+ Translate
+ Most Popular
Investigations on the organic drift in North Swedish streams
Limitations of Using Microsoft Excel Version 2016 (MS Excel 2016) for Statistical Analysis for Medical Research
Phloem necrosis of coffee in Surinam
Anatomy of Mystus seenghala IV Nervous system
Integrated farming system for gardenland conditions of Coimbatore district - an over view
Tetrapleure (Tetrapleura tetraptera), an unknown African medicinal and spice plant
The origin and phylogenetic significance of the trochophoran larvae 2. evolutionary significance of the larvae of coelomate worms and mollusks
Comparison of rice bran and maize bran as feeds for growing and fattening pigs
Enterobacter amnigenus. An unusual human pathogen
Influence of Seriboost foliar application on leaf yield and leaf protein content in mulberry (Morus spp.), in relation to silkworm cocoon production
The identity of the lipstick mold of cultivated mushrooms agaricus bisporus
Advantages and disadvantages of bordeaux mixture and of lime-sulphur used on apples in the growing season
'Pan-sukh' disease of Rice in the Central Provinces
Geological age of the Ptilophyllum flora; a critical reassessment
Study of vitellogenesis in birds; physiological phases & role of folliculin in vitellogenesis
Evaluation of WCT coconut and Komadan coconut
Therapy for acne with saccharomyces boulardii
Evidence for Late Cretaceous N-S dextral shear in the west-central crystalline core, North Cascades, Washington
'Rajeshwari' - a high-yielding white seeded variety of sesame for Andhra Pradesh
Manufacture of Ricotta cheese from whey fortified with skim milk powder using different acidulants
Occurrence of Eutrichophilus mexicanus (Rudow, 1866) and Eutrichophilus lobatus (Ewing, 1936) (Phthiraptera: Trichodectidae) on Sphiggurus villosus (Cuvier, 1825) (Rodentia: Erethizontidae) in Rio de
Factors affecting fruitfulness in durian (Durio zibethinus Murr.). I. Flowering and pollination
Bronchial cuff pressure change caused by left-sided double-lumen endobronchial tube displacement
Some Biological Applications of Organometallic Compounds
The composition of pampas-grass (Cortaderia argentea.)

Cryptosporidium parvum oocyst inactivation in three soil types at various temperatures and water potentials

Cryptosporidium parvum oocyst inactivation in three soil types at various temperatures and water potentials

Soil biology and biochemistry 34(8): 1101-1109

ISSN/ISBN: 0038-0717

DOI: 10.1016/s0038-0717(02)00046-9

The interaction between soil types, temperature, and soil water potential may have differential effects on the survival of Cryptosporidium parvum oocysts in the terrestrial environment. We examined the effects of three soil types (a silty clay loam, silt loam, and loamy sand), three temperatures (4, 20, and 30 degrees C), and three soil water potentials (-0.033, -0.5 and -1.5 MPa) on the inactivation kinetics of oocysts. Sentinel chambers were filled with air-dried and sieved soil, brought to the appropriate soil water potential, and inoculated with 2 x 10(6) freshly purified oocysts. The inoculated chambers were buried in the same bulk soil at the appropriate water potentials and incubated at one of the three temperatures. Triplicate chambers were removed from the bulk soil on days 0, 22, 43, 84 and 156. Sentinel oocysts were extracted, and assayed for potential infectivity by the dye permeability method. Oocysts suspended in sterile distilled water and incubated with the sentinel chambers were used as controls for the effect of temperature. The soil water potentials investigated did not affect oocyst inactivation at any temperature or with any of the three soil types. Rates of oocyst inactivation increased significantly between 4 and 20 degrees C, but not between 20 and 30 degrees C with the exception of oocysts incubated in the silty clay loam. Oocyst survival appeared to be significantly greater in the silt loam soil than in the two other soil types when incubated at 20 degrees C; and at 30 degrees C oocyst survival was significantly less in the silt clay loam than in the other two soil types. Rates of sentinel oocyst inactivation at all three soil water potentials were significantly lower than the control oocysts in water at the three test temperatures. Thus oocyst survival in soil was not affected by the water potentials between -0.033 and -1.5 MPa; it was affected by soil texture; but temperature appeared to be the factor most affecting oocyst survival. In the critical ambient range of temperature in temperate climates oocysts may survive for months in agricultural soil, and pose a threat to surface waters.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 003697773

Download citation: RISBibTeXText

Related references

Determination of inactivation rates of Cryptosporidium parvum oocysts in sand, silt, and clay soils at various temperatures and water potentials. American Journal of Tropical Medicine and Hygiene 61(3 Suppl. ): 180, 1999

Cryptosporidium parvum oocyst inactivation in field soil and its relation to soil characteristics: analyses using the geographic information systems. Science of the Total Environment 321(1-3): 47-58, 2004

Use of sentinel Cryptosporidium parvum oocysts for field measurements of oocyst inactivation kinetics in surface soil. Abstracts of the General Meeting of the American Society for Microbiology 98: 459, 1998

Use of a sentinel system for field measurements of Cryptosporidium parvum oocyst inactivation in soil and animal waste. Applied and Environmental Microbiology 65(5): 1998-2005, 1999

Modeling Cryptosporidium parvum oocyst inactivation and bromate in a flow-through ozone contactor treating natural water. Water Research 41(2): 467-475, 2007

Inactivation of Cryptosporidium parvum oocyst infectivity by disinfection and sterilization processes. Gastrointestinal Endoscopy 49(5): 605-611, 1999

Simultaneous prediction of Cryptosporidium parvum oocyst inactivation and bromate formation during ozonation of synthetic waters. Environmental Science and Technology 38(7): 2232-2241, 2004

Effect of turbulent gas-liquid contact in a static mixer on Cryptosporidium parvum oocyst inactivation by ozone. Water Research 37(15): 3622-3631, 2003

Modeling Cryptosporidium parvum oocyst inactivation and bromate formation in a full-scale ozone contactor. Environmental Science and Technology 39(23): 9343-9350, 2005

A novel multiplex polymerase chain reaction approach for detection of four human infective Cryptosporidium isolates: Cryptosporidium parvum, types H and C, Cryptosporidium canis, and Cryptosporidium felis in fecal and soil samples. Journal of Veterinary Diagnostic Investigation: Official Publication of the American Association of Veterinary Laboratory Diagnosticians Inc 15(3): 262-267, 2003

Medium-pressure UV for oocyst inactivation: In vivo studies indicate the infectivity of treated Cryptosporidium parvum oocysts more reliably than do in vitro assays. American Water Works Association Journal 91(3): 86-94, 1999

Effect of bovine manure on Cryptosporidium parvum oocyst attachment to soil. Applied and Environmental Microbiology 71(10): 6394-6397, 2005

The potential for Cryptosporidium parvum oocyst survival in beverages associated with contaminated tap water. Journal of food safety 17(2): 125-132, 1997

Detection of a Single Viable Cryptosporidium parvum Oocyst in Environmental Water Concentrates by Reverse Transcription-PCR. Applied and Environmental Microbiology 63(2): 815, 1997

Detection of a single viable Cryptosporidium parvum oocyst in environmental water concentrates by reverse transcription-PCR. Applied and Environmental Microbiology 62(9): 3385-3390, 1996