Drosophila melanogaster infected with Wolbachia strain wMelCS prefer cooler temperatures

Pieter A. Arnold*, Samantha C. Levin, Aleksej L. Stevanovic, Karyn N. Johnson

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    26 Citations (Scopus)

    Abstract

    1. Temperature plays a fundamental role in the dynamics of host–pathogen interactions. Wolbachia is an endosymbiotic bacteria that infects about 40% of arthropod species, which can affect host behaviour and reproduction. Yet, the effect of Wolbachia on host thermoregulatory behaviour is largely unknown, despite its use in disease vector control programs in thermally variable environments. 2. Here, a thermal gradient was used to test whether Drosophila melanogaster infected with Wolbachia strain wMelCS exhibited different temperature preferences (T p ) to uninfected flies. 3. It was found that Wolbachia-infected flies preferred a cooler mean temperature (T p = 25.06 ± 0.25 °C) than uninfected flies (T p = 25.78 ± 0.24 °C). 4. This finding suggests that Wolbachia-infected hosts might seek out cooler microclimates to reduce exposure to, and lessen the consequences of, high temperatures. This finding has generated hypotheses that will be fruitful in areas of research for exploring the mechanisms by which the change in T p occurs in this complex and significant host–pathogen–environment interaction.

    Original languageEnglish
    Pages (from-to)287-290
    Number of pages4
    JournalEcological Entomology
    Volume44
    Issue number2
    DOIs
    Publication statusPublished - Apr 2019

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