How a Mite Affects Plant Defense and Competes with Other Mites
Author Information
Author(s): Sarmento Renato A., Lemos Felipe, Dias Cleide R., Kikuchi Wagner T., Rodrigues Jean C. P., Pallini Angelo, Sabelis Maurice W., Janssen Arne
Primary Institution: Federal University of Tocantins (UFT), Federal University of Viçosa, University of Amsterdam
Hypothesis
Can Tetranychus urticae profit from the reduced direct defense of plants attacked by Tetranychus evansi, and how does T. evansi prevent its competitors from profiting?
Conclusion
Tetranychus evansi can prevent Tetranychus urticae from benefiting from down-regulated plant defenses by producing a web that hinders the competitor's access to the leaf surface.
Supporting Evidence
- Tetranychus evansi down-regulates plant defenses, increasing its own performance.
- Tetranychus urticae had a higher oviposition rate on previously attacked leaves by T. evansi.
- T. evansi produced more web when exposed to cues from T. urticae.
Takeaway
One type of spider mite helps itself by making plants weaker against attacks, but it also makes a web to stop other spider mites from eating the same plants.
Methodology
The study involved rearing spider mites on tomato plants and measuring oviposition rates and web production under various conditions.
Potential Biases
Potential bias in the selection of mite populations and experimental conditions.
Limitations
The study was conducted in controlled greenhouse conditions, which may not fully represent natural environments.
Participant Demographics
The study focused on two species of spider mites, Tetranychus evansi and Tetranychus urticae.
Statistical Information
P-Value
p<0.0001
Statistical Significance
p<0.0001
Digital Object Identifier (DOI)
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