2020
DOI: 10.1101/2020.11.29.402545
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Wolbachiaload variation inDrosophilais more likely caused by drift than by host genetic factors

Abstract: Symbiosis is a continuum of long-term interactions ranging from mutualism to parasitism, according to the balance between costs and benefits for the protagonists. The density of endosymbiont density is in both cases a key factor that determines both the transmission of symbiont and the host extended phenotype and is thus tightly regulated within hosts. However, the evolutionary and molecular mechanisms underlying bacterial density regulation are currently poorly understood. In this context, the symbiosis betwe… Show more

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Cited by 3 publications
(1 citation statement)
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“…Only the costs imposed by different isolates in 2019 correlated well with H. defensa titers assessed in 2018. We, thus, suspect that the temporal variation in costs might be related to changes in symbiont population sizes, potentially caused by fluctuations in H. defensa's virulence, changes in its interaction with the host's immune system, or simply drift, which also appears to induce temporal variation of Wolbachia load in captive lines of Drosophila melanogaster (Bénard et al, 2021). Another possible explanation for the temporal variation in costs is that laboratory aphid lines may get infected occasionally by other pathogens, which affect lifespan or reduce reproduction.…”
Section: Discussionmentioning
confidence: 99%
“…Only the costs imposed by different isolates in 2019 correlated well with H. defensa titers assessed in 2018. We, thus, suspect that the temporal variation in costs might be related to changes in symbiont population sizes, potentially caused by fluctuations in H. defensa's virulence, changes in its interaction with the host's immune system, or simply drift, which also appears to induce temporal variation of Wolbachia load in captive lines of Drosophila melanogaster (Bénard et al, 2021). Another possible explanation for the temporal variation in costs is that laboratory aphid lines may get infected occasionally by other pathogens, which affect lifespan or reduce reproduction.…”
Section: Discussionmentioning
confidence: 99%