Morphological and genetic characterisation of Cryptosporidium oocysts from domestic cats

K. Sargent; U.M. Morgan; A. Elliot; R.C.A. Thompson

doi:10.1016/S0304-4017(98)00122-8

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Morphological and genetic characterisation of Cryptosporidium oocysts from domestic cats

Journal article

Peer reviewed

Morphological and genetic characterisation of Cryptosporidium oocysts from domestic cats

K. Sargent, U.M. Morgan, A. Elliot and R.C.A. Thompson

Veterinary Parasitology, Vol.77(4), pp.221-227

30/06/1998

DOI: https://doi.org/10.1016/S0304-4017(98)00122-8

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Abstract

Faecal samples were collected from domestic cats in the metropolitan area of the city of Perth, Western Australia, and screened for the presence of Cryptosporidium by both microscopy and PCR. Of 162 samples screened, two were positive for Cryptosporidium (a prevalence of 1.2%). Sample Ct33 was from an 18-month-old female and sample Ct131 from a 12-month-old female. Morphological studies revealed oocysts with an average size of 4.6x4.0 μm, smaller in size than isolates typically seen in humans (5.0x4.5 μm). Sequence analysis of PCR products showed sequences from cat isolates to be different to previously sequenced human and calf isolates, with cat isolates exhibiting 8.1% sequence divergence from these isolates. Phylogenetic analysis grouped the cat isolates into a distinct group, separate from other C. parvum isolates and Cryptosporidium species. These results lend support to the existence of a cat-adapted Cryptosporidium strain or species.

Details

Title: Morphological and genetic characterisation of Cryptosporidium oocysts from domestic cats
Authors/Creators: K. Sargent (Author/Creator)
U.M. Morgan (Author/Creator)
A. Elliot (Author/Creator)
R.C.A. Thompson (Author/Creator)
Publication Details: Veterinary Parasitology, Vol.77(4), pp.221-227
Publisher: Elsevier BV
Identifiers: 991005543623207891
Copyright: © 1998 Elsevier Science B.V.
Murdoch Affiliation: State Agricultural Biotechnology Centre; School of Veterinary and Biomedical Sciences
Language: English
Resource Type: Journal article

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Citation topics: 1 Clinical & Life Sciences; 1.246 Diarrheal Diseases; 1.246.985 Cryptosporidium
Web Of Science research areas: Parasitology; Veterinary Sciences
ESI research areas: Plant & Animal Science