Does the seasonal phenotype of Drosophila suzukii influence cellular immunity and parasitisation?

Controlling the worldwide invasive pest Drosophila suzukii remains a challenge. One promising biological method for managing this pest is the use of larval and pupal parasitoids. Unfortunately, most of the larval parasitoids fail to successfully parasitise D. suzukii larvae in laboratory experiments...

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Bibliographic Details
Published in:Journal of applied entomology (1986) 2024-06, Vol.148 (5), p.582-595
Main Authors: Häussling, Benedikt J. M., Rausch, Nathalie, Klüsener, Emely K., Stökl, Johannes
Format: Article
Language:English
Subjects:
Agricultural practices
biological pest control
Cell-mediated immunity
Drosophila suzukii
Fruit flies
Genotype & phenotype
haemocytes
immunity
Insects
Integrated pest management
Larvae
Northern Hemisphere
Parasitoids
Pest control
Pests
phenoloxidase
Phenotypes
spotted wing drosophila
Summer
Winter
winter morph
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Summary:Controlling the worldwide invasive pest Drosophila suzukii remains a challenge. One promising biological method for managing this pest is the use of larval and pupal parasitoids. Unfortunately, most of the larval parasitoids fail to successfully parasitise D. suzukii larvae in laboratory experiments due to the high immunity of the pest. So far, only the summer phenotype (summer morph) of D. suzukii has been tested for parasitisation. However, the winter phenotype (winter morph) is the dominant form of D. suzukii throughout the year in the northern hemisphere. Therefore, this study investigates the immunity during parasitisation for both phenotypes using the larval parasitoid Asobara japonica and the pupal parasitoid Trichopria drosophilae. It is the first to compare across all life stages the immunity of the winter phenotype to the summer phenotype of not only D. suzukii but also D. melanogaster. Our results indicate differences in the immunity between the two phenotypes for larvae, pupae, and adults. However, the degree and direction of these differences were inconsistent across the different life stages of D. suzukii. The findings have important implications for the integrated pest management (IPM) of D. suzukii.
ISSN:0931-2048
1439-0418
DOI:10.1111/jen.13251