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Sand Fly Phlebotomus papatasi Embryo Microinjection for CRISPR/Cas9 Mutagenesis

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Genotype-specific interactions between parasitic arthropods.

M Orsucci¹, M Navajas¹, S Fellous¹

¹INRA, CBGP, UMR 1062, Montpellier, France.

|October 21, 2016

Summary

This summary is machine-generated.

Parasite coinfection effects vary based on specific parasite genotypes interacting within a host. This genotype-by-genotype interaction influences parasite multiplication, epidemiology, and evolution.

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Area of Science:

* Ecology and Evolutionary Biology
* Parasitology
* Genetics

Background:

* Coinfection by multiple parasite species is common in nature.
* The impact of intra-specific genetic variability on coinfection outcomes is poorly understood.
* Understanding these interactions is crucial for predicting parasite spread and evolution.

Purpose of the Study:

* To investigate the role of genetic interactions between coinfecting parasite species on their multiplication.
* To test the hypothesis of genotype-by-genotype interactions in parasite coinfection.
* To assess how varying parasite genetic combinations affect host-parasite dynamics.

Main Methods:

* Experimental coinfection of tomato leaves with two distinct mite species: *Tetranychus urticae* and *Tetranychus evansi*.
* Utilized multiple populations of each mite species, sampled from different hosts and localities.
* Tested all possible pairwise combinations of *T. urticae* and *T. evansi* genotypes to assess their impact on mite reproduction.

Main Results:

* No consistent, genotype-independent effect of coinfection was observed across all combinations.
* Specific combinations of *T. urticae* and *T. evansi* genotypes significantly altered mite multiplication rates.
* *T. evansi* populations showed increased numbers in certain coinfection scenarios, while *T. urticae* reproduction was highly dependent on the interacting *T. evansi* genotype.

Conclusions:

* Parasite multiplication during coinfection is strongly influenced by genotype-by-genotype interactions.
* The spatial variation in parasite population genetics can lead to differing coinfection effects.
* These findings suggest potential for coevolution between parasite species sharing hosts and highlight the importance of genetic diversity in parasite interactions.