Occurrence of tributyltin (TBT)-resistant bacteria is not related to TBT pollution in Mekong River and coastal sediment: with a hypothesis of selective pressure from suspended solid.

作者： Fujiyo Suehiro , Hiroko Mochizuki , Shinji Nakamura , Hisato Iwata , Takeshi Kobayashi

DOI: 10.1016/J.CHEMOSPHERE.2007.03.033

关键词: Water pollution 、 Dry season 、 Tributyltin 、 Environmental chemistry 、 Bacteria 、 Ecology 、 Pollution 、 Environmental science 、 Suspended solids 、 Aquatic ecosystem 、 Sediment

摘要: Tributyltin (TBT) is organotin compound that toxic to aquatic life ranging from bacteria mammals. This study examined the concentration of TBT in sediment and near Mekong River distribution TBT-resistant bacteria. concentrations ranged <2.4 2.4 ng/g (dry wt) river <2.4-15 ng g-1 harbor sediment. Viable count total 2.0 × 104 1.4 107 cfu/g, counts <1.0 102 2.5 cfu/g. The estimated occurrence rate <0.01 34% was highest upstream sites Cambodia. occurrences were unrelated, chemicals other than might induce resistance. more abundant dry season rainy season. Differences selection process between seasons using an advection-diffusion model a suspended solid (SS) conveys chemicals. dilution-diffusion time over distance 120 km downstream release site 20 days during 5 season, suggesting at surface could be exposed SS for longer periods © 2007 Elsevier Ltd. All rights reserved. Author Keywords: Bacteria; Mekong; Resistant; Sediment; Suspended solid; Index Concentration (process); Mammals; Sediments; Suspensions (fluids); Diffusion model; solids (SS); Tributyltin; Water pollution; tributyltin; abundance; advection; bacterium; coastal sediment; (composition); diffusion; fluvial deposit; toxicity; antibiotic resistance; article; bacterial colonization; count; Cambodia; river; seashore; suspension; water Colony Count, Microbial; Drug Resistance, Bacterial; Environmental Monitoring; Geologic Japan; Models, Chemical; Rivers; Trialkyltin Compounds; Microbiology; Pollutants, Asia; Eurasia; River; Southeast Mammalia

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Occurrence of tributyltin (TBT)-resistant bacteria is not related to TBT pollution in Mekong River and coastal sediment: with a hypothesis of selective pressure from suspended solid.

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Occurrence of tributyltin (TBT)-resistant bacteria is not related to TBT pollution in Mekong River and coastal sediment: with a hypothesis of selective pressure from suspended solid.

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