Quantifying Drosophila food intake: comparative analysis of current methodology.

Quantifying Drosophila food intake: comparative analysis of current methodology.
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DOI:
10.1038/nmeth.2899
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发表时间:
2014-05
期刊:
影响因子:
48
通讯作者:
Ja, William W.
Ja, William W.
中科院分区:
生物学1区
文献类型:
--
作者:
Deshpande, Sonali A.;Carvalho, Gil B.;Amador, Ariadna;Phillips, Angela M.;Hoxha, Sany;Lizotte, Keith J.;Ja, William W.

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食物摄入量是动物研究中的一个基本参数。尽管果蝇在实验室研究中被广泛使用,但在这种模式生物中,准确测量食物摄入量仍然具有挑战性。在这里,我们比较了几种常见的果蝇摄食试验:毛细管饲养器(CAFE),放射性示踪剂或比色染料标记食物,以及观察鼻子延伸(PE)。我们发现,CAFE和放射性同位素标记提供了最一致的结果,具有最高的灵敏度,并且可以解决染料标记和PE无法区分的饲料差异。我们的结论是,同时进行放射性标记和CAFE检测是目前量化果蝇食物摄入量的最好方法。了解食物摄取方法的优点和局限性将极大地促进果蝇对营养、行为和疾病的研究。
Food intake is a fundamental parameter in animal studies. Despite the prevalent use of Drosophila in laboratory research, precise measurements of food intake remain challenging in this model organism. Here, we compare several common Drosophila feeding assays: the Capillary Feeder (CAFE), food-labeling with a radioactive tracer or a colorimetric dye, and observations of proboscis extension (PE). We show that the CAFE and radioisotope-labeling provide the most consistent results, have the highest sensitivity, and can resolve differences in feeding that dye-labeling and PE fail to distinguish. We conclude that performing the radiolabeling and CAFE assays in parallel is currently the best approach for quantifying Drosophila food intake. Understanding the strengths and limitations of food intake methodology will greatly advance Drosophila studies of nutrition, behavior, and disease.
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