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1 January 2010 Phylogenetic Placement and Evidence for Horizontal Transfer of Wolbachia in Plutella xylostella (Lepidoptera: Plutellidae) and Its Parasitoid, Diadegma insulare (Hymenoptera: lchneumonidae)
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Abstract

The diamondback moth, Plutella xylostella (L.), is a global pest of cruciferous crops (Brassicaceae). It has developed resistance to virtually all known insecticides, and biological control has become an important management tool. In North America the parasitoid Diadegma insulare (Cresson) has been used successfully to reduce diamondback moth populations. We document the presence of the α-proteobacterial endosymbiont Wolbachia and its associated bacteriophage WO in P. xylostella and D. insulare and examine the phylogenetic relationships of Wolbachia and WO in both host species. Our results suggest that Wolbachia and WO have been horizontally transferred in this insect—parasitoid system in recent evolutionary history. Knowledge of the dynamics of Wolbachia in P. xylostella and D. insulare may be an important factor in future control of this pest in the field.

© 2010 Entomological Society of Canada
Philip D. Batista, B. Andrew Keddie, Lloyd M. Dosdall, and Harriet L. Harris "Phylogenetic Placement and Evidence for Horizontal Transfer of Wolbachia in Plutella xylostella (Lepidoptera: Plutellidae) and Its Parasitoid, Diadegma insulare (Hymenoptera: lchneumonidae)," The Canadian Entomologist 142(1), 57-64, (1 January 2010). https://doi.org/10.4039/n09-050
Received: 20 May 2009; Accepted: 1 August 2009; Published: 1 January 2010
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