bioaccumulation

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Related to Bio-accumulate: Biomagnify

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.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

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.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
Catla catla, Labeo rohita and Cirrhina mrigala in their natural habitats makes it necessary to determine their sensitivity, tolerance limits and ability to bio-accumulate metals during chronic exposure of waterborne metals mixtures.
These carnivorous fish species are residing on the top of aquatic food chain and, therefore, exhibit greater propensity to bio-accumulate metals from the aquatic environment.
Once POPs are ingested by humans, these bio-accumulate in human bodies - we can never get rid of them !
Indigenous earthworms such as Libyodrilus violaceus, Alma millsoni and Eudrilus eugeniae in this study were revealed to bio-accumulate heavy metals in their body tissues from their soil substrates as has been reported for various earthworm species by other workers.
The organochlorine termiticides have long been recognised as a cause for environmental concern because of their persistent properties and tendency to bio-accumulate in wild life.
For that reason, rotenone and other bio-constituents seemed to bio-accumulate either in the fine or coarse roots.
"Fighting this centuries' old scourge requires global action due to its propensity to bio-accumulate in the food chain and its trans-boundary movement and impact," Special Rapporteur Pallemaerts said.
This was true for the organophosphate insecticides, which do not bio-accumulate the way the neonicotinoids do.
"Many companies call their products all-natural, yet 90% of the topical pain products on the shelves today have parabens that were once used as emulsifiers to prolong the shelf life but have recently been shown to be carcinogens that bio-accumulate in human tissue and are also endocrine altering," he adds.
Microbial metabolism of deposited mercury can create methyl mercury, which has the capacity to collect in organisms (bio-accumulate) and to concentrate up food chains (bio-magnify), especially in the aquatic food chain.
"They selected the one compound that doesn andrsquo;t bio-accumulate, as opposed to testing for the toxic ingredients that have a low safety threshold and do build up in tissue.
"Crustaceans, bivalves, and other invertebrates do not enjoy this ability, and there is a possibility that even small amounts of oil will eventually bio-accumulate into larger species and badly disrupt the ecosystem.