Quito's virome: Metagenomic analysis of viral diversity in urban streams of Ecuador's capital city

Guerrero-Latorre, Laura; Romero, Brigette; Bonifaz, Edison; Timoneda, Natàlia; Rusiñol, Marta; Gironés, Rosina; Ríos-Touma, Blanca

doi:10.1016/j.scitotenv.2018.07.213

Cited by 44 publications

(35 citation statements)

References 74 publications

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“…Lack of wastewater treatment has always been a health hazard. This is true also in Quito ( Guerrero-Latorre et al, 2018 ) but now we know that microplastics are also an important factor to consider. Freshwater biodiversity in tropical countries is highly unknown and diverse, so the effects of pollutants in this diversity are hard to measure, but it is probable that we already have lost or endangered several species.…”

Section: Discussionmentioning

confidence: 83%

“…This is an important step, but solid waste management should be improved, as it is expected that by 2025, MSW in Ecuador will have doubled from the values recorded in 2012 ( Hoornweg and Bhada-Tata, 2012 ). Furthermore, the implementation of wastewater treatment plants is imperative in these cities, not only because of microplastics, but because of all the health hazards for humans and the impacts on the biodiversity of freshwater mountain ecosystems ( Guerrero-Latorre et al, 2018 ; Encalada et al., 2019 ).…”

Section: Discussionmentioning

confidence: 99%

“…In cities such as Quito, the growth of the urban area has generated problems in aquatic ecosystems, including the direct disposal of wastewater and the urbanization of riparian habitats ( da Cruz e Souza & Ríos-Touma, 2018 ). Moreover, the increase in population and industry, with the waste produced by both, has over time generated sanitary problems which have endangered the use of water reserves ( Guerrero-Latorre et al, 2018 ). In Quito, lack of wastewater treatment could be one of the main contributors of plastic reaching the Pacific Ocean, since less than 10% of the city's wastewater is treated (EPMAPS, 2016).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microplastics in tropical Andean rivers: A perspective from a highly populated Ecuadorian basin without wastewater treatment

Donoso

Ríos-Touma

2020

Heliyon

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In recent years, the problem of microplastic pollution has begun to receive more attention. Currently, it is known that these particles, less than 5 mm in diameter, can lead to problems for both ecosystems and human health due to the toxicity of their components. In spite of this, research on this topic has focused mainly on the oceans, leaving aside rivers, which are the main source of these pollutants to oceans. Additionally, information is limited to certain rivers in countries of the northern hemisphere where wastewater treatment plants can retain up to 80% of microplastics. In South America, microplastic pollution is practically unknown, and wastewater treatment in several areas is still limited. This study focused on quantifying the microplastics present in the upper basin of the Guayllabamba River, in the Tropical Andes, a biodiversity hotspot. This basin is where the capital city of Ecuador, Quito, is located. Less than 10% of the wastewater in Quito is treated and the rest is dumped to rivers without treatment. We performed a physical analysis of microplastics, by weight and by category of microplastic, in various sampling points before and after urban areas. We found microplastic pollution beginning in the headwaters of the basin, with significant increases in urban areas of the Metropolitan District of Quito. Values of suspended microplastics in rivers after urban areas were higher than those recorded in the literature. Plastic levels in sediment were also higher after urban areas. Microplastics were highly correlated with other water pollutants, showing the prevailing necessity of wastewater treatment plants, because all of this pollution is dumped into rivers that flow from 2800 m a.s.l. to highly diverse freshwater ecosystems and human populations located downstream that depend on these aquatic sources, and finally to the Pacific Ocean.

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Section: Discussionmentioning

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microplastics in tropical Andean rivers: A perspective from a highly populated Ecuadorian basin without wastewater treatment

Donoso

Ríos-Touma

2020

Heliyon

Self Cite

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“…Таким образом, река в г. Кито, получающая фекальные воды со всего города, сильно загрязнена микроорганизмами и другими загрязнителями, распространяя их вдоль бассейна реки [33]. В проведённых ранее исследованиях описано вирусное разнообразие патогенов человека, присутствующих в городской реке, и подчёркнут риск здоровью населения, которое может использовать эти воды для ирригационных или рекреационных целей [34]. Для оценки микробного влияния в речных водах использовали в качестве вирусного индикатора -человеческий аденовирус, что было связано с его частым обнаружением [ .…”

Section: выделение вируса Sars-cov-2 из речной водыunclassified

Возможность Обитания Возбудителя Covid- 19 В Водной Среде (Обзор Литературы)

Zhuravlev¹,

Калюжин²,

Кулак³

et al. 2020

Preprint

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В настоящей работе представлен обзор научных данных зарубежных и российских исследователей о возможном обитании возбудителя COVID-19 в водной среде, сведений о путях распространения инфекционного агента SARS-CoV-2 и принимаемых мерах по борьбе с ним в водной среде. Показано присутствие возбудителя COVID-19 в различных объектах окружающей среды: системах водоснабжения, сточных водах, поверхностных водах. Определены методы детекции вирусных частиц SARS-CoV-2 на основе выявления штаммов других вирусов в объектах окружающей среды. Это позволило понять, что попадание вируса в экосистему происходит за счёт абсорбирования с различными фомитами. В обзоре представлены результаты работ, проведенных в ряде стран во время пандемии, подтверждающие присутствие COVID-19 в речной воде. Часть исследований указывает на устойчивость вирусных частиц, присутствующих в объектах окружающей среды, к дезинфицирующим средствам, что в свою очередь определяет актуальность углубленных исследований с позиции обеспечения санитарно- противоэпидемического режима на станциях водоподготовки.

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“…In Latin America, the sanitary systems, which are still under development, have a low sewage treatment coverage (30%), generating a potential health risk for human and animal populations [ 11 ]. Chile is a middle-income country with a population of 19 million inhabitants, of which approximately 7 million inhabitants are concentrated in the capital, Santiago de Chile, making it the seventh largest city in the Americas.…”

Section: Introductionmentioning

confidence: 99%

Metagenomic Insights into the Sewage RNA Virosphere of a Large City

Guajardo-Leiva

Chnaiderman

Gaggero

et al. 2020

Viruses

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Sewage-associated viruses can cause several human and animal diseases, such as gastroenteritis, hepatitis, and respiratory infections. Therefore, their detection in wastewater can reflect current infections within the source population. To date, no viral study has been performed using the sewage of any large South American city. In this study, we used viral metagenomics to obtain a single sample snapshot of the RNA virosphere in the wastewater from Santiago de Chile, the seventh largest city in the Americas. Despite the overrepresentation of dsRNA viruses, our results show that Santiago’s sewage RNA virosphere was composed mostly of unknown sequences (88%), while known viral sequences were dominated by viruses that infect bacteria (60%), invertebrates (37%) and humans (2.4%). Interestingly, we discovered three novel genogroups within the Picobirnaviridae family that can fill major gaps in this taxa’s evolutionary history. We also demonstrated the dominance of emerging Rotavirus genotypes, such as G8 and G6, that have displaced other classical genotypes, which is consistent with recent clinical reports. This study supports the usefulness of sewage viral metagenomics for public health surveillance. Moreover, it demonstrates the need to monitor the viral component during the wastewater treatment and recycling process, where this virome can constitute a reservoir of human pathogens.

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Quito's virome: Metagenomic analysis of viral diversity in urban streams of Ecuador's capital city

Cited by 44 publications

References 74 publications

Microplastics in tropical Andean rivers: A perspective from a highly populated Ecuadorian basin without wastewater treatment

Microplastics in tropical Andean rivers: A perspective from a highly populated Ecuadorian basin without wastewater treatment

Возможность Обитания Возбудителя Covid- 19 В Водной Среде (Обзор Литературы)

Metagenomic Insights into the Sewage RNA Virosphere of a Large City

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