CCPortal
DOI10.1128/AEM.02203-13
Decay of Fecal Indicator Bacterial Populations and Bovine-Associated Source-Tracking Markers in Freshly Deposited Cow Pats
Oladeinde, Adelumola; Bohrmann, Thomas; Wong, Kelvin; Purucker, S. T.; Bradshaw, Ken; Brown, Reid; Snyder, Blake; Molina, Marirosa
发表日期2014
ISSN0099-2240
卷号80期号:1页码:110-118
英文摘要

Understanding the survival of fecal indicator bacteria (FIB) and microbial source-tracking (MST) markers is critical to developing pathogen fate and transport models. Although pathogen survival in water microcosms and manure-amended soils is well documented, little is known about their survival in intact cow pats deposited on pastures. We conducted a study to determine decay rates of fecal indicator bacteria (Escherichia coli and enterococci) and bovine-associated MST markers (CowM3, Rum-2-bac, and GenBac) in 18 freshly deposited cattle feces from three farms in northern Georgia. Samples were randomly assigned to shaded or unshaded treatment in order to determine the effects of sunlight, moisture, and temperature on decay rates. A general linear model (GLM) framework was used to determine decay rates. Shading significantly decreased the decay rate of the E. coli population (P < 0.0001), with a rate of -0.176 day(-1) for the shaded treatment and -0.297 day(-1) for the unshaded treatment. Shading had no significant effect on decay rates of enterococci, CowM3, Rum-2-bac, and GenBac (P > 0.05). In addition, E. coli populations showed a significant growth rate (0.881 day(-1)) in the unshaded samples during the first 5 days after deposition. UV-B was the most important parameter explaining the decay rate of E. coli populations. A comparison of the decay behaviors among all markers indicated that enterococcus concentrations exhibit a better correlation with the MST markers than E. coli concentrations. Our results indicate that bovine-associated MST markers can survive in cow pats for at least 1 month after excretion, and although their decay dynamic differs from the decay dynamic of E. coli populations, they seem to be reliable markers to use in combination with enterococci to monitor fecal pollution from pasture lands.


语种英语
WOS记录号WOS:000328851400012
来源期刊APPLIED AND ENVIRONMENTAL MICROBIOLOGY
来源机构美国环保署
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/62513
作者单位US EPA, Off Res & Dev, Natl Exposure Res Lab, Athens, GA USA
推荐引用方式
GB/T 7714
Oladeinde, Adelumola,Bohrmann, Thomas,Wong, Kelvin,et al. Decay of Fecal Indicator Bacterial Populations and Bovine-Associated Source-Tracking Markers in Freshly Deposited Cow Pats[J]. 美国环保署,2014,80(1):110-118.
APA Oladeinde, Adelumola.,Bohrmann, Thomas.,Wong, Kelvin.,Purucker, S. T..,Bradshaw, Ken.,...&Molina, Marirosa.(2014).Decay of Fecal Indicator Bacterial Populations and Bovine-Associated Source-Tracking Markers in Freshly Deposited Cow Pats.APPLIED AND ENVIRONMENTAL MICROBIOLOGY,80(1),110-118.
MLA Oladeinde, Adelumola,et al."Decay of Fecal Indicator Bacterial Populations and Bovine-Associated Source-Tracking Markers in Freshly Deposited Cow Pats".APPLIED AND ENVIRONMENTAL MICROBIOLOGY 80.1(2014):110-118.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Oladeinde, Adelumola]的文章
[Bohrmann, Thomas]的文章
[Wong, Kelvin]的文章
百度学术
百度学术中相似的文章
[Oladeinde, Adelumola]的文章
[Bohrmann, Thomas]的文章
[Wong, Kelvin]的文章
必应学术
必应学术中相似的文章
[Oladeinde, Adelumola]的文章
[Bohrmann, Thomas]的文章
[Wong, Kelvin]的文章
相关权益政策
暂无数据
收藏/分享

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。