Literature DB >> 11375204

Quantitative shedding of two genotypes of Cryptosporidium parvum in California ground squirrels (Spermophilus beecheyi).

E R Atwill1, S M Camargo, R Phillips, L H Alonso, K W Tate, W A Jensen, J Bennet, S Little, T P Salmon.   

Abstract

Sixteen percent of California ground squirrels (Spermophilus beecheyi) were found to be shedding an average of 53,875 Cryptosporidium parvum oocysts/g of feces. Male squirrels had a higher prevalence and higher intensity of shedding than did female squirrels. The majority of C. parvum isolates matched a bovine-murine genotype, with a few isolates resembling a porcine genotype. Higher intensities of shedding by males may enhance dissemination and genotypic mixing of this protozoa given males' proclivity to disperse to nonnatal colonies.

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Year:  2001        PMID： 11375204      PMCID： PMC92948          DOI： 10.1128/AEM.67.6.2840-2843.2001

Source DB:  PubMed          Journal:  Appl Environ Microbiol        ISSN： 0099-2240            Impact factor:   4.792


  17 in total

1.  Sequence differences in the diagnostic target region of the oocyst wall protein gene of Cryptosporidium parasites.

Authors:  L Xiao; J Limor; U M Morgan; I M Sulaiman; R C Thompson; A A Lal
Journal:  Appl Environ Microbiol       Date:  2000-12       Impact factor: 4.792

2.  Improved stool concentration procedure for detection of Cryptosporidium oocysts in fecal specimens.

Authors:  R Weber; R T Bryan; D D Juranek
Journal:  J Clin Microbiol       Date:  1992-11       Impact factor: 5.948

3.  The prevalence of Cryptosporidium parvum and C. muris in Mus domesticus, Apodemus sylvaticus and Clethrionomys glareolus in an agricultural system.

Authors:  R M Chalmers; A P Sturdee; S A Bull; A Miller; S E Wright
Journal:  Parasitol Res       Date:  1997       Impact factor: 2.289

4.  Polymorphisms in the beta-tubulin gene of Cryptosporidium parvum differentiate between isolates based on animal host but not geographic origin.

Authors:  P A Rochelle; E M Jutras; E R Atwill; R De Leon; M H Stewart
Journal:  J Parasitol       Date:  1999-10       Impact factor: 1.276

5.  Coccidian assemblages in the Wyoming ground squirrel, Spermophilus elegans elegans.

Authors:  N L Stanton; L M Shults; M Parker; R S Seville
Journal:  J Parasitol       Date:  1992-04       Impact factor: 1.276

6.  Genotyping human and bovine isolates of Cryptosporidium parvum by polymerase chain reaction-restriction fragment length polymorphism analysis of a repetitive DNA sequence.

Authors:  A Bonnin; M N Fourmaux; J F Dubremetz; R G Nelson; P Gobet; G Harly; M Buisson; D Puygauthier-Toubas; G Gabriel-Pospisil; M Naciri; P Camerlynck
Journal:  FEMS Microbiol Lett       Date:  1996-04-01       Impact factor: 2.742

7.  Cryptosporidiosis reservoir in wild brown rats (Rattus norvegicus) in the UK.

Authors:  J P Webster; D W Macdonald
Journal:  Epidemiol Infect       Date:  1995-08       Impact factor: 2.451

8.  Molecular characterization of Cryptosporidium from various hosts.

Authors:  U M Morgan; K D Sargent; P Deplazes; D A Forbes; F Spano; H Hertzberg; A Elliot; R C Thompson
Journal:  Parasitology       Date:  1998-07       Impact factor: 3.234

9.  Identification of genetic heterogeneity in the Cryptosporidium parvum ribosomal repeat.

Authors:  M Carraway; S Tzipori; G Widmer
Journal:  Appl Environ Microbiol       Date:  1996-02       Impact factor: 4.792

Review 10.  Genetic polymorphism among Cryptosporidium parvum isolates: evidence of two distinct human transmission cycles.

Authors:  M M Peng; L Xiao; A R Freeman; M J Arrowood; A A Escalante; A C Weltman; C S Ong; W R Mac Kenzie; A A Lal; C B Beard
Journal:  Emerg Infect Dis       Date:  1997 Oct-Dec       Impact factor: 6.883
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  13 in total

1.  Concentrations of pathogens and indicators in animal feces in the Sydney watershed.

Authors:  Peter Cox; Merran Griffith; Mark Angles; Daniel Deere; Christobel Ferguson
Journal:  Appl Environ Microbiol       Date:  2005-10       Impact factor: 4.792

2.  Multiple unique Cryptosporidium isolates from three species of ground squirrels (Spermophilus beecheyi, S. beldingi, and S. lateralis) in California.

Authors:  Maria das Graças Cabral Pereira; Xunde Li; Brenda McCowan; Ralph L Phillips; Edward R Atwill
Journal:  Appl Environ Microbiol       Date:  2010-10-22       Impact factor: 4.792

3.  Patterns of Cryptosporidium oocyst shedding by eastern grey kangaroos inhabiting an Australian watershed.

Authors:  Michelle L Power; Nicholas C Sangster; Martin B Slade; Duncan A Veal
Journal:  Appl Environ Microbiol       Date:  2005-10       Impact factor: 4.792

4.  Transport of Cryptosporidium parvum oocysts through vegetated buffer strips and estimated filtration efficiency.

Authors:  Edward R Atwill; Lingling Hou; Betsy M Karle; Thomas Harter; Kenneth W Tate; Randy A Dahlgren
Journal:  Appl Environ Microbiol       Date:  2002-11       Impact factor: 4.792

5.  Seasonal shedding of multiple Cryptosporidium genotypes in California ground squirrels (Spermophilus beecheyi).

Authors:  Edward R Atwill; Ralph Phillips; Maria Das Graças C Pereira; Xunde Li; Brenda McCowan
Journal:  Appl Environ Microbiol       Date:  2004-11       Impact factor: 4.792

6.  Association of Cryptosporidium parvum with suspended particles: impact on oocyst sedimentation.

Authors:  Kristin E Searcy; Aaron I Packman; Edward R Atwill; Thomas Harter
Journal:  Appl Environ Microbiol       Date:  2005-02       Impact factor: 4.792

7.  Fecal shedding of zoonotic food-borne pathogens by wild rodents in a major agricultural region of the central California coast.

Authors:  Christopher Kilonzo; Xunde Li; Eduardo J Vivas; Michele T Jay-Russell; Kristine L Fernandez; Edward R Atwill
Journal:  Appl Environ Microbiol       Date:  2013-08-09       Impact factor: 4.792

8.  Prevalence and genetic characterization of Cryptosporidium isolates from common brushtail possums (Trichosurus vulpecula) adapted to urban settings.

Authors:  Nichola J Hill; Elizabeth M Deane; Michelle L Power
Journal:  Appl Environ Microbiol       Date:  2008-07-18       Impact factor: 4.792

9.  Improved quantitative estimates of low environmental loading and sporadic periparturient shedding of Cryptosporidium parvum in adult beef cattle.

Authors:  E R Atwill; B Hoar; M das Graças Cabral Pereira; K W Tate; F Rulofson; G Nader
Journal:  Appl Environ Microbiol       Date:  2003-08       Impact factor: 4.792

10.  Cryptosporidium rubeyi n. sp. (Apicomplexa: Cryptosporidiidae) in multiple Spermophilus ground squirrel species.

Authors:  Xunde Li; Maria das Graças Cabral Pereira; Royce Larsen; Chengling Xiao; Ralph Phillips; Karl Striby; Brenda McCowan; Edward R Atwill
Journal:  Int J Parasitol Parasites Wildl       Date:  2015-08-24       Impact factor: 2.674
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