Evaluation of the effect of temperature and nutrients on the survival of Campylobacter spp. in water microcosms

被引:73
作者
Thomas, C
Hill, DJ
Mabey, M
机构
[1] Wolverhampton Univ, Dept Microbiol, Sch Appl Sci, Wolverhampton, England
[2] Wolverhampton Univ, Corp Enterprise Ctr, Wolverhampton, England
关键词
D O I
10.1046/j.1365-2672.1999.00789.x
中图分类号
Q81 [生物工程学(生物技术)]; Q93 [微生物学];
学科分类号
071005 ; 0836 ; 090102 ; 100705 ;
摘要
Batch microcosms containing various water types (de-ionized and river water with or without sediment), incubated at a range of temperatures (5-37 degrees C), were used to facilitate a comparative evaluation of the significance of such variables and their interactions upon the collective and individual survival of four species of thermophilic Cn Campylobacter, All variables significantly influenced (P < = 0.031) population decay rates. Minimal decay for the group was identified at low temperatures (5 degrees C) in river water, i.e. nutrient-containing microcosms. Collective decay rates within river water microcosms were significantly decreased (P = 0.03) from those observed in de-ionized water, particularly at environmental temperatures (5 and 15 degrees C). However, the increased nutrient levels observed in sediment-containing microcosms did not significantly (P = 0.41) reduce population decay rates. Overall, Camp. jejuni populations demonstrated the most resilience to the environmental stressors evaluated, with the exception of 15 OC where Camp. lari was the most persistent. Campylobacter coli and Camp. upsaliensis demonstrated comparable survival characteristics but were less resilient than Camp. jejuni and Camp lari. These observations identify the suitability of water systems as a reservoir and medium for Campylobacter infection, and potentially identifies Camp. jejuni and Camp. lari as the main protagonists of water-mediated Campylobacteriosis.
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页码:1024 / 1032
页数:9
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