The relationship of Hammondia hammondi and Sarcocystis mucosa to other heteroxenous cyst-forming coccidia as inferred by phylogenetic analysis of the 18S SSU ribosomal DNA sequence.

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Abstract

The complete sequence of the 18S small subunit (SSU) ribosomal DNA of Hammondia hammondi and Sarcocystis mucosa was obtained and compared to SSU rDNA sequences of Neospora caninum, Toxoplasma gondii, Besnoitia besnoiti, 2 species of Frenkelia, 3 species of Isospora, and 13 species of Sarcocystis. Analyses showed that H. hammondi and T. gondii are monophyletic and that these taxa shared a common ancestor with N. caninum and B. besnoiti. The weight of evidence shows that S. mucosa, S. neurona, and Frenkelia species form a clade thereby supporting the conclusion that Sarcocystis is paraphyletic.

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Journal

Journal ID (iso-abbrev): Parasitology

Title: Parasitology

ISSN: 0031-1820

ISSN (Print): 0031-1820

Publication date (Electronic): Aug 1999

Volume: 119 ( Pt 2)

Affiliations

[1 ] Parasite Biology and Epidemiology Laboratory, USDA, BARC-EAST, Beltsville, MD 20705, USA. mjenkins@lpsi.barc.usda.gov

Article

DOI: 10.1017/s0031182099004618

PubMed ID: 10466120

SO-VID: 24e69197-8d14-493b-8d13-5df48fbc322e

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