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Carlos Ribeiro followed Drosophila foraging habits for several weeks and found that fruit flies choose between different food sources according to their nutritional requirements, gender and mating status.

Carlos describes their findings, 'Normally when kept on "complete with sugar and yeast) and given the choice, flies do not eat food with (yeast-enriched). However, after a few days on a proteinflies preferred a yeast-rich diet. Female flies switch diets more quickly than males, and mated females quicker than virgin females.

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