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Phylogenetic position analysis of an Isospora isolated from Siberian tiger in Eimeriid coccidian based on 18S rDNA sequence
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نویسنده
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zhijun h. ,mingwei x. ,hongliang c. ,yuping h.
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منبع
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pakistan journal of zoology - 2011 - دوره : 43 - شماره : 3 - صفحه:505 -510
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چکیده
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We previously found that the siberian tiger can be parasitized by isospora. the oocysts of isospora were found in 62.5% of siberian tigers (n=40) of different age groups in winter,but only 7.55% (n=53) in summer. by pcr,we obtained a 1768 bp sequence representing the 18s rdna gene of isospora of the siberian tiger. phylogenetic analysis suggested that isospora of the siberian tiger,along with four other members of mammalian isospora,formed a monophyletic group with neospora caninum and toxoplasma gondii. the eight sarcocystis spp. analyzed formed a monophyletic group that is the sister taxon to the isospora/toxoplasma/neospora caninum clade. the mean distance values between isospora of the siberian tiger and other mammalian isospora species,toxoplasma gondii,neospora caninum,and sarcocystis spp. were all smaller than the mean distance between isospora of the siberian tiger and eimeria spp. used in our analysis. this indicated that isospora of the siberian tiger,as well as other isospora species,should belong to the family sarcocystidae,rather than the family eimeriidae. copyright 2011 zoological society of pakistan.
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کلیدواژه
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18S rDNA; Family Eimeriidae; Family Sarcocystidae; Isospora; Phylogenetic analysis; Siberian tiger
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آدرس
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college of wildlife resources,northeast forestry university, China, college of wildlife resources,northeast forestry university, China, college of wildlife resources,northeast forestry university, China, college of wildlife resources,northeast forestry university, China
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Authors
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