Cryptosporidium from a free-ranging marsupial host: Bandicoots in urban Australia

Matthew Dowle, Nichola J. Hill, Michelle L. Power

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Expansion of human settlement has increased the interface between people and bandicoots with implications for the emergence and spread of zoonotic parasites. The host status of bandicoots inhabiting suburban areas and their potential role in Cryptosporidium transmission remains unresolved. Our study aimed to determine the prevalence and identity of Cryptosporidium in two sympatric bandicoot species. Cryptosporidium signatures were detected in twelve bandicoot faecal samples (n= 98) through amplification of the 18S rRNA. Phylogenetic inference placed the isolates in a clade with Cryptosporidium parvum, a species with a broad host range and zoonotic potential, or loosely related to Cryptosporidium hominis. However, the identity of the bandicoot isolates was not fully resolved and whether they were infected or simply passively transmitting oocysts is unknown. This study revealed that free-ranging bandicoots of northern Sydney were shedding Cryptosporidium oocysts at a prevalence of 12.2% (95% CI [6.76, 20.8]), similar to marsupial species that act as reservoirs for Cryptosporidium. Our findings expand the range of hosts known to shed Cryptosporidium in urban areas.

LanguageEnglish
Pages197-200
Number of pages4
JournalVeterinary Parasitology
Volume198
Issue number1-2
DOIs
Publication statusPublished - 15 Nov 2013

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Marsupialia
Cryptosporidium
Metatheria
Oocysts
oocysts
Host Specificity
host range
Zoonoses
Cryptosporidium hominis
suburban areas
human settlements
Cryptosporidium parvum
Sympatry
urban areas
ribosomal RNA
Parasites
parasites
phylogeny

Cite this

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abstract = "Expansion of human settlement has increased the interface between people and bandicoots with implications for the emergence and spread of zoonotic parasites. The host status of bandicoots inhabiting suburban areas and their potential role in Cryptosporidium transmission remains unresolved. Our study aimed to determine the prevalence and identity of Cryptosporidium in two sympatric bandicoot species. Cryptosporidium signatures were detected in twelve bandicoot faecal samples (n= 98) through amplification of the 18S rRNA. Phylogenetic inference placed the isolates in a clade with Cryptosporidium parvum, a species with a broad host range and zoonotic potential, or loosely related to Cryptosporidium hominis. However, the identity of the bandicoot isolates was not fully resolved and whether they were infected or simply passively transmitting oocysts is unknown. This study revealed that free-ranging bandicoots of northern Sydney were shedding Cryptosporidium oocysts at a prevalence of 12.2{\%} (95{\%} CI [6.76, 20.8]), similar to marsupial species that act as reservoirs for Cryptosporidium. Our findings expand the range of hosts known to shed Cryptosporidium in urban areas.",
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Cryptosporidium from a free-ranging marsupial host : Bandicoots in urban Australia. / Dowle, Matthew; Hill, Nichola J.; Power, Michelle L.

In: Veterinary Parasitology, Vol. 198, No. 1-2, 15.11.2013, p. 197-200.

Research output: Contribution to journalArticleResearchpeer-review

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