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Khotimah, Fitriyah Husnul, Alimuddin Alimuddin, Dinar Tri Soelistyowati, Sri Nuryati, Ketut Sugama, Ahmad Muzaki, Indah Mastuti i in. "EVALUATION OF RESISTANCE AND GENE EXPRESSION OF BARRAMUNDI, Lates calcarifer POST-INFECTION OF NERVOUS NECROSIS VIRUS". Indonesian Aquaculture Journal 17, nr 2 (30.12.2022): 97. http://dx.doi.org/10.15578/iaj.17.2.2022.97-106.
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The most common problem in barramundi Lates calcarifer seedling production is the high mortality (> 90%) caused by nervous necrosis virus (NNV) infection. This research aims to evaluate the resistance and gene expression of barramundi challenged by NNV. Two populations were used in this study, i.e., Australian, and Situbondo-originated barramundi populations. The immune-related gene expression levels in the liver, head of kidney, and spleen were observed at 48 and 96 hours after post-infection (hpi). Barramundi’s survival and blood parameters were evaluated post-NNV infection. The results showed that the highest survival was revealed in Situbondo’s barramundi (42.0±4.47%) compared to Australian barramundi (20.0±7.07%) and no mortality was observed in the control without NNV infection. The higher survival rate in barramundi from Situbondo was in line with the blood profile. The number of red blood cell from Situbondo barramundi post-NNV infection (ST) at 96 hpi was higher (P<0.05) than Australian barramundi post-NNV infection (AT). The number of white blood cell of ST at 48 hpi was higher (P<0.05) than AT, but started to decrease at 96 hpi in ST barramundi. The total white blood cell in AT barramundi increased from 48 to 192 hpi. TNFα and IL1-β gene expression levels were significantly higher in the liver, head kidney, and spleen of Situbondo compared to Australian barramundi at 48 hpi, while MHCIIα gene expression in Situbondo’s was significantly higher compared to Australian barramundi at 96 hpi. These results indicate the important roles of all the genes in the barramundi’s immune responses against viral infection. Based on the results of the research, Situbondo’s barramundi has the potential to be used as a candidate for generating broodstock of disease-resistant strain.
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Yowe, David L., i Ronald J. Epping. "A minisatellite polymorphism in intron III of the barramundi (Lates calcarifer) growth hormone gene". Genome 39, nr 5 (1.10.1996): 934–40. http://dx.doi.org/10.1139/g96-117.
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This paper describes the detection of a polymorphism within the growth hormone (GH) gene of the fish barramundi (Lates calcarifer). PCR amplification of barramundi genomic DNA generated three different sized products: A, 409 bp; B, 478 bp; and H, 520 bp. Each barramundi isolate displayed one of four different types of profiles, which contained specific combinations of these PCR products. Sequence analysis confirmed that products A and B are different forms of the barramundi GH gene, and studies showed that product H was an artifact due to heteroduplex formation between the two smaller-sized molecules. The polymorphic nature of these PCR products was due to differences in the number of repeat monomers within the 5′ end of the barramundi decaminisatellite, an AT-rich repetitive sequence that was identified within intron III of this gene. The barramundi decaminisatellite consisted of 24 or 28 10-nucleotide imperfect direct repeat monomers in a tandem array. The monomers were grouped into one of three different families and evidence for monomer homogenization by crossover fixation was presented. The barramundi decaminisatellite differed from previously reported AT- or GC-rich minisatellites, although a similar decaminisatellite has been identified in intron III of the tilapia GH gene. Key words : mutation, PCR, somatotropin, teleost fish, variable number tandem repeat, VNTR.
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Russell, DJ, i RN Garrett. "Early life history of barramundi, Lates calcarifer (Bloch), in north-eastern Queensland". Marine and Freshwater Research 36, nr 2 (1985): 191. http://dx.doi.org/10.1071/mf9850191.
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Larval barramundi in the size range 2.8-5.2 mm were collected from plankton in two estuaries in north-eastern Queensland from 31 October 1979 until 13 February 1980. After leaving the plankton, barramundi moved into nearby brackish and freshwater swamps. These areas acted as nursery grounds, offering both protection from predators, and abundant prey in the form of insect larvae, other fish and crustaceans. These habitats exhibit a wide range of salinities (fresh water-44 × 103 mg l-1) and surface water temperatures (23-36�C). Juvenile barramundi commenced migration from these swamps into permanent tidal creeks around April where they remained for up to 9 months before dispersal into the estuary, up rivers or along coastal foreshores. The diet of the barramundi in these tidal creeks was exclusively fish and crustaceans. Juvenile barramundi were resident in tidal creeks that had been subjected to substantial human interference through habitat alteration. Destruction of nursery swamps may pose a serious threat to local barramundi stocks near centres of human population on the eastern Queensland coast.
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Meijer, Adam, Paul J. M. Roholl, Jacobus M. Ossewaarde, Brian Jones i Barbara F. Nowak. "Molecular Evidence for Association of Chlamydiales Bacteria with Epitheliocystis in Leafy Seadragon (Phycodurus eques), Silver Perch (Bidyanus bidyanus), and Barramundi (Lates calcarifer)". Applied and Environmental Microbiology 72, nr 1 (styczeń 2006): 284–90. http://dx.doi.org/10.1128/aem.72.1.284-290.2006.
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ABSTRACT Epitheliocystis in leafy seadragon (Phycodurus eques), silver perch (Bidyanus bidyanus), and barramundi (Lates calcarifer), previously associated with chlamydial bacterial infection using ultrastructural analysis, was further investigated by using molecular and immunocytochemical methods. Morphologically, all three species showed epitheliocystis cysts in the gills, and barramundi also showed lymphocystis cysts in the skin. From gill cysts of all three species and from skin cysts of barramundi 16S rRNA gene fragments were amplified by PCR and sequenced, which clustered by phylogenetic analysis together with other chlamydia-like organisms in the order Chlamydiales in a lineage separate from the family Chlamydiaceae. By using in situ RNA hybridization, 16S rRNA Chlamydiales-specific sequences were detected in gill cysts of silver perch and in gill and skin cysts of barramundi. By applying immunocytochemistry, chlamydial antigens (lipopolysaccharide and/or membrane protein) were detected in gill cysts of leafy seadragon and in gill and skin cysts of barramundi, but not in gill cysts of silver perch. In conclusion, this is the first time epitheliocystis agents of leafy seadragon, silver perch and barramundi have been undoubtedly identified as belonging to bacteria of the order Chlamydiales by molecular methods. In addition, the results suggested that lymphocystis cysts, known to be caused by iridovirus infection, could be coinfected with the epitheliocystis agent.
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G. Doupé, Robert, David L. Morgan i Howard S. Gill. "Prospects for a restorative fishery enhancement of Lake Kununurra: a high-level tropical impoundment on the Ord River, Western Australia". Pacific Conservation Biology 11, nr 2 (2005): 136. http://dx.doi.org/10.1071/pc050136.
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The high-level irrigation water supply dams of the Ord River in tropical Western Australia impede the movement of Barramundi Lates cafcarifer and other tropical fish species. A recreational Barramundi fishery enhancement of Lake Kununurra using a fishway has been widely promoted as advancing fishery conservation and the reformation of land and water management practices within the greater Ord River region. Of the fishways considered here, none have been found to admit Barramundi in the numbers and size classes necessary to establish or maintain the recreational fishery. Reasons for this include an inadequate understanding of fish behaviour and/or fishway deSign faults. The seemingly reluctant use of fishways by Barramundi might also be confounded by some observations being made on rivers where Barramundi populations are either comparatively small or non-existent. The alternative to a fishway is hatchery stocking. This option, like a dedicated Barramundi fishway, represents a single-species approach to fishery enhancement and is the least legitimate attempt to restore the ecological integrity of the fish communities of either Lake Kununurra or the Ord River. We argue that progress toward the restoration of the lake should continue, though a fishery enhancement programme that incorporates the broader fish community and not just a single species, would better rebuild the presently degraded Ord River system. Of the available options, we recommend testing an experimental model that incorporates aspects of the vertical-slot and bypass fishway designs, with the objectives being to learn migratory fish behaviour, abundance, and patterns and cues for fish movement. This approach can incorporate Barramundi as the target species to better understand entrance design constraints, minimum slot widths for larger fish, and operation under low flows during peak irrigation water demands, but still accommodate the movement of tropical fishes during these periods.
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Amir, Fachrurozi, Firman M. Nur, Nur Fadli i Zainal Abidin Muchlisin. "Critical thermal limit and behavior of the Barramundi (Lates calcarifer Bloch, 1790) fingerling exposure with different temperature". Depik 10, nr 1 (26.04.2021): 47–52. http://dx.doi.org/10.13170/depik.10.1.20287.
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Barramundi (Lates calcarifer) is one of the commercial fish in Indonesia. The phenomenon of climate change due to global warming has affected the life of aquatic biota, including fish. The objectives of the present study were to determine a critical thermal maximum (CTMax) and the behavior of Barramundi (L. calcarifer) due to the increase in water temperature. The research was conducted at the Fishing Technology Laboratory, Faculty of Marine and Fisheries, Universitas Syiah Kuala in February 2021. The experiment was conducted in 10 aquariums equipped with heaters. The initial temperature of the treatment was 28oC and increased gradually every one minute by 0.2oC. The results showed that the abnormal behavior of Barramundi fingerling was started to appear at 37oC where the fish began to swim fast, then swim sideways at 38oC-39oC, hit the container wall at 39oC-40oC, jumped and weakened then dead at 40oC and 41oC. The average critical temperature of Barramundi fingerling was recorded at a temperature of 41oC within 65 minutes. Therefore, it is concluded that the Barramundi (L. calcarifer) display an abnormal behavior above the temperature of 35oC, however, they can survive up to 42oC exposure for 70 minutes.Keywords:Critical thermal maximumTemperature riseGlobal warming
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Balston, Jacqueline. "Short-term climate variability and the commercial barramundi (Lates calcarifer) fishery of north-east Queensland, Australia". Marine and Freshwater Research 60, nr 9 (2009): 912. http://dx.doi.org/10.1071/mf08283.
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The sustainable productivity of estuarine fisheries worldwide is threatened by over-fishing, habitat destruction and water impoundment. In some cases, the natural variability of freshwater inputs has been shown to affect catch when low flows reduce nutrient input and inundated nursery habitats. Historically, the annual commercial catch of barramundi (Lates calcarifer) in Queensland has been highly variable for reasons not fully understood. In conjunction with a life-cycle model, statistical analyses of climate variables and barramundi catch data from the Princess Charlotte Bay area identified several significant relationships. Warm sea surface temperatures, high rainfall, increased freshwater flow and low evaporation (all measures of an extensive and productive nursery habitat) were significantly correlated with barramundi catch 2 years later and suggest that young barramundi survival is enhanced under these conditions. Catchability was significantly increased with high freshwater flow and rainfall events in the year of catch. A forward stepwise ridge regression model that included a measure of rainfall and evaporation 2 years before catch explained 62% of the variance in catch adjusted for effort. It is recommended that the impact of climate variability be considered in the management of wild barramundi stocks and possibly other species not yet examined.
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Russell, DJ, i RN Garrett. "Movements of juvenile barramundi, Lates calcarifer (Bloch), in north-eastern Queensland". Marine and Freshwater Research 39, nr 1 (1988): 117. http://dx.doi.org/10.1071/mf9880117.
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Movements of juvenile barramundi resident in tidal creeks of two north-eastern Queensland coastal bays were determined using tag and recapture techniques. In a 3-year period from 1978, 1268 mainly young- of-the-year barramundi were tagged and 213 (17%) recaptured. Most fish were recaptured at the original tagging location, with only 32 (2.5% of all fish tagged) caught away from the tidal creeks where they were released. Marked fish continued to be recaptured within the tidal creeks until they were about 1 year old. Barramundi of this age moved out into the main estuary and dispersed into adjacent streams and coastal habitats. After leaving the tidal creeks, barramundi tagged in Trinity Bay moved an average distance of 7.6 km, whereas those tagged in Rockingham Bay moved an average of 23 km. Factors which may limit the movements of these juvenile fish are discussed.
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Milton, David, Markson Yarrao, Gary Fry i Charles Tenakanai. "Response of barramundi, Lates calcarifer, populations in the Fly River, Papua New Guinea to mining, fishing and climate-related perturbation". Marine and Freshwater Research 56, nr 7 (2005): 969. http://dx.doi.org/10.1071/mf04278.
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Migrating barramundi (Perciformes : Centropomidae) spawners support a valuable artisanal fishery on the coast of south-western Papua New Guinea. This fishery declined dramatically during the 1990s shortly after the large Ok Tedi copper mine began in the headwaters of the large Fly River nearby. In order to understand the factors causing the decline, populations were sampled quarterly with gill-nets at over 20 sites throughout the Fly River from 1987 to 2001. Barramundi were most abundant in the middle and upper reaches of the Fly River. No evidence was found that output from the large Ok Tedi mine was negatively impacting on barramundi catch rates. However, the commercial fishery in the middle Fly River was found to have a negative impact on the weight of barramundi in monitoring catches in that region. Additionally, catch rates of juvenile barramundi (1 year olds) in the Fly River were negatively correlated with the amount of rainfall on the breeding grounds during the previous monsoon. This suggests that the reduced catch rates in the coastal commercial fishery in the late 1980s and early 1990s may have been affected by both the riverine commercial fishery and the El Niño (ENSO) that occurred at that time.
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Doupé, Rob, i Harry Recher. "Gene pool management of hatchery Barramundi Lates calcarifer for production and stock augmentation programmes". Pacific Conservation Biology 5, nr 1 (1999): 73. http://dx.doi.org/10.1071/pc990073.
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The depletion of Australia's wild Barramundi Lates calcarifer fishery pre-empts two future roles for Barramundi aquaculture in Australia: first, the industry is primarily intended to supply meat upon a sustained basis; and second, it will probably serve as the predominant source of genetic material for the augmentation of those wild populations that have been depleted, and in that sense the process becomes somewhat circular and interdependent. This paper considers this relationship in the context of captive gene pool management and suggests an alternative method of conserving Barramundi genetic resources to be used to provide genetically "compatible" stocks for the two activities in conjunction with genetic improvement for commercial operations.
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Yani, Ahmad, Muh Yusri Karim, Zainuddin i Siti Aslamyah. "The effect of vitamin B complex and phosphorus on the RNA/DNA ratio and larval growth of barramundi (Lates calcarifer Bloch, 1790)". IOP Conference Series: Earth and Environmental Science 1119, nr 1 (1.12.2022): 012069. http://dx.doi.org/10.1088/1755-1315/1119/1/012069.
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Abstract Barramundi (L. calcarifer) is a valuable fish with aquaculture potential. One of the factors determining the success of barramundi aquaculture is the availability of seeds, however larviculture success is often low. This research examined the effect of supplementation with various combinations of vitamin B complex and phosphorus on the RNA/DNA ratio and growth of captive-bred barramundi larvae. Barramundi larvae aged 2 days were stocked at a density of 25 fish/L and reared for 30 days with natural feed (Chlorella and rotifers) in 40 L containers filled with 30 L water. Commercial vitamin B complex and mineral phosphorus were dissolved in water and added to the larval rearing media. The research used a completely randomized factorial design with 2 factors, 4 levels and 3 replicates, giving 16 treatments and 48 experimental units. The factors were vitamin B complex (0, 75, 150, and 225 mg/L) and phosphorus (0, 0.5, 1.0, and 1.5 mg/L). Analysis of variance showed that the combination of vitamin B complex and phosphorus had a highly significant effect (p<0.01) on the RNA/DNA ratio. Barramundi larval growth was lowest with 0 mg/L of both supplements (control) and highest with 150mg/L vitamin B complex and 1.0 mg/L phosphorus, decreasing with higher levels of either additive.
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Susanto, Agus, Mieke Hemiawati Satari, Basril Abbas, R. Setyo Adji Koesoemowidodo i Arief Cahyanto. "Fabrication and Characterization of Chitosan-Collagen Membrane from Barramundi (Lates Calcarifer) Scales for Guided Tissue Regeneration". European Journal of Dentistry 13, nr 03 (lipiec 2019): 370–75. http://dx.doi.org/10.1055/s-0039-1698610.
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Abstract Objectives The aim of this study was to evaluate the synthesis, mechanical strength, and morphology of chitosan–collagen membranes from barramundi scales for guided tissue regeneration technique. Materials and Methods Collagen was extracted from barramundi scales by immersion in acetic acid. The resulting wet collagen was later dried. The membrane was fabricated by mixing chitosan with collagen from barramundi scales. Membrane characterization parameters were measured using Fourier transform infrared (FTIR), scanning electron microscopy (SEM) and mechanical property. Results The FTIR spectrum showed the typical peak of the mixture of chitosan and collagen. The tensile strength and elongation at break of the membrane in dry condition were 0.28 MPa and 8.53%, respectively, while in the wet condition these were 0.12 MPa and 25.6%. The membrane porosity test result was 38.85%; SEM result showed a porous membrane surface with size varying around 16 to 100 µm. Conclusion The chitosan-collagen membrane from the barramundi scale showed the fibrous membrane surface that has ideal porous size as guided tissue regeneration membrane and the lower mechanical strength.
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Flint, Nicole, Michael R. Crossland i Richard G. Pearson. "Sublethal effects of fluctuating hypoxia on juvenile tropical Australian freshwater fish". Marine and Freshwater Research 66, nr 4 (2015): 293. http://dx.doi.org/10.1071/mf14120.
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Hypoxia in freshwater ecosystems of the Australian wet tropics occurs naturally, but is increasing as a result of anthropogenic influences. Diel cycling of dissolved oxygen (DO) concentration (fluctuating hypoxia) is common in the region. Laboratory experiments sought to identify relationships between severity of fluctuating hypoxia and sublethal effects on ventilation, feeding and growth for juvenile barramundi (Lates calcarifer), eastern rainbowfish (Melanotaenia splendida splendida) and sooty grunter (Hephaestus fuliginosus). Fish continued to feed and grow under daily exposure to severe fluctuating hypoxia treatments for several weeks. Ventilation rates increased in a significant direct quadratic relationship with the severity of hypoxia treatments and increasing hypoxia caused ventilatory behaviour changes in all species. Barramundi and rainbowfish attempted aquatic surface respiration and were more tolerant of severe hypoxia than was sooty grunter; barramundi and rainbowfish are also more likely to experience hypoxia in the wild. There was a significant quadratic relationship between growth and minimum DO saturation for barramundi. Although all three species were tolerant of hypoxia, anthropogenic stressors on tropical Australian aquatic ecosystems may increase the frequency and severity of hypoxic conditions causing a concomitant increase in fish kill events.
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Kasumyan, Alexander, Olga Isaeva i Le T. K. Oanh. "Taste Preferences and Orosensory Feed Testing Behavior in Barramundi Lates calcarifer (Latidae, Perciformes)". Journal of Marine Science and Engineering 10, nr 9 (31.08.2022): 1213. http://dx.doi.org/10.3390/jmse10091213.
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In the cultivation of barramundi Lates calcarifer, one of the key factors is developing new commercial feeds that are nutritionally adequate and attractive to fish. The sensory quality of feeds can be improved by taste stimulants. The aim of the present study is to examine the taste attractiveness of 21 free L-amino acids and 4 basic taste substances (0.1–0.001 M). The feeding behavior that accompanied the orosensory testing of feed is also studied. Agar pellets flavored with each taste substance were individually offered to barramundi juveniles (5–9 cm, 4–10 g). Citric acid, cysteine, and alanine were palatable; sucrose and 7 amino acids had an aversive taste; sodium chloride, calcium chloride, and 12 amino acids did not influence the consumption of pellets. Taste preferences for amino acids are positively correlated in 6 out of 21 fish species, which confirms high species specificity of taste preferences in fishes. Barramundi often make repeated grasps and rejections of pellets regardless of their palatability, which led to the destruction of pellets in up to 50% of trials. When swallowing, fish retain pellets several times longer, and pellet fragmentation occurs more often, than in the case of final refusal of pellets. The data presented here can be used to improve the cultivation of barramundi.
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Salini, J., i JB Shaklee. "Genetic structure of barramundi (Lates calcarifer) stocks from northern Australia". Marine and Freshwater Research 39, nr 3 (1988): 317. http://dx.doi.org/10.1071/mf9880317.
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Barramundi, L. calcarifer, were collected from seven localities in the Northern Territory, the Daly, Finniss, Mary, Glyde, Roper and McArthur rivers and Blue Mud Bay, and from the Ord River in Western Australia. Barramundi were sampled seven times from the Daly and Finniss rivers over a 14-month period. In total, 46 loci were identified using starch-gel electrophoresis of enzymes and polyacrylamide electrophoresis of muscle proteins. Twelve loci were polymorphic at the P0.99 level. Most loci were in Hardy-Weinberg equilibrium. A contingency Χ2 analysis for homogeneity of alleles over all loci and all localities was highly significant (P < 0.001). Comparisons of data from adjacent pairs of localities revealed that the overall heterogeneity was attributable to heterogeneity among seven of the eight localities; the Daly and Finniss river areas were not significantly different from one another. No evidence of heterogeneity over time was found among the collections from the Daly River area. The considerable amount of heterogeneity observed suggests that each of these seven localities supports a genetically discrete stock of barramundi; this conclusion is consistent with the documented life history of Australian barramundi. The genetic heterogeneity of the stocks should be considered when management policies for L. calcarifer are being formulated.
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Crook, D. A., D. J. Buckle, Q. Allsop, W. Baldwin, T. M. Saunders, P. M. Kyne, J. D. Woodhead, Roland Maas, Brien Roberts i M. M. Douglas. "Use of otolith chemistry and acoustic telemetry to elucidate migratory contingents in barramundi Lates calcarifer". Marine and Freshwater Research 68, nr 8 (2017): 1554. http://dx.doi.org/10.1071/mf16177.
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Migration is a fundamental aspect of the life history of many fish and must be well understood for targeted conservation and management. We used acoustic telemetry and otolith 87Sr/86Sr analysis, in conjunction with annual ageing, to study intraspecific variation in barramundi Lates calcarifer migration in the Northern Territory, Australia. Acoustic transmitters were implanted into 25 barramundi (420–1010-mm total length (TL); median 510mm TL) from freshwater reaches of the South Alligator River and their movements tracked over >2 years. 87Sr/86Sr transect analysis was also conducted on otoliths of 67 barramundi from the Daly, Mary, South Alligator and Roper rivers. Acoustic telemetry showed that most fish remained in fresh water across wet and dry seasons. Higher rates of movement occurred during the wet season and a minority of fish moved into the estuary during high flows. Otolith chemistry analyses revealed high diversity in salinity histories among individuals. We integrated the telemetry and otolith chemistry data to examine migration as a function of the stage of sexual development, and have proposed a revised life history model that identifies three migratory contingents. We conclude that anthropogenic disturbance, including modified river hydrology, has the potential to alter the frequency of life history contingents in barramundi populations.
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Kerddee, P., HT Dong, P. Chokmangmeepisarn, C. Rodkhum, P. Srisapoome, N. Areechon, J. Del-Pozo i P. Kayansamruaj. "Simultaneous detection of scale drop disease virus and Flavobacterium columnare from diseased freshwater-reared barramundi Lates calcarifer". Diseases of Aquatic Organisms 140 (6.08.2020): 119–28. http://dx.doi.org/10.3354/dao03500.
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Freshwater farming of barramundi Lates calcarifer in Thailand is a growing sector in aquaculture, but mortalities due to infectious diseases are still a major threat to this industry. In 2018, an episode of severe mortality in juvenile barramundi was noted in a freshwater earth pond site. Fish presented with severe gill necrosis, as well as severe cutaneous hemorrhages, scale loss, and discoloration at the base of dorsal fin (saddleback lesions). Histopathology revealed extensive necrosis of skeletal muscle and gill filaments, as well as basophilic inclusion bodies and megalocytosis in muscle, gill, liver, and kidney. Scale drop disease virus (SDDV) infection was subsequently confirmed by virus-specific semi-nested PCR. Further, DNA sequences of the viral major capsid protein (MCP) and ATPase genes had a respective homology of 99.85 and 99.92% with sequences of SDDV infecting barramundi in saltwater culture. Gill necrosis and saddleback lesions are not typical lesions associated with scale drop syndrome. Their presence was explained by Flavobacterium columnare isolation from the gill, followed by positive F. columnare-specific PCR. To our knowledge, this is the first report of SDDV-associated mortality in freshwater-farmed barramundi. Furthermore, this mortality presented as a concurrent infection with SDDV and F. columnare, with typical lesions of both infections.
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Zhu, Z. Y., C. M. Wang, L. C. Lo, F. Feng, G. Lin i G. H. Yue. "Isolation, characterization, and linkage analyses of 74 novel microsatellites in Barramundi (Lates calcarifer)". Genome 49, nr 8 (1.08.2006): 969–76. http://dx.doi.org/10.1139/g06-080.
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Barramundi (Lates calcarifer) is an important marine food fish species in Southeast Asia and Australia. Seventy-four novel microsatellites were isolated from a genomic DNA library enriched for CA repeats and were characterized in 24 unrelated individuals. Among the 74 microsatellites, 71 were polymorphic, with an average allele number of 7.0 ± 3.6/locus. The average expected heterozygosity of these polymorphic markers was 0.66. Sixty-three of the 71 polymorphic microsatellites conformed to Hardy–Weinberg equilibrium. Linkage analyses were conducted in a reference family, leading to the assignment of 34 novel microsatellites and 16 published markers in 16 linkage groups. The novel microsatellites developed in this study will contribute significantly to the construction of a first-generation linkage map for mapping of quantitative trait loci in Barramundi, and supply a large choice of markers for studies on population genetics, stock management, and pedigree reconstruction.Key words: Barramundi, microsatellites, polymorphism, linkage mapping.
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Wright, C., B. B. Wedding, S. Grauf i O. J. Whybird. "Age estimation of barramundi (Lates calcarifer) over multiple seasons from the southern Gulf of Carpentaria using FT-NIR spectroscopy". Marine and Freshwater Research 72, nr 9 (2021): 1268. http://dx.doi.org/10.1071/mf20300.
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The age of whole otoliths from barramundi (Lates calcarifer) obtained from the southern Gulf of Carpentaria were estimated using Fourier transform near-infrared (FT-NIR) spectroscopy. Otoliths from 1716 barramundi collected in 2006, 2009 and 2012–2015 were used in this study. Partial least-squares regression models (PLS-R) and multiple linear regression models (MLR) were developed from the diffuse reflectance spectra and the age was obtained from traditional sectioned otoliths. Calibration models were built up over consecutive years (2012–2015) by using a subset of the samples and used to predict the age of the remaining samples and samples from the following year. Results suggest that when seasonal (temporal) variability is incorporated into the calibration model, FT-NIR has the ability to predict barramundi age (validation R2 ranged from 0.73 to 0.78; RMSEP ranged from 6.92 to 7.64 months). The predicted age class was within 1 year of the reference age in over 96% of the samples. These models were also able to predict the age of otoliths from 2006 and 2009, which were retrieved from long-term storage (validation R2 ranged from 0.77 to 0.84; RMSEP ranged from 8.66 to 10.88 months). The results from this study have shown the potential for barramundi from the southern Gulf of Carpentaria to be aged quickly and accurately by using FT-NIR.
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Tahity, Tanha, Md Rakeb Ul Islam, Nurer Zaman Bhuiyan, Tasrina Rabia Choudhury, Jimmy Yu, Md Abu Noman, Mohammad Mozammal Hosen i in. "Heavy Metals Accumulation in Tissues of Wild and Farmed Barramundi from the Northern Bay of Bengal Coast, and Its Estimated Human Health Risks". Toxics 10, nr 8 (22.07.2022): 410. http://dx.doi.org/10.3390/toxics10080410.
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Globally, both natural water bodies and aquaculture systems are being severely contaminated by heavy metals due to rising anthropogenic activities. Fish living in aquatic environments can easily accumulate metals in their bodies, which can then be transferred to consumers and put them at risk. In this study, metal concentrations (Pb, Cd, Cr, As, Mn, Cu, Zn) in different organs (gill, liver, and muscle) of farmed and wild Barramundi (Lates calcarifer) fish from the northern Bay of Bengal were evaluated to quantify and compare contamination levels and related human health risk. Heavy metal concentrations were higher in liver tissues of farmed Barramundi than in wild Barramundi, with the following relative mean values in the liver, gills, and muscle: Zn > Cu > Pb > Mn > Cd > Cr > As; Zn > Cr > Cu > Pb > Mn > Cd > As; Zn > Pb > Cu > Cr > Mn > Cd > As; Zn > Pb > Cu > Cr > Mn > Cd > As; and Zn > Pb > Cu > Cr > Mn > Cd > As, respectively. The differences in heavy metal accumulation observed between farmed and wild fish were probably related to the differences in their environmental conditions and dietary element concentrations. However, ANOVA indicated that the variation of metals in wild and Barramundi was not statically significant. Pb concentrations in the liver tissue of farmed Barramundi exceeded the national and international threshold limits, whereas concentrations of other metals were within the limit. Among the examined organs in both fish species (wild and farmed), muscle had the lowest concentration compared to others, and liver was the target organ for Pb, Cu, and Cd accumulations. Metals such as Zn and Mn exhibited higher concentration in the gills. However, all the studied heavy metals were below the maximum permissible limits of national and international standards, but the mean concentrations of Pb and Cd values in the liver of farmed Barramundi exceeded all international and national guidelines. Based on the contamination factors (CF) and pollution indices (PLI and MPI), the degree of contamination in the fish organs was as follows: gills > liver > muscle. The major accumulation tissues for both farmed and wild fish were found to be the gills (MPI = 0.970) and the liver (MPI = 0.692). Based on the estimated daily intake (EDI), the fish samples examined in this study are safe for human consumption as within the recommended daily allowance (RDA) range established by various authorities. According to the Target Hazard Quotient (THQ) and Carcinogenic Risk (CR) calculations, though the Barramundi fishes depicted no potential hazard to humans, farmed fish posed a higher health risk than wild fish.
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PEARCE, M., JD HUMPHREY, AD HYATT i LM WILLIAMS. "Lymphocystis disease in captive barramundi". Australian Veterinary Journal 67, nr 4 (kwiecień 1990): 144–45. http://dx.doi.org/10.1111/j.1751-0813.1990.tb07734.x.
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Fehér, Milán, Edina Baranyai, Edina Simon, Péter Juhász, Éva Csorvasi, Péter Bársony i László Stündl. "The use of essential trace elements in the juvenile rearing of barramundi (Lates calcarifer". Acta Agraria Debreceniensis, nr 57 (20.03.2014): 33–38. http://dx.doi.org/10.34101/actaagrar/57/1956.
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Barramundi (Lates calcarifer L.) is a predatory fish species native in Southeast Asia and Australia. Based on the geothermal potentiality of Hungary the warm-water fish can be reared successfully. Zooplankton in the wild contains minerals in a higher concentration than the usually fed newly hatched Artemia nauplii, therefore essential trace elements, such as cobalt, zinc and manganese play an important role in the larviculture of barramundi. Cobalt is vital in trace amount for many living functions of vertebrates, however, lower number of papers are available considering the nutritional aspects. Nevertheless. improved growth performance was observed in cases of some fish species when diet was supplemented with CoCl2. Zinc and manganese are also vital for optimal growth and accordingly are investigated and applied diet supplements in aquaculture.
The main aim of the recent study is to investigate the effects of cobalt, manganese and zinc on the growth performance and homogeneity of fish when a commercially available dry diet is supplemented with trace elements individually and in combined treatments. A total of 6 treatments were set in a randomized blocked design where the concentrations of the applied elements were 50 mg kg-1 for CoCl2, for ZnSO4 and for MnCl2 individually, as well as for CoCl2 along with ZnSO4 and for CoCl2 along with MnCl2 in combination. Although the production parameters of larval barramundi were positively affected by the addition of trace elements when the retention of minerals occurred through nourishment living organisms, statistically no differences were found between the treatments considering the growth performance of barramundi juveniles either when dry feed was supplemented with cobalt, manganese or zinc (p>0.05). While the use of cobalt and manganese in combined treatments produced a less uniform larvae in size and as a consequence of increased heterogeneity, survival was significantly reduced by the cannibalism, the sizes distribution of barramundi juveniles wasn’t affected by the dry diet supplementation of these elements.
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Tanimoto, M., J. B. Robins, M. F. O'Neill, I. A. Halliday i A. B. Campbell. "Quantifying the effects of climate change and water abstraction on a population of barramundi (Lates calcarifer), a diadromous estuarine finfish". Marine and Freshwater Research 63, nr 8 (2012): 715. http://dx.doi.org/10.1071/mf11246.
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Many aquatic species are linked to environmental drivers such as temperature and salinity through processes such as spawning, recruitment and growth. Information is needed on how fished species may respond to altered environmental drivers under climate change so that adaptive management strategies can be developed. Barramundi (Lates calcarifer) is a highly prized species of the Indo-West Pacific, whose recruitment and growth is driven by river discharge. We developed a monthly age- and length-structured population model for barramundi. Monte Carlo Markov Chain simulations were used to explore the population’s response to altered river discharges under modelled total licenced water abstraction and projected climate change, derived and downscaled from Global Climate Model A1FI. Mean values of exploitable biomass, annual catch, maximum sustainable yield and spawning stock size were significantly reduced under scenarios where river discharge was reduced; despite including uncertainty. These results suggest that the upstream use of water resources and climate change have potential to significantly reduce downstream barramundi stock sizes and harvests and may undermine the inherent resilience of estuarine-dependent fisheries.
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Mallen-Cooper, M. "Swimming ability of juvenile Australian bass, Macquaria novemaculeata (Steindachner), and juvenile barramundi, LAtes calcarifer (Bloch), in an experimental vertical-slot fishway". Marine and Freshwater Research 43, nr 4 (1992): 823. http://dx.doi.org/10.1071/mf9920823.
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Australian bass, Macquaria novemaculeata, and barramundi, Lates calcarlfer, are catadromous fish that spawn in estuaries and the juveniles migrate upstream into fresh water. Lowland fishways in the range of these species therefore need to accommodate these juvenile fish. The swimming abilities of three size classes (fork length (LCF) + s.d.: 40 * 3 mm, 64 + 5 mm and 93 + 8 mm) of juvenile Australian bass and one size class (43 4 mm total length) of juvenile barramundi were tested in an experimental vertical-slot fishway. Water velocity was calculated from the head loss in water level between adjacent pools in the fishway, using a coefficient of discharge (Cd) of 1.0. Both species readily negotiated the fishway at low water velocities, indicating that the fish were in a migratory mode and that these fish could use the vertical-slot design of the fishway. The sigmoidal decrease in this ability with increasing water velocity was described by a probit regression. The NV95 value (maximum negotiable water velocity for 95% of the sample) is suggested as the suitable maximum-velocity criterion for vertical-slot fishways for these fishes. The NV95 values were 0.66 m s-1 for 43-mm barramundi, 1.02 m s-1 for 40-mm bass, 1.40 m s-1 for 64-mm bass and 1.84 m s-1 for 93-mm bass. The NV95 for barramundi is probably an underestimate of their swimming ability in the wild because the water temperature was low for this species. Up to 20% of the 93-mm bass died at test velocities greater than 2.0 m s-1, but there were no mortalities of other fish during or immediately following a trial. The results indicate that water velocity in fishways for juvenile bass and barramundi should not exceed 1.4 m s-1 in a cell size of 1.5 m length and 1.0 m width. The relative swimming speeds (body lengths per second) of bass in the fishway are higher than other estimates of burst swimming speeds of juvenile fish obtained from studies in flumes. This indicates that data from the latter type of study should not be used to determine water velocities for fishways.
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Fehér, Milán, Edina Baranyai, Péter Bársony, Edina Simon, József Posta i László Stündl. "The effect of cobalt-chloride on the production parameters and homogenity of barramundi (Lates calcarifer) larvae". Acta Agraria Debreceniensis, nr 51 (10.02.2013): 21–25. http://dx.doi.org/10.34101/actaagrar/51/2056.
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Barramundi (Lates calcarifer) is a predatory fish species native in Southeast Asia and Australia. Based on the geothermal potentiality of Hungary the high market potential warm-water fish barramundi can be produced economically. Living nourishment organisms such as Artemia nauplii play an essential role in the larval rearing of barrramundi. However, zooplanktons in natural aquatic enviroments contain minerals in a higher concentration than the usually fed newly hatched Artemia. Therefore the goal of recent study was to investigate the effect of cobaltchloride on the larval growth and survival of barramundi when fed individually and combined with Zn and Mn supplemented Artemia.
In our experiment a 24 hours period was used for the enrichment of newly hatched Artemia nauplii with cobalt chloride in itself, as well as in combination with zinc sulphate and manganese chloride. A total of 1900 barramundi larvae from 15–30 day post hatching were fed with supplemented Artemia in 9 groups of treatments in duplicate. The growth performance and elemental concentration of 40 larvae from each group was determined. All the groups produced significantly improved growth compared to the control (p<0.05). The lower concentration of individual Co supplementation resulted in a higher growth performance while the opposite dose relation occured when combined the Co with Mn. Cobalt had a significant negative effect on the Mn uptake of the larvae – significantly higher Mn accumulation compared to the control group was only observed when Mn was fed in itself (p<0.05). In case of Co-Zn-1 and Co-Zn-2 treatments significantly higher Zn concentration was measured than in the others (p<0.05).
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Yanti, Riska Z., Zainal A. Muchlisin, Abdullah A. Muhammadar i Nur Fadli. "Application of pumpkin flour to the diet of Barramundi Lates calcarifer fingerling". Depik 11, nr 2 (26.07.2022): 176–81. http://dx.doi.org/10.13170/depik.11.2.26859.
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Barramundi Lates calcarifer is a high economic value fish in Indonesia and Southeast Asia countries. However, the aquaculture system still experiences problems, including the high cost of production, specifically from feed, which is due to its relatively slow growth and low digestibility. Therefore, this study aims to determine alternative ingredients that can be used in the fish diet to improve feed utilization and growth performance using pumpkin flour Cucurbita moschata. A completely randomized design (CRD) with 6 treatments and 3 replications was adopted in this study. The tested diet was (A) diet without pumpkin flour (control), (B) with 5% (C) 10% (D) 15% (E) 20%, and (F) 25%. The size of the Barramundi samples was 3-4 cm on average and the body weight was 1-3 g at the stocking density of 15 fish/container. The fish fed as much as 10% body weight daily, which is divided into 2 times, namely 08.00 AM and 4.00 PM for 60 days. The results showed that the addition of pumpkin flour had a significant effect on weight gain, daily and specific growth rate, survival, feed efficiency, conversion ratio, and carcass protein (P0.05). The diet with 5% pumpkin flour gave the best results over other treatments, with an average weight gain of 0.761 g, feed conversion of 1.578, feed efficiency of 63.455%, and a daily and specific growth rate of 0.012 g and 0.738%, respectively, The highest carcass protein content was found in the control treatment with a value of 18.210%, which was not significantly different from the 5% pumpkin flour treatment. Therefore, it is concluded that pumpkin flour can be added to the Barramundi diet as much as 5%. Keywords: Barramundi, Snapper, pumpkin, feed utilization
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Crist, R. P., J. R. Conolly i L. D. Robinson. "BARRAMUNDI–1: A CASE HISTORY IN FRACTURE ANALYSIS AND SEAL INTEGRITY IN THE BASS BASIN". APPEA Journal 41, nr 1 (2001): 71. http://dx.doi.org/10.1071/aj00004.
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Barramundi–1 was drilled to test a faulted rollover structure with thick potential reservoir sands in the top Eocene Eastern View Coal Measures. A structure-wide AVO anomaly was mapped corresponding to these sands and this suggested the presence of a valid hydrocarbon trap.Barramundi–1 reached a total depth of 2,100 m on October 2 1999 after penetrating a thick reservoir sand sequence in the Eastern View Coal Measures within the T27/P permit operated by GLOBEX Far East.No significant hydrocarbons were encountered. Log analysis showed that large borehole breakouts occur below 1,400 m in thick Eastern View sands and background gas was observed to decrease. Dipole Sonic Imager (DSI) logs also showed that the amplitude of the fast shear wave event was attenuated from 1,250–1,450 m and was erratic in amplitude below this depth.The Compressional Velocity (Vp) to Shear Wave Velocity (Vs) ratios showed large variations over short intervals in the break out zones.It was concluded that Barramundi–1 failed to contain commercial hydrocarbons due to the seal failure caused by late Tertiary movement which has manifested itself both as fractures and faults, with a principal stress axis that trends northeast–southwest.An AVO anomaly mapped across the Barramundi structure has probably been caused by a combination of lithological and stress anisotropy in thick Eastern View sands at depths below 1,500 m, as observed by ovalisation occurring on the Caliban log analysis.It was concluded that the stresses would add to anisotropic effects in the rocks and consequently direct hydrocarbon detection methods such as AVO have to be used with caution.The central Bass Basin has generated both oil and gas. More wells need to be analysed using seal integrity methods in order to fully determine the reason for the failed trapping mechanism at Barramundi. This could eventually lead to a fault seal model that would allow exploration to successfully continue.
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Matthews, S. J., A. K. K. Kinhult, P. Hoeben, V. R. Sara i T. A. Anderson. "Nutritional regulation of insulin-like growth factor-I mRNA expression in barramundi, Lates calcarifer". Journal of Molecular Endocrinology 18, nr 3 (czerwiec 1997): 273–76. http://dx.doi.org/10.1677/jme.0.0180273.
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Abstract The effect of nutritional status on IGF-I mRNA expression in the liver and brain of juvenile barramundi (Lates calcarifer) was investigated. Fish were either fed a satiety ration (SAT) or starved (STV) for 6 weeks. Starved fish demonstrated significantly lower condition factor and hepatic IGF-I mRNA expression at 3 and 6 weeks, when compared with the SAT group. IGF-I mRNA expression in the brain was 10 fold lower than the liver and was not affected by ration size. These results suggest the liver is the major site of IGF-I mRNA synthesis and hepatic but not brain IGF-I mRNA expression is regulated by food availability in juvenile barramundi.
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McCulloch, Malcolm, Mike Cappo, James Aumend i Wolfgang Müller. "Tracing the life history of individual barramundi using laser ablation MC-ICP-MS Sr-isotopic and Sr/Ba ratios in otoliths". Marine and Freshwater Research 56, nr 5 (2005): 637. http://dx.doi.org/10.1071/mf04184.
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Otoliths preserve a continuous geochemical record of its life history, from the earliest natal stage through to adulthood. Using in situ laser ablation (UV) multi-collector inductively coupled plasma mass spectrometry (MC-ICP-MS) measurements of Sr isotopic compositions together with elemental abundances (Ca, Sr, Ba and Mg), we show how it is possible to characterise the various types of habitats encountered throughout the lifecycle history of individual barramundi. Unlike trace element concentrations, which can be modulated by physiological processes, Sr isotopic compositions of otoliths provide a direct fingerprint of the water mass in which the fish lived. Elemental abundances, in particular Sr/Ba ratios are, however, shown to be especially sensitive to transitional environments, such as estuaries. The flexibility of the barramundi’s life history is confirmed by the present study, with the existence of both marine and freshwater nurseries, with some individuals spending their entire life cycle in fresh water, some entirely in marine and others moving between freshwater estuarine and marine habitats.
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Staunton-Smith, Jonathan, Julie B. Robins, David G. Mayer, Michelle J. Sellin i Ian A. Halliday. "Does the quantity and timing of fresh water flowing into a dry tropical estuary affect year-class strength of barramundi (Lates calcarifer)?" Marine and Freshwater Research 55, nr 8 (2004): 787. http://dx.doi.org/10.1071/mf03198.
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The influence of fresh water flowing into estuaries on biological processes, such as recruitment of juvenile fish, is poorly understood, but important if freshwater resources are to be managed sustainably. Typically, lagged correlations between freshwater flows and fisheries production (i.e. catch) are used to support speculation that flows affect the survival of fish (and thus year-class strength) during their first year of life. The present study compares the relative strength of year classes in an estuarine fish population with two indices of fresh water flowing into the estuary, river flow and coastal rainfall. Year-class strength was estimated from a subset of the age structure of commercially caught adult barramundi (Lates calcarifer), which were sampled at seafood processors for three consecutive years. Strong and coherent fluctuations in year-class strength were observed. Positive correlations were found between the abundance of year classes (accounting for age) and quantity of fresh water flowing into the estuary during spring and summer, when barramundi spawn and young-of-the-year recruit to nursery habitats. Regression analysis was used to explore the relationships between year-class strength and environmental variables. A possible, but unproven, causal mechanism for the relationship is that the quantity of fresh water flowing into the estuary during spring and summer influences the survival of early life-history stages of barramundi (i.e. juvenile recruitment) by altering accessibility, productivity and or carrying capacity of nursery habitats.
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Glencross, Brett D., David Blyth, Nicholas Bourne, Susan Cheers, Simon Irvin i Nicholas M. Wade. "An analysis of partial efficiencies of energy utilisation of different macronutrients by barramundi (Lates calcarifer) shows that starch restricts protein utilisation in carnivorous fish". British Journal of Nutrition 117, nr 4 (28.02.2017): 500–510. http://dx.doi.org/10.1017/s0007114517000307.
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AbstractThis study examined the effect of including different dietary proportions of starch, protein and lipid, in diets balanced for digestible energy, on the utilisation efficiencies of dietary energy by barramundi (Lates calcarifer). Each diet was fed at one of three ration levels (satiety, 80 % of initial satiety and 60 % of initial satiety) for a 42-d period. Fish performance measures (weight gain, feed intake and feed conversion ratio) were all affected by dietary energy source. The efficiency of energy utilisation was significantly reduced in fish fed the starch diet relative to the other diets, but there were no significant effects between the other macronutrients. This reduction in efficiency of utilisation was derived from a multifactorial change in both protein and lipid utilisation. The rate of protein utilisation deteriorated as the amount of starch included in the diet increased. Lipid utilisation was most dramatically affected by inclusion levels of lipid in the diet, with diets low in lipid producing component lipid utilisation rates well above 1·3, which indicates substantial lipid synthesis from other energy sources. However, the energetic cost of lipid gain was as low as 0·65 kJ per kJ of lipid deposited, indicating that barramundi very efficiently store energy in the form of lipid, particularly from dietary starch energy. This study defines how the utilisation efficiency of dietary digestible energy by barramundi is influenced by the macronutrient source providing that energy, and that the inclusion of starch causes problems with protein utilisation in this species.
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Wade, N. M., L. H. Trenkner, I. Viegas, L. C. Tavares, M. Palma, S. Skiba-Cassy, K. Dias i in. "Dietary starch promotes hepatic lipogenesis in barramundi (Lates calcarifer)". British Journal of Nutrition 124, nr 4 (19.03.2020): 363–73. http://dx.doi.org/10.1017/s0007114520001051.
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AbstractBarramundi (Lates calcarifer) are a highly valued aquaculture species, and, as obligate carnivores, they have a demonstrated preference for dietary protein over lipid or starch to fuel energetic growth demands. In order to investigate how carnivorous fish regulate nutritional cues, we examined the metabolic effects of feeding two isoenergetic diets that contained different proportions of digestible protein or starch energy. Fish fed a high proportion of dietary starch energy had a higher proportion of liver SFA, but showed no change in plasma glucose levels, and few changes in the expression of genes regulating key hepatic metabolic pathways. Decreased activation of the mammalian target of rapamycin growth signalling cascade was consistent with decreased growth performance values. The fractional synthetic rate (lipogenesis), measured by TAG 2H-enrichment using 2H NMR, was significantly higher in barramundi fed with the starch diet compared with the protein diet (0·6 (se 0·1) v. 0·4 (se 0·1) % per d, respectively). Hepatic TAG-bound glycerol synthetic rates were much higher than other closely related fish such as sea bass, but were not significantly different (starch, 2·8 (se 0·3) v. protein, 3·4 (se 0·3) % per d), highlighting the role of glycerol as a metabolic intermediary and high TAG-FA cycling in barramundi. Overall, dietary starch significantly increased hepatic TAG through increased lipogenesis. Compared with other fish, barramundi possess a unique mechanism to metabolise dietary carbohydrates and this knowledge may define ways to improve performance of advanced formulated feeds.
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Rifai, Achmad Bahtiar, Titis Wulandari, Desi Surastini i Pramudya Dwi Wahyu Irawanto. "Betanodavirus Infection in Barramundi in Riau Islands". Jurnal Medik Veteriner 5, nr 1 (22.04.2022): 34–40. http://dx.doi.org/10.20473/jmv.vol5.iss1.2022.34-40.
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Diseases that can cause very high economic losses are viruses and one of them is Betanodavirus or commonly called Viral Nervous Necrosis (VNN). VNN is a disease registered by The Office International des Epizooties (OIE) and is a major problem in marine fishery production in the world. This virus is able to infect fish from larva size to consumption size in a short period of time to reach death with a frequency of 80% to 100%. The disease can infect barramundi and is spread throughout the Riau Islands. This study used a live fish sampling method showing VNN signs and freshly dead fish. The research samples were obtained from several cities and districts in the Riau Islands Province, including Batam City, Bintan Regency, and Tanjung Balai Karimun Regency, the sample selection was based on clinical symptoms and fish mortality. Then the samples were necropsied for eye and brain organs, then amplified using primers targeting the RNA 2 gene. The results showed that VNN had been detected in the Riau Islands Province, i.e. Batam City, Bintan Regency, and Tanjung Balai Karimun Regency.
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Gabor, Les J., Mukesh Srivastava, Jeff Titmarsh, Michelle Dennis, Melinda Gabor i Matthew Landos. "Cryptosporidiosis in Intensively Reared Barramundi (Lates Calcarifer)". Journal of Veterinary Diagnostic Investigation 23, nr 2 (marzec 2011): 383–86. http://dx.doi.org/10.1177/104063871102300235.
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Parwadani Aji, Ludi. "The operation and production of the barramundi, Lates calcarifer, at the Good Fortune Bay (GFB) Barramundi Farm Australia". Journal of Tropical Life Science 2, nr 1 (1.01.2012): 25–28. http://dx.doi.org/10.11594/jtls.02.01.06.
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Szűcs, István, Ildikó Edit Tikász, Laura Karnai i László Stündl. "Füstölt barramundi filé termékek hazai fogyasztói megítélésének vizsgálata". Táplálkozásmarketing 3, nr 1 (1.07.2016): 21–36. http://dx.doi.org/10.20494/tm/3/1/2.
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Hender, Amanda, Muhammad Siddik, Janet Howieson i Ravi Fotedar. "Black Soldier Fly, Hermetia illucens as an Alternative to Fishmeal Protein and Fish Oil: Impact on Growth, Immune Response, Mucosal Barrier Status, and Flesh Quality of Juvenile Barramundi, Lates calcarifer (Bloch, 1790)". Biology 10, nr 6 (7.06.2021): 505. http://dx.doi.org/10.3390/biology10060505.
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A feeding trial was conducted to test the effects of partial replacement of fishmeal (FM) protein and fish oil (FO) with partially defatted black soldier fly, Hermetia illucens insect protein, and oil, respectively, on growth performance, immune response, gut and skin barrier status, and flesh quality in juvenile barramundi. Four isonitrogenous and isocaloric diets used in the study were a control diet based on FM, 30% FM replaced with H. illucens protein (HiP), 30% FO replaced with H. illucens oil (HiO), and both 30% FM and 30% FO replaced with H. illucens protein and oil (HiPO). Diets were fed twice a day to satiety in triplicated groups of barramundi with an initial body weight of 1.74 ± 0.15 g per fish. At the end of the trial, growth and feed utilization indices were found insignificant (p > 0.05) between the test diets and control. A significant increase in bactericidal activity was observed in fish fed the HiP diet while serum lysozyme activity was unchanged. Stress-related heat shock proteins (HSP70 and HSP90) did not differ significantly among the test diets while immune-relevant genes (IL-1β and IL-10) were significantly upregulated in HiP and HiOP groups. The number of mucin cells were increased in the gut and skin of HiP and HiOP fed fish when compared to the control diet. The total fatty acid compositions (∑SFA, ∑MUFA, ∑PUFA, ∑n-3, and ∑n-6) in the muscles of barramundi were not significantly influenced with H. illucens protein and oil diets when compared to the control.
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Shaklee, JB, i JP Salini. "Genetic variation and population subdivision in Australian barramundi, Lates calcarifer (Bloch)". Marine and Freshwater Research 36, nr 2 (1985): 203. http://dx.doi.org/10.1071/mf9850203.
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Starch gel electrophoresis of enzymes and polyacrylamide gel electrophoresis of muscle proteins were used to study genetic variation in 589 barramundi from three widely separated regions in northern Australia. Presumed genetic variation was observed at 16 loci (out of 46 screened). However, only 11 of these were polymorphic at the p0.99 level. The average heterozygosity in this species was 0.032. In nearly all cases, genotypic proportions agreed closely with Hardy-Weinberg expectations. Repeated sampling in each region revealed little or no change in allele frequencies over a period of several months. Similarly, comparisons of allele frequencies for fish from marine and from freshwater localities in the south-eastem Gulf of Carpentaria failed to reveal significant genetic differences between habitats. Between-region heterogeneity Χ2 tests indicated substantial genetic differentiation at 10 of the 11I polymorphic loci. These data indicate the existence of at least three distinct stocks or subpopulations of barramundi in Australia.
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Wang, Chun Ming, Ze Yuan Zhu, Loong Chueng Lo, Felicia Feng, Grace Lin, Wen Tong Yang, Jian Li i Gen Hua Yue. "A Microsatellite Linkage Map of Barramundi, Lates calcarifer". Genetics 175, nr 2 (18.12.2006): 907–15. http://dx.doi.org/10.1534/genetics.106.059972.
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Hardin, Scott, i Jeffrey E. Hill. "Risk Analysis of Barramundi PerchLates calcariferAquaculture in Florida". North American Journal of Fisheries Management 32, nr 3 (czerwiec 2012): 577–85. http://dx.doi.org/10.1080/02755947.2012.675956.
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Al Khaziri, Buthaina, Adil Al Sulimani, Najla Al Mandhari, Gilha Yoon i Azhar Al-Busaidi. "Bacterial Infection in Farmed Barramundi Juveniles, Lates calcarifer". Journal of Agricultural and Marine Sciences [JAMS] 23 (10.01.2019): 76. http://dx.doi.org/10.24200/jams.vol23iss0pp76-80.
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In 2016, Barramundi, Lates calcaifer juveniles imported from Thailand to the aquaculture station at Sultan Qaboos University exhibited remarkable external clinical signs of losing scales, severe muscle necrosis, and ascites. Fin rot was also observed in the diseased fish. The mortality reached more than 90 % and it was assumed that certain bacterial species were associated with the diseased fish. The objective of the present study was to investigate the infection route of disease, revealing the causative agent and finding the most effective antibiotic treatment. The suspected pathogen vehicle was mosquito larvae in the outlet of the culture tank as bacterium was isolated inside the mosquito larvae. Primary, traditional phenotypic tests and the vitic test confirmed that the bacteria were pathogenic Aeromonas sobria and Lactococcus garvieae. Eight of the most commonly used antibiotics in the aquaculture industry was used for antibiotic susceptibility test. It showed that that Gentamycin was the most effective antibiotic while the most effective environmentally friendly source was henna, Lawsonia inermis, at a concentration of 10%.
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Al Khaziri, Buthaina, Adil Al Sulimani, Najla Al Mandhari i Gilha Yoon. "Bacterial Infection in Farmed Barramundi Juveniles, Lates calcarifer". Journal of Agricultural and Marine Sciences [JAMS] 23, nr 1 (10.01.2019): 76. http://dx.doi.org/10.24200/jams.vol23iss1pp76-80.
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In 2016, Barramundi, Lates calcaifer juveniles imported from Thailand to the aquaculture station at Sultan Qaboos University exhibited remarkable external clinical signs of losing scales, severe muscle necrosis, and ascites. Fin rot was also observed in the diseased fish. The mortality reached more than 90 % and it was assumed that certain bacterial species were associated with the diseased fish. The objective of the present study was to investigate the infection route of disease, revealing the causative agent and finding the most effective antibiotic treatment. The suspected pathogen vehicle was mosquito larvae in the outlet of the culture tank as bacterium was isolated inside the mosquito larvae. Primary, traditional phenotypic tests and the vitic test confirmed that the bacteria were pathogenic Aeromonas sobria and Lactococcus garvieae. Eight of the most commonly used antibiotics in the aquaculture industry was used for antibiotic susceptibility test. It showed that that Gentamycin was the most effective antibiotic while the most effective environmentally friendly source was henna, Lawsonia inermis, at a concentration of 10%.
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Balon, Eugene K. "Fish imagery in art 16: Ila Scholla's Barramundi". Environmental Biology of Fishes 33, nr 4 (kwiecień 1992): 394. http://dx.doi.org/10.1007/bf00010952.
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Loughnan, Shannon R., Carolyn Smith-Keune, Luciano B. Beheregaray, Nicholas A. Robinson i Dean R. Jerry. "Population genetic structure of barramundi (Lates calcarifer) across the natural distribution range in Australia informs fishery management and aquaculture practices". Marine and Freshwater Research 70, nr 11 (2019): 1533. http://dx.doi.org/10.1071/mf18330.
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Clarifying population structure of fish stocks is important for the sustainable exploitation of fisheries, along with informing collection of founder broodstock for the genetic improvement of aquaculture programs. Using 16 microsatellite DNA markers, the most comprehensive genetic survey to date (1297 individuals from 49 sample collections) of the population structure and genetic diversity of wild Australian barramundi (Lates calcarifer) was undertaken. The results point to the existence of two distinct genetic stocks (east and west) with isolation by geographic distance (IBD), and a central region of admixture between the stocks, located in an area where a historic land bridge once connected northern Australia with Papua New Guinea. Global levels of population differentiation were moderate (fixation index, FST=0.103, P<0.001) and IBD was identified as a factor influencing population structure across the sampled region. There was also evidence of temporal stability of population genetic structure over a period of 25 years. This study provides valuable information for improving programs of translocation, restocking and captive breeding for both the wild barramundi fishery and the aquaculture industry.
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Akmal Izwar, Sri Nuryati, Rahman i Rini Purnomowati. "Isolation, identification, and pathogenicity tests of pathogenic bacterial associated with black body syndrome in white barramundi Lates calcarifer B." Jurnal Akuakultur Indonesia 19, nr 1 (5.05.2020): 39–49. http://dx.doi.org/10.19027/jai.19.1.39-49.
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ABSTRACTThis study aimed to obtain the pathogenicity of isolated bacteria from maribund barramundi Lates calcarifer with black body syndrome (BBS). Moribund barramundi was collected from the Center for Mariculture Development (BBPBL), Lampung Province. Five of pathogenic bacteria were found, i.e. Pseudomonas stutzeri L01, Vibrioharveyi, Bacillus cereus, Salinococcus roseus, and Pseudomonas stutzeri L02. The bacteria were tested for LD50 to obtain two types of high virulent bacteria to be used for the pathogenicity test. P. stutzeri L01 and V. harveyi were the most virulent bacteria with a bacterial density of 107 CFU/mL. Both bacteria were used for pathogenicity test with three treatments: injection of P. stutzeri L01, V. harveyi, mix P. stutzeri L01 and V. harveyi, and phosphatebuffered saline as control. Clinical symptoms showed a blackened body, bleeding under the belly, and inactive. Mortality of fish injected with P. stutzeri L01, V. harveyi and mix P. stutzeri L01 and V. harveyi was 53.33%, 55.00%, and 58.33%, respectively. Erythrocyte and hemoglobin in all treatments were not significantly different (P>0.05). However, there was significantly different in the total leukocytes of mixed P. stutzeri and V. harveyitreatment (P<0.05). In conclusion, P. stutzeri L01, V. harveyi and mix of them resulted in black body syndrome (BBS) disease. Coinfection of P. stutzeri L01 and V. harveyi produce higher mortality than single infection.Keywords: barramundi, black body syndrome, histopathology, pathogenicityABSTRAKPenelitian ini bertujuan mendapatkan patogenisitas bakteri dari ikan kakap putih L. calcarifer yang memiliki gejala black body syndrome (BBS). Ikan diambil dari Balai Besar Pengembangan Budidaya Laut (BBPBL), Lampung. Lima jenis bakteri patogen ditemukan, yaitu Pseudomonas stutzeri L01, Vibrio harveyi, Bacillus cereus, Salinococcus roseus, dan Pseudomonas stutzeri L02. Bakteri diuji LD50 untuk mendapatkan dua jenis bakteri virulen tinggi yang akan digunakan untuk uji patogenisitas. P. stutzeri L01 dan V. harveyi adalah bakteri paling virulen dengan kepadatan bakteri 107 CFU/mL. Uji patogenisitas dengan tiga perlakuan: injeksi P. stutzeri L01, V. harveyi, campuran P. stutzeri L01 dan V. harveyi, serta phosphate-buffered saline sebagai kontrol. Gejala klinis menunjukkan tubuh menghitam, perdarahan di bawah perut, dan pergerakan tidak aktif. Mortalitas ikan yang disuntik dengan P. stutzeri L01, V. harveyi dan campuran P. stutzeri L01 dan V. harveyi masing-masing sebesar 53,33%, 55,00%, dan 58,33%. Eritrosit dan hemoglobin pada semua perlakuan tidak berbeda nyata (P>0,05). Namun, ada perbedaan yang signifikan dalam total leukosit perlakuan campuran P. stutzeri L01 dan V. harveyi(P<0,05). P. stutzeri L01, V. harveyi dan campuran P. stutzeri L01, V. harveyi dapat menyebabkan black bodysyndrome (BBS). Koinfeksi P. stutzeri L01 dan V. harveyi menghasilkan mortalitas lebih tinggi daripada infeksi tunggal.Kata kunci: barramundi, black body syndrome, histopatologi, patogenisitas
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Power, Trent, Matthew Moore i Jack McCann. "Movement of juvenile barramundi (Lates calcarifer) through a cone ramp fishway at a modified coastal wetland in central Queensland, Australia". Pacific Conservation Biology 25, nr 4 (2019): 421. http://dx.doi.org/10.1071/pc18062.
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Barramundi (Lates calcarifer) often migrate from marine to fresh water as juveniles. In March 2018a relatively large number of small juveniles (<100mm) were recorded moving through a fishway on a tidal interface barrier in central Queensland, Australia. This is in contrast to the few documented observations of transitional movements, which involved mostly larger juveniles (250–400mm).
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Collins, Geoffrey Mark, Timothy Darren Clark i Alexander Guy Carton. "Physiological plasticity v. inter-population variability: understanding drivers of hypoxia tolerance in a tropical estuarine fish". Marine and Freshwater Research 67, nr 10 (2016): 1575. http://dx.doi.org/10.1071/mf15046.
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Physiological plasticity and inter-population variability (e.g. local adaptation) are two key drivers in determining the capacity for species to cope with environmental change, yet the relative contribution of each parameter has received little attention. Here, we investigate the acclimation potential of two geographically distinct populations of the barramundi (Lates calcarifer) to diel hypoxia. Fish were exposed to a daily hypoxia challenge of 6h below 62% saturation, down to a minimum of 10±5% saturation, followed by a return to normoxia. Respiratory and haematological variables were assessed after 8 and 16 days of daily hypoxia exposure. Hypoxia tolerance (measured as the critical oxygen tension; [O2]crit) was not different between populations and not different from control fish after 8 days ([O2]crit=20.7±2.8% saturation), but improved similarly in both populations after 16 days ([O2]crit=16.5±3.1% saturation). This improvement corresponded with increases in haematocrit and haemoglobin, but not an increase in the mean cell haemoglobin concentration. Given the similarity of the response between these two geographically distinct populations, we conclude that hypoxia tolerance for barramundi may be more dependent on physiological plasticity than inherent variability between populations.
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Norin, Tommy, i Timothy D. Clark. "Fish face a trade-off between ‘eating big’ for growth efficiency and ‘eating small’ to retain aerobic capacity". Biology Letters 13, nr 9 (wrzesień 2017): 20170298. http://dx.doi.org/10.1098/rsbl.2017.0298.
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Feeding provides the necessary energy to fuel all fitness-related processes including activity, growth and reproduction. Nevertheless, prey consumption and digestive processes can have physical and physiological trade-offs with other critical functions, many of which are not clearly understood. Using an ambush predator, barramundi ( Lates calcarifer ), fed meals ranging 0.6–3.4% of body mass, we examined interrelations between meal size, growth efficiency and surplus aerobic metabolic capacity (aerobic scope, AS). Large meals required a greater absolute investment of energy to process (a larger so-called specific dynamic action, SDA), but the percentage of digestible meal energy required in the SDA response (SDA coefficient) decreased with increasing meal size. Combined with the findings that growth rate and growth efficiency also increased with food intake, our results demonstrate that it is energetically advantageous for fish to select large prey. However, following a large meal, SDA processes occupied up to 77% of the available AS, indicating that other oxygen-demanding activities like swimming may be compromised while large meals are processed. This trade-off between meal size and AS suggests that fishes like barramundi would benefit from regulating prey size based on imminent requirements and threats.
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Chaklader, Md Reaz, Muhammad A. B. Siddik i Ravi Fotedar. "Total replacement of fishmeal with poultry by-product meal affected the growth, muscle quality, histological structure, antioxidant capacity and immune response of juvenile barramundi, Lates calcarifer". PLOS ONE 15, nr 11 (12.11.2020): e0242079. http://dx.doi.org/10.1371/journal.pone.0242079.
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The present study investigates if the total replacement of dietary fishmeal (FM) with poultry by-product meal (PBM), supplemented with methionine influences the muscle fatty acids composition, normal gut morphology, histological traits of the liver, muscle, and gill, liver enzymes, immune and antioxidant response, and stress-related gene in juvenile barramundi, Lates calcarifer in relation to growth and feed utilization. Barramundi (3.58±0.01g) were randomly distributed into six 300 L seawater recirculating tanks (25 fish/tank) and fed two formulated isonitrogenous and isolipidic diets for 6 weeks. The control diet had FM as the sole animal protein source, whereas other test diet had only PBM as an animal protein source. Dietary PBM affected the fish performance and feed utilization. Regarding muscle fatty acid profile, total saturated fatty acids and monounsaturated fatty acids elevated while total PUFA particularly n-3 LC-PUFA and EPA decreased in PBM fed fish than control diet fed fish. Liver, muscle, gill, and intestinal histology showed no obvious alteration in control diet fed fish, however, more lipid droplets and hepatic vacuolization in the liver, necrotic myotome in muscle, hyperplasia in secondary lamellae in gill and short and broken folds in the intestine were observed in PBM fed fish. Similar to light microscopy observation of intestinal morphology, the transmission electron microscopy (TEM) analysis revealed shorter and smaller microvilli in fish fed PBM. Histopathological alterations in the liver of PBM fed fish were further associated with the elevated levels of aspartate aminotransferase (AST) and glutamate dehydrogenase (GLDH) and the significant upregulation of stress-related genes, HSP70 and HSP90. Also, a negative influence on lysozyme activity, and antioxidant enzymatic activities were recorded in fish fed PBM. Overall, it can be concluded that a total substitution of FM protein by methionine supplemented PBM negatively influenced the growth performance, liver health, histological traits of different organs, immune and antioxidant response, and expression of stress-related genes in juvenile barramundi.
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Tucker, John W., Malcolm R. Mackinnon, D. John Russell, Julian J. O'Brien i Emanuella Cazzola. "Growth of Juvenile Barramundi (Lates calcarifer) on Dry Feeds". Progressive Fish-Culturist 50, nr 2 (kwiecień 1988): 81–85. http://dx.doi.org/10.1577/1548-8640(1988)050<0081:gojblc>2.3.co;2.
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