bioaccumulation

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Related to Bio-accumulation: Bioconcentration

bioaccumulation

(bī′ō-ə-kyo͞om′yə-lā′shən)
n.
The accumulation of a substance, such as a toxic chemical, in various tissues of a living organism: the bioaccumulation of mercury in fish.

bi′o·ac·cu′mu·la′tive adj.

bioaccumulation

The accumulation of chemicals or nutrients in a living organism against an inorganic background (e.g., the external environment), which is due to a high partition coefficient and resistance to degradation by the bioaccumulating organism.

bioaccumulation

the process of concentration of chemical contaminents in animal tissues as they move higher up the food chain e.g. pesticides and heavy metals stored in fatty tissues are passed on from one predator to a higher predator, the resulting concentrations being increasingly harmful and most so to the top predators.

bioaccumulation

process producing an increase in the concentration of chemicals (usually toxins) in the tissues of organisms with each increase in the trophic level in the food chain. Examples include chlorinated hydrocarbons which reach their greatest concentrations in predatory birds and pelicans, and ciguatera in which the toxins are concentrated in large predatory fish such as gropers, barracudas and mackerel.
References in periodicals archive ?
Heavy metal concentrations in water, sediments and their bio-accumulations in fishes and oyster in Shitalakhya River.
Bio-accumulation of pesticides in shrimps and fish was found to be with in the permissible limit after four months rearing since none of the detected pesticides seem to exceed their ADI.
This colourless solid has emerged as a highly controversial agrochemicals due to its acute toxicity, potential for bio-accumulation, and role as an endocrine disruptor," the petition said.
Scientists, managers, and policy makers summarize the discussions at the workshop on what people need to know about selenium; environmental sources, speciation, and partitioning; bio-accumulation and the trophic transfer of selenium; selenium toxicity to aquatic organisms; and risk characterization.
Due to strong carbon--fluorine bonds, PFOA does not break down in the environment, potentially leading to bio-accumulation.
The increased bio-accumulation of metals (resulting from burning of fossil fuels, incineration of waste, industrial effluents, agricultural practices and dissolution of metals from basement rocks by acidic solutions) in fish via lugworms, barnacles, algae, and other planktonic and benthic organism on which fish feed has necessitated public health concern worldwide.
Young children have less developed elimination of drugs and larger surface area per body weight than adults, leading to a possible higher uptake and bio-accumulation.
There is bio-accumulation of tritium in both the fish and other organisms.
The most pronounced effects on wildlife are found in top predators due to bio-accumulation which is, of course, of great concern to humans as we are at the top of the food chain.
Nobody expects a film about persistent organic pollution, vinyl siding and bio-accumulation to be funny.
The industrial sewage from metal based industries must not be used for crop production and disposal of the effluent water without treatment must be avoided to restrict bio-accumulation of the metals and subsequententry into the food chain.