A new species of Cryptosporidium (Apicomplexa:Cryptosporidiidae) from eastern grey Kangaroos (Macropus giganteus)

Michelle L. Power, Una M. Ryan

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Cryptosporidium macropodum n. sp is described. Oocysts of C. macropodum from the feces of kangaroos (Macropus spp.) are morphologically indistinguishable from other mammalian Cryptosporidium species, including C. parvum, C. hominis, C. suis, and C. canis. The oocysts are fully sporulated on excretion, lack sporocysts, and have an average width of 4.9 μm (4.5-6.0), a length of 5.4 μm (5.0-6.0), and a length:width ratio of 1.1. Phylogenetic analyses of the 18S ribosomal RNA, actin, and heat shock protein 70 (HSP70) loci demonstrate that C. macropodum is genetically distinct from all described Cryptosporidium species, including others found in marsupials. The parasite seems to be highly host-specific, because it has been found only in marsupials to date. Therefore, based on biological and molecular data, we consider C. macropodum a new species.

LanguageEnglish
Pages1114-1117
Number of pages4
JournalJournal of Parasitology
Volume94
Issue number5
DOIs
Publication statusPublished - Oct 2008

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Cryptosporidiidae
Macropus giganteus
Apicomplexa
Macropodidae
Cryptosporidium
Oocysts
marsupial
Marsupialia
Metatheria
new species
oocysts
heat shock
Cryptosporidium hominis
18S Ribosomal RNA
Macropus
excretion
feces
RNA
parasite
sporocysts (Protozoa)

Cite this

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title = "A new species of Cryptosporidium (Apicomplexa:Cryptosporidiidae) from eastern grey Kangaroos (Macropus giganteus)",
abstract = "Cryptosporidium macropodum n. sp is described. Oocysts of C. macropodum from the feces of kangaroos (Macropus spp.) are morphologically indistinguishable from other mammalian Cryptosporidium species, including C. parvum, C. hominis, C. suis, and C. canis. The oocysts are fully sporulated on excretion, lack sporocysts, and have an average width of 4.9 μm (4.5-6.0), a length of 5.4 μm (5.0-6.0), and a length:width ratio of 1.1. Phylogenetic analyses of the 18S ribosomal RNA, actin, and heat shock protein 70 (HSP70) loci demonstrate that C. macropodum is genetically distinct from all described Cryptosporidium species, including others found in marsupials. The parasite seems to be highly host-specific, because it has been found only in marsupials to date. Therefore, based on biological and molecular data, we consider C. macropodum a new species.",
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A new species of Cryptosporidium (Apicomplexa:Cryptosporidiidae) from eastern grey Kangaroos (Macropus giganteus). / Power, Michelle L.; Ryan, Una M.

In: Journal of Parasitology, Vol. 94, No. 5, 10.2008, p. 1114-1117.

Research output: Contribution to journalArticleResearchpeer-review

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AB - Cryptosporidium macropodum n. sp is described. Oocysts of C. macropodum from the feces of kangaroos (Macropus spp.) are morphologically indistinguishable from other mammalian Cryptosporidium species, including C. parvum, C. hominis, C. suis, and C. canis. The oocysts are fully sporulated on excretion, lack sporocysts, and have an average width of 4.9 μm (4.5-6.0), a length of 5.4 μm (5.0-6.0), and a length:width ratio of 1.1. Phylogenetic analyses of the 18S ribosomal RNA, actin, and heat shock protein 70 (HSP70) loci demonstrate that C. macropodum is genetically distinct from all described Cryptosporidium species, including others found in marsupials. The parasite seems to be highly host-specific, because it has been found only in marsupials to date. Therefore, based on biological and molecular data, we consider C. macropodum a new species.

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