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Biological & Biomedical Sciences
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Possible Eradication Of Dengue Mosquitos With The Help Of Emerging Water Contaminants (Article Sample)

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This article was written in compliance to the requirement of a course titled, "SPECIALISED reporting", where i was required to study a published biology thesis and write a feature article. the article was about emerging water contaminant's effect effect to mosquitos' life cycle.

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Content:

Date: November 12, 2017Page Number: 5
By: Jaeger Dwayne G. TamaraySlug: EWCs
Suggested Heading: Eradication of Dengue Carrying Mosquitos: A Possibility or a Myth
Eradication of the Aedes Aegypti or commonly known as mosquitos has been a topic worth of researching for the past years. The main reason that scientists are in unison to find a way to eradicate this life form is because, according to Judith Yabut, a Pediatrician, it is the carrier of one of the most deadliest disease in the world, dengue. Scientists went as far as inventing insecticides to kill these insects to creating dengue vaccines to help humans defend themselves from this disease. But none of these can seem to stop insects from breeding and infecting disease. However, an emerging topic of study is currently showing signs of affecting the life cycle of mosquitos. These are called “Emerging Water Contaminants” (EWC).
Water bodies make up almost 71 percent of our earth's surface and 3.5 percent of the water bodies is freshwater. According to an article in theguardain.com, as of 2011 out of the 8.7 million species residing earth, an approximated 2.2 million organisms live in the water. How does this relate to EWCs and mosquitos? Well EWCs are Emerging Contaminants that are found in water. Emerging contaminants are defined by Paraoan and Vidas, former biology students of University of the Philippines Baguio, in their undergraduate thesis, “Evaluating the Impact of Emerging Water Contaminants on the Life Stages of Aedes Aegypti L”, as “any synthetic or naturally occurring chemical or any microorganism that is not commonly included in the environment but has the potential to enter the environment and cause known or suspected adverse ecological and/or human health effects”. Apparently according to Mayer Calma, Biologist and Biology Instructor in the University of the Philippines Baguio, the study of EWCs are relatively new; therefore its ecological and human health effects are not yet fully understood and discovered.
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In another note, these EWCs are commonly found in the freshwater such as rivers, lakes, and wetlands, which happens to be the place where mosquitos lay their eggs and grow into an adult mosquito. In Paraoan and Vidas' 2013 study, they evaluated the impact of three EWCs: a. Erythromycin, which is an antibiotic, b. Naproxen, which is a pain reliever, and c. Propylparaben, which commonly comes in a form of cosmetic products such as hairstyling wax. How exactly does these contaminants end up in the freshwater?
According to Calma, “as we intake erythromycin and naproxen, we eventually release them through our urine and feces” the same goes with propylparaben “as we use them, we eventually wash them off when we bathe and these will all lead to the sewage”, which are all connected to the bodies of fresh water. Paraoan and Vidas, in their study, used these three EWCs to test if such contaminants have effects on the life cycle of mosquitos: a.) Eclosion or the hatching of mosquito's egg, b.) Pupation or the process of mosquito to develop into pupa (a stage where the insect transform from immature to mature), c.) Emergence or the coming out of the mosquito from its pupa casing assuming into its adult form, and d.) Fec

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