Uptake And Bioaccumulation Of Microplastics Case Study

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4. Uptake and bioaccumulation of plastic derived chemicals

A key factor contributing to the bioavailability of microplastics is their small size, density, color, surface (smooth or rough) (Stephanie L. Wright a,2013).
Food chain disturbance in marine environment is the major problem because due to ingestion of plastic which consists of polychlorinated biphenyl (PCB), POP and PAH. They absorbs/bioaccumulation in the fatty acid of living organism and cause death of the species. At least 180 marine animal species and birds have been found to ingest plastic (Teuten et al.
2009)( Elin Andersson 2014).

Plastic cause skin wound, blockage of the digestive tract followed by plastic satiation, starvation and general weakness often leading to death,
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They are heterotrophs and depend on autotrophies. Krill are shrimp-like marine invertebrate animals. These are smaller zooplankton but it is important for larger marine mammals as food for baleen whales, whale sharks, seals, and a few seabird species. Krill phylum is Arthropod.
Krill form key trophic link between primary producer and higher level in marine food web worldwide. The size range of krill is about two inches (five centimeters) in length. Microorganism like diatoms etc when colonize on microplastic beads or nanoplastic then it fed the krill then microplastic beads transfer in it which contain the pollutants like POPs, PCB (Andrady 2011)
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Cod is dark-spotted and ranges from greenish or grayish to brown or blackish. Cod fish is demersal fish (bottom living). Where it fed the krill in which already plastic beads or microplastic present that transfer into cod fish and bioaccumulate in it. These platic accumulation causing reduce feeding stimulus and hepatic stress, hormones imbalance

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