Drosophila Metabolic Rate
Drosophila Metabolic Rate - Related Videos
04:31
Measurement of Metabolic Rate in Drosophila using Respirometry
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Cited by 49 •
2014
Metabolic disorders are among one of the most common diseases in humans. The genetically tractable model organism D. melanogaster can be used to identify novel genes that regulate metabolism. This paper describes a relatively simple method which allows studying the metabolic rate in flies by measuring their CO2 production.
01:25
Metabolic Rate
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2024
The human body is a powerhouse of energy, with every cell performing numerous functions that require energy. This energy production and consumption is measured by the metabolic rate, which quantifies the total heat generated by all the body's chemical reactions and mechanical work. This measurement helps to determine the rate of kilocalorie (kcal) consumption needed to fuel all ongoing activities. The Basal Metabolic Rate (BMR) measures the energy expended at rest. Several factors influence the...
10:49
Measuring Rates of Herbicide Metabolism in Dicot Weeds with an Excised Leaf Assay
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Cited by 14 •
2015
This manuscript describes how herbicide metabolism rates can be effectively quantified with excised leaves from a dicot weed, thereby reducing variability and removing any possible confounding effects of herbicide uptake or translocation typically observed in whole-plant assays.
08:22
Preparation of Mitochondrial Enriched Fractions for Metabolic Analysis in Drosophila
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Cited by 13 •
2015
Mitochondria play central roles in the regulation of metabolism and homeostasis. Subtle changes in mitochondrial metabolism that affect organismal physiology could be difficult to detect in whole organism metabolomics studies. Here we describe an isolation method that enhances the detection of subtle metabolic shifts in Drosophila melanogaster.
04:11
Assessing Glucose Uptake in the Motor Neurons of Drosophila Larvae with Upregulated Glucose Metabolism
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2025
The video demonstrates a technique for measuring glucose uptake in Drosophila larval motor neurons using a fluorescence resonance energy transfer (FRET)-based intracellular glucose sensor. After dissecting the larvae to expose the ventral nerve cord, the motor neurons are visualized through the fluorescence emitted by the sensor's donor fluorophore. When stimulated with glucose, FRET between the sensor's donor and acceptor fluorophores triggers the emission of fluorescence from the acceptor,...
FAQs
Oxygen consumption and carbon dioxide production serve as measurable proxies for energy turnover in the fly. A change in either signal can indicate altered cellular respiration and therefore a shift in whole-animal energy expenditure. Interpreting the measurement requires linking the respiratory signal to the biological condition being tested, rather than treating it as an isolated molecular readout.
Temperature can affect metabolic rate directly, while activity changes energy use independently of baseline physiology. Sex, age, and nutritional state also alter the respiratory measurement. Holding these factors constant, or deliberately comparing them, helps researchers distinguish an experimental effect from variation caused by the flies’ physiological condition.
At the cellular level, metabolic-rate measurements help connect whole-fly energy expenditure with mitochondrial respiration. They therefore provide a physiological bridge between changes in genes, hormones, or diet and the performance of the organism. This connection is useful when a study asks whether a molecular or environmental change has consequences that extend beyond individual cellular pathways.
An experiment begins by placing flies under controlled measurement conditions, then recording oxygen consumption or carbon dioxide production while the animals’ relevant state is documented. Researchers can compare respiratory values across experimental groups after accounting for temperature, activity, sex, age, and nutritional state. This workflow turns physiological variation into a quantitative outcome for biological analysis.
Researchers should document temperature, activity, sex, age, and nutritional state because each can influence energy expenditure or the respiratory signal. Recording these variables allows investigators to separate differences associated with the experimental treatment from differences caused by the flies’ condition. Such comparisons improve interpretation when metabolic rate is used to evaluate physiological performance.
Drosophila metabolic rate is useful in studies of aging, obesity-related pathways, development, and metabolic disease biology. Researchers can use respiratory measurements to ask whether a genetic, hormonal, dietary, or environmental manipulation changes energy use across the organism. The resulting phenotype helps place molecular pathways in a broader physiological context, especially when paired with the fly’s well-characterized genetics.