Users' questions

What are biomarkers in fish?

What are biomarkers in fish?

Physiological biomarkers used in fish include (1) alterations in hematological parameters such as hematocrit, plasma ions, or circulating hormones, (2) body condition indices such as condition factor (body mass/length3), (3) organosomatic indices such as hepatosomatic index (liver mass/body mass × 100 %) or …

Which enzyme is biomarker of aquatic toxicity?

In environmental studies, the paraoxonase gene (PON1) was identified as one of the first environmentally relevant biomarkers of susceptibility. Paraoxonase, present in the liver and plasma, is an enzyme involved in lipid oxidation.

Why Aquaponics is the integrated aquaculture system?

Aquaponic systems use the effluent water for soilless plant cultivation [16], and the Integrated Multitrophic Aquaculture systems’ overarching objective is to feed the more primitive species of organisms with feed remnants of higher-level aquaculture species, thus reducing waste discharged into the environment.

Does aquaponic is considered as a RAS system?

Aquaponic is a special form of recirculating aquaculture systems (RAS), namely a polyculture consisting of fish tanks (aquaculture) and plants that are cultivated in the same water circle (hydroponic).

What can biological markers tell us about the water contaminants?

These biological endpoints include molecular, biochemical and physiological markers (i.e. biomarkers) that when integrated, can clarify issues of contaminant bioavailability, bioaccumulation and ecological effects while enabling a better understanding of the effects of non-chemical stressors.

What is aquaculture and aquaponics?

is that aquaculture is the cultivation of aquatic produce such as aquatic plants, fish and other aquatic animals while aquaponics is a sustainable food production system that combines traditional aquaculture with hydroponics, with effluent from the water being used as nutrition for the plants.

What is aquaponics technology?

Aquaponics is an environmentally friendly food production technology that couples aquaculture (e.g. production of fish) and horticulture as hydroponics (e.g. production of vegetables) in one system. Compared to a single fish or plant production, aquaponics saves water, energy and nutrients.

What is RAS technology?

Recirculatory Aquaculture System (RAS) is a technology where water is recycled and reused after mechanical and biological filtration and removal of suspended matter and metabolites. The technology is based on the use of mechanical and biological filters and the method can be used for any species grown in aquaculture.

What is the aquaculture process?

The phases of aquaculture include broodstock holding, hatchery production of seed, nursing systems, grow-out systems, and quarantining. Together, this mix of intensity, culture systems, species, farming systems and different phase of culture create an extreme diverse collection of aquaculture systems and technologies.

What means aquaponics?

Aquaponics is a cooperation between plants and fish and the term originates from the two words aquaculture (the growing of fish in a closed environment) and hydroponics (the growing of plants usually in a soil-less environment).