Bøger af Nirmala Ganesan

Aquaculture is currently the fastest-growing food production sector in the world, but diseases, especially bacterial infections, remain the primary constraints to its continued expansion. The use of antibiotics to control diseases creates some problems. These effects include antibiotic resistance, accumulation in the tissue, immunosuppression, and an ecological threat to coastal areas heavily exploited for the industrial cultivation of fish. Probiotics are living microorganisms that, when ingested, provide a health benefit to the host. Therefore, the development of suitable probiotic strains for L. rohita holds promise for sustaining aquaculture production of this tropical freshwater fish. In the current work, we review the impact of probiotics on freshwater fin fish aquaculture. Data were gathered from articles published during the last decade that examined the effects of probiotics on fish growth, FCR, and water quality in freshwater fishponds/tanks.

Micro plastics are small fragments of plastic trash with a diameter smaller than 5 millimeters. They gather in the environment as a result of wear, such as fibers released from textiles, or as a direct release of small particles, like those used in cosmetics. The fragmentation of larger plastic objects in the atmosphere is thought to be the primary source of micro plastic. In remote areas like the arctic and deep sea, as well as freshwater and marine environments, micro plastics are broadly dispersed. Micro plastics are known to be ingested by a variety of organisms, and laboratory studies suggest that they may have negative impacts. Co-contaminants like chemical additives and pollutants that have been sorbed from seawater can also be transported by plastic scraps. Ingestion of these chemicals can release them into organisms, but there is little proof that plastics act as a significant conduit for toxicological effects in situations that are pertinent to the environment.

Micro plastics are small fragments of plastic trash with a diameter smaller than 5 millimeters. They gather in the environment as a result of wear, such as fibers released from textiles, or as a direct release of small particles, like those used in cosmetics. The fragmentation of larger plastic objects in the atmosphere is thought to be the primary source of micro plastic. In remote areas like the arctic and deep sea, as well as freshwater and marine environments, micro plastics are broadly dispersed. Micro plastics are known to be ingested by a variety of organisms, and laboratory studies suggest that they may have negative impacts. Co-contaminants like chemical additives and pollutants that have been sorbed from seawater can also be transported by plastic scraps. Ingestion of these chemicals can release them into organisms, but there is little proof that plastics act as a significant conduit for toxicological effects in situations that are pertinent to the environment.

Heavy metal contamination is a major issue that pollutes the atmosphere in a variety of ways due to the impact of industries in a number of countries. The best available remedial methods for a variety of heavy metals typically found in polluted soils (lead, chromium, arsenic, zinc, cadmium, copper, mercury, and nickel). Heavy metal pollutants have been removed from the atmosphere using a variety of strategies, including physical, chemical, and biological methods. Soil sample were collected from IllEdu CFRD cucumber growing soil .The present study was conducted to investigate about the remediating heavy metals from soil using Biofertilizers and their effects on Amaranthus seed germination. Various carbon sources, nitrogen sources, temperature and pH are the different parameter which is optimized for the contaminated soil sample. Reduction of extractable metal concentration and phytotoxicity could be evaluated and demonstrated by the feasibility of various biofertilizer in fixing remediation.