The Filarial Endosymbiont Wolbachia sp. is Absent From Setaria equina

Wolbachia sp. was first reported in filarial nematodes over 25 yr ago. Today, much research is focused on the role of these bacteria in filarial worm biology. The filarial symbionts are closely related to arthropod symbionts, which are known to modify host reproduction and biology through various me...

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Bibliographic Details
Published in:The Journal of parasitology 2002-12, Vol.88 (6), p.1248-1250
Main Authors: Chirgwin, S. R, Porthouse, K. H, Nowling, J. M, Klei, T. R
Format: Article
Language:English
Subjects:
Animals
Arthropods
Bacteria
Biological and medical sciences
Biology
Cords
DNA, Bacterial - analysis
DNA, Ribosomal - analysis
Electron microscopy
Ethanol
Female
Females
Fundamental and applied biological sciences. Psychology
Horse Diseases - parasitology
Horses
Hybridization
Invertebrates
Life cycle. Embryology. Development
Male
Microscopy
Nemathelminthia. Plathelmintha
Nematodes
Parasite hosts
Parasites
Parasitology
Peritoneal Cavity - parasitology
Physiology. Development
Polymerase chain reaction
Polymerase Chain Reaction - veterinary
RESEARCH NOTES
Ribosomal DNA
RNA, Ribosomal, 16S - genetics
rRNA 16S
Setaria
Setaria Nematode - microbiology
Setaria Nematode - physiology
Setariasis - parasitology
Survival
Symbionts
Symbiosis
Veterinary medicine
Wolbachia
Wolbachia - genetics
Wolbachia - isolation & purification
Wolbachia - physiology
Worms
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Summary:Wolbachia sp. was first reported in filarial nematodes over 25 yr ago. Today, much research is focused on the role of these bacteria in filarial worm biology. The filarial symbionts are closely related to arthropod symbionts, which are known to modify host reproduction and biology through various mechanisms. Similarly, it has been suggested that Wolbachia sp. is essential for long-term survival and reproduction of filariae. We report that Wolbachia sp. 16S rDNA was not found in the equine filarial nematode Setaria equina, using either polymerase chain reaction (PCR) or DNA hybridization. In addition, ultrastructural analysis of adult worms did not reveal the presence of Wolbachia sp. in hypodermal cords or reproductive tissues. These data suggest that like Onchocerca flexuosa and Acanthocheilonema vitae, S. equina may not be dependent on Wolbachia sp. for survival.
ISSN:0022-3395
1937-2345
DOI:10.1645/0022-3395(2002)088[1248:TFEWSI]2.0.CO;2