TY - JOUR. T1 - Chloride transport in mitochondrion-rich cells of euryhaline tilapia (Oreochromis mossambicus) larvae. AU - Horng, Jiun Lin. AU - Hwang, Pung Pung. AU - Shih, Tin Han. AU - Wen, Zhi Hong. AU - Lin, Chan Shing. AU - Lin, Li Yih. PY - 2009. Y1 - 2009. N2 - A noninvasive scanning ion-selective electrode technique (SIET) was applied to measure Cl- transport at individual mitochondrion-rich cells (MRCs) in the skin of euryhaline tilapia (Oreochromis mossambicus) larvae. In seawater (SW)-acclimated larvae, outward Cl- gradients (20-80 mM higher than the background) were measured at the surface, indicating a secretion of Cl- from the skin. By serial probing over the surface of MRCs and adjacent keratinocytes (KCs), a significant outward flux of Cl- was detected at the apical opening (membrane) of MRCs. Treatment with 100 μM ouabain or bumetanide inhibited the Cl- secretion by ∼75%. In freshwater (FW)-acclimated larvae, a lower level of outward Cl- gradients (0.2-1 mM) was measured at ...

TY - JOUR. T1 - Chloride transport in mitochondrion-rich cells of euryhaline tilapia (Oreochromis mossambicus) larvae. AU - Horng, Jiun Lin. AU - Hwang, Pung Pung. AU - Shih, Tin Han. AU - Wen, Zhi Hong. AU - Lin, Chan Shing. AU - Lin, Li Yih. PY - 2009/10/19. Y1 - 2009/10/19. N2 - A noninvasive scanning ion-selective electrode technique (SIET) was applied to measure Cl- transport at individual mitochondrion-rich cells (MRCs) in the skin of euryhaline tilapia (Oreochromis mossambicus) larvae. In seawater (SW)-acclimated larvae, outward Cl- gradients (20-80 mM higher than the background) were measured at the surface, indicating a secretion of Cl- from the skin. By serial probing over the surface of MRCs and adjacent keratinocytes (KCs), a significant outward flux of Cl- was detected at the apical opening (membrane) of MRCs. Treatment with 100 μM ouabain or bumetanide inhibited the Cl- secretion by ∼75%. In freshwater (FW)-acclimated larvae, a lower level of outward Cl- gradients (0.2-1 mM) was ...

TY - JOUR. T1 - Tilapia (Oreochromis mossambicus) brain cells respond to hyperosmotic challenge by inducing myo-inositol biosynthesis. AU - Gardell, Alison M.. AU - Yang, Jun. AU - Sacchi, Romina. AU - Fangue, Nann A.. AU - Hammock, Bruce D.. AU - Kltz, Dietmar. PY - 2013/12. Y1 - 2013/12. N2 - This study aimed to determine the regulation of the de novo myo-inositol biosynthetic (MIB) pathway in Mozambique tilapia (Oreochromis mossambicus) brain following acute (25 ppt) and chronic (30, 60 and 90 ppt) salinity acclimations. The MIB pathway plays an important role in accumulating the compatible osmolyte, myo-inositol, in cells in response to hyperosmotic challenge and consists of two enzymes, myo-inositol phosphate synthase and inositol monophosphatase. In tilapia brain, MIB enzyme transcriptional regulation was found to robustly increase in a time (acute acclimation) or dose (chronic acclimation) dependent manner. Blood plasma osmolality and Na+ and ClOconcentrations were also measured and ...

TY - JOUR. T1 - Effects of cadmium on the kinetics of calcium uptake in developing tilapia larvae, Oreochromis mossambicus. AU - Chang, M. H.. AU - Lin, H. C.. AU - Hwang, P. P.. PY - 1997. Y1 - 1997. N2 - The toxic effects of Cd2+ on Ca2+ influx kinetics in developing tilapia (Oreochromis mossambicus) larvae were evaluated. Addition of 20 μg l-1 of Cd2+ to the environment of 0 and 3 day-old larvae competitively inhibited the Ca2+ uptake within 4h resulting in a great increase in Km values for Ca2+ influx (19.3 and 17.4 fold, respectively) as compared with their respective controls. Consequently, the actual Ca2+ influx of larvae in solutions of 0.2 mM Ca2+ are suppressed by 32-45%. Also, 3 day-old larvae were more sensitive to internally accumulated Cd2+ than 0 day-old larvae. Although the Ca2+ influx in 0 and 3 day-old larvae may be restored to the levels of their respective controls with 24h of being transferred to a 20 μg l-1 Cd2+ solution, total body Ca2+ content was significantly reduced ...

This study assessed the concentrations of cadmium in the gills, livers and muscles of a commercially important tilapia fish (Sarotherodon melanotheron) from Aby Lagoon in Adiaké, Côte dIvoire, between January and December, 2010. The organisms were grouped into two composite samples (juvenile and adult) of five individuals. Levels of cadmium were determined in tissues using Perkin-Elmer (AAnalyst 200) Atomic Absorption Spectrophotometry (AAS) after a digestion method. Fish muscle appeared to have a significantly higher tendency to accumulate cadmium (1.19-5.18 µg/g dw) while gills and livers had minimum concentrations (0.07-1.32 and 0.12-1.25 µg/g dw). This study has revealed that the concentrations of Cd in Sarotherodon melanotheron muscle tissue were above the maximum acceptable concentrations for human consumption, thus precautions need to be taken in order to prevent future contamination.

Ovaries of Oreochromis mossambicus exposed to sublethal concentrations of nickel sulphate (0.5 mg/1 and 1.0 mg/1) were histologically analyzed. Changes following exposure to 0.5 mg/1 nickel sulphate include irregularities in the shape of egg follicles, subcellular oocyte damage, lifting off of the theca layer and proliferation of connective tissues. In the ovaries exposed to 1.0 mg/1 nickel sulphate, degenerative changes are worse. Invasion by connective tissues is extensive, oocytes have bizarre shapes, yolk granules are scattered in the interfollicular spaces, abnormal growths are evident and previttelogenic oocytes abound.. Nickel is a toxicant in Oreochromis mossambicus ovaries ...

TY - JOUR. T1 - Assessment of heavy metals in tilapia fish (Oreochromis niloticus) from the Langat River and Engineering Lake in Bangi, Malaysia, and evaluation of the health risk from tilapia consumption. AU - Taweel, Abdulali. AU - Shuhaimi-Othman, M.. AU - Abas Kutty, Ahmad. PY - 2013/7/1. Y1 - 2013/7/1. N2 - Concentrations of the heavy metals copper (Cu), cadmium (Cd), zinc (Zn), lead (Pb) and nickel (Ni) were determined in the liver, gills and muscles of tilapia fish from the Langat River and Engineering Lake, Bangi, Selangor, Malaysia. There were differences in the concentrations of the studied heavy metals between different organs and between sites. In the liver samples, Cu,Zn,Ni,Pb,Cd, and in the gills and muscle, Zn,Ni,Cu,Pb,Cd. Levels of Cu, Cd, Zn and Pb in the liver samples from Engineering Lake were higher than in those from the Langat River, whereas the Ni levels in the liver samples from the Langat River were greater than in those from Engineering Lake. Cd levels in the fish ...

Eight experimental diets representing two levels of vitamin E (low 100 IU /kg diet and high 300 IU/kg diet) with four levels of selenium ( 0;2 ; 4 ; 8 mg/kg diet ) were tested on hybrid tilapia (-Qr-niloiieusX JX~mweu8~ ) for a period of 120 days . The study was performed in outdoor cement ponds, each divided to units by nets with an area of 10m each. Each treatment was performed in duplicates, using 40 experimental fish with an initial weight of 48.83 g on the average . After the adaptation period, the fish were fed on the experimental diets at a rate of 3% of the treatment bibmass dialy, divided into two equal portions at 10. 0 a.m and 2 p.m. Water temperature ranged between 28J to 3L5 °C during the experimental period. Water quality parameters (dissolved oxygen, ammonia oED were within the permissible levels for tilapia. Results obtained^ surhmenzed/in the followingr 1-Hybrid tilapia fea on 2mg Se with 300 IU vitamin E/kg diet had significantly higher (p | 0.05) specific growth rate (SGR), feed

Author(s): Rodriguez Cruz, Sandra I; Phillips, Marjorie A; Kültz, Dietmar; Rice, Robert H | Abstract: Among the adaptations of aquatic species during evolution of terrestrial tetrapods was the development of an epidermis preventing desiccation. In present day mammals, keratinocytes of the epidermis, using a membrane-bound transglutaminase (Tgm1), accomplish this function by synthesizing a scaffold of cross-linked protein to which a lipid envelope is attached. This study characterizes the abilities of two homologous transglutaminase isozymes in the teleost fish tilapia to form cross-linked protein structures and their expression in certain tissues. Results indicate they are capable of membrane localization and of generating cellular structures resistant to detergent solubilization. They are both expressed in epithelial cells of the lip, buccal cavity and tips of gill filaments. Adaptation of transglutaminase use in evolution of terrestrial keratinocytes evidently involved refinements in tissue

Thamotharan, M.; Zonno, V.; Storelli, C.; Ahearn, G.A., 1996: Basolateral dipeptide transport by the intestine of the teleost Oreochromis mossambicus

Lookup HS Codes for Saudi Arabia i 03.05.64 -- Tilapias (Oreochromis spp.), catfish (Pangasius spp., Silurus spp.,Clarias spp., Ictalurus spp.), carp (Cyprinus carpio, Carassius carassius, Ctenopharyngodon idellus, Hypophthalmichthys spp., Cirrhinus spp., Mylopharyngodon piceus), eels (Anguilla spp. Avalara LandedCosts helps determine your duty rates and other import taxes for Saudi Arabia.

Sen, Sorphea, 2010. Effect of stocking density and fertilization on the growth performance of Tilapia (Oreochromis spp.) fed rice bran, water spinach and duckweed in pond and paddy field . Second cycle, A1E. Uppsala: SLU, Dept. of Animal Nutrition and Management ...

The cDNA encoding the glycoprotein α (GPα) subunit of tilapia (Oreochromis mossambicus) was partially cloned using RACE-polymerase chain reaction (PCR) technique. The amplified cDNA was found to be 583 bases long, and to consist of a portion of the signal peptide, the full sequence encoding the mature peptide (94 amino acids) and the 3′ untranslated region. Northern blot analysis revealed a single band of approximately 600 bp. Alignment of the deduced amino acids of the mature protein showed that the tilapia GPα subunit shares more than 80% identity with that of other perciform fish (i.e. striped bass, sea bream and yellowfin porgy) and less than 70% with that of more taxonomically remote fish and other vertebrates. Exposure of dispersed tilapia pituitary cells to salmon gonadotropin-releasing hormone (sGnRH) elevated GPα mRNA levels via both PKC and cAMP-protein kinase A (PKA) pathways. The transcript levels were also regulated by pituitary adenylate cyclase activating polypeptide (PACAP) and

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In Egypt, four species of Tilapia have been described based on morphometric, meristic and cytotaxonomical characteristics. These species are Tilapia zillii, Oreochromis niloticus, Oreochromis aureus and Sarotherodon galilaeus. The accurate identification of these fishes is complicated by the high variation in these characters,similarity among species and in some cases by the size of the fish. In this paper, we examined the use of polymerase chain reaction (PCR)and restriction fragment length polymorphisms (RFLPs) analysis of the nuclear small subunit ribosomal RNA gene (srDNA) for molecular identification of Tilapia spp. in Egypt. The present study aims to evaluate such advanced molecular biological approach for identification of Tilapia spp. Genomic DNA was extracted from the four species of Tilapia. About 2000 bp 18S ribosomal DNA was amplified by PCR using specific primers. The technique of restriction fragment length polymorphisms was used to identify the specific 18S rDNA for each species. O.

In India, tilapia fish is very popular and many people love tilapia because it is full of nutrients. Know about the 10 health benefits of tilapia fish.

Sep 28, 2017. On September 26, the Hawaii Board of Agriculture voted to move Oreochromis niloticus, also known as Nile Tilapia, from Restricted List A (for research only) to List B (for commercial production). This rule change is being hailed as a major victory for tilapia producers in the state. Several Oahu farmers and aquaculture industry stakeholders presented testimony to the Board in favor of the rule change, including CTSA Industry Advisory Chairman (IAC) Ron Weidenbach, IAC member Fred Mencher and CTSA Technical Committee member Tom Iwai.. We are thankful for finally having the Nile tilapia listed on the Restricted B List for commercial culture as we have been advocating for this rule change for more than 20 years, exclaimed Mr. Weidenbach, whose family owns and operates a tilapia farm on Oahus North Shore and also leads the Hawaii Aquaculture and Aquaponics Association. The Nile tilapia is the preferred tilapia species for freshwater aquaculture worldwide due to its fast growth and ...

Discussion. The spatial distribution of water quality variables showed the pollution gradient differed amongst the sampling sites (return water dam , Flag Boshielo Dam , Luphephe-Nwanedi Dams), especially for trophic status variables (ammonia, nitrates, nitrites, orthophosphates and sulphates), turbidity, conductivity, TDS and metals (lead and aluminium). The Luphephe and Nwanedi tributaries flow through areas of natural grassland, interspersed with areas of subsistence cultivation. There is very little urbanisation; as a result, the waters are relatively uncontaminated. Results from this study were consistent with previous work describing the Luphephe-Nwanedi Dams as essentially unpolluted (Oberholster et al. 2009) and the Flag Boshielo Dam as impacted by a combination of mining and agricultural effluents (Ashton 2010; De Villiers & Mkwelo 2009). The results further demonstrate that the return water dam is a polluted site, with high levels of nutrients and metals.. Parasite communities at the ...

The urination pattern of the Mozambique tilapia (Oreochromis mossambicus) depends on social context, and the olfactory potency of urine released depends on social rank (males) and reproductive status (females). This strongly suggests that urine mediates chemical communication in this species. The current study tested, firstly, whether urine production rate depends on sex or social status and, secondly, whether differences in urination pattern and volume of urine stored are associated with variation in the morphology of the urinary bladder. Finally, the effect of urination during aggressive male-male interactions was assessed. Urine production in catheterized fish depended neither on sex nor social status (males). Nevertheless, males had larger kidneys than females. Dominant males had heavier urinary bladders than subordinate males or females, mainly due to enlarged muscle fibres, thicker urothelium and a thicker smooth muscle layer. In male pairs wherein urination was prevented by temporary ...

3 University of Kalyani, Fishery Extension Laboratory, Department of Zoology, Kalyani, Nadia (West Bengal)-741235. India DOI : 10.4194/1303-2712-v17_3_05 Viewed : 833 - Downloaded : 571 The present investigation is about change in antioxidant enzymes and protein profile in Oreochromis mossambicus and Channa punctatus due to toxicity induced by application of fungicides in paddy -cum-fish ecosystem in India. Antioxidant enzymes like Lactate dehydrogenase (LDH), Malate dehydrogenase (MDH) and Peroxidase (Pox) are used as biomarkers for toxicological study. Oreochromis mossambicus and Channa punctatus were exposed to different concentration of Azoxystrobin 23% SC and Hexaconazole 5% SC respectively and LC50 was determined. LC50 for Amister was detected to be 0.008 ml/lit and that for Contaf plus was found to be 0.025 ml/lit. In case of Oreochromis mossambicus 1/2.5th, 1/5 th and 1/7.5th of LC50 (0.0032 ml/lit, 0.0016 ml/lit and 0.001 ml/lit) were selected for chronic sub-lethal study. For Channa ...

The Nile tilapia, Oreochromis niloticus, is a tropical fish species of commercial importance in both aquaculture and in the wild. It plays a great role in human nutrition and food security. River Ruiru is one of the rivers faced with pollution from nearby industries. It is inhabited by various species of fish such as tilapia and common carp, which, may be harvested by surrounding communities for food. High levels of heavy metals disrupt normal reproductive process in fish. Besides, it has been reported that edible fish contaminated with heavy metals has deleterious effects on the health of humans and other animals that consume them. There is no documented information on the association between heavy metals and the reproductive biology of Oreochromis niloticus in River Ruiru. This study was aimed at assessing the level of heavy metals in fish ovaries and their association with selected reproductive parameters in the reproductive cycle of O. niloticus. Fish samples were collected monthly, for 8 ...

Todays recipe is Crispy Tilapia Fish Fry. This is my first fish recipe on the blog. It is an easy starter dish. You can choose any fish variety for this recipe, I have used tilapia fish. Enjoy fish fry with any chutney of your choice along with onion and lemon. Fish fry can also be served as side dish with dal rice or chapati.. ...

Pet Food / Fish Feed Production Line endues pet food with the amount of nutrition, digestible structure, novel shape, and unique taste to meet with the needs of modern market. High protein Tilapia Fish Feed Extruder machinery is extruded into a variety of shapes such as granule or power, and can be floating or sink in water. Potato chip production line have different production capacity for this automatic Pet Food / Fish Feed Production Line with the best quality and most competitive price.With Potato chip production line new technology of combination screws,our Pet Food / Fish Feed Production Line is applied to produce different pet food with various raw material and nutrient elements.The High protein Tilapia Fish Feed Extruder machinery technology parameters are controlled precisely.

Tilapia fish cultivating is a little known development industry. Unlike other industries, beginning a recirculating tilapia fish farm is simpler .

Huertas M, Hagey L, Hofmann AF, Cerdà J, Canario AVM, Hubbard PC. Olfactory sensitivity to bile fluid and bile salts in the European eel (Anguilla anguilla), goldfish (Carassius auratus) and Mozambique tilapia (Oreochromis mossambicus) suggests a broad range sensitivity not confined to those produced by conspecifics a. J Exp Biol. 2010;213(2):308-17. doi:10.1242/jeb.033142 ...

A new virus that has decimated tilapia populations in Ecuador and Israel has now been found in Egypt, according to a new report from WorldFish and the University of Stirling.. Scientists are now trying to establish a firm link between the virus and a recent surge in mortalities in Egyptian farmed tilapia.. Tilapia Lake Virus (TiLV) is a global threat to the tilapia farming industry, which is worth US$7.5bn per year.. In recent years, fish farms in Egypt have seen increased mortality of farmed tilapia in the summer months, so-called summer mortality. Epidemiological surveys indicated that 37% of fish farms were affected in 2015 with an average mortality rate of 9.2% and an estimated economic impact of around US$100 million/year.. Identifying the cause of and preventing these fish deaths is of significant importance in Egypt, which relies on domestic aquaculture for 60% of fish consumed with tilapia making up 75% of that production. Tilapia is the cheapest form of animal protein in the country, ...

So I love having Tilapia at the house because its so easy to cook. But speaking with my doctor once he had mentioned to me that Tilapia was a vulnerable fish that had Omega 6 fatty acids and those fatty acids become inflammatory instead of anti-inflammatorywhen exposed to hight heat.. I did some research of my own and have not found too much but did find that these Omega 6 fatty acids are found in the farm-raised Tilapia based on what the tilapia is fed in order to raise it cheap and make Tilapia inexpensive.. The doc did tell me that in order to protect the Tilapia and get the most health benefits from it, the best way to cook it is wrapped in aluminum foil, baked and preserved in lemon and onions. As opposed to one of my favorite methods…cooked in high heat until crispy- Yummy!. As a result of this conversation, I have eliminated Tilapia as a staple in our familys diet. We eat plenty of salmon and tuna and we all take omega 3 supplements a few times a week (more on supplements another ...

The specificity of a medaka vitellogenin (Vtg) enzyme-linked immunosorbent assay (ELISA) kit was tested on adult hybrid tilapia to determine if vitellogenin could be successfully measured in tilapia using this method. Adult hybrid (Orechromis niloticus x Oreochromis mossambicus x Oreochromis aureus) tilapia were injected with 17â-estradiol (E2) at 5 ìg/g body weight (b.w.) in two separate experiments and exposed to 2.5 ìg/g b.w. E2 through aquaria water in a third experiment. All fish were exposed to solvent controls (50/50 PBS/ethanol, or 59/41 PBS/ ethanol) proportional to the volume of estradiol solvent used. Experiment 1 was terminated due to a decrease in fish health and unexpected mortalities. Experiment 2 was continued though there was again a decrease in fish health and mortalities before experiment was completed. According to one-way ANOVA, Experiment 2 treatment groups were significantly different ( ...

The apparent absence of established dosage regime for medicating tilapia with fluoroquinolones in the country necessitated investigating the absorption and tissue distribution of ciprofloxacin, since dosage regimes conform to accepted standards of pharmacokinetic studies. Ciprofloxacin pharmacokinetic studies were conducted on 76 hybrid tilapia weighing between 100 and 200 grams divided into two groups with each subjected to bath administration of ciprofloxacin at two different concentrations. The fishes in groups 1 and 2 were exposed by bath to 50 mg and 25 mg respectively of ciprofloxacin per litre of water. Tissue and blood samples were collected at 0.5h, 1h, 2h, 4h, and 8h during medication and drug withdrawal at 24h, 48h, and 72h, to quantify their ciprofloxacins by Enzyme Linked Immunosorbent Assay (ELISA). Peak serum concentration of ciprofloxacin in group 1 was 2,251±877 μg/L at 8 h while for group 2; it was 2,226±174 μg/L at 4 h exposure time. The t- test comparing the means of the ...

TY - JOUR. T1 - Osmoregulatory actions of growth hormone and prolactin in an advanced teleost. AU - Sakamoto, Tatsuya. AU - Shepherd, Brian S.. AU - Madsen, Steffen S.. AU - Nishioka, Richard S.. AU - Siharath, Kimmakone. AU - Richman, N. Harold. AU - Bern, Howard A.. AU - Grau, E. Gordon. PY - 1997/4. Y1 - 1997/4. N2 - To date, growth hormone (GH) is known to contribute to seawater adaptation only in salmonid fishes (primitive Euteleostei). Accordingly, the effects of homologous GH and two forms of homologous prolactin (PRL177 and PRL188) on hypoosmoregulatory ability and gill Na+,K+-ATPase activity in a more advanced euryhaline cichlid fish, the tilapia (Oreochromis mossambicus), were examined. Following adaptation of hypophysectomized fish to 25% seawater for 3 weeks, fish were given four injections of hormone or vehicle. They were then exposed to 100% seawater for 12 hr and examined for changes in plasma osmolality. Tilapia GH (0.02 and 0.2 μg/g) significantly improved the ability of ...

Paternal mouthbrooders are species where the male looks after the eggs. Paternal mouthbrooders include the arowana, the mouthbrooding betta Betta pugnax, and sea catfish such as Ariopsis felis. Among cichlids, paternal mouthbrooding is relatively rare, but is found among some of the tilapiines, most notably the black-chin tilapia Sarotherodon melanotheron.. In the case of the maternal mouthbrooders, the female takes the eggs. Maternal mouthbrooders are found among both African and South American cichlids. African examples are the haplochromines, such as the mbuna, Astatotilapia burtoni, and the dwarf mouthbrooders Pseudocrenilabrus multicolor, and some of the tilapiines, such as Oreochromis mossambicus and Oreochromis niloticus. The South American maternal mouthbrooders are all members of the Geophaginae subfamily (commonly known as eartheaters on account of their substrate-sifting feeding mode) such as Gymnogeophagus balzanii and Geophagus steindachneri.. Biparental mouthbrooding occurs where ...

BACKGROUND: ICI 182,780 (ICI) belongs to a new class of antiestrogens developed to be pure estrogen antagonists and, in addition to its therapeutic use, it has been used to knock-out estrogen and estrogen receptor (ER) actions in several mammalian species. In the present study, the effects and mechanism of action of ICI were investigated in the teleost fish, sea bream (Sparus auratus).METHODS: Three independent in vivo experiments were performed in which mature male tilapia (Oreochromis mossambicus) or sea bream received intra-peritoneal implants containing estradiol-17 beta (E2), ICI or a combination of both compounds. The effects of E2 and ICI on plasma calcium levels were measured and hepatic and testicular gene expression of the three ER subtypes, ER alpha, ER beta a and ER beta b, and the estrogen-responsive genes, vitellogenin II and choriogenin L, were analyzed by semi-quantitative RT-PCR in sea bream.RESULTS: E2 treatment caused an increase in calcium levels in tilapia, while ICI alone ...

The bacteriological quality of both wild and cultured Nile Tilapia, Oreochromis niloticus, sourced in some area of Ibadan, Southwest, Nigeria was studied. Bacteria flora of the skin and stomach of fish samples were examined and compared statistically (t-test independent). The resistance of bacterial isolates to commonly used antibiotics was also studied. Total aerobic bacteria count [colony forming unit: CFU = 159.50.13 ± 72, t < 0.01] with significant difference in the skin and Enterobacteriaceae count [(CFU) = 74.08 ± 5.55] with significant difference in the stomach were obtained in the Nile tilapia. The bacteria in the genera Staphylococcus, Escherichia, Proteus, Bacillus, Klebsiella, Micrococcus, Serratia, Pseudomonas, Salmonella and Streptococcus were isolated and have been proven to be of great public health significance. About 87.5% of the tested isolates were resistant to augmentin, 83.33% to cotrimoxazole and nalidixic acid. In addition, 79.17% of the isolates were resistant to tetracycline,

We used the Environment Health Risk Assessment framework to assess the health risks due to Pb and Cd in tilapia and water spinach caught/harvested along the Nhue River, in Kim Bang, Ha Nam in 2013. In total, 81 samples of water, tilapia and water spinach (27 of each) were taken from Nhue River and analysed for lead (Pb) and cadmium (Cd) pollution. 142 consumers were interviewed regarding the consumption levels of tilapia and water spinach. The analysis found that 100% samples of water spinach were contaminated with Pb and Cd; 100% and 96.3% of the tilapia samples were contaminated with Pb and Cd. The concentrations of Pb and Cd in water spinach were in the ranges of 29 - 385 µg/kg and 0.79 - 27 µg/kg. Their ranges in tilapia samples were 15 - 389 µg/kg and 0.12 - 8.8 µg/kg. The average consumptions of water spinach and tilapia were estimated at 108.9 g per meal and 132 g per meal, respectively. Local residents consumed 75 water spinach meals per year, therefore Pb and Cd intakes were 13.6 ...

Objective. To determine and evaluate the genetic diversity of six populations of red hybrid tilapia, with the purpose to assess the potential benefit of a future breeding program conducted at the Research Center for Aquaculture (Ceniacua), Colombia. Material and methods. A total of 300 individuals, representing a wide genetic variability, were genotyped using a fluorescent microsatellite marker set of 5 gene-based SSRs in 6 different farms belonging to 4 States of Colombia. Results. The result showed that the mean number of alleles per locus per population was 8.367. The population 5 had the highest mean number of alleles with 9.6 alleles, followed by population 4 with 9.4 alleles, population 2 with 9.2, population 3 with 8.0, population 1 with 7.2 and population 6 with 6.8 alleles. The analysis of the distribution of genetic variation was (17.32%) among population, while among individuals within populations was (28.55%) and within individuals was high (54.12%). The standard diversity indices ...

Diseases at hatchery stage are among challenges that hinder optimal mariculture development in Tanzania. Information on the occurrences of bacterial infections in mariculture hatchery in the country is limited. Thus, this study was conducted to determine the occurrence and antibacterial sensitivity of bacteria species in Rufiji tilapia and hybrids fingerlings of Nile tilapia female crossbreed with Rufiji tilapia male farmed at different salinity at Institute of Marine Science (IMS) - Mariculture Center in Pangani- Tanga. A total of 120 fingerlings (2.07-3.49g for Rufiji tilapia (RF), 6.61- 6.98g for hybrids (HB) and 250ml water samples were collected from three replicated tanks of about 30 m 2 set at water salinity level of 2, 15, 25 and 35. Bacterial loads were determined as CFU ml -1 . Isolated bacteria were identified to genus or species level. Molecular identification was done for Staphylococcus and Bacillus spp. Antibiotic sensitivity test was conducted using the following antibiotics; ...

Oreochromis amphimelas, Oreochromis andersonii, Oreochromis angolensis, Oreochromis aureus, Oreochromis chungruruensis, Oreochromis esculentus, Oreochromis hunteri, Oreochromis ismailiaensis, Oreochromis jipe, Oreochromis karomo, Oreochromis karongae, Oreochromis korogwe, Oreochromis lepidurus, Oreochromis leucostictus, Oreochromis lidole, Oreochromis macrochir, Oreochromis malagarasi, Oreochromis mortimeri, Oreochromis mossambicus, Oreochromis mweruensis, Oreochromis niloticus, Oreochromis pangani, Oreochromis pangani girigan, Oreochromis pangani pangani, Oreochromis placidus, Oreochromis placidus placidus, Oreochromis placidus ruvumae, Oreochromis rukwaensis, Oreochromis saka, Oreochromis salinicola, Oreochromis schwebischi, Oreochromis shiranus, Oreochromis shiranus chilwae, Oreochromis shiranus shiranus, Oreochromis spilurus, Oreochromis spilurus niger, Oreochromis spilurus percivali, Oreochromis spilurus spilurus, Oreochromis squamipinnis, Oreochromis tanganicae, Oreochromis upembae, ...

The present study dealt with the haematological, biochemical and istopathological impacts of different sub lethal concentrations of ethanol on a euryhaline teleost Oreochromis In05.sambicu.5 (Peters).Studies carried out using GC indicated an increase in blood ethanol oncentration of the fish which mainly arose due to fishes entering into a state of hypoxia which explains ethanol production as an ubiquitous anaerobic end product, which gets accumulated whenever metabolic demand exceeds the mitochondrial oxidative potential. The very low amount of ethanol detected in the control group ofO mossambicns was mainly due to the activity of microorganisms in the gut ofO. Nzossambicus.Oedcma observed in the present study, is a defense mechanism that reduces the branchial superficial area of the fish which comes in contact with the external milieu. These mechanisms also increase the diffusion barrier to the pollutant. Dilation of the blood vessels is due to increased permeability helping in the free ...

Biological Treatment of Broad Bean Hulls and its Evaluation through Tilapia Fingerlings (Oreochromis Niloticus) Feeding Abstract.

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Tilapia is a popular but controversial fish. This article examines the evidence and reviews the benefits and dangers of eating tilapia.

Social plasticity is a pervasive feature of animal behavior. Animals adjust the expression of their social behavior to the daily changes in social life and to transitions between life-history stages, and this ability has an impact in their Darwinian fitness. This behavioral plasticity may be achieved either by rewiring or by biochemically switching nodes of the neural network underlying social behavior in response to perceived social information. Independent of the proximate mechanisms, at the neuromolecular level social plasticity relies on the regulation of gene expression, such that different neurogenomic states emerge in response to different social stimuli and the switches between states are orchestrated by signaling pathways that interface the social environment and the genotype. Here, we test this hypothesis by characterizing the changes in the brain profile of gene expression in response to social odors in the Mozambique Tilapia, Oreochromis mossambicus. This species has a rich repertoire of

石橋 泰典 , 家戸 敬太郎 , 池田 静徳 , 村田 修 , 宮下 盛 , 熊井 英水 水産増殖 = The aquiculture 50(3), 347-353, 2002-09-20 日本農学文献記事索引 参考文献31件 ...

This study had the objective of evaluating the performance of Nile tilapia, in initial growth phase, with the supplementation of fucoidan, extracted from brown algae, a..

Fish has been playing an important role in nutritional, profitability and livelihood security of people in many developing countries. This work was carried out to study t..

The diversity of habitats occupied by cichlids is matched by the number of mating systems they employ. In fact, the local ecological conditions are an important indicator of the mating system used, which may vary within the same species. The most primitive condition is monogamy, with males and females essentially monomorphic, excepting some coloring details. Courtship rituals and parental care are common among monogamous pairs. Some cichlids are polygynous: males fertilize the eggs of more than one female. In this system, males might defend a territory that females visit to spawn (only once during the season), two females may defend a territory overlapping that of a male (bigamy), or a male may dominate a harem of multiple females. Cichlids also employ polyandry, in which females mate with several males. In one extraordinary case, sex roles are essentially reversed. Sarotherodon melanotheron males nurture eggs and fry in the mouth for 15 days after spawning, while females are capable of spawning ...

Free Online Library: Levels of heavy and other metals in tilapia species raised in different ponds and resistant pattern of associated Enterococcus species.(Original Article, Report) by Advances in Environmental Biology; Environmental issues Properties Fish ponds Contamination Fishes Heavy metals Distribution Tilapia Health aspects

Fish is a nutritious food and an excellent source of animal protein in the human diet containing many vitamins and minerals that are essential for the human body. In Malawi, fish is the major source of affordable dietary protein for humans. Lake Malawi tilapia (Oreochromis karongae) locally known as Chambo, is the most preferred and highest value commercial food fish species obtained from Lake Malawi. Several methods are used to prepare/cook the fish viz.: boiling, deep frying in edible cooking oil, grilling, and/or roasting over fire. However, the fact that cooking alters the nutrient content in foods underscores the need to understand nutritional effects of different food cooking/processing methods. This study investigated effect(s) of cooking fresh fish (Lake Malawi tilapia) by boiling, roasting, pan frying and, using a locally made fireless cooker) on its proximate (protein, fat, ash and moisture) and mineral (calcium, magnesium, zinc, iron and phosphorus) composition. Highest and lowest ...

TY - JOUR. T1 - Changes in the quality of fishburger produced from Tilapia ( Oreochromis niloticus ) during frozen storage (-18 degrees C). AU - Tokur, B.. AU - Polat, A.. AU - Beklevik, G.. AU - Ozkutuk, S.. PY - 2004. Y1 - 2004. N2 - In this study, the chemical and sensory qualities of fishburger produced from tilapia (Oreochromis niloticus) were investigated during frozen storage (-18 degreesC) over 8 months. The ratios of crude protein, lipid, moisture, crude ash, and polyunsaturated fatty acids in tilapiaburger were found to be 17.82%, 5.29%, 66.68%, 2.56% and 7.95% respectively. At the end of the study, the total volatile basic nitrogen value was found to have fluctuated throughout the storage periods. The highest thiobarbituric acid value was found at the 7th month as 0.142 mg malonaldehyde/kg. The peroxide value was 0.18 meq/kg at the beginning of the storage but increased to 5.03 meq/kg at 6th month of storage and then decreased to 0.82 meq/kg at the 8th month. The level of free fatty ...

Despite teleosts being the largest and most diverse group of vertebrates, fish models currently used to study photoperiodic effects on fish physiology have been limited to a few species, most of which are temperate seasonal breeders. The overall aim of this work was to expand our knowledge on circadian biology and environmental physiological effects in Nile tilapia (Oreochromis niloticus niloticus), a continuous breeding species of tropical-subtropical origin. The circadian light axis of Nile tilapia is described with regards to melatonin production. Circadian melatonin profiles of fish under 12L:12D photoperiods were observed to be low at day and high at night, suggesting melatonin to be an entraining signal as observed in all other vertebrates. When constant light (LL) was used, such day and night fluctuations where abolished. However when fish where exposed to constant darkness (DD) a strong robust endogenous melatonin rhythm was found, suggesting the presence of circadian oscillators in this ...

Secretory proteins in the skin mucus of Nile tilapia (Oreochromis niloticus) are modulated temporally by photoperiod and bacterial endotoxin ...

Abstract Traditionally, fish oil (FO) has been used extensively in aquafeeds. The stagnation in global fish oil production coupled with an increased demand for its use in aquaculture feeds, especially salmonid feeds, has greatly inflated fish oil prices. Therefore, in order to sustain the rapid growth of the tilapia industry, the dependence on these commodities in feeds should be reduced through use of cheaper and more sustainable sources of dietary lipids, such as palm oil. This study therefore investigated several, previously poorly understood, effects of palm oil on reproductive performance of the commercial tilapia species, Oreochromis niloticus; which currently ranks as second most popular species in world aquaculture. In the present study broodstock were fed on experimental diets at full and half ration regimes throughout their entire life cycle from exogenous feeding. Studies were conducted in standardised and controlled hatchery conditions, thereby reducing the potential influence of ...

In an effort to address under- and malnourishment in Haiti, feed formulations for Nile tilapia (Oreochromis niloticus) were developed using regionally available and sustainable foodstuffs that are not commonly eaten by people, to support the development of aquaculture-based protein in Haiti. Moringa leaves (Moringa oleifera), spent brewers grain (Hordeum vulgare), wet and dried spent brewers yeast (Saccharomy cescerevisiae), cassava root (Manihot esculenta), breadfruit (Arthocarpus altilis) and blood meal were examined as ingredients in six feed formulations developed using linear programming. Two experiments with six experimental isonitrogenous diets were conducted under controlled laboratory conditions to examine fish growth, and feed palatability, digestibility and pellet stability. Results from Experiment 1 indicated that tilapia fingerlings had better growth (120% weight gain), feed conversion, efficiency and palatability fed with Diet2 compared with Diet 1 (58% weight gain) after 69 ...

I had recently come across a jar of tamarind paste in the back of my fridge that I had picked up a while ago and hardly used. I wanted to experiment some more with the tamarind and while I was searching for recipes I came across this one for tilapia baked in a tamarind sauce which sounded really good. I like baking fish in sauces as they come out nice and moist full of the flavour of the sauce. This particular tamarind sauce is a Thai recipe. One of the things that I like the most about Thai recipes is that they tend to try to balance sweet, sour, spicy and salty. It is a god idea to sample the sauce after everything has been added to it and then tweak it to your tastes. The tilapia baked in tamarind sauce turned out really well! The tilapia was nice and moist and the tamarind sauce was really tasty. I served the tilapia with some coconut jasmine rice which provided a refreshing contrast to the flavourful tilapia. So far I have really been enjoying tamarind and I look forward to using it again ...

Oreochromis niloticus DMO protein: DMO - DM-domain gene in ovary; isolated from the fish Tilapia, Oreochromis niloticus; amino acid sequence in first source; GenBank AF203490

Pseudomonas aeruginosa (P. aeruginosa) produces a suite of virulence factors that are coordinated by Quorum Sensing (QS) contributing to its disease-causing ability in aquaculture. The present study is first of its kind to obtain information regarding the presence and distribution of five QS genes, three virulence genes viz: lasI, lasR, rhlI, rhlR, rhlAB, toxA, aprA and plcH and seven of the Extended-spectrum βlactamases (blaVEB, blaPER, blaTEM,, blaSHV, blaCTX-M1, blaCTX-M2 and blaCTX-M3) of Pseudomonas species isolated from fish meat by direct PCR. Bacterial identification was based mainly on conventional biochemical techniques using the Vitek 2, automated system. Phenotypic sensitivity of antibiotics was established by the agar disc diffusion technique through 16 various antimicrobial drugs. Quantification of their in vitro production of numerous virulence genes outside the cell that are QS dependent namely, pyocyanin, elastase, alkaline protease, biofilm and cytotoxicity of Vero cell was as

The study was carried out to evaluate the antioxidant activity and α-amylase activity inhibitory potential of Sarotherodon galillaeus muscle protein hydrolysates. Sarotherodon galillaeus muscle protein isolate was hydrolysed with three digestive proteases namely trypsin, chymotrypsin and pepsin. Degree of hydrolysis was determined. The antioxidative potential of the hydrolysates was investigated using DPPH radical scavenging, ferric reducing power, hydrogen peroxide scavenging and metal chelating activity. The ability of the hydrolysates to inhibit the activity of sugar-hydrolysing enzyme was also evaluated. Highest degree of hydrolysis was obtained with pepsin (55.86%) followed by trypsin (47.11%) and chymotrypsin (42.36%) after 6 hrs of hydrolysis. The half maximal inhibitory concentration (IC50) of hydrolysates produced by trypsin, chymotrypsin and pepsin for DPPH radical scavenging activity were 1.26 ± 0.95, 0.98 ± 0.07 and 1.18 ± 0.34 mg/ml respectively. Trypsin-produced hydrolysates ...

Tribulus extract has a hepatoprotective effect against acetaminophen-induced toxicity in a freshwater fish (Oreochromis mossambicus).

Heritability estimates were determined for six phenotypes in Oreochromis niloticus for 180, 210 and 300 days old: body weight (BW), total length (TL), standard length (SL), body height (BH), caudal tail height (CTH) and head length (HL). Heritability estimates were calculated by half-sib analysis from an experiment that contained 3 paternal half-sib families and 11 full-sib families. Heritabilities ranged from 0.00-0.88. These results suggest that because heritabilities of BW, TL, SL, BH, CTH and HL for sires in Oreochromis niloticus for 180 and 210 days old are low, family selection or progeny testing can proposed for selection. But, therefore heritabilities of all traits both male and female for 300 days old are high, selection will propose for are mass selection.. ...

Swim-up fry (average weight, 14 mg) were obtained from Oreochromis niloticus (Chitralada strain) held in concrete tanks. In experiment 1 (1985), fry were fed diets treated with 17 alpha-methyltestosterone (MT) or progesterone at 60 mg/kg for 40 days. Control fish were fed untreated diet. Fingerlings (average weight, 2.86 g) were subsequently stocked at 1/square m. in earthen ponds receiving septic tank slurry at 150 kg COD/ha/day and fine rice bran as supplementary feed for about 5 months. In experiment 2 (1986), similar procedures were followed but the fry were fed MT at 40 mg/kg for 40 days and pond stocking rates of 1,3,5 and 7 fingerlings/sq. m were compared. Individual size, sex and stage of maturity were determined. In experiment 1, the average individual size was greatest in the MT-treated group (263 g), compared with the untreated (232 g) and progesterone-treated fish (189 g). The final size of fish in experiment 2 decreased significantly (P0.05) with density, from an average of 249 g at ...

Kirkland Tilapia Loins nutrition facts and nutritional information. Find calories, carbs, and nutritional contents for Kirkland Tilapia Loins and over 2,000,000 other foods at MyFitnessPal.com.

The effect of environmental color on animal physiology and behavior is a developing field. Studies have concentrated on showing the effects of environmental colors on some mammals (1), birds (2) and fish (3), but the mechanisms are still unknown. In fish, some studies have shown that environmental color affects growth (4-6), feeding (7-9), food conversion rate (10), stress (10,11), aggression (12), and egg development (13).. The present study describes the effects of environmental color on reproduction by the Nile tilapia, Oreochromis niloticus (L.), a fish used in laboratory studies and also significant for world aquaculture. Reproduction is an activity closely related to fish fitness, which may be improved by some environmental colors (11).. The study was conducted according to the ethical principles in animal research adopted by the Brazilian College of Animal Experimentation and was approved by the Bioscience Institute (UNESP) Ethics Committee for Animal Research (No. 121/02).. While the ...

The genetic organization and sequences of the group II capsule gene cluster of Aeromonas hydrophila PPD134/91 have been determined previously. The purified capsular polysaccharides can increase the ability of avirulent strain PPD35/85 to survive in naive tilapia serum but have no inhibitory effect on the adhesion of PPD134/91 to carp epithelial cells. In this study, the presence of group II capsules among 33 randomly chosen A. hydrophila strains was examined by electron microscopy and genetic analysis. Ten strains were found to produce group II capsules. A PCR detection system was developed to identify two types of group II capsules (IIA and IIB) based on their genetic organization in the region II gene clusters. Group IIA capsules in the authors' collection of A. hydrophila strains are mainly found in the O : 18 and O : 34 serogroups, while group IIB capsules are found in the O : 21 and O : 27 serogroups. The presence of group II capsules in A. hydrophila strongly correlates with the serum and

Domain architecture and assignment details (superfamily, family, region, evalue) for ENSONIP00000021546 from Oreochromis niloticus 76_1.0. Plus protein sequence and external database links.

Identifikasi bakteri patogen pada ikan Nila (Oreochromis niloticus) di lokasi budidaya ikan air tawar Kabupaten Kepulauan Sangihe

Interactions of dietary calcium and cholecalciferol (vitamin D3) were evaluated with fingerling blue tilapia using a 2 x 2 factorial design. Four purified diets were formulated to contain 34% crude protein from egg albumin and 3.20 kcal available energy/g. The basal diet (0.02% Ca) was supplemented with either 0 or 0.75% Ca (from CaC2-2H,O) and 0 or 2,000 IU vitamin D3/kg in a factorial arrangement. Experimental diets were fed in triplicate to groups of blue tilapia initially averaging 2.30 ︢0.09 g in 38-1 aquaria receiving water with 0.1 mg Ca/l for a period of 36 weeks. Significantly (P , 0.05) greater weight gain, bone and scale calcium, as well as bone and scale phosphorus values were observed for fish fed the calciumsupplemented diets as compared to fish fed the diets without supplemental. calcium. Supplementation of vitamin D3 produced some significant differences in these parameters, however; the differences were not consistent for all sampling periods. Based on these results, it is ...

The Sox transcription factor family is characterized with the presence of a Sry-related high-mobility group (HMG) box and plays important roles in various biological processes in animals, including sex determination and differentiation, and the development of multiple organs. In this study, 27 Sox genes were identified in the genome of the Nile tilapia (Oreochromis niloticus), and were classified into seven groups. The members of each group of the tilapia Sox genes exhibited a relatively conserved exon-intron structure. Comparative analysis showed that the Sox gene family has undergone an expansion in tilapia and other teleost fishes following their whole genome duplication, and group K only exists in teleosts. Transcriptome-based analysis demonstrated that most of the tilapia Sox genes presented stage-specific and/or sex-dimorphic expressions during gonadal development, and six of the group B Sox genes were specifically expressed in the adult brain. Our results provide a better understanding of gene

Calories in The Great Fish Co Farm Raised Tilapia Fillets. Find nutrition facts for The Great Fish Co Farm Raised Tilapia Fillets and over 2,000,000 other foods in MyFitnessPal.coms food database.

Issuu is a digital publishing platform that makes it simple to publish magazines, catalogs, newspapers, books, and more online. Easily share your publications and get them in front of Issuus millions of monthly readers. Title: Producción de Tilapia y Trucha, Author: Escuela Agrícola Panamericana, Zamorano, Name: Producción de Tilapia y Trucha, Length: 5 pages, Page: 1, Published: 2014-05-21

Agricultural managers are continually looking for ways to increase production while at the same time reduce costly inputs. One such way is an integration of two or more crops or production systems. Sustainability is a key word in our world today and one component of sustainability is the reduction of waste and the reuse of all available resources and refuse. Aquaponics is the combination of plant production and fish production whereby the byproducts of one system are used as an input for the other, thereby creating a symbiotic effect. One such system that has been used and shows promise is the combination of intensive production of tilapia (Oreochromis spp) and greenhouse production of lettuce (Lactuca sativa L.). Monoculture systems have traditionally relied on proven methods and inputs. However, in cross-cultural systems, what has proven to be standard practice for one production system may actually be harmful to the other production system. In intensive tank culture of fish, it is a common ...

All-male populations are used in tilapia (Oreochromis spp.) aquaculture because the culture of mixed sex populations often results in precocious maturation and early reproduction (Schreck, 1974; Mires, 1995). Furthermore, all-male tilapia populations are desirable because males achieve a larger final size than females (Macintosh and Little, 1995). Masculinization of tilapia fry by oral administration of 17a-methyltestosterone is considered the most successful method employed; however, under certain conditions this technique is sometimes less favorable. Furthermore, significant leakage of MT into the pond environment may occur from uneaten or unmetabolized food. This leakage poses a risk of unintended exposure of hatchery workers, as well as fish or other non-target aquatic organisms, to the steroid or its metabolites. In recent studies (Contreras-Sánchez, 2001), we found that masculinization of fry through dietary treatment with MT results in the accumulation of MT in sediments and causes the ...

17α, 20β-Dihydroxy-4-pregnen-3-one (DHP) is a maturation-inducing steroid in many teleost fish. Carbonyl reductase-like 20β-hydroxysteroid dehydrogenase (CR/20β-HSD) is a candidate enzyme responsible for DHP production during oocyte maturation in various fish, including Nile tilapia. However, a novel type of 17β-hydroxysteroid dehydrogenase, type 12-like (17β-HSD12L), is responsible for DHP production during oocyte maturation in masu salmon. 17β-HSD12 (presumably orthologous to salmon 17β-HSD12L) has been detected in Nile tilapia; however, its enzymatic activity and specific ability to convert the DHP substrate 17α-hydroxyprogesterone (17OHP) have not been examined. This study aimed to determine whether CR/20β-HSD or 17β-HSD12 is responsible for DHP production during oocyte maturation in the Nile tilapia. Mammalian expression vectors containing tilapia hsd17b12 or CR/20bhsd were transfected into HEK293T cells, followed by incubation with 17OHP. HEK293T cells transfected with hsd17b12 ...

There are two major sources of fish in Uganda; one is from aquaculture, the other from fishing in rivers and lakes. Different types of fish flourish in different water sources. The waters of Uganda contain an impressive array of fish species-over 90 in all. This count does not include the Haplochromis complex, which itself is made up of more than 200 species. Fish that are the target of most commercial and subsistence exploitation include species of Lates (Nile perch), Oreochromis (Nile tilapia), the herring-like Alestes, the catfishes Bagrus and Clarias, Hydrocynus (Tiger fish), the small pelagic sardine Rastrineobola, Protopterus (lungfish), and the haplochromines. Tilapia and Nile perch are the commonest types of fish in Uganda. Other fish types include tilapia, spat, cat fish, Nile tilapia, silver fish. The Nile perch (Lates niloticus) is locally known as Empuuta, especially in the central region. It is a native species to Lake Albert were it is locally known as Gur, the River Nile below ...

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 ...

OMETEPE - A territorial, omnivorous African fish that scientists say is pushing other native species out of their habitats in Lake Cocibolca has the National Assembly debating a bill to prohibit the introduction of exotic species into Nicaraguan waters.. Known commonly as tilapia, the nonnative fish species was introduced into the hemispheres biggest tropical lake as early as the 1970s. Still, critics blame a tilapia export farm on OmetepeIsland for making matters worse by cultivating 3,000 tons of tilapia annually in the unique freshwater ecosystem.. Alex Gutiérrez, production manager of the tilapia farm NICANOR, says scientists and politicians are exaggerating the environmental impact that the fish have on the lake.. Environmentalism is a trend right now, Gutiérrez told The Nica Times during a recent visit to Ometepe, where NICANOR manages 26 floating tilapia production cages off the volcanic islands southern shore.. We get blamed for a lot of what happens to the lake, he ...

Materials and Methods. Eighteen tilapia (Oreochromis niloticus) with weights of 50g, 150g and 350g grown in captivity and kept in a closed system of recirculating water in the Aquaculture Laboratory (LaQua) from the Veterinary School of Universidade Federal de Minas Gerais (UFMG) were used. The system allowed for the on-going maintenance of water quality and temperature at 26±0.5°C. The variables of water quality, dissolved oxygen, pH and temperature were monitored daily, and nitrite and total ammonia levels were measured weekly. The fish were fed a commercial diet with 36% crude protein twice daily in an amount close to 3% of the stored biomass.. The fish were divided into three groups by weight with six animals per group: group 1 consisted of 50 g fish, group 2 consisted of 150g fish, and group 3 consisted of 350g fish. The weights were chosen to provide the assessment of oocyte development in several stages. The animals were euthanised according to the protocol approved by the ethics ...

ID I3J7R3_ORENI Unreviewed; 5072 AA. AC I3J7R3; DT 11-JUL-2012, integrated into UniProtKB/TrEMBL. DT 11-JUL-2012, sequence version 1. DT 25-OCT-2017, entry version 39. DE SubName: Full=Ryanodine receptor 1b (skeletal) {ECO:0000313,Ensembl:ENSONIP00000004903}; GN Name=LOC100709030 {ECO:0000313,Ensembl:ENSONIP00000004903}; OS Oreochromis niloticus (Nile tilapia) (Tilapia nilotica). OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; OC Actinopterygii; Neopterygii; Teleostei; Neoteleostei; Acanthomorphata; OC Ovalentaria; Cichlomorphae; Cichliformes; Cichlidae; African cichlids; OC Pseudocrenilabrinae; Oreochromini; Oreochromis. OX NCBI_TaxID=8128 {ECO:0000313,Ensembl:ENSONIP00000004903, ECO:0000313,Proteomes:UP000005207}; RN [1] {ECO:0000313,Ensembl:ENSONIP00000004903} RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. RG Broad Institute Genome Assembly Team; RG Broad Institute Sequencing Platform; RA Di Palma F., Johnson J., Lander E.S., Lindblad-Toh K.; RT The Genome Sequence of ...

The function of the forebrain and the cerebellum in learning in the teleost fish Tilapia heudelotii macrocephala was studied. An avoidance conditioning paradigm with light or sound as the CS and shock as the US was used. The design of the four experiments performed was: Experiment I -- operations performed prior to training; forebrain ablated in experimental subjects; sham operations performed or olfactory bulbs ablated in controls; CS was light. Experiment II -- operations performed prior to training; forebrain ablated in experimental subjects; sham operations performed on controls; CS was sound. Experiment III -- operations performed after training; subjects first underwent sham operation and then olfactory bulb ablation, or only the latter; following a period of retesting, both lobes of the forebrain were ablated; CS was sound. Experiment IV, a and b -- operations performed prior to training; body of the cerebellum ablated in experimental subjects; sham operations performed on controls; CS ...

Although it is not an endemic fish in the country, the Philippines is now one of the worlds largest tilapia producers, according to a fishery expert who used to be the Philippine Councils executive director for Marine and Aquatic Research and Development.

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Abstract: The Effect of Different Plant Diets on the Growth Performance, Gastric Evacuation Rate and Carcass Composition of Tilapia rendalli

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Fish are important source of food for humans and animals in Kenya. The Lake Victoria is a major source of fish where decline in fish catches has been reported leading to concerns by the stakeholders over the future availability and quality of the fishing the lake. Among the factors thought to may have played a role in this decline are various types of pollutants going into the lake. However, this role and any associated fish lesions have not been investigated and were the main objectives of this study. The study assessed the communitys knowledge on pollution and the gross and histopathological lesions in Oreochromis niloticus and Lates niloticus landed fish. The prevalence of endoparasites in fish and their pathological effects were also investigated in Dunga in Kisumu, Homa Bay and Sindo. Questionnaires and focus group discussions (FGD) were used to assess the lake pollution and fish production at Homa Bay and Sindo site while live fish samples were also taken from the two sites. Standard ...

Inter-specific hybrids have been produced to increase growth rate, improve productivity through hybrid vigor, transfer desirable traits, reduce unwanted reproduction through production of sterile fish, combine other valuable traits such as good flesh quality, disease resistance and increase environmental tolerances, better food conversion, take advantages of sexual dimorphism and increase harvesting rate in culture systems. Hybrids play a significant role for increase in aquaculture production of several species of freshwater and marine fishes; for example, hybrid catfish in Thailand, hybrid stripped bass in the USA, hybrid tilapia in Israel and hybrid characids in Venezuela. Despite its wide-spread use in aquaculture, there have been an impression that hybrids do not hold much attraction for aquaculturist. With the expansion of aquaculture sector and the increased number of species being bred and farmed, there are hybrids that now account for a substantial proportion of national aquaculture ...

This work carried out to analyze the microbiology and physicochemical parameters of water in some Nile Tilapia fish farms in Kafrelsheikh Governorate. Total bacterial and total Coliforms count were analyzed, as well as the presence of E.faecalis, E.coli, and E.coli O157 in both fish and farms water. The level of total bacterial count in water varied between 4.3x104 and 1.3x106 CFU/ml. The (MPN) of total Coliforms ranged between ,3 and ,1100/ml between different sampling sites. E.faecalis was verified in 28% and 38% of fish and water samples respectively E.coli was isolated in 18% and 34% from fish water samples. E.coli O157 verified in 2% of fish samples and does not present in water samples. Sero-grouping of E.coli isolates revealed that E.coli belongs to five serogroups (O6, O27, O125, O126, and O157). Results of microbiology were confirmed by results of physicochemical parameters of the water samples where values of PH, conductivity, salinity, dissolved oxygen, ammonia, nitrate, nitrite, ...

See Poynton and Broadley, 1987, Ann. Natal Mus., 28: 169-171, and Lambiris, 1988, Lammergeyer, 39: 122-123, as well as the original publication, for discussion and misallocations of this species to other names. Schiøtz, 1999, Treefrogs Afr.: 304-305, Channing, 2001, Amph. Cent. S. Afr. 203-204, Theron and Minter, 2004, in Minter et al. (eds.), Atlas Frogs S. Afr. Lesotho and Swaziland: 159-160, Pickersgill, 2007, Frog Search: 501-504, and Du Preez and Carruthers, 2009, Compl. Guide Frogs S. Afr.: 96-97, provided accounts. Mercurio, 2011, Amph. Malawi: 99-101, provided an account for Malawi. Channing, Rödel, and Channing, 2012, Tadpoles of Africa: 114-115, reported on comparative tadpole morphology.. ...

Interpretive Summary: Streptococcus spp., including Streptococcus agalactiae (Lancefield group B streptococci) are considered emerging Gram positive bacterial pathogens responsible for approximately $1 billion USD in annual losses to the $7 billion global tilapia (Oreochromis sp.) aquaculture industry. There is an urgent need to identify different capsular types of S. agalactiae from farmed and wild fish in order to combat Streptococcus disease. This study evaluated a published multiplex polymerase chain reaction (PCR) capsular typing assay and commercially available antiserum to assign capsular type to a total of 40 S. agalactiae isolates including American Type Culture Collection (ATCC) isolates as controls. The capsule is a sugar containing material on the surface of these bacteria that is important for virulence and antigenicity including serotype. The evaluated multiplex PCR was modified from the original description to include primers specific for capsular types Ia, Ib, II and III. These ...

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Feb 15, 2012. CTSA published two manuals under the recently-completed project Anaylze and Compile the Nutritional Composition of Potential Feed Ingredient Resources in American Samoa into a Feed Manual for Use in Tilapia Feeds. The manual for adults contains feed ingredient anaylses, a tilapia feed recipe based on local ingredients, and detailed yet simple manufacturing instructions. Click here to view the Adult feed manufacturing manual. The manual for children simplifies the information further and provides farming families with easy-to-follow instructions to make tilapia feed in their own home using a soup can to measure ingredients! Click here to view the Childrens manual.. ...

In response to this problem, researchers at the Federal University of Ceará began to study tilapia skin to determine its possible application in burn victims.. Clinical trial leader Dr. Edmar Maciel, a plastic surgeon and burn specialist, explained to STAT that researchers were surprised by what they found.. We got a great surprise when we saw that the amount of collagen proteins, types 1 and 3, which are very important for scarring, exist in large quantities in tilapia skin, even more than in human skin and other skins, Maciel said. Another factor we discovered is that the amount of tension, of resistance in tilapia skin is much greater than in human skin. Also the amount of moisture.. To prepare the skin for medial applications, researchers used sterilizing agents and radiation to remove bacteria, muscle tissue, scales, toxins, viruses, and other dangers from the skin, then packaged and refrigerated the 10cm by 20cm skins, which can last for up to two years. And because Brazil farms ...

Turkish Journal of Fisheries and Aquatic Sciences 12: 851-859 (2012) www.trjfas.org ISSN 1303-2712 DOI: 10.4194/1303-2712-v12_4_13 Effects of Dietary Propolis and Pollen on Growth Performance, Fecundity and Some Hematological Parameters of Oreochromis niloticus Amany A. Abbass1,*, Amel M. El-Asely1, Mohamed M.M. Kandiel1 1 Benha University, Faculty of Veterinary Medicine, Deptartment of Fish Diseases and Management, Banha, Al Qalyubiyah, Egypt. * Corresponding Author: Tel.: +2013 2461 411; Fax: +2013 2461 411; E-mail: [email protected] Received 16 July 2012 Accepted 18 October 2012 Abstract This study aimed at identifying the effects of propolis and honeybee pollen (HBP) on growth performance, fecundity and some hematological indices of liver and kidney functions of Nile tilapia Oreochromis niloticus supplemented with 2.5% of propolis or HBP in diet for 21 days. The results showed that dietary propolis or HBP significantly (P,0.05) improved Specific Growth Rate (SGR), Average Daily Gain ...

Penelitian saat ini mengarah untuk menghasilkan suatu immun yang tinggi, secara genetic dimodifikasi pada redbelly tilapia, Tilapia Zillii dengan pertumbuhan dipercepat sebagai hasil injeksi (suntikan) langsung dari DNA ikan hiu (Squalus acanthias L.) ke dalam daging otot benih ikan (fingerlings) pada konsentrasi 10, 20, 40 dan 80 µg/fish. Hasil menunjukkan bahwa ikan yang disuntik dengan 40 µg/fish mempunyai pengaruh keunggulan signifikan (P≤0.05) dari pencapaian pertumbuhan. Juga, komposisi tubuh dari ikan ini telah ditingkatkan. Ikan yang disuntik dengan 20 dan 40 µg/fish pengaruh yang signifikan (P≤0.05) rata-rata lebih tinggi dari total aktivitas antibodi (total IgM), total serum protein dan globulin bandingkan dengan kelompok yang disuntik lainnya. Pengujian cytological untuk semua ikan yang disuntik dan kontrol mengungkapkan jumlah diploid yang sama (2n=44) dari khromosom, dan tidak ada kerusakan khromosomal yang dideteksi. Lebih dari itu, fingerprinting (sidik) DNA menunjukkan ...