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Wolbachia both aids and hampers the performance of spider mites on different host plants

View ORCID ProfileFlore Zélé, Joaquim L. Santos, Diogo Prino Godinho, Sara Magalhães
doi: https://doi.org/10.1101/344143
Flore Zélé
1cE3c: centre for Ecology, Evolution and Environmental changes; Faculdade de Ciencias; Universidade de Lisboa, Edificio C2, Piso-3, Campo Grande, 1749-016 Lisbon, Portugal
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  • For correspondence: fezele@fc.ul.pt
Joaquim L. Santos
1cE3c: centre for Ecology, Evolution and Environmental changes; Faculdade de Ciencias; Universidade de Lisboa, Edificio C2, Piso-3, Campo Grande, 1749-016 Lisbon, Portugal
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Diogo Prino Godinho
1cE3c: centre for Ecology, Evolution and Environmental changes; Faculdade de Ciencias; Universidade de Lisboa, Edificio C2, Piso-3, Campo Grande, 1749-016 Lisbon, Portugal
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Sara Magalhães
1cE3c: centre for Ecology, Evolution and Environmental changes; Faculdade de Ciencias; Universidade de Lisboa, Edificio C2, Piso-3, Campo Grande, 1749-016 Lisbon, Portugal
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Abstract

In the last decades, many studies had revealed the potential role of arthropod bacterial endosymbionts in shaping the host range of generalist herbivores and their performance on different host plants, which, in turn, might affect endosymbiont distribution in herbivores populations. We tested this by measuring the prevalence of endosymbionts in natural populations of the generalist spider mite Tetranychus urticae on different host plants. Focusing on Wolbachia, we then analysed how symbionts affected mite life-history traits on the same host-plants in the laboratory. Overall, the prevalences of Cardinium and Rickettsia were low, whereas that of Wolbachia was high, with the highest values on bean and eggplant and the lowest on purple, tomato and zuchini. Although most mite life-history traits were affected by the plant species only, Wolbachia infection was detrimental for egg hatching rate on purple and zucchini, and led to a more female-biased sex ratio on purple and eggplant. These results suggest that endosymbionts may affect the host range of polyphagous herbivores, both by aiding and hampering their performance, depending on the host plant and on the life-history trait that affects performance the most. Conversely, endosymbiont spread may be facilitated or hindered by the plants on which infected herbivores occur.

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Posted June 11, 2018.
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Wolbachia both aids and hampers the performance of spider mites on different host plants
Flore Zélé, Joaquim L. Santos, Diogo Prino Godinho, Sara Magalhães
bioRxiv 344143; doi: https://doi.org/10.1101/344143
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Wolbachia both aids and hampers the performance of spider mites on different host plants
Flore Zélé, Joaquim L. Santos, Diogo Prino Godinho, Sara Magalhães
bioRxiv 344143; doi: https://doi.org/10.1101/344143

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