Wolbachia infection dynamics in a natural population of the pear psyllid Cacopsylla pyri (Hemiptera : Psylloidea) across its seasonal generations Article - Décembre 2022

Liliya Štarhová Serbina, Domagoj Gajski, Igor Malenovský, Erika Corretto, Hannes Schuler, Jessica Dittmer

Liliya Štarhová Serbina, Domagoj Gajski, Igor Malenovský, Erika Corretto, Hannes Schuler, Jessica Dittmer, « Wolbachia infection dynamics in a natural population of the pear psyllid Cacopsylla pyri (Hemiptera : Psylloidea) across its seasonal generations  », Scientific Reports, décembre 2022, p. 16502. ISSN 2045-2322

Abstract

Abstract Wolbachia is one of the most abundant intracellular symbionts of arthropods and has profound effects on host biology. Wolbachia transmission and host phenotypes often depend on its density within the host, which can be affected by multiple biotic and abiotic factors. However, very few studies measured Wolbachia density in natural host populations. Here, we describe Wolbachia in the pear psyllid Cacopsylla pyri from three populations in the Czech Republic. Using phylogenetic analyses based on wsp and multilocus sequence typing genes, we demonstrate that C. pyri harbours three new Wolbachia strains from supergroup B. A fourth Wolbachia strain from supergroup A was also detected in parasitised immatures of C. pyri , but likely came from a hymenopteran parasitoid. To obtain insights into natural Wolbachia infection dynamics, we quantified Wolbachia in psyllid individuals from the locality with the highest prevalence across an entire year, spanning several seasonal generations of the host. All tested females were infected and Wolbachia density remained stable across the entire period, suggesting a highly efficient vertical transmission and little influence from the environment and different host generations. In contrast, we observed a tendency towards reduced Wolbachia density in males which may suggest sex-related differences in Wolbachia -psyllid interactions.

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