Evolution of Wolbachia Infections in Filarial Nematodes
Author Information
Author(s): Ferri Emanuele, Bain Odile, Barbuto Michela, Martin Coralie, Lo Nathan, Uni Shigehiko, Landmann Frederic, Baccei Sara G., Guerrero Ricardo, de Souza Lima Sueli, Bandi Claudio, Wanji Samuel, Diagne Moustapha, Casiraghi Maurizio
Primary Institution: Dipartimento di Biotecnologie e Bioscienze, Università degli Studi di Milano Bicocca, Milano, Italy
Hypothesis
What is the distribution and role of Wolbachia in various species of filarial nematodes?
Conclusion
Wolbachia is absent in 63% of onchocercids, suggesting a complex evolutionary relationship with their hosts.
Supporting Evidence
- Wolbachia was found in 15 out of 35 species screened.
- 63% of onchocercids were found to be Wolbachia-negative.
- New tissue localizations of Wolbachia were observed in some filarial species.
- Recent lateral transfer of Wolbachia was suggested in supergroup F.
- Phylogenetic analysis showed inconsistencies between Wolbachia and their filarial hosts.
Takeaway
This study looked at different types of worms to see if they had a tiny bacteria called Wolbachia. They found that many worms didn't have it, which is surprising!
Methodology
The study used PCR, immunohistochemical staining, and whole mount fluorescent analysis to investigate Wolbachia distribution in 35 filarial species.
Potential Biases
Potential bias in species selection and sampling methods could affect the results.
Limitations
The study may not have screened all possible filarial species, and the absence of Wolbachia in some species could be due to low density or specific tissue localization.
Participant Demographics
The study included various filarial species from different geographic regions, including mammals, reptiles, and amphibians.
Statistical Information
P-Value
p<0.03
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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