role in maintaining cell membrane integrity and permeability.
Publisher: Hindawi Limited
Date: 23-02-2018
DOI: 10.1111/JAI.13650
Publisher: Elsevier
Date: 2018
Publisher: Elsevier BV
Date: 2020
DOI: 10.1016/J.AQUATOX.2019.105348
Abstract: Various strategies exist to control noxious cyanobacterial populations, although the application of a newly developed granular compound (sodium carbonate peroxyhydrate 'SCP', trade name 'PAK® 27' algaecide) containing hydrogen peroxide (H
Publisher: Elsevier BV
Date: 02-2017
DOI: 10.1016/J.SCITOTENV.2016.10.213
Abstract: So far, several classes of digesting solutions have been employed to extract microplastics (MPs) from biological matrices. However, the performance of digesting solutions across different temperatures has never been systematically investigated. In the first phase of the present study, we measured the efficiency of different oxidative agents (NaClO or H
Publisher: Springer Science and Business Media LLC
Date: 11-03-2021
Publisher: Elsevier BV
Date: 08-2017
DOI: 10.1016/J.FSI.2017.06.023
Abstract: A feeding trial was performed to assess the effects of dietary Medlar (Mespilus germanica) leaf extract (MLE) on the growth performance, skin mucus non-specific immune parameters as well as mRNA levels of immune and antioxidant related genes in the skin of common carp (Cyprinus carpio) fingerlings. Fish were fed diets supplemented with graded levels (0, 0.25, 0.50, and 1.00%) of MLE for 49 days. The results revealed an improvement to the growth performance and feed conversion ratio in MLE fed carps (P < 0.05), regardless of the inclusion level. The immunoglobulin levels and interleukin 8 levels in the skin mucous and skin, respectively, revealed significant increment in fish fed 1% MLE (P < 0.05) in comparison with the other MLE treatments and control group. Also, feeding on 0.25% and 0.50% MLE remarkably increased skin mucus lysozyme activity (P 0.05) in case protease activity in the skin mucous or tumor necrosis factor alpha and interleukin 1 beta gene expression in the skin of carps (P > 0.05). The expression of genes encoding glutathione reductase and glutathione S-transferase alpha were remarkably increased in MLE fed carps compared to the control group (P < 0.05) while carp fed 0.50% or 1.00% MLE had significantly increased glutathione peroxidase expression in their skin (P < 0.05). The present results revealed the potentially beneficial effects of MLE on the mucosal immune system and growth performance in common carp fingerlings.
Publisher: Wiley
Date: 03-10-2019
DOI: 10.1111/RAQ.12291
Publisher: Elsevier BV
Date: 06-2007
Publisher: Elsevier BV
Date: 04-2009
Publisher: Elsevier BV
Date: 2015
Publisher: Wiley
Date: 09-2007
DOI: 10.1897/07-144R.1
Publisher: Elsevier BV
Date: 2021
Publisher: Wiley
Date: 13-04-2023
DOI: 10.1111/JWAS.12965
Abstract: Strawberries can fetch high market prices, but this is often based on their sweetness. Previous studies have shown that sugar content in fruits is elevated by boron (B), but this has not been tested on strawberries in an aquaponic system. In this study, strawberries were aquaponically cultured with or without B supplementations and with or without media (2 × 2 factorial design) over 2 months. Each of the six identical aquaponic units contained 30 catfish juveniles (initial weight = 2.1 g) and two plant culture units one with a floating raft (without media) and one with expanded lava rock (with media). Borax was the source of B, which was weekly added at 0.01 mg/L. Water quality and fish growth were unaffected by B additions. Total number of strawberries and their total weights were unaffected by B or media. Media caused strawberries to be in idually heavier with higher sodium, iron and moisture but significantly less glucose and fructose. Supplementations of B significantly increased and decreased the B and zinc content of strawberries, respectively, as well as causing significantly shorter roots. Growing strawberries with or without media in an aquaponic system provided different advantages but B supplementations appeared unnecessary and may have caused some toxicity to the strawberries.
Location: United States of America
No related grants have been discovered for Nicholas Romano.