Physiological responses of insects to microbial fermentation products: Insights from the interactions between Drosophila and acetic acid

Journal of Insect Physiology
Geonho KimAngela E Douglas

Abstract

Acetic acid is a fermentation product of many microorganisms, including some that inhabit the food and guts of Drosophila. Here, we investigated the effect of dietary acetic acid on oviposition and larval performance of Drosophila. At all concentrations tested (0.34-3.4%), acetic acid promoted egg deposition by mated females in no-choice assays; and females preferred to oviposit on diet with acetic acid relative to acetic acid-free diet. However, acetic acid depressed larval performance, particularly extending the development time of both larvae colonized with the bacterium Acetobacter pomorum and axenic (microbe-free) larvae. The larvae may incur an energetic cost associated with dissipating the high acid load on acetic acid-supplemented diets. This effect was compounded by suppressed population growth of A. pomorum on the 3.4% acetic acid diet, such that the gnotobiotic Drosophila on this diet displayed traits characteristic of axenic Drosophila, specifically reduced developmental rate and elevated lipid content. It is concluded that acetic acid is deleterious to larval Drosophila, and hypothesized that acetic acid may function as a reliable cue for females to oviposit in substrates bearing microbial communities that promote ...Continue Reading

References

Apr 10, 2014·Comprehensive Physiology·Erik Hviid LarsenDirk Weihrauch

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Citations

Mar 10, 2018·Environmental Microbiology·Nana Y D Ankrah, Angela E Douglas
Nov 6, 2018·Applied and Environmental Microbiology·Andrew J Sommer, Peter D Newell
Dec 22, 2019·Molecular Ecology·Amber W WaltersJohn M Chaston
Oct 15, 2020·The Journal of Experimental Biology·John G McMullenAngela E Douglas
May 6, 2021·MSystems·Nana Y D AnkrahAngela E Douglas
Jul 30, 2021·Development·Scott A KeithBrooke M McCartney

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