Fat BodyPotassium RadioisotopesElectric ImpedanceBody CompositionBody WaterCarotid BodyBody Fluid CompartmentsNutrition DisordersGrasshoppersLarvaNutritional StatusCachexiaHemolymphHemocytesInsect ProteinsAnthropometryExtracellular SpacePotassiumAdipose TissueEnergy MetabolismDrosophila ProteinsDrosophila melanogasterBody WeightBody Mass IndexModels, Biological