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A simple high throughput assay to evaluate water consumption in the fruit fly.

ABSTRACT: Water intake is essential for survival and thus under strong regulation. Here, we describe a simple high throughput system to monitor water intake over time in Drosophila. The design of the assay involves dehydrating fly food and then adding water back separately so flies either eat or drink. Water consumption is then evaluated by weighing the water vessel and comparing this back to an evaporation control. Our system is high throughput, does not require animals to be artificially dehydrated, and is simple both in design and implementation. Initial characterisation of homeostatic water consumption shows high reproducibility between biological replicates in a variety of experimental conditions. Water consumption was dependent on ambient temperature and humidity and was equal between sexes when corrected for mass. By combining this system with the Drosophila genetics tools, we could confirm a role for ppk28 and DopR1 in promoting water consumption, and through functional investigation of RNAseq data from dehydrated animals, we found DopR1 expression in the mushroom body was sufficient to drive consumption and enhance water taste sensitivity. Together, we provide a simple high throughput water consumption assay that can be used to dissect the cellular and molecular machinery regulating water homeostasis in Drosophila.

SUBMITTER: Lau MT

PROVIDER: S-EPMC5711950 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature

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A simple high throughput assay to evaluate water consumption in the fruit fly.

Lau Man-Tat MT Lin Yong Qi YQ Kisling Stefan S Cotterell James J Wilson Yana A YA Wang Qiao-Ping QP Khuong Thang M TM Bakhshi Noman N Cole Tiffany A TA Oyston Lisa J LJ Cole Adam R AR Neely G Gregory GG

Scientific reports 20171201 1

Water intake is essential for survival and thus under strong regulation. Here, we describe a simple high throughput system to monitor water intake over time in Drosophila. The design of the assay involves dehydrating fly food and then adding water back separately so flies either eat or drink. Water consumption is then evaluated by weighing the water vessel and comparing this back to an evaporation control. Our system is high throughput, does not require animals to be artificially dehydrated, and ...[more]

PMID: 29196744

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A simple high throughput assay to evaluate water consumption in the fruit fly.

Publications

A simple high throughput assay to evaluate water consumption in the fruit fly.

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